15" Sonotube...tiny footprint, lots 'o low end extension

Or if you can go tall, go with Nelson Pass' 14-footers

http://www.passdiy.com, under Speakers section

The final single driver design is pretty cool. Going to need another 18".

wavelength @ Fs = 48ft.

1/4 wave is 12ft, pretty tall. Can be reduced using fill.

From what I understand, you will want the Area of the opening of the sonotube to ~ equal the Sd of the subwoofer correct?

I happen to have a bunch of 12" wide 1" thick PVC that is 12 ft long, two of them, I'm using them for a long sonotube (joined by a box that is an additional 1.5 cu ft) and an original ED audio E12A. it's great, I won't have to have a baffle, the 12" sub fits perfectly into the pipe. these bitches are heavy though, takes two people to move one.

Not really sure why this was closed...maybe I screwed something up

Anyway...1" thick PVC? Sweet bejeezus, got any extra?

If I remember from the thread on CSo, it was liberated from a construction site, and everything else was to heavy for them to lift.

yea, I'm still going to assemble it, and soon too!

Thats going to be nuts.

Could you give me a couple details on how the box works? (the port or whatever it is) and how much change you dropped on this setup?

I was also looking at the the frequency, SPL graph and I noticed that compared to some of the smaller cabinet setups on Zaph audio that are much more peaks and dips in the graph. I was just curious if this is something that comes with BIB and if its something I would noticed audibly or even care to notice. Not trying to bash the BIB at all, just trying to gain a better understanding.

If you really want the full BIB education, there's an excellent but long thread on DIYAudio - when I say long, you could probably get through Milton's Paradise Lost in less time than it would take you to read that thread. But there's a wealth of information there.

They work pretty much the same as any tuned quarter-wave pipe does, http://quarter-wave.com/ has a bunch of theory on that. So does DIYAudio, if you do a quick search.

CSS FR125's were/are pretty reasonable in price...

I was also looking at the the frequency, SPL graph and I noticed that compared to some of the smaller cabinet setups on Zaph audio that are much more peaks and dips in the graph. I was just curious if this is something that comes with BIB and if its something I would noticed audibly or even care to notice. Not trying to bash the BIB at all, just trying to gain a better understanding.

Really good point here - the BIB is a full range (or semi-full range with a supertweet) design, with no crossovers at all. It's not going to measure particularly well, especially when you compare it to a two or three-way design with computer-optimized crossovers like what Zaph builds. They're two totally different approaches, made with different goals in mind.

But something that looks hideous on paper doesn't always perform that way in real life

Are the graphs you're looking at (both on the BIB site and on zaphaudio) take any form of room gain into account at all? Something worth considering, and with a full range driver (as Jim mentioned) in a TQWT, you are going to have some rippling at low frequencies. Room placement can go a long way to smoothing these frequency response anomalies out.

Yes, read QW.com or check out the "Terry Cain's BIB; why does it work?" thread on diyaudio.com. It is a LOT of reading but it is worth the time.

Where did you order your speaks from...

Acoustic Visions (one of the dealers that has a forum here) sells FR125's, or at least used to...

So does Creative Sound Solutions in Canada.

Scott got his from Bob at CSS

If you're in the US, you can get them from Kyle at Acoutic-Visions

Changed the listening area... along with a new tv and added a prototype sub to the fold.

I'll get better pictures when I have some natural light in the room.

That looks great - I really like that TV!

I just need to pick up a receiver & build the center channel & surrounds.

What are plans for the center channel?

Likely dual NS3's + supertweeter.

Sweet!

Well, I'm moving on May 1, and want to finish the towers for the new place. Suggestions??

Stain them ?

I would stain them. that's it. They look so clean right now it's almost perfect.

Or just put a protectant on them and leave them natural.