accobraman said:
I have to downsize... need help.
A few years ago I did an experement and the results were fantastic, I think!. I installed two 18" JBL #2245H speakers as subwoofers and I used my basement 8'H x 20'W x 46'L as the box/enclosure. I built two transfer ports made with 1 1/4" MDF in order to have the speakers mounted in the conventional vertical manner. I did not want to mount them horizontally in the floor as it may have had some effect counteracting gravity's pull on the cone.
We have a new house now and I need to build two new enclosures. My wife would be most pleased if the two new sub-woofer cabinets do not exceed 10' in height x 2' deep and 2' 6" wide. Does anyone have access to design calculations that can test/model this size or suggest an optimum speaker box size within my constraints?
Fyi; I drive the speakers with two mono Haffler amps, about 350 watts each.
Regards.
If I understand you correctly, you will still be using your basement as an infinite baffle cabinet? You just want a design for the plenum, the size of your current opening in the floore above? If so, I may have the exact solution, and if you want, you should add 2 more of those baby subs
Tom Nousaine did exacly this in his new home. And he published the paper on it but you'll have to use your library to get the paper
He uses 4-18" if I remember and can swap in 8-12" or 15" .
"The Subwoofer that Shook the World", Nousaine, Tom, Sound & Vision,' Jun 1999, pg 105-109.
Not sure his plenum size will pass muster with your wife, but probably close. Check it out. I think this is what you need.
Just make sure you wale brace it well on the outside as it will flex like crazy.
By the way, yours isn't the largest