I posted this info orginally on the wrong thread by mistake.
I was wondering if one of the subwoofer guys would double check my information on the following driver with the information listed.
Thanks...
The aim - Find an inexpensive woofer that you can build for the least amount with the best performance for it's class.
Try the following - JBL GTO 804
Ported - Chev
Driver temp 60
Tuning 25hz
box 1cuft
vent 2.0 - you'd need 2 in order to prevent port noise
2nd order butterworth @ 80hz
AMAZINGLY flat. Going to build one some day, just as an experiment....... Might be a candidate for a sonotube sub for a small room - no glossing problem.
Read more: Home Theater Forum and Systems - HomeTheaterShack.com - Re: Simple 12" Infinity Kappa VQ MidQ Plans
I'd post my results from Win but I'm not sure what to export them to. As familiar as I am with the A/V business, I know very little about computers- enough to be dangerous
The curve will change after you add the power and Hi-pass filter. Here's what I came up with, note that the hi-pass filter on the Bash 300 has been changed to 28.9 hz.
The curve will change after you add the power and Hi-pass filter. Here's what I came up with, note that the hi-pass filter on the Bash 300 has been changed to 28.9 hz.
I like that curve better your 2 port options are 2 x 6 x 35.5 or 1.5 x 8 x 35.5(for full width slot port). You will need a skinny sub. I'm not sure how we'd get the amp on that sub with a slot port. I'd recommend you build the sub passive and build a separate box for the amp.
Hp filter - I was thinking about foregoing the HP filtering and allowing a natural rolloff. Since most program material is over 40hz and in fact a good deal over 50, I think I'll be safe with a natural rolloff @ about 29hz. If I was using it as a HT sub I think a HP would be in order.
This slot port is a good idea - I think that may be the way to go.
I've looked at every which way for sealed but it's seems betters suited to ported. Even with a 30hz bump you start running into excursion problems. However the group delay is excellent.
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