There is no getting away from the fact that every good car audio system needs a sub-woofer for a full range sound. By their very nature a sub-woofer needs to be large to play the frequencies required and it will also need to be in some kind of enclosure. So we have a large speaker in a fair size box, where is it going to go? Well that’s usually the boot. While the show car installations look great they can be a little impractical.
Just about room for a packed lunch in this one we made but on the plus side it did sound amazing.
What we often do is try to take up as little space as possible.
That could be by using one of the new breed of sub-woofers that are designed to operate in very small enclosures like the Audison Prima series.
These fabulous subs are completely at home in small boxes and are extremely slim as well. That means that even the 10 inch driver can virtually disappear into the boot leaving the lion’s share of the space free.
Sometimes however placing an enclosure in the boot is just not practical.
There might be a need for the whole of the load space, there might be wet items to carry such as bikes and prams or it might simply just look out of place. For those occasions we can build bespoke enclosures using existing voids so as to impose on the load space to the smallest degree.
That usually means fabricating with a composite of fibre glass and wood. We can mould these to be a perfect fit to the vehicle and when done right can sound amazing. The steps to producing one of these are always the same.
First we need to determine that there will be enough space.
All sub-woofers work best in a specific volume of air and it is essential that we do not restrict the performance by under sizing the box. Once we know that there is enough space we need to create a mould of the vehicle trim.
When I am happy that we have enough space the appropriate piece of vehicle trim is carefully removed and masked; before the first layers of fibre glass are applied. Once set this can be trimmed to the correct dimensions and the MDF front applied. Further layers of fibre glass are applied to seal the face to the enclosure. This can then be trimmed in an appropriate finish.
As can be seen, I like to line the inside of the enclosure with Dynamat sound deadening. This dramatically reduces any possibility of resonance and increases structural integrity.
By now the vehicle trim panels are all replaced and the enclosure can be securely mounted to the car. It is vital that the mounting is solid as although the enclosure is relatively light the subwoofer is not. This extra weight must be mounted in such a way that trim cannot rattle and of course the whole thing must be secure against movement during driving.
The final result is a discreet installation that uses a minimum of useful space.
I recently produced this enclosure for a Land Rover Freelander. As you can see it blends seamlessly with the vehicle and takes up no useful space. It contains the unbelievable Hertz ML2000.3 subwoofer. This 8 inch woofer has enough punch to fill the large Freelander with tight and deep bass and has a level of sensitivity that can play the lightest of bass notes.
If you would like to know more about our bespoke building service please call us on 01625 432707 or better still call into the shop on Sunderland Street in Macclesfield.