In-Cabinet Speakers
Posted by Robert J [IP: 194.112.60.129] on October 31, 1998 at 19:34:56:
In Reply to: In-Cabinet Speakers posted by Andy N on October 31, 1998 at 11:24:52:
Hi Andy,
I'll attempt to help,If you built use MDF as it has great malubitily and is fairly inert you can get it with Maple and beech facias that can be stained and/or varnished,If you are using standard production speakers I will assume you are as you didn't mention,puting a box within a box can cause a a mutitude of problems
If you build a large cabinet across a front wall to mount the LCR's you will have to "dampen the encloser" there are various ways of doing this. If I were doing it I would place the speakers on a polymer based substance there are several comercailly available but the one I would use is called "blu tac" and is available though stationary supplers.(the other stuff cost a fortune and is the same thing)you could use spikes but they require a lot of work to set up and direct and seem to add a shrill quailty to the sound.
to Dampen the cabinet you could use a combination of "Rockwool" insulation the stuff used in home constuction between the walls and in loft/truss spaces it helps dampen and breakup standing waves and "Dynamat" as used in the Space shuttle there is also a cheaper version of that can be found in car Hi-FI accesory shops is marketed by Rockford Fosgate.It has an uncanny ablity to dampen MDF I am suprised that speaker manufactures haven't got in on it yet.
you can sandwich it between two pieces of the stuff or just stick it on.
There is also some stuff comming out of Sweden called "noise killer" you can spray it on but its expensive but good.The material you need to cover the grills you should be acoustically transparent you can again find that at the car people but a cheaper source would be a hobbist shop ones that sell speakers/drivers and ICs and resistors there are still some around the money saved will buy some software.
The most important thing when building a cabinet is rear access to cables and lighting to work by in the space....Crucail,if its near the wall and access is tight you will curse the day you ever started the project.
so racks that slide out are a good Idea but diffcult for me to explain but you will work it out and don't forget space for future applications and equipment
you may change the speakers to something bigger just pack around the space with more Rockwool. I hope this is what you were looking for Robert J
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