This is a page for BassList Members only!! :- )
I have no commercial or personal relationship with Adire, I only bought these closeout
woofers to retrofit my own Quadripole Subwoofers...

I have a very nice pair of similar woofers for sale here.

Here's some shots of the Adire DPL-12 woofers... I'll be posting some freq response curves here soon...

Looks pretty nice... cast basket, dual gold plated spring loaded BPs... dual VCs...

Big foam half roll, and a monster dustcap...

more later - to get back to the main website, click on the bear logo up top!!

Here are the freq resp curves:

This is the DPL12 installed in the <5cuft Quadripole test box, with PR. The driver has not yet really
been broken in fully. The response in this curve is room response at 10 ft, approximately listenting
height and listening position. The right hand cursor is at 47Hz, and the left is 19.6. You can see that
the whole thing is within 3dB from about 55Hz (there's a 4th order LP filter there) down to about
23Hz., with the left cursor point read out on the bottom at 4.5dB down from the max... not too
shabby. The intended application is to meet a speaker (and ESL in this case) as a SUB Woofer, not as
a full range Sub/Woofer - although this driver will work in that application (see curves below).

Here's the DPL-12 measured nearfield about 6" from the driver's dustcap, with the xover. You can
see the effect of the xover and the effects of the loading in the box, while the PR's contribution is
invisible from this mic position. This is pretty much what one would expect to see here, since the
PR starts loading the driver and reducing its excursion as much as an octave up. The PR here is tuned
to about 23Hz.

This is the DPL-12 without a crossover loaded into the Quadripole test box. The response is nicely smooth
out to 200 Hz and beyond. The mic position is nearfield, about 6" in front of the dustcap.As before, droop
below 50Hz. is due to the PR and box loading,and is expected.

With initial tests on program material, the box (which is around 75+ lbs alone) displaced substantially
on big bass pulses! On Mickey Hart's DAFOS, cut 8 "Gates Of Dafos" the displacement was so great
that I had to put about 50 pounds more of weights on top of the cabinet to keep it flat on the floor!!
The full configuration should be fairly awesome.