I building a subbox for my 10w3, and I have a few questions. I have some 3/4 mdf lying around, but not enough to make a complete box, I also have some 3/4 plywood. Will it make a difference in sound quality using 2 different woods in my box?

Next question, does any one know about much clearance there is under the back seat in an extended cab. I want the 10w3 to fire down, but I am going to have 6 inches just for the sub to sit without touching the back wall of the box, will there be enough clearance for the sub to fire downwards?

The Last Question, the specs for the 10w3 are about .625- .90 cubic foot of air space, what difference in sound will there be from a smaller box built to spec (.625) to the larger box built to spec (.90)? Difference in sq or spl?

thanks in advance for all the help...
Jason

 

Mixing woods in a sub box really isn't THAT bad of an idea, for th emost part you can get away with it without really hearing much of a difference, but you absolutely don't want to use plywood in a sub box PERIOD!! Plywood's structure is just not consistent enought throughout to be a reliable pressure barrier. I don't know much about the clearance under the back seat issue, but there a kits you can get that lift the back seat if you don't have enough room. And as for putting the sub in a smaller box, are the recommended specs you have for a ported box or a sealed box? If you are talking sealed, then you will need to build a VERY strong box when going smaller than recommended, go with 5/8 MDF all around, using a lot of bracing, and use polyfil. You will have to wait for someone else to tell you about your ported box options, because I don't have any experience with building or applications of ported boxes. I hope I helped

 

3/4 is thicker than 5/8. The plywood is not as dense as MDF and may resonate if used on the long panels. Use the MDF for the biggest parts and the plywood for the small ends. You should be ok. Box size is determined by the woofer used and the space you need to fit it in. If you are making a sealed box try to folllow the manufacturers recommended volume. A little variation is ok. Ported boxeds need to be tuned for the woofer. This is most easily done by port size. Box size is less critical. Search the web for box building sites. www.jlaudio.com has some tutorials.