Thanks for the prompt Feedback and support! I did build a cable as described and it worked. The sub sounds awesome. my former Sub sounded just bloated and made listening to music annoying. The Reference 100 Mk2 sounds exactly as I had hoped. Fast and dry, makes listening to Rock and Metal especially enjoyable.
I also contacted the dealer again and he actually admitted that the cable should be in the packaging and promised to send me one. So I will get my original MJ Sub cable to maybe even enhance the Sound.
Thanks for your great product and support,
Many thanks , especially to Keith, for all his invaluable help setting up my REF 100 sub together with my new Denon AVR amp.
Both are now working in perfect harmony, and these subwoofers are indeed the best product out there.
I am a novice audiophile but with the extremely patient help from Keith at MJ Acoustics I am learning quickly.
First class products and first class customer service.
Thanks Steve Cruse.
I have bought a Reference 800 and I am very happy, its so complete !!!!! Its very Good!
I had a Velodyne DD18 before and this is Better
Just wanted to let you know that my sound is beter than ever.
More air and deeper lows. Although my Monitor Audio speakers are able to let me hear the 20Hz frequenties, the bass is more smooth now and it looks/feels likes my speakers are breathing.
Listening to Lee Ritenour's Rythm Session right now and it's just amazing how i rediscover this album.
I'm very happy with the results, big thanks!
I could not find a forum on your site where I could leave a message of appreciation for your help.
I drove up to Wisbech from the South coast yesterday with my Reference 1 subwoofer which after some 7 years of constant use had developed a crackle. Instead of repairing it and sending it back by courier you decided to fix it there and then while I waited just because I had driven so far.
The repair you made was perfect as was evident when it was re-installed following my return home last night. The difference it makes to my system is huge and I was delighted to have it back.
My grateful thanks to Keith and also to John who made the repair so quickly and efficiently. (I was on my way home within 30 minutes of arrival).
Excellent service which was very much appreciated - thank you and very well done.
Hello MJA Tech
A big thank you for
Helping me better understand my Reference 200 sub & getting my equipment to work together
A very quick support reply
Your very in depth email & attached manuals / information
I was not expecting a reply of this quality
My 2 channel listening has now been transformed into something wonderful
Brilliant support for an equally fantastic product
Can't thank you enough
Burton upon Trent
Reference I Mk3
Many thanks for your call last evening, it was much appreciated, although apologies are due, as I felt I was rather brief at the time owing to being 'tied up' at the time and not quite in the best position to chat. Being underneath a car attempting to repair brakes is not the best place to be when the phone rings, sorry.
In response to your call, I can only say thank you. Your 'turn around' time was very quick, which is always a bonus when something in daily use is away for repair, and as a result of reconnecting and fitting the unit back into the cabinet everything was back to normal, as expected.
It's always a little difficult to know if something is performing 'better' than before, due to the replacement of new or superior parts (and possibly more so in the case of a sub, which is there to enhance the overall performance of a system), but without a doubt the Ref1 does its job in my system extremely well.
I purchased the Ref1 after quite a number of demonstrations of other subs, but it was the MJ that integrated into the system (both on demo and in my own!) more so than any other. I experienced a number of systems that could sound very good, but the sub invariably stood out as an independent contributor to the sound. The MJ didn't do this at all and on every occasion integrated into the system and 'disappeared'. Numerous individuals listen to my (relatively small) JBL Control 1 Pro's and cannot believe that they produce the quality of sound and the levels of bass that appears to be emanating from them!!! (albeit that the five JBLs are being driven with around 600W). The MJ is hidden behind a nearby arm chair, but the whole performance is completely integrated and the sound always appear to come from the soundstage as one would expect. And this doesn't matter whether it's pure music being played or (in most cases) it's the soundtrack to a good DVD.
Many thanks again for your assistance with this one,
XENO 5.1 System
Received my system today everything in order.
I wish I had been put onto this when it first came out.
I am over the moon.
I would describe the speakers as mellow which is what I like, neither too deep bass wise,
or too bright I can't stand voice sibilance.
So to sum up, I'm well please and chuffed with your service.
Take care . J. Thomas.
XENO 5.1 System
This is the first time that I have written to a manufacturer congratulating them on a product.
I have owned them all, Mission. Kef. Morduant Short, Tannoy, Acoustic Energy and a host of others.
I'd like to meet the person who designed the XM1 speakers, neither too much bass or treble no sibilance, I would describe them as mellow and very accurate, just what my ears have been waiting for. They are like putting on an old pair of slippers. I don't get tired of listening to them and I bet they improve further, when they have been run in.
The sub and centre speaker oozes confidence.
What I like is that they can stand on their own in straight stereo without having to have the sub kicking in. The finish and overall good looks, coupled with a compact size are a feat in design.
I live in a small house and have put my system together working from the back. I can't use the XM1 as the rears cos they are a tad too big, so I have opted for Tangent Evo 4 for rear left and right, and for rear back left and right. the speaker finish compliments the XLM1's
Well that's about it, I would like to thank Tangent cos I started with these first, and looked to find a manufacturer that would compliment their finish, I took a chance on you and have been rewarded.
PRO 50 Mk2
firstly i would like to thank you for such a stunning product. i bought your pro 50 mk2 sub woofer the day i heard it at the bristol what hifi show and was very pleased with it i have it connected to my arcam avr250 cinema amp via the speakon connection and the phono one for films and i was so impressed by the lift in performance of cd's, i always thought my old sub was good enough for bass (wharfdale sw150) but oh how wrong i was. i know its taken a long time to thank you but i have been busy listening to all my cd's again and finding so much more in them that i just never knew was there.
so thank you very much and also thank you to your enquires department who helped my with my bridge tied load quiry.
many thanks mark dix seriel pro50 mk2 eb2 2919
Hello all at MJ Acoustics !
First of all, thanks for sending me a PDF
of the user manual for my Reference 100 MKII. I don’t
know what I did with the original.
I purchased this high quality piece of audiophile
equipment in March of this year (2006). I bought it on-line
from Superfi. I can’t honestly remember exactly what
I paid for it, but I can assure you that whatever it was
it was well worth the money !
I have it paired up with a pair of B&W
601 Series 2’s which I’ve had for around 6 years.
I’m more of a traditionalist in hi-fi technology;
I still haven’t got into the AV surround sound game
yet. Maybe one day I will but for now I stay with my two
The sound quality from my system pre sub-woofer was great
in the sense of clarity and volume, which is to be expected
from B&W’s. However, it was lacking that bottom
end tone and power, especially at low and medium volume.
I initially bought a less expensive sub
from my local Richer Sounds, (not meant as a disparaging
remark towards them) around the £150 mark, can’t
remember the make or model, but I took it back within a
day, as it just didn’t blend in with my system. It
had very little control on it and it just seemed to “boom”
no matter what type of music it was processing. It seemed
to turn the sound quality of my system from a reasonable
quality separates collection, into a run-of-the-mill all
in one system that could be purchased from any high street
Naturally when I decided to fork out a bit
more readies on a quality sub, I was a bit nervous, thinking
I could have wasted more money.
I NEEDN’T HAVE WORRIED !
This sub is quite simply outstanding
I’m a rock and blues man myself, my
wife likes these to a point, but Soul and Hip Hop are her
favourites. This sub handles the lot. Whether it is fast
aggressive heavy rock, more melodic blues, or the pounding
but slower bass of hip hop.
This sub enhances my B&W’s; it
lets them concentrate on the mid and high frequencies. My
system is complete !
What is very important to me about this
sub is that it sounds just as good at low volume levels
as it does at higher levels, which is very important to
me, as although I do like to play my music loud when I can,
there are times of the night when this is just not practicable
due to sleeping children, neighbours etc.
Thanks to John’s help with programming
from the remote, I’ve now got her tuned in perfectly.
I have the gain set at 50 for blues, 47 for rock, 45 for
Hip Hop and take her right down to 40 for action films.
If you are a rock fan and you want to audition
this sub, my I suggest you listen to Golden Earing’s
Radar Love. First listen via a quality pair of speakers,
and listen again with the sub!!!!! Oh
the bass guitar sound !
Try watching the X Men Last Stand
with this sub wired into your system – WOW !
THIS SUB ROCKS !!!
Thanks very much for making such a quality
sub that improves my system.
An expat Scot living
I am back from India after setting up my AV system. We enjoyed
listening to the system with friends and family members.
Using both the LFE and high level input have helped the
sound stage and depth of music. MJ REF100Mk2 lived up to
my expectation and sounded really good for movies and even
better for music.
Thanks for your help.
Thank you for your prompt response to my query regarding
my subwoofer. have tried your recommendations and I am now
over the moon. I did not realise what a difference a good
subwoofer would make to my movie collection. And my music
CDs have come to life Pink Floyd have never sounded so good.
Once again thank you for your help and also making such
a good product.
Cheers mick fail...
I would like to offer you feedback.
I am listening to the REF 100MK2 while writing
to you and I cannot stop smiling as the performance of this
subwoofer is truly outstanding, I feel it adds a new dimension
to whatever type of music I am listening to. This subwoofer
rocks when Queens of the Stone Age rock, it pounds when
King Tubby comes to town, Nas now delivers his rhymes over
either a loose and fluid funk groove or a tight, aggressive
soundscape and when Harry Mudie's frequencies appear, their
subtly and detail are highlighted with clarity and beauty.
I have used this subwoofer in a number of
hi-fi combinations, personally I prefer valve amplifiers
but the REF 100MK2 performs extremely well with any set
up that I have tried. I am currently using the Leak Stereo
20 with a Conrad Johnson pre amp and my word the results
are pretty damn good. I have also paired this with a Cyrus
8 vs and originally with a Rega Brio and it still performs
It is extremely difficult in trying to communicate
to people why they should buy a subwoofer for their system
(and oh how they should) it is not until you hear your system
with a subwoofer you truly realise what you are missing
. What all us audio people are striving for is the best
sound we can achieve and if you have not bought a subwoofer
then you are missing a great big huge piece of the puzzle.
I must mention one aspect that I think elevates
MJ Acoustics above other manufactures, I have never experienced
customer service like this before, any problems or queries
that I have had have been dealt with quickly and efficiently,
they have been courteous and knowledgeable in all communications
that I have had with them concerning various aspects of
the two subwoofers that I have purchased.
If you are thinking about buying a MJ Acoustics
subwoofer, I would strongly recommend one, it will change
your life .
Reference 200 sub, with a hum using Denon
AV Amp !!!
I have recently purchased a Reference 200
sub which I intend to use for home cinema only. The sub
was bought on the strengths of all the reviews I found on
the net and magazines, the sub arrived and was eagerly unpacked
and connected up. I used the LFE phono connections from
my amp to this new sub and used the phono lead as supplied
with the sub, as the lead supplied was a 5 meter one, it
was great for positioning the sub in my room.
The sub was fantastic, bringing great punch,
slam and depth to my favorite dvd's, the sub is fast and
can go scarily low, more than enough to make light fittings
and door handles rattle !!
The first time I switched off my av amp
there was a very annoying low hum in the room, so I changed
the phono lead as supplied to a (shorter) QED sub lead that
was made up for me by Seven Oaks for my previous sub. This
helped a fair bit but I still had a quieter hum! This hum
by the way could be silenced when you touched the phono
plug of the sub lead! So I bought an award winning QED PS-W
screened sub lead, which still didn't solve the problem!
I contacted MJA for their advice, they were
fantastically helpful and E-mailed me that day with some
I have a Denon 3801 -7.1amp, Definitive Technology Pro cinema
80 speakers and a Denon 2910 universal player.
MJA advised me that with a long run of cable
I should first steer it away from any electric cables, trailing
sockets etc, as this could cause humming, so I did this
first, which helped, but only a little. The next thing from
MJA was that my Denon 3801 amp had no earth connected on
the 3 pin plug, so they suggested I try to create an earth
for my amp by using a spare phono lead from any spare socket
on the back of the amp, and actually connecting the earth
core of the phono cable only to the earth terminal inside
a mains wall socket, If I was competent of course or use
an electrician. This all sounded a little strange but I
used the QED sub lead that Seven Oaks had made for me, cut
off the Q-nex plug, removed the outer jacket to reveal,
one red lead, one white and a bare earth. I have connected
the bare copper earth to the earth side of the mains socket
face plate (green and yellow), re connected everything and
hey presto MJA have come up trumps once more!!!! No more
hum.... One peaceful lounge.
This sub is a beast, I don't know how this
amount of sound pressure can come from such a small enclosure,
which by the way measures 12" or so in width, height
and depth, but can also be musical and calm when not required
for effects and gives great warmth to your midrange.
I could go on all day about this sub but have only two things
left to say............ Thanks to MJA for your help and
advice and secondly if you haven't already bought a Reference
200......get one bought! You will NOT be disappointed.
REF I Mk3
Some weeks ago I contacted you about a suitable sub unit
to partner with my digital practice organ. You very kindly
recommended the REF 1 Mk 3 and organized a dealer for me
to deal direct with, in rather unusual circumstances compared
with the usual Hi Fi purchaser. Although the REF I MK3 was
over my budget, I am absolutely thrilled with the results!
The organ has been totally transformed by now having the
full bass response needed (down to 16Hz) and also by the
performance of the sub at higher frequencies which has made
the pedal section of the organ seem so much more effortless
in the room. In particular, it is possible to achieve weight
in the bass without loudness or boom.
Many thanks for your help and support, and all the best
for the future of MJ.
"Professional Musician" Name not shown
for personal reasons.
REF 100 MkII
Re: - MJ Reference 100 Mk 11 that I recently purchased from
I approached the purchase with some trepidation as the equipment
I use is of British Vintage Stock,
The main components being a Billy Beard BB100 18 valve amplifier
/ Rogers Ls3/5a BBC Monitors.
The Rogers Ls3/5a’s are justifiable famous for their
soundstage and the ability to reproduce voice/music but
are little “Bass Light”`
So after a little research and also MJ being a UK company,
I settled for the MJ Ref 100 Mk11.
After a very straight forward connection to the equipment
and everything left at the factory settings and allowed
to warm up, on went the music!!
I was not prepared for what a difference the Ref 100 made,
the enhancement to the lower frequencies is simply astonishing,
the MK11 compliments the
Ls3/5a’s so well it is hard to describe, let’s
just say “brilliant” the best add on I have
ever purchased for my system.
Congratulations to all at MJ for a well thought out product.
Our reply to this unexpected compliment:
Just thought I would drop you a reply email
I walked in the office this morning to be
greeted with “Mail from an end user which needs your
attention”. That normally means a tech problem so
I sat down and read the content of your mail.
Every so often we receive a testimonial
which stands apart from the rest in the way it is put together
and delivered. Yours certainly does that and I can tell
you that there are a good number of smiling faces here today.
Thank you very much for your kind words. Great boost in
A great deal of thought and hard R&D
work has gone into the development of the Reference range
as a whole and so your comments are very well received indeed.
With your agreement we would like to be
able to post this along with many others, when we get round
to it, on our web site for other prospective customers to
read. Testimonials from end users who have put their money
where their mouth is, is much more important to MJ Acoustics
than any review from a magazine.
Once again thank you. I do hope you will
be agreeable to our request.
Mr D Rowden replied:
Please use the testimonial in any way you deem necessary,
It was easy to write as the 100 Mk11 performs in such an
exemplary manner. It is British sound engineering at its
If you ever get a chance to try your MJ equipment alongside
the famous Jim Rogers BBC Ls3/5a's and a decent British
valve amp I am sure you will be pleased with the result
as I am. You only have to see the price Ls3's are bringing
to see how they are sought after. The purists may not agree
with me but I let my ears do the listening and the Brits
do make the best sounding HiFi in the world.
Once again congratulations on an excellent unit.
REF 100 Mk2
AV Yamaha RX-V1600
Speakers Monitor Audio Radius 225 and KEF QS 165
Although being a little behind the times with the surround
sound scene I have always enjoyed quality sound systems
at home and have been using NAD equipment and Mordaunt-short
speakers for my last set up.
The new equipment above is proving to be exceptional both
in the film and music mode. I spent a long time to select
the sub-woofer and although I was a little sceptical when
Sevenoaks recommended 'yourselves' as this was not an audio
name I was familiar with.
However on completing some research, What HI-FI etc , I
found MJ Acoustics to come 'highly recommended' from a variety
of sources and began listening to this sub-Woofer in various
of sound rooms and was impressed by the quality of sound.
Having now purchased the reference 100 Mk11 and wired it
for both High and low level outputs and used it in my lounge
which is L-shaped 6mts by 4mts and I am astonished by both
the power and clarity of sound that it gives to my CD and
This Sub-Woofer in my system works incredibly well and I
cannot tell you the extra dimension this gives to my listening
pleasure. If there is one part of my system that I am most
impressed with and is cost effective it is the 100Mk11.It
is a quality Sub that is solid, well engineered and I would
recommend this product to be put on anyone's shortlist.
I now am looking forward to listening to both hi-fi and
films for many years to come.
REF 100 MkII
I have the sub connected to Denon AVR3803
Thanks for your reply, you were correct I had the remote
setting set incorrectly.
The remote now works fine and the device comes out of standby
with less effort than before.
As suggested it may well be an ideal to make some amendments
to the manual to clarify this area.
I am very pleased with the sub, it has blended in well with
my current setup.
Brian Houghton. UK
REF 100 MkII
Dear MJ Acoustics,
I have recently purchased a MJ Acoustics
Reference 100 Mk II subwoofer. Could I firstly say that
the build quality and features (including the digital display
and remote control) are excellent.
While the instructions are clear and easy
to follow, this is my first subwoofer I am unsure about
the settings I need to be aiming for when setting it up.
Would it be possible for you to give me
a rough idea of the “Hi” and “Ro”
settings that I should be aiming for based on my current
system; Rega Alya loudspeakers and Rega Cursa 3 /Maia 3
Pre & Power Amps and Rega Jupiter CD Player.
REF 100 MkII
Many thanks indeed for your comprehensive advice.
I followed your suggestions and I am pleased to say that
there is a big improvement in bass delivery but without
being ‘overblown’. I have moved the sub away
slightly from the corner; disconnected the High Level lead;
changed the AV setting to ‘large’ speakers rather
than previously set ‘small’; left the ‘RO’
at 80hz and set the ‘LO’ to around 50. I also
changed the phase to zero which I felt had a slight effect
(may be my imagination!). Probably the biggest improvement
came from changing the speaker size – this really
has had the effect of integrating the sound. Before the
Mordaunt Shorts sounded ‘thin’ against a boomy
sub. Pink Floyd’s the Dark Side of the Moon sounded
stunning last evening!
REF 100 MkII
Thanks for getting back to me. I eventually
done the sensible thing and went to a dealer to take a look
at the sub. I bought one and I'm very pleased with it. I
decided to go the MJ ref 100 mkII rather than the REL quake
due to the larger driver and the handy remote feature.
What lead to this mail from Paul
Wilson follows below:
Subject: Query regarding: Reference 100 MKII
I'm currently looking at buying a small
sub for my home cinema set-up. The MJ Acoustics Reference
100 MKII is on my short list, however i have some queries
as I can't find a review of it anywhere.
The MKI got some good reviews and looking
at the pictures of the MKI,
there was plenty of switches to specify SLAM or DEPTH and
also set the high and low levels. I have some queries about
the MKII, if you
wouldn't mind emailing me back with the answers.
Does the MKII have controls for SLAM / DEPTH
switch, high and low levels? Just from the picture, there
looks to be just one knob.
Regarding the remote control and the four
presets, are the presets user configurable? E.g. can I set
up preset 1 to have x amount of high level and y amount
of low level etc.
How long is the cable on the remote control
MJA Sales wrote:
So sorry for the delay in responding to
you. Email problems here resulting in the delay.
The REF 100mk2 has significantly more features
than the mk1 and also come with more slam and depth as standard.
The driver has been increased from 8" to 10".
The control panel may look simple with one knob but it is
fully computer controlled using the latest DAMP 2nd generation
configurable feature set. Pressing the button in scrolls
through the extensive menus and turning the button changes
the settings. Quite simple but very user friendly.
There is infinite adjustments for Phase,
Xover and gains and all these can be saved in any of 4 preset
storage areas. The settings can all be as different as you
like. Even the display brightness and the many other settings
can be stored.
The area of slam and depth switches which
are offered on some competitors products does little to
assist in the proper integration of the correctly designed
and manufactures subwoofer. Basically these
switches select an artificial boost at a given frequency
to enhance the impression of depth.
All MJ Acoustics subs have maximum depth
and slam built in, and at the same time, deliver a flat
response down to the given specifications.
The Remote eye is 2m long.
Hope this helps
REF 150 Mk2
Thank you for your quick response on my question. Last night
I spend working on your answer and I must say: It worked
great! Now I’m experiencing deep bass but I’m
now completely happy. I’m working with Monitor Audio
RS 1 monitor speakers which can go as low as 43Hz, but my
feeling is that this frequency is not optimal used on the
RS1. I’m trying to get to best of this combination,
so I have to try and try. If you have any tips how it can
be done, feel free to notice me.
And of course MJ Acoustics can put my question on the FAQ.
May you can even tell that the 0 is the most and 9 is the
least setting for the sensitivity of auto power on feature.
So great sub and great support. So my choice for MJ Acoustics
over a REL subwoofer is a good one !
I just wanted to express my delight at finally
getting a Reference 200 home and linking it to my system.
I am using it with Tannoy Arena speakers (it is a smallish
room and domestic acceptability was a major consideration!)
but it was always the intention to use the Ref 200 rather
than the packaged Tannoy sub unit due to the Ref 200's better
controllability (and better clout!).
My listening is about 75%music and 25% cinema and purists
would probably scoff at the thought of such small satellites
with a sub but it is a tribute to the capabilities of the
Reference 200 that it integrates superbly with the Tannoys
for both uses. ( My previous speakers were Kef reference
104/2's so it had a lot to live up to!)
Finish and build quality is superb and I look foward to
many years of service from the unit.
I am using the LO input connectors at present so look foward
to adding the HI input link to enhance the sound even further.
Anyway, thanks from me for a great (British) unit that does
the business with both music and movies and from my wife
for the domestic acceptability. Now, about knocking the
dining room wall down and getting the Ref 1..................................
At first congratulations for your products,
I think they're of superb (sound and construction) quality!
I have an MJ Reference 200 subwoofer and I'm in the process
or running/breaking it in (not sure what the correct word
I would like to thank MJ Acoustics for an
excellent piece of equipment, the Reference 200 subwoofer.
Now I’ve set it up I can appreciate the amount of
work that has gone into making this product, like the 4
presets that can be controlled from the remote control,
and the fine adjustments that can made to set the sub up
just to your exact preferences. I was using the THX sound
disc to help set it up and the sub followed the sound sweep
rite down to 20HZ with no trouble at all. The bass is so
clean I’m hearing sounds on film sound tracks I haven’t
heard before. I would like also like to thank John from
MJ Acoustics for his help and time too.
Well-done MJ Acoustics.
Thanks for your reply, I now have the Sub & have been
playing with it over the weekend. I bought it from HiFiBitz
who offered a great selection to choose from but I bought
the Ref 200 on the strength of the reviews.
I have made the right choice, not only does it look good,
the light oak finish matches the lounge furniture, and
has stopped my Wife dead in her tracks moaning about 'a
black box stuck in the corner'.
The performance is awesome
even at reduced 'running in' levels. Set up was challenging
to get optimum results for various applications but it
was worth the time and effort to set it up properly, I
have used both the high level speakon connections and
single line LFE input, the two together seem to give the
best results and I will tweak the settings when the Sub
is well bedded in.
I wish your company every success, with products like
this on offer I am sure you will continue to thrive.
Dear MJ Acoustics,
Just bought the little Pro 50 and what
staggering little sub this is. My old faithfull REL strata
2 has been shoved in the corner for low level DVD grumble
but I still yearned for something to use at high level
when listening to music.
1 . It had to be small (the wife)
2. It had to be cracking (me)
Eventually it boiled down to two subs. Your Pro
50 and the REL Quake. I have to say that the
quake was superb but yours was even better. Controlled,
deep, musical and infinitely adjustable. Stunning. What
else can I say.
Alex, Oakham, Rutland. UK.
I phoned you regarding
the setup of the above sub together with my existing Tannoy
MX10 sub hooked up to the centre speaker high level and
the MJ Acoustics low level phono....can I just say thanks
as the results were amazing...my centre speaker came to
life, my whole system was much more detailed and the low
level basss from the MJ Acoustics Ref 100
was just amazing... Many thanks for your time and patience
on the phone in helping me with this and for making such
a great value sub for the money...
Derry City. Northern Ireland.
I am delighted with my
Reference 100. I listened to an REL Quake
too in the shop. The REL puts out at least as much bass
as the Ref 100, however the control is
nowhere near the level of the MJ. The light oak veneer
finish is extremely good, can’t think why anyone
would buy a black one. I found the sub very easy to set
up and integrate into the system. I am running it through
my own custom high-level cable crossed over at 42Hz. It
integrates so well that my housemate amazedly remarked
that it was as if the extra depth was coming from my main
speakers, just as it should be. I listen to a whole range
of music from classical to metal. One of my favourite
groups are the Jazz Pistols, a German ‘energy jazz’
trio. Their virtuoso, fret burning bass player uses six-string
basses to great effect which the Ref 100
keeps up with in style and a very firm grip. Very quick,
very controlled and a joy to listen to whatever you play.
Keep up the good work
and feel free to quote me on your website.
All the best
After a couple weeks of running the Reference
100 sub in, it sounds fantastic with whatever
I play - vinyl, CDs, DVDs, or the latest multichannel
audio discs. Set up was easy and support from MJ Acoustics
has been excellent. I am very pleased with this product
and it has integrated very nicely with all my other equipment
too. Now I don't know how I managed without one before.
A very worthwhile, value-for-money purchase.
Martin Kyprianides, Berks. UK
Having recently upgraded to a Reference 100,
I can honestly say I am very happy with my new purchase.
Of the subs I auditioned this model was noticeably better
than its rivals, giving a new dimension to both music
and movies. It actually outperforms higher priced models
from other manufacturers in my opinion, and perfectly
complements my Arcam DV89 and AVR300.
Rich Southgate, Southampton, UK.
I recently purchased your
Reference 100 Sub after having my Boston
Acoustics stolen whilst moving house. The 100 absolutely
destroys the Boston in terms of its frequency range and
quality of bass and has really completed my audio-visual
setup. I will absolutely recommend your speakers to friends.
Balham, London. UK
Thanks for your help.
I purchased the above this weekend and
it has changed my listening experience. I agree that if
it plays music slap a subwoofer to it.
I was worried by all the salesmen that REL would be the
best, but after serious listening the MJ sub is far superior.
I had previously owned a Paradigm sub which impressed
me initially but soon gave me listener fatigue over a
What is most important is that whilst it looks good it
also manages to disappear from an audio point of view.
Like Formula 1 to win overall you must be using a Ferrari,
with the MJ sub you also get Michael Schumacher driving
A wonderful piece of kit.... Well Done.
Adrian Bone -
Fleet. Hants. UK
I have recently purchased
a pre-owned Pro 50 for use in a reasonable
quality audio system.
I always thought that sub-woofers were either for mini
bookshelf speakers or Indiana Jones fans but having, almost
by accident, stumbled across several favourable press
reports of the MJ Acoustics range used in audio systems
I decided that what they were saying probably made sense.
When the Pro 50 came up for sale, the
price was reasonable so what the hell!
I cannot believe the difference this piece of kit has
made. Not only does my system go much deeper but the whole
mid-range has opened right out. I now get a greater sense
of 'being there' without resorting to the excessive volume
levels which used to cause the system to shout during
loud passages. And all from a domestically acceptable
I also found setting up the PRO 50 relatively
easy despite the fact that others have indicated that
the procedure requires the equivalent of a degree in the
black arts. When all the instruments in the orchestra
sound in the right place, with the right weight, you've
All in all a super product which has transformed my system.
Geoff Lord - Solihull. UK
Just to let you know that
after your guidance regarding the purchase of either the
Pro 50 or Reference 100,
I opted for the latter.
I must say that the benefit of adding this excellent sub
to my already great sounding system was quite astounding.
It created a real rich depth to the whole soundstage,
I could hear so much more from my main speakers.
All I can say is that everyone who likes quality sound
should purchase the Reference 100 today.
It is a fantastic unit at a fantastic price.
Keep up the good work, and best wishes to you all at M.J.
Ian Goldthorpe - Blackpool. UK
I recently bought the
MJ Acoustics Pro 100 and Pro
50 both in the Beech special finish. The units
look absolutely outstanding - compliments to the team
involved in the manufacture, excellent.
The Pro 50 on the centre channel makes
a huge difference all round enriching both dialogue and
overall delivery. What can I say about the Pro
100 - fantastic ! I'm using both the high and
low level inputs simultaneously (the high for the front
speakers) and I'm getting superb performance on both movies
and music - glad I can control the two gains independently.
Finally, thanks for your help with setup and during the
"learning period" after the units arrived. Everything
is all settled in now and running well.
Thanks again to yourselves and to your team for 2 fantastic
units - glad to see British engineering is alive and well
and living in Wisbech.
All the very best for the future
Steve Sinclair - UK
Pro 100 and Pro 50
It was a pleasure talking
to you regarding the recent purchase of the Reference
150 subwoofer. As suggested I thought that I
would express sincere satisfaction of ownership of this
product. In such a fiercely competetive market, it is
difficult to find a product that addresses the needs of
the discerning video/audiophile. I find the unit integrates
seemlessly with my Kef Q7 speaker system and enhances
both movie and mutlichannel audio performace way beyond
what I had expected. Installation and configuration was
idiot-proof and within minutes was pumping low-frequency-effects
with aplomb. I found in particular that the opening scene
of Lord of The Rings was delivered with seismic gusto
and the shock wave nearly swept me off the couch! The
Ref 150's presence seems to melt away
- it is never heard but felt.
So thank you once again for your advice and product, not
to mention helping me part with money well spent!!
Darren - East Yorkshire. UK
I have to say that this subwoofer is miles ahead of anything
I have auditioned. (I have the Reference 100)
I run it at 11.00 iclock on the dial and it has a strong
presence and with music, my main reason for getting a
sub, it is tight, quick and integrated seemlessly. I am
lucky enough to have the only one in Australia bought
in by the Distributors. I tried the Rel Q150e and even
though that is 150 watts, it didn't integrate well. It
would be my second choice though but thankfully I have
come across the MJ. I have high end Dynaudio Contour speakers
and this is magic. Congratulations to you all at MJ for
a thoughtfull and very fine product. If you need a testimonial,
you have it.
Andre Szarukan - Austrailia
Just a quick note to let you know how impressed i am with
the Reference 1 sub, I am using it with
the kef reference 2 speakers. The kefs as good as they
are i`ve always felt that they do lack bass extension.
I bought the reference 1 a week ago, it took about an
hour of tweaking at the controls to balance in the sub.
the kefs LF starts to roll off at 45 hz hence i slightly
overlapped the sub to start at 48hz, the high input gain
controll set at the 9.30 pos with the phase at the 12.00
pos. The bass extension and sound quality is mindblowing
!!. The midband is more open and natural sounding and
the deepest bass lines can be followed with ease without
ever sounding overpowering, its as if i`ve spent a few
thousand pounds on knew speakers, thats the difference
its made to my system. The beauty about it is that you
can`t hear the sub at work, it just looks like a piece
Congratulations on a superby designed and engineered product.
Best Wishes From a very happy customer.
P.S Been playing pinkfloyed wish you were here cd this
aft, could here and feel bass lines i never knew existed
on a couple of tracks, and thats listening at normal to
highish volume levels.
Thankyou once again.
All the Best.
Steven Kulmatycki - Huddersfield.
Just thought I would drop
you a note to say how happy I was with my new Reference
1 subwoofer. I am using it in a high-end set
up with Martin Logan Aerius i speakers, which are exrtemely
efficient, but do lack bass extension. With the
Reference 1 subwoofer, the sound-stage and depth
is now amazing. Not just in the bass; rather, across the
mid-range. My system has suddenly come to life. With music
such as Mahler it truly is dynamic.
EG Goodwin - UK
Hi Phill, connecting the
system as we discussed has caused me to be thrown out
of the street for scaring the neighbours! It is absolutely
phenominal what that little Pro 50 can
do. 5.1 Dolby for DVD and normal stereo for CD are fantastic,
clear, crisp and wonderful depth.
I am using B&W VM1 and LM1 for surround and normal
stereo. They have excellent mid-range and treble, but
lack bass depth. The Pro 50 has filled
the gap and then some and using the high and low level
inputs has added depth to the mid-range and move the roll-off
slightly further up the range.
A fantastic product, very
good price and excellent support.
- Guilford. UK
Please find enclosed
warranty details for my newly purchased Reference
I would like to add how happy I am with my purchase. It
is used with my Home Cinema with B&W CDM range speakers
and has integrated excellently. The accuracy to which
the unit can be set is both functional and producing excellent
Since purchasing the Reference
I, I have thoroughly enjoyed re-watching my DVD's,
finding deeper sounds that I was not aware of previously.
It produces excellent tight bass with both movie soundtracks
and explosions which not only sound realistic but feels
I auditioned various subs
from competition including Rel and Kef and the Reference
I outshone all these competitors. It came highly
recommended by the Hifi centre and I appreciate why.
I would not hesitate recommending
this sub to anyone and advise it should be at the top
of their listening list. The light oak finish is second
to none and fits in our room as another piece of quality
Keep up the excellent
James A Lockwood
- Huddersfield. UK
As promissed, I'm reporting
you my findings on this sub, but first let me thank you
personally for the great assistance you gave me during
the selection process of this sub-bass system. The attention
you gave to my repeated e-mails with questions and doubts
was one of the determining factors in my decision.
Next, I would like to
thank you and all the MJ Acoustics team for the excellent
job in making one the most beautifull subs on the market,
both in looks and in sound.
Everything you said about
this sub is true: this is a very musical sub capable of
reaching 15Hz. I used a 1 minute 15Hz pure sine wave track
burned on a CD to test this, and yes it played the 15Hz
This is a really marvellous
sub, with an easy and perfect integration with my KEF
Q65's. I followed your advice, and used both the high
and low level connections, connecting the front speakers
to the high level inputs, and the LFE output of the A/V
decoder to the low level input. This setup made it possible
to have a linear integration in stereo mode, and a more
agressive bass during film sequences, using the high level
volume at about 1/4 and the low level volume at about
The phase is adjusted
at a little more than 0 deg, instead of the 90 deg you
suggested. I adjusted this with the help of a friend,
running the sub and the main speakers at 40Hz (the crossover
point) using a test tone burned in a CD, and adjusting
the level so that both the sub and the main speakers had
the same level. Then, my friend turned the phase knob
from 0 to 180 degrees while I listened on my seat, trying
to determine when the bass was most powerfull (sub and
mains in phase).
I'm really satisfied with
this purchase, and reviewing my current setup, I think
I couldn't have made this kind of integration with a REL
Strata, because it doesn't accept both high and low level
inputs simultaneously. On the other hand the MJA Pro100
is every bit as musical as the REL Strata (I've heard
many RELs), so I think this was one of the best decisions/purchases
I've ever made.
Best regards, and many
Orlando A. Muñoz - Lisboa. Portugal
Hello, just a quick
note to say I have been using a MJ PRO 50
sub with a pair of B&W CDM 1 SE speakers for about
ten months and I am very pleased with the results.
Mr S.A. Legg -
Vale of Glamorgan. S. Wales
I would like to express how delighted
I have been with the inclusion of an MJA Pro50
in my Hifi setup. I explicitly mention Hifi because
this is where its impact has been most important to
My first comment would be that I never
considered my speakers to be deficient in the low frequency
department, according to original specification, they
are capable of delivering 33Hz @ -3db. Indeed the dealer
I purchased the Pro50 from described
my speakers as “his nemesis” because anyone
he sold a pair of Mission Argonauts to in the late 1980’s
could never be persuaded to part with them for something
else on the basis of an upgrade.
The first sub I tried with my system
was a B&W model borrowed from a friend, at his insistence,
for use in my recent entry into home cinema (utilizing
my Hifi with a processor). I have to say that the experience
somewhat dissuaded me from exploring the idea. I could
not get it to integrate, and was always aware of its
presence and location.
Then I saw the first review of the Pro50
in What Hifi magazine, which extolled its musical virtues.
This grabbed my attention and made me start to think
again. I found your website and read the reviews and
testimonials and this spurred me on.
The previously mentioned dealer, after
a shop demo, let me borrow a Pro50
for the weekend and I never truly expected what would
happen. I connected the Pro50 to my
power amplifiers via the hi-level speakon socket and
within minutes I got the Pro50 to aurally
disappear from my ‘ears sight’. I then sat
back and enjoyed a ‘fullness’ to the sound
I had never heard before. Sure there was probably more
bass (though not over the top) but what struck me most
was that the quality in the midrange seemed to be greatly
To make sure it wasn't a case of “I
wouldn’t have heard it if I hadn’t believed
it” I switched the Pro50 off
and listened again – still a good sound but not
as good as a few minutes before. All of this with a
‘loan’ model I had not yet purchased, nor
had any obligation to.
On the Monday I went back to my dealer,
with my cheque book only, and bought it.
The Pro50 to me is
one superb way to enhance the sound of a Hifi, there
may be other upgrade paths but frankly, for me they
would probably cost far more. Your product (the one
I have is the standard black) is beautifully made and
has a very reassuring feel to its controls, but above
all it just works very well!
Finally, I would also like to thank
you for the rapid and personal response to my recent
Ian Young -
Hi there, well last week I took delivery
of the Ref I right to my front door
infact and let me advise in no uncertain terms that
this is one hell of a piece of kit, its awesome beyond
all belief.... my experience of it is not just an auditory
one but a physical one as well, it interacts with your
clothes your physiology and your surrounding environment,
it involves and encapsulates the listener, I love it...
congratulations and thanks.
Rob Ansell - Leeds UK
I feel I must write to you and congratulate you on your
new Pro 50 subwoofer. Little did I
know that when I purchased this product, I was about
to be most pleasantly surprised and delighted. For many
years now I have been a hi-fi enthusiast and the Pro
50 has transformed the rest of my equipment.
About 15 years ago,
I purchased a Decca CD recording of Respighi's Pines
of Rome, and played it on a friends very expensive system
- the speakers alone were over £2,000!!!. On this
system, I heard for the first time a sustained organ
pedal note, and since then, I have never heard it again.
Imagine my delight, because of the Pro 50,
I am now wallowing in that organ pedal, and on my own
It is not just because
of this superb bass response, that I am so pleased about
the Pro 50, but also my other CD's
seem to have a warmer acoustics, producing a feel of
airiness around the instruments, which is far more agreeable.
This is no mean feat in a piece of equipment costing
less than £400.
Once again, many thanks
for making this customer, very happy indeed.
- Dorking, Surrey. UK
Dear Mr Jefferis,
Thank you for your letter of 14 December with the high
level lead. I have managed to fit this into my amplifier
and I am delighted with the results. I listen almost
solely to classical music through Quad 33-303 and AVI
NuNeutron monitor speakers on bookshelves.
I find the speakers adequate to good
with chamber music etc but I do miss too much on orchestral
/ choral music. I have been interested at times in the
possibility of a subwoofer but felt they were aimed
at the home cinema field rather than at someone with
The revelation is that whilst I now
have some "real" bass and a largely improved
orchestral / choral sound, I also have a much improved
sound with the chamber music and solo instrumental sound.
I can only describe it as giving a new sense of depth
and space. I am thrilled, and still have to fine tune
I would also like to say how impressed
I have been with the level of service you provided.
I particularly appreciated being able to talk on several
occasions either to yourself of your partner Mr Mason
- being a completely impractical person myself. It seemed
to me to be going well beyond all reasonable expectations
when you telephoned me at 9.30 the other night.
I wish you and your company every success.
Donald Adams - Leeds. UK
Thanks for your (and the courier's)
efforts - it arrived 8.20 am Christmas Eve.
It has performed well up to expectations
- even my wife admits I'm not totally nuts for wanting
to buy one. It fits well into my current system with a
pre-power amp driving very old Linn Kans being fed by
LP12, CD, video and cable TV.
It has added a new dimension to many tracks
and movies - we may even buy some organ music now!
I was a little concerned buying sight-unseen
(or rather sound-unheard) but it was definitely an improvement
on all the £200 subs I'd listened to - I hadn't
dared to listen to a £500 REL.
Best wishes for your company in 2002.
Leo White - Cheltenham. UK
I took delivery of a Pro 50 subwoofer
a week ago and would like to congratulate you on producing
a superb product. It has proved to be one of those rare
occasions when the reality has lived up to, or even
exceeded, not only the producer's claims but also those
of reviewers in the press.
I am a classical music enthusiast and
have some speakers which have for many years been very
good at producing a highly detailed and musical performance
across the range. But recently, being also an organ
music devotee, I wondered whether the bass went as deep
as the recordings.
There was a distinct cut-off which seemed
to be above the really shuddering kind of notes that
an organ produces at the bottom end. I bought the Pro
50 after seeing reviews in the Gramophone and
What HiFi but without a trial at home, which I thought
was a risk. I need not have worried. From the first
connection and test (Quad 66 pre- and 606 power amplification)
I realised that the bottom octave of music had never
been reproduced in my system.
Some experimentation with sound levels
and positioning brought me to a very happy state of
playing some music which, while being well-known to
me, was nonetheless completely fresh. This is true not
only of the organ discs but also of almost everything
I have put on. Astonishing as it may seem, even harpsichord
recordings have some bass fundamentals which I had never
heard. The full orchestra is a much more realistic representation
than before and the cellos and double basses, to say
nothing of the drums, are now taking the place they
would in the concert hall.
So I would just like to thank you for
an excellent product which I can foresee will add to
my musical pleasure for years to come.
James Bruxner CBE - Buntingford.
I use my Pro 50 for
listening to classical music and it has added a whole
new dimension to my listening pleasure.
Once I learned to keep the volume control down - listen
to the music rather than the sub - the effect was pure
magic, a fine complement to my (excellent) AVI Neutron
III speakers. It is not just a matter of louder bass:
the benefits can be very subtle indeed - with every
now and then a great thump (well controlled, when it's
needed) to remind me how glad I am the little black
box is there..
Eamonn Lawlor - Dublin. Ireland
This is a note to thank
you for your patience in answering all my queries when I
telephoned you recently.
I must take the opportunity to say how pleased I am with
your Pro 50. I think mentioned that I am
still using my old KEF 105's, mainly because I've not found
any newer models in the same range that offer a significant
improvement, however, the addition of the Pro 50
has had striking results, not only in extending the bass
but also in enhancing the overall response.
Keep up the good work and let me have news of any future
products. My regards to Mr Mason.
With my good wishes
Geoffrey Hamilton MBE - Hitcham.
Just a quick note to say thank you for
all the effort you have put into creating the Pro
50 subwoofer. The product has exceeded all
of my expectations.
Whilst I only have a very modest system the addition
of the Pro 50 has transformed both
stereo music and films. It has added both impact and
depth, the bass seeming to provide a platform for the
higher frequencies, leading to a more open and revealing
When combined with the excellent build quality, it makes
the Pro 50 worth every penny.
I wish you every luck in the future.
R.J Ashfiled - Menningtree.
Hi just a short note
to let you know I purchased a pro 50
sub on Monday, I have not looked back since. Thank you
for a fine product it has brought a new dimension to my