Originally Posted by mayhem13
Your Css driver looks pretty good at 2.2 cu ft ported. Fairly flat til 25hz then rolls of about 2db per 4hz at 21hz tune. Port is 81 cent squared area by 81 cm long-Much larger than your slot-i suspect tuned to about 28.5 hz at 16 in. long. Would be good for music but lacks low end extension for HT in a large room. Corner load it and it should out perform it's original driver but keep input power below 350w or the port will chuff a bit.
Mayhem, you were very accurate.
I used the DVD-Audio test DVD and TrueRTA spectrum analyzer software to run some tests, and sure enough it did not have much output below about 25 hz. it still sounds ALOT better than what i had before.
Also I am using a new amp as well.http://www.mcmelectronics.com/produc...me=MCMProducts
on another note:
The subwoofer outer diameter was slightly larger so I was not able to get it to completely seat in the original counter flange. so it kinda raises out from the front of the box a bit. I can't even put on the original speaker grill, I guess I will have to start working on my own DIY box.....
Also I noticed that the SD12 doesn't have a felt or rubber gasket to seat it with the wood. is this normal on high end subs? do the DIY guys put their own gasket on?
Also, my SD12 "did" come with this really large thick rubber gasket that is way to thick and wide to use for anything from what I can tell. anyone know what it is for? or was it just packing material?