Subwoofer Questions
What Makes an MJ Acoustics Subwoofer so Special?
Are MJ subs suitable for both music & movies?

Can I buy MJ products outside of the UK?

Can I connect both the high & low level inputs simultaneously?
Can I leave my sub switched on?
Can I use more than one sub?
Do I need to buy a subwoofer?
How do I setup a multi-sub system?
How do I connect up my high level cable?
What cabinet finishes are available?
What does LFE mean?
What is the best position for my sub?
What is the “Phase” control for?
Which sub model is best for my room size?
Why is it so important to have a sub on the centre channel?
Will I benefit from having two smaller subs or one larger sub?
XENO Satellite Questions
Can I mount my Xeno satellites on the wall?

Do the Xeno satellites have any feet?
What’s the best placement for my satellites?
Do the Xeno satellites only come in 5’s, or can I buy them in 6’s or pairs?
Are the Xeno satellites suitable for 2 channel stereo?
Are the Xeno’s magnetically shielded?


Can’t find your question? Email your question to us at – technical@mjacoustics.co.uk

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Subwoofer Answers
What Makes An MJ Acoustics Subwoofer so Special?
It is not always that you can have your cake and eat it! Value for money comes without asking from MJ Acoustics, so too does reliability, quality, performance and features.
Our subwoofers are the best sound for pound investment you will ever make and represent the best addition anyone can make to their audio system. Outstanding in every respect. Highly efficient power output – true RMS wattage (not mythical), connectivity, hand crafted furniture grade cabinets with a meticulous build and finish choices limited only by your imagination. Making our subs not only truly excellent HiFi but also gorgeous furniture.  Above all tremendous value.  MJ Acoustics subwoofers complement the most discerning Theatre and Music systems!  for a more detailed explanation of why you should invest in an MJ Acoustics Subwoofer have a read of  The MJ Ethos.
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Do I need to buy a subwoofer?
YES. Remember, if it makes a sound, put a sub on it! The cheapest desktop, small PC speakers are vastly improved with the addition of one of our subwoofers. This is also relevant to very expensive speakers. Our award winning entry level Pro 50 sub has improved the soundstage of speakers ranging from £10 to £10,000+ now that’s some achievement I’m sure you’ll agree. MJ Audiophile quality subwoofers such as Reference and Master-Class series will seamlessly integrate and improve stereo, home theatre and studio applications. It’s a bit like experiencing air conditioning in a car for the first time. Once you have you simply cannot do without it again. Your sound stage will be fuller and true to the original recording whether it be music, movies or dedicated SACD, DVDA or DTS soundtracks. Take a look at MJ is Unique.
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Which sub model is best for my room size?
This is a difficult question to answer, as so many customers differ in their choice of models, room sizes and budget. It really depends on how loud you want to listen to your music/movies!! If you’re a “bass head”, then you need one of our more powerful subs, if you’re not, you don’t.  You will be very surprised at how well even our entry level Sub-Bass Systems augment large speakers in large rooms. It is absolutely about sound quality, not quantity when it comes to HiFi Audiophile requirements. Home Theatre, on the other hand, does benefit from impact and so more is definitely the deciding factor in this requirement. For a combination of uses then consider the Reference Series starting with the multi-award winning Reference 200.
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Can I use more than one sub?
Yes. Many customers have more than one sub for their setups using them in various configurations. The most common for Audiophiles are two subwoofers – one on the Left main speaker and one on the Right main speaker. This setup extends an already excellent system into true full range giving the extended lower octaves for pure stereo listening pleasure.  When it’s right it just sounds Real!
A common setup for Home Cinema enthusiasts is a sub on the centre channel and a sub handling the LFE channel. This is what we consider to be an excellent setup for enhanced dialogue (centre channel) and superb LFE handling. The amount of bass/sub-bass information that is sent to the centre channel is equal to, and in some cases, more than sent to the LFE channel. You may have heard people say to you “make sure you spend a fair share of your budget on your centre speaker”, it’s because it handles a good 70% – 80% on and off throughout the movie. As a large centre would normally be right in the way of your viewing area and most likely too large to fit on the shelf below your TV, your setup leans towards having a good quality smaller centre speaker (for example the XENO XC1) with a sub connected to it. You won’t believe the enhanced overall cinema experience until you add a centre channel sub… try it.
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Can I leave my sub switched on?
No, is our official line – would you leave your cooker on just to make sure it’s warm enough in case you want to cook something? It is safe practice to turn off all electrical goods if they are not to be in use for some length of time.
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Can I connect both the high & low-level inputs simultaneously?
Yes, you can connect both the high & low-level inputs simultaneously. One of the reasons an MJ Sub-Bass System is unique, setting MJ apart from the rest, is the ability to use your MJ subwoofer with multiple inputs at the same time. Take a read through the “MJ Design Ethos” and it will become so much clearer. This question is asked by many music lovers who have the High-Level cable connection for music and want the added benefit from their sub with movies through the low-level LFE connection. Similarly, the question is also asked by movie buffs who wish to use their sub to enhance their music.
With respect to movies, connecting both the High & Low-level inputs simultaneously benefits your setup when there is no LFE signal being sent to the sub from the source signal. Having the High-Level cable connected from the main or centre (recommended) speaker outs on the AV-amp or wired off the back of the speakers, adds a full range signal to the High-Level input of your sub. Cleverly blended together using the independent volume controls, both the high and low-level signals can give you the ultimate in depth reproduction throughout the entire movie, as well as exploding, thumping LFE (low-frequency effects) from one single subwoofer for the ultimate listening pleasure. Take a read through the setup procedure and it will all become clear. Setup my Sub-Bass System
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What is the “Phase” control for?
The “Phase” control is used to make sure your sub is responding in unison with your main speakers.  Phase is considered to be correct when the bass, at the listening position is loudest. Setup my Sub-Bass System
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What does LFE mean?
LFE stands for Low-Frequency Effects. It is the “.1” of a 5.1 setup. Low-Frequency Effects are usually crashing rumbles, thumps, explosions etc sent down the “.1” channel to your subwoofer for the bottom end growl of a movie. There are no Low-Frequency Effects present in a music track.  Please do not assume that LFE is the term used for all bass frequencies – it is not.  It is the term used for the bass detail encoded in the movie for effects in the lower octaves the film director wants to convey.  Very deep base is still present in many high-quality recordings of normal 2 channel stereo being output from the main speakers. This is quite significant because the provision of TWIN crossovers in an MJ subwoofer is so important because it is the ability to underpin this bass detail using the 2nd crossover and the 2nd set of inputs that make an MJ Acoustics Sub-Bass system so special. Take a read through the “MJ Design Ethos” which will cover more details about the uniqueness of MJ sub-bass systems and their features.
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What cabinet finishes are available?
The cabinet finishes available are as follows: Black Satin Paint over an Ash real wood veneer, the standard for all the Subwoofers we manufacture, referred to as Black Ash, Cherry Wood, Light/Natural English Oak and American Black Walnut are the standard production finishes throughout the ranges. We also offer extensive additional choices in paint finishes along with High Gloss deep lustre top coats for special requirements. If you want a special colour we can offer it to you. Visit our finishes page for further clarification on the available colour choices.
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What is the best position for my sub?
The positioning of the subwoofer can play an important part in the overall performance depending on the natural acoustics of your listening room. This is a difficult question to answer. Some insist that a subwoofer is placed in the corner of a room but this is not always the best choice. We will do our best to give some guidance.
Rooms that are naturally bass heavy would not benefit from placing a subwoofer in a tight corner or a small alcove which will add boominess due to many nearby reflective surfaces. A better position would be in a space that gives the sub a chance to produce its note without any colouring from reflective surroundings – somewhere near your main speakers would be best as this is the area where the majority or all of sound is produced.
Rooms that are naturally bass light could benefit from the sub being placed in a corner or an alcove. Slow moving sub bass waveforms can benefit from the reflection of two adjacent walls – this will increase the response time of the waveform and increase bass perception to the overall soundstage. Please note, although we say that placing a sub in a tight corner in a bass heavy room will add boominess, it may not be the case in a bass-light room. If you add more bass to a bass heavy room the results are usually boomy, but in a bass-light room, the results can be very different. You are the best judge as to where your sub should be placed as we can only offer guidance. We don’t live where you do! Most common placements for subs are, behind a TV, besides a TV, next to one of the main speakers, in between the main speakers, besides a sofa or behind a sofa. You may find yours performs better in a completely different place!  The most important point to remember is that a subwoofer is doing its job correctly when it is blended in with the rest of the soundstage and not standing out on its own. The art is to mix in the sub so you can’t easily tell where it’s positioned – you just know it’s there.  Setup my Sub-Bass System
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How do I setup a multi-sub system?
While slightly more complicated than the basic MJ setup for Home Cinema, use of three MJ subwoofers produces a number of benefits and is the most cost-effective method of achieving professional Dolby® 5.1 & DTS® standard bass performance. MJ Multi-Sub-Bass Reference configuration produces a true full-range performance from the primary zones of reproduction in theatre sound resulting in a far more natural and immersive experience than any single sub can produce.  These zones can be defined as follows: Front Left and Right Main Speakers with .1/LFE.  Centre Channel speaker and of course the Rear Left and Right effects channels that make up the standard Dolby® 5.1 & DTS® configuration. It can be argued that wherever there is a speaker the bass should be underpinned using a subwoofer. True, but the use of 3 MJ Sub-Bass Systems gets your setup to a point where the main zones are augmented for the best return on investment. This brings us on to the joy of “MJ Smart Remote. This fantastic remote control feature enables connection of all MJ Sub-Bass Systems to one remote control and for that single point of control to communicate bi-directionally with each subwoofer at the same time.  This aids in the setup like no other subwoofer can in the world.  using the built-in RTA (Real Time Analyser) audio frequency response changes are presented visually as well and aurally. Settings can be seen directly in front of you and the simultaneous adjustment changes made to all subwoofers in a group can deliver an instant aural change so as to reach the perfect integration with ease.  Once you have used this system of remote control you will wonder how you managed without it.
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Why is it so important to have a sub on the centre channel?
The centre channel receives a vast amount of bass information during your average movie. It’s placement, usually central to the viewer, makes it a very important part of the 5.1 setup that will deliver true full range dynamic capability. A common setup for Home Cinema enthusiasts is a sub on the centre channel and a sub handling the LFE channel. This is what we consider to be an excellent setup for enhanced dialogue (centre channel) and superb LFE handling. The centre channel information is equal to and in some cases, more information than is sent to the LFE channel. You may have heard people say to you “make sure you spend a fair share of your budget on your centre speaker” it’s because it handles a good 70% – 80% on and off throughout the movie. As a large centre would normally be right in the way of your viewing area, your setup leans towards having a good quality small centre (for example the XENO XC1) with a sub connected to it. You won’t believe the enhanced overall cinema experience until you add a centre channel sub….try it.
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Will I benefit from having two smaller subs or one larger sub?
The decision whether or not to have two smaller subs like the Reference 200 or a larger model like Reference IMk3 or Kensington, raises a few pro’s & con’s issues. Using only one larger sub, has one set of cables to setup, can handle more power than the smaller subs and only takes up one space in your room – but a larger space of course. It is not as flexible as two subs and can only be configured in one place.
Using two smaller subs, has two sets of cables to be setup, has less power handling than larger subs and needs two different placement positions in your room – but fits into a smaller area. Two subs can have their advantages regarding their placement within the stereo or 5.1 sound system – see the question – Can I use more than one sub? and question – How do I setup a multi-sub system? for more information related to setups of more than one sub.
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Are MJ subs good for both music & movies?
All MJ Acoustics products are designed first and foremost to be musical. This is by far the hardest to achieve. Anyone can make a “DIY Bodge-Job Boom Box” that might go thump! pop! bang! with your movies, but very few can design and manufacture a subwoofer with fast response time, musically accurate tone, precision controlled warmth with depth all packed into a beautifully finished cabinet at a size and price representing tremendous value… MJ has been doing this for almost 20 years.  Enough said! Take a look at “what makes a subwoofer from MJ Acoustics so special.” Or read our testimonials page and get a better feel for the people who own MJ Acoustics sub bass systems. The most important of all because they have put their money where their mouths are.
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Can I buy MJ products outside of the UK?
Yes is the simple answer. We do not have dealers/distributors in every country, but we are working on this area all the time.  Please email us directly and we will handle your sales enquiry efficiently.
Please see our International Dealers page for countries that distribute MJ Acoustics products. For customers not able to source satisfactory sales support we are more than happy to discuss matters directly with you. In the unlikely event we are not able to suggest a dealer near you then we will deal direct with you for your needs. Just drop us an email with your requirements.  You will find us very responsive and keen to help in any way we can.  MJ Staff are all Audio enthusiasts, so they speak your language.
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How do I connect up my high-level cable?

There are three types of connection you might make whilst using the high-level cable.
1.
To add bandwidth to your existing speakers in stereo mode,
2. Enhance the performance of your main satellites in a movie setup, or
3. To compliment a single speaker in a movie or stereo setup.

Warning
Before connecting up your MJ Acoustics Subwoofer please read this!

If you are going to connect both High Level & LFE inputs at the same time please make sure that your Stereo or AV amplifier does not have a ‘Digital Output Stage’ or is wired in ‘BTL’ (Bridge Tied Load) mode.

Both of these amplifier designs will need an optional interface module (Available from your dealer or direct from MJ Acoustics).

Please note that without this interface module damage may occur to the amplifier and/or Subwoofer and is not covered under warranty.

If you are unsure please contact your supplying dealer in the first instance.

1. Stereo Mode:
You connect the 3 bare end wires of the Neutrik Speakon cable alongside your existing speaker cables on the back of your amp as follows:
RED to left + (positive)
YELLOW to right + (positive)
BLACK to ONE of the – (negatives) NOT BOTH
.
This is the most common connection for stereo amplifier users who do not have a dedicated sub output and wish to extend the bandwidth and add a new depth dimension to their existing speakers.

2. Movie Setup:
This connection is made the same way as the above “stereo mode” but is usually in addition to the sub having the low-level input from the dedicated sub out on a 5.1 AV amplifier. Connections are as follows:
RED to left + (positive) – front speakers
YELLOW to right + (positive) – front speakers
BLACK to ONE of the – (negatives) – front speakers, NOT BOTH
.
The only question you may ask yourself is, do I add the high-level cable to my main front speakers? or do I wish to add the high-level connection to my very often smaller rear satellites to extend their bandwidth? As the rear channels in DTS or Dolby Digital are receiving full range signals, it can make a huge difference to your movie experience when you add a sub to your rear satellites. Your high-level cable connection is then configured the same as it would be if connected to your main speakers, just connected to your rear satellite speaker outs on your AV amplifier. Of course, multiple subs can be added to any of the 5 speakers in your system.

3. Single Speaker Connection:
This configuration is often used when two subs are used in stereo mode, or multiple subs are used in a 5.1 movie setup. When connecting a single speaker to the subs high-level input the 3 bare end wires are connected as follows:
RED and YELLOW are wound together and connected to the + (positive) terminal of either the speaker itself or the speaker out of the AV amp. The BLACK wire is then connected to the – (negative) terminal of either the speaker itself or the speaker out of the AV amp, depending on where you placed the red and yellow cables.
A common movie setup is to have a larger sub on the LFE (Low-Frequency Effects) via a phono sub out, and a smaller sub on the centre channel via the high-level cable. The addition of a centre sub enhances and breathes new life into the dialogue and your movie experience takes on a new dimension due to the amount of action and low-end bass produced through the centre channel – the sweet spot of a 5.1 system.

You could be missing out if you haven’t experienced additional subs on various channels ?!?
Have the benefit of small satellite speakers then add a small sub to whichever channel or channels you wish to turn into a full range speaker without having to accommodate or pay for large bulky floor standers in very often limited spaces.

The subwoofer setup options are endless, so please give our staff a call to discuss your requirements and we will be more than happy to help and to offer you advice on how to get the maximum performance out of your sub/subs on any given budget.
                        Tel: MJ Acoustics on 01945 467770
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XENO Satellites Answers
Can I mount my Xenos on the wall?
Yes. The Xeno XM1 have special brackets available for this purpose.
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Do the Xeno Satellites have any feet?
Each pack of Xenos have small rubber stick on feet that can be placed on the bottom of each speaker. Remember there are also dedicated stands available.
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What’s the best placement for my Xeno satellites?
A good rule of thumb is to have your front speakers close to your viewing area. Left and right mains should be approx 6′ (feet) apart for good stereo imaging and your centre speaker placed comfortably in the middle of the two mains. Your rear speakers can be placed at a similar width to the front speakers or maybe a little wider, say 7-8ft (2.13-2.44m) apart. Your rears can be placed beside your seated position or behind your seated position. Most AV amps offer various adjustable settings for speaker placement. Speakers that are not wall mounted should be placed on stands that are of similar height to your ears whilst in a seated position: 24-26in (61-66cm) is an average ear level height when seated. Everyone’s living environment is different, so speaker placement is largely dictated by surrounding furnishings – use as a guide only.
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Do the satellites only come in 5’s, or can I buy them in 6’s or pairs?
The Xeno system is available in 2’s, 5’s, 6’s and 7’s. they are in production now with a special Piano Gloss finish.
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Are the satellites good enough for 2 channel stereo?
Yes. If you want quality musical reproduction, the Xeno XM1s are for you. The Xeno XM1s have been designed to go with any one of our subwoofers to give a full range spectrum of sound. Dedicated specially designed stands are also available along with wall brackets.
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Are the Xenos magnetically shielded?
Yes. They are fully shielded, so there will be no problem placing them next to TVs or monitors.
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