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thinking of going with one of these methods do drive the subwoofers both equally
http://img30.imageshack.us/img30/7599/scan0001pd.jpg
http://img16.imageshack.us/img16/4858/scan0002yc.jpg

got the carpeting on. its is horrid, but is acceptable for my first.

http://img18.imageshack.us/img18/1659/p1050521p.th.jpg
http://img715.imageshack.us/img715/9233/p1050522.th.jpg
so far:

i made this video of the lge crash with a frame-by-frame view
http://www.youtube.com/watch?v=sAp8oGodxds

i am almost complete. need to install side handles and then the top side. put about a pound of polyfill in each sealed chamber. will update with pics and video later.

is there a good book out there that can tell me about what all the terms are and as well to explain more about what were talking about ?

Wanted to ask you; what's a good distance apart of each screw ? Is 6 inches sound or maybe more or less ?

Yes, the ports are sized according to the manufacturer's specifications according to the dual-bandpass design. Thank you for the reply Jstas and nice going for your 8,000th post !
I just cut up...

small update. I have cut the 4 inch diameter PVC ports now. When installing these, should I cover their outsides with dynamat to give them some weight or just nothing ? Or will the dracon stuffing...

Brilliant !

Pondering today the efficiency of electronics, in general the hotter they get the less efficient they are and therefore the less power they can output with a constant, unchanging supply current.
...

I noticed something to add to the calculation. We have to add the exterior walls of 1.9cm on each end as well. I also did some work in excel to verify everything.


Dual Bandpass Box Details for...

Freaking bump

I would appreciate if someone with some building experience can double check my cut-out sheets for my box.
81.7x46.6cm 2 sheets (top/bottom)
46.6x43.6cm 2 sheets (ends)
81.7x43.6cm 2 sheets...

Thanks for the reply . I think that the 79.6293cm is correct, because the box total volume equals to 110L.

"Overall External Dimensions
Width 35-41/100" (89.94cm)"
Good one, Polk employees.

bump, did some algebra on the proper width of each chamber and they don't add up to the total box width. ie 62.68 cm width versus 90cm in width.
chamber one volume (40.64*43.18) x = 32000 which X...

this one here
http://www.polkaudio.com/caraudio/subbox/subbox_plan.php?id=47&mesurements=standard

The guide is not overly user friendly and polk does not give the length of each chamber, they...