I am very excited to build this thing, however I have some questions. And yes I want to listen to music, but I also want my neighbors to know who has the best subwoofer. (especially those little kids, in little cars, at 3am)
Well here goes

Instead of a coffee can a 6” x 8” piece of PVC  or one of those premade ports available online be used?

Should 4” PVC be used for the bottom ports or one of those premade ports, or nothing?

Does the cabinet need to be stuffed with some sort of fill?How about the center section?

There is not much info on the diagram, is there any other advice you could share?

I am planning on loading it with two DAYTON TIT400C-4 15" TITANIC MKIII SUBWOOFER 4 OHM from parts express. Are these the way to go or should i use the less expensive not as high power rated Peavy Black Widows instead?
http://www.partsexpress.com/pe/pshowdetl.cfm?&Partnumber=295-420

I have a Samson Graphic EQ and a Samson 3-Way Crossover into a 1200watt QSC amp running in bridged mono with the two subs in parallel firing in the same direction. Is this the way to go or should I have them firing away from each other. I want solid tight bass, but I also want to get down in Hz  (to get the most out of some Pink Floyd and Captain Beefhart records)

Will it make a difference if I use a 1/4” laminate on top of the .75” panels? (glued on of course)

Thank You,
Michael Foy

Cavenut, you'll have to excuse 60, he just rambles and rambles..........


[quote author=cavenut  link=1162778476/0#0 date=1162774876]
Instead of a coffee can a 6” x 8” piece of PVC  or one of those premade ports available online be used? [/quote]
Yea, if you can find a port that size. PCV would be ok, provided you can find a piece. I'd hate to buy a 10' section for just a few inches.

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Nothing.

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Nothing. (I lined upper and lower chambers with automotive carpet pad. Made no difference. )

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Yes.

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I'll leave that one for "the driver professionals".

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Experiment. Play with it. Different rooms, different peoples tastes... My first try was to mount them in the center chamber, magnets together.

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The more (externally) the better. Double stack the MDF if you want. Less resonance! (Just remember, this suckers gonna be heavy anyway. How strong is your back?

Bob

Yea the QSC does Rock. Right now its powering a pair of PILE Compression drivers. With a couple of full size drop forged horns.

For a sub right now I have a Polk Audio PSW-450 which is now the 404. The 450 supposedly has 450 watts. I am now totally un-impressed with this sub.

I have an audio generator capable of tone down to 1 hert however I also have a few reel to reels with great bass. I can also lay my hands an Ashley RTA for measuring.
I can't wait to start,