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Those of you interested in learning more about how stuffing a box with fiberfill can effect performance should check out the following url (if you haven't already). Link Removed I believe this link was posted to this forum several months ago and it helped me understand how SVS got such a low...

Hi, Isaac Welcome to the club! :) I'm also a recent member as I just finished up my Shiva based sonosub. I'm just curious, is there a reason for sticking with the 6" diameter? I know there's been massive discussion regarding port size and compression characteristics, and I'm by no means an...

Andrew, That's a very generic question. Try forming an intelligent, specific question and your chances of getting an answer increase dramatically. To help aid in this, you might want to download Adire Audio's version of LspCAD here . This would be the optimal program for determining what size...

MattE and Pat, Make sure you read my post over on the PE board about the 300-793 Amp. You're gonna want to modify this amp before you use it.

Help! I can't decide between the PE #300-793 and #300-794. Will the remote volume/xover be that useful? Or should I get the more powerful #300-794. (albiet only listed as 22 more watts at 4ohm). Either way I'm going to modify the "boost" circuit for a "SURF-like" rumble filter. I've been...

Hi Julian,

I've been doing a ton of modeling with the Shiva in approx. 105L tuned somewhere between 18 and 20Hz, hoping to achieve (on paper at least) somewhat similar performance as the SVS 20-39CS. I would be using the AVA250 for power. I read TN's review of the 20-39CS in TSS, and I noticed he stated...

Greg, I'm just curious...how'd you come up with the 86.5db/W/m rating? It does seem a bit more likely than the 96.4 audiobahn lists. And I want to make sure my understanding of under/over-dampened (or is it damped?) is correct. Underdamped = higher Q (more midbass hump, "typical" commercial...

Very nice job, Rob! 85L tuned to 19Hz sounds very tempting. I'd love to see some SPL plots on that alignment in your room. Find those test CD's! :) BTW, what size room do you have, and (if you don't mind me asking) what was your total cost for the project?

Julian, Thanks for taking the time to look at the ALUM12 in LspCAD. It would be nice to have the full version, since WinISD doesn't seem nearly as accurate. I know some important data is missing from the T/S params, but I'm almost positive the Xmax is for p-p. A one way xmax of 31mm would be...

Welp, I've decided to build my sub. I used to be a car audio nut and so I've built 5 or 6 sub enclosures before. It sure was easy to get killer bass in a car. So now I'm about to build a sub to compliment my Def Tech BP8B mains / C1000B center / BP1X surrounds. I want to keep the budget under...

I'm in a similar situation as Charles. I just moved into a new home with bedrooms upstairs and of course the crawl space below. One side of the room is totally open/joined to the kitchen area and the other side of the room has a fireplace in the middle of the wall. My questions are: 1) If I...