$5 woofers at PE might work on OB...

[Godzilla]

How low might this cheap 8" driver go on an OB or H-frame?

8" General Purpose 8 Ohm Ribbed Paper Cone Woofer

I'm wondering how these might perform in H-frames (one or even two) powered by a sub amp as a slim subwoofer?

TIA

[chris661]

From memory, the mass-corner is Fs/Qts, which yields good results in this case.

I think I'd take 2 per side on a H-frame. At that price, you might as well buy a couple extra in case you blow some up

[Pano]

4 per side maybe. That's $16 per side. You might still have trouble getting down below the Fs of 45Hz.

[chazdrumzalot]

I recently tried an OB experiment with some very cheap "white van" type speakers. My buddy and I cut the speakers in half at an angle and then used iTunes to provide some semblance of a balanced response. What I can tell you is that while those cheap woofers did produce bass, it was pretty lousy bass. I got no impression of the clean, articulate OB bass people talk about. This leads me to suspect that there is a major difference between a "cheap" woofer like the alpha15 and a CHEAP woofer like what's in the white van speakers. That leads me to ask: what are the chances that this cheap woofer will really sound all that good? Isn't this the kind of woofer that shows up in white van speakers in the first place?

Maybe using 4+ per side will reduce distortion and improve SQ...

[Pano]

4 per side would give you a cone area of about 160 sq in, (I think) compared to the Alpha 15 at about 137 sq in. So each driver would not have to work too hard.

For the price of the Alpha 15 you could have 16 of these.

[onform]

They look like you could have some fun experimenting with them!

Is there anywhere in the UK/Europe that does these sorts of deals??

[chazdrumzalot]

Originally Posted by Pano

For the price of the Alpha 15 you could have 16 of these.

So what's the plan, guys? How about 8 per side, wired for a 4ohm load and 99db sensitivity; then put in an H-frame for a lower Fs and resulting lower Fo, and an overall sensitivity of 89db after dipole loss? I have to admit, it does sound appealing!

Question: can you place them side by side on an open baffle as opposed to stacking? So maybe it would look like:

OOOO
OOOO

or put a fullranger in the middle like...

O O
O O
o
O O
O O

[Tom V]

Or six? Arranged in a circle with the full-ranger in the middle?

[Pano]

That might be fun.

But don't be shy, do 16 per side. 12, at least.

[chazdrumzalot]

Originally Posted by Pano

That might be fun.

But don't be shy, do 16 per side. 12, at least.

And what will SWMBO have to say to that idea?