landrover defender stock

Upgrading the Defender

The Land Rover Defender is a true British classic design. Although, now sadly out of production, the longevity of the Defender means that they will be on (and off) our roads for a great many years to come.

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It’s design hasn’t changed much in its 70 years and, despite continuous improvements to comfort the audio, performance has always been poor. A relatively noisy environment coupled with small speakers has always meant the sound in the Defender has a lot left to be desired!

As Macclesfield in Cheshire is a fairly rural community there are a lot of these vehicles about as you can imagine and over the years I have developed an audio upgrade package which is powerful and discreet.

The first challenge is the speaker size. Being only 10 cm without modification means that the bass performance is limited. Step forward JL Audio! As the undisputed leaders in subwoofer design, JL Audio are perfectly placed to design speakers that have a much better bass response. This is not to say that a 4 inch speaker can replace a subwoofer but JL Audio’s expertise means that you will get a massive improvement over the stock speaker.

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To bring the bass response up to the required standard we need to fit in a subwoofer. The irony is that although the Defender is a large utility vehicle, there is almost nowhere to discreetly install a sub box without compromising useful space. JL Audio is here to the rescue, again, with their amazing sub, the 6w3.

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This astonishing unit is a true 6 inch subwoofer. It is optimized for a tiny enclosure of just 0.125 cu ft. I have developed a carpet trimmed speaker box that will fit just under the roll cage bar behind the front seat. One can be used but for best results we recommend one either side to create an effective 12 inch sub. This allows for a much smoother performance and really blends with the music.

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So now we have a sub we are going to need an amplifier. Again, space is limited but fortunately there is room under the driver’s seat for a compact unit. It makes no sense to just amplify the sub so we always install a multi-channel unit to power sub and speakers.

Here we must address the acoustic issues in the vehicle because of the speaker layout and the rather boxy interior of the Defender the sound staging is challenging to say the least. It is essential to install some sort of signal processor or regardless of the quality of the installed equipment, the sound stage will be poor.

I now always use the Audison Prima AP9Bit amplifier. This amazing unit has a full digital signal processor coupled to a powerful 8 channel amplifier in a very compact chassis.

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This amplifier can be configured in any way I need depending on the complexity of the installed system. In the Defender it can be a 5 or 6 way for one or two subs. I can then configure the signal processor for the car acoustics and the personal musical tastes of the owner. The software is very powerful, providing  full spectrum equalization on every channel with very fine time alignment available to place the sound stage where it needs to be.

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As a musician I can appreciate the subtleties of sound and this software allows me to bring out the finer details of the music even in a challenging environment like the Land Rover Defender. I am often challenged by owners who say you can’t get a good sound in a Defender but I guarantee that I can. I have installed many of these systems now, both for private individuals and for local dealerships, the feedback is always the same, that they just can’t believe how good this sounds. One customer even came back to tell me that the sound was better than in his Bentley GT!

It is true that the kit described above is extremely good but without the ability to carefully tune it the results would be arable at best. That is where I can make the biggest difference, my experience and exacting standards mean that this great equipment can be enjoyed to its true potential and I feel that this is true value.

 

Whatever you own, Land Rover, Lamborghini, Lotus or any other car with a challenging audio performance I can make it better, give Tim a call on 01625 432707 or email sales@carhomestereo.co.uk to start your journey to better sound.

 

Simon Says? Speakers Please!

For this instalment let’s look at speaker installation. The speaker is the last piece of hardware between your music and your ears and as such has an awful lot to do with the sound you hear.

The science behind the speaker is extremely simple; pass an electric current through a wire that sits inside a magnetic field and the wire experiences a force, vary that current and you vary the force. Of course this demonstration produces no sound but if we attach the wire (or coil) to a diaphragm (or cone) we have the nucleus of a working speaker. The electronics in the amplifier produce the varying electrical current and the speaker responds, creating the highly complex vibrations in the air that we hear as music.

The above description is of course highly simplified and in reality there are many more aspects to speaker design. We have to consider the weight of the moving parts, the resistance to movement within the materials themselves, the linearity of the magnetic field, the quality of the coil wire, the damping to prevent uncontrolled excursion, stability of the frame and so on and so on! Fortunately all of these considerations are engineering problems and this means that better engineering will lead to a better product.

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When Mr. Ford or Mr. Audi or even Mr. Porsche are told that they have to put speakers in their cars their first consideration is not about quality even when they enlist the help of respected Hi-Fi companies. Their overriding concern is one of reliability. A blown speaker is a warrantee issue and that costs money. The trouble is that a speaker that can survive heavy metal hard core country rap at full volume has to be made super resilient. This speaker is not going to be able to respond to the subtle nuances of any quality musical performance.

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At Car and Home Stereo we are always going to install a high quality speaker, carefully selected to match the vehicle and musical tastes of the customer. This is where our installation skills are needed. The average car door is a challenging place for a speaker. It is a steel box that is often wet inside, can be freezing one day and very hot the next. There are moving parts within it and it is subject to a large amount of vibration and noise. Let’s look at a typical installation addressing each point.

First of all we carefully remove the inner trim making sure that all clips and seals are retained. After this the next job is to treat the metal skin with sound deadening material which will absorb road noise and any vibrations within the door.

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Particular attention is paid to directly behind the speaker as this will absorb the sound generated by the back of the cone and prevent reflection back into the door panel.

Once the outer skin has been treated we apply a foam barrier to the inner skin. This forms a watertight seal and acts as a thermal and acoustic barrier. This keeps the car warmer in winter, cooler in summer and again reduces road noise. The difference these treatments make to a car is astonishing.

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Now we come to installing the speaker. The factory units are often built to fit so we must make panels and collars to allow a perfect fit to the door.

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It is very important that no moisture gaps are left as it may come as a surprise to know that doors are designed to let rain flow through them. Any gaps could lead to a wet floor so we make sure everything is sealed with high quality silicone, both the collar and the speaker, this also ensures no air gaps to compromise the speaker performance.

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Quite a lot of work but absolutely worth it. These Audison APK speakers sound great anyway but by treating the door they are at least 30% better.

If you would like to know more about how we can improve the sound in your car please call Tim on 01625 432707.

Sharp and Sleek Bose Soundtouch Speakers

We are proud to introduce the latest addition to the Bose Soundtouch family, the Soundtouch 300.
This innovative sound bar offers a level of flexibility and performance that has never been seen before.

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Bose has always been a technology led company and over the years have developed a range of home audio systems that have revolutionised the way we see, and use Hi-Fi.

The Bose Soundtouch platform has taken the wireless, networked audio market to new heights of performance which, coupled with its elegance and simplicity of use has made it the market leader.
The Soundtouch 300 is the first in a new range of home theatre systems that feature amazing performance, stunning looks and an unrivaled feature set.
The new black glass top has been engineered by one of the most famous automotive glass producers in the world while the sleek design draws from years of in house development.

At the heart of the system  is the new sound bar.

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This can connect to your TV via HDMI or optical ensuring complete compatibility.
It contains the now famous Bose AdaptIQ software to ensure the best possible sound in any room regardless of size or shape and once connected to your home internet network you can stream all your music to it via WiFi or Bluetooth.

But of course it doesn’t end there as there are also a couple of optional upgrades.

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If you enjoy the power and performance of modern films you should add the incredible Acoustimass 300 sub. This relatively small unit can be mounted anywhere in the room as it utilises a wireless connection to the sound bar. All it requires is a mains connection. The AdaptIQ software can perfectly integrate the sub into the acoustic environment.

The second optional upgrade is the Acoustimass 300 rear speakers.

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Again these use a wireless connection to the sound bar so no more trailing cables to the back of the room. These will add a true surround sound experience to your movies and music!

This is the first of a whole new range of amazing products from Bose that will once again place it firmly at the top of everyone’s must have list.

At Car and Home Stereo we will be stocking the full range of these systems and we would welcome you for an audition at our showroom on Sunderland Street in Macclesfield, Cheshire.

 

 

If you would like to know more, please don’t hesitate to call us on 01625 432707.

Instrumental Interlude

This week, an instrumental interlude to our weekly blogs on the world of car & home audio engineering, as we pause for breath and take a look our passion for making music.

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Tim is a keen musician and plays guitar for a local band in his spare time. Being active on the creative side of music allows Tim to better appreciate the aims and results of sound engineering. There’s nothing quite like hearing your own sound back in crystal clear quality!

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Here at Car Home Stereo Macclesfield, in the Heart of Cheshire, we take pride in our passion for all sides of music and sound. If you get excited for all things music & sound, make sure to get in touch – we love a good natter!

We look forward to seeing you.

Selecting a Subwoofer : The Nitty Gritty

Most music consists of a full range of audible frequencies, from low bass (bass guitar, cello etc) to high treble (cymbals, piccolo) although a notable exception is John Cage’ Four minutes and Thirty Three seconds. In simple terms – the lower the sound, the longer the sound wave and the more energy required to generate it. In practical terms – bigger speakers and a more powerful amplifier.

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“Bass is an essential part of music and is the part that adds the drive and excitement, try to imagine Michael Jackson’s Billie Jean or Prodigy’s Fire Starter without any bass, for example.”

“Can’t we just use a more ‘bassy’ speaker?”

To explain why this is not really the answer we need think about what a speaker is doing. In its simplest form a speaker is a vibrating membrane that is generating sound (pressure) waves and to produce lower sounds, the speaker cone has to move more slowly and further. This is no problem on its own but at the same time we need it to produce the mid and treble frequencies. These sounds require a very quick response and result in a very complex vibration pattern. Expecting a speaker to do both low and high frequencies inevitably ends in a compromise of both. The practical result of this compromise is at best a muddled, less defined sound and at worst a distortion that will lead to the destruction of the speaker. The only solution is a dedicated bass speaker, a subwoofer.

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Fortunately there are a wide range of compact, high performance woofers on the market now. Speakers that will operate in very small enclosures and take up minimal space. In a lot of cases, where I’m upgrading a factory Bose or Meridian system, I can use the existing bass speaker location for a completely stealth installation. In many cases I can use wheel wells, under seat locations or custom build enclosures in boot recesses. Even when none of this is possible there are woofers from Jl Audio and Hertz that offer spectacular performance from a unit little bigger than a couple of shoe-boxes.

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At Car and Home Stereo my system designs are always sympathetic to the vehicle but most of all it is my passion for music and great sound that drives my recommendations.