SI BM 10s (re-coned with new parts)

[sundownz]

I bought out all of the QC failed SI BM 10s (old models) and re-built them with several changes:

1) Slightly longer flat-wound coil (original was round wire) - USA made coils
2) Narrower / Taller Surround
3) Tied down tinsel leads

Measured T/S Specs (coils in series):

RE: 6.89 ohms
Z: 8 ohms
Fs: 27.2 Hz
Qes: 0.56
Qms: 3.32
Qts: 0.48
Le: 2.8 mH
Vas: 31.1 L
BL: 16.2 NA
Mms: 124 grams
Power: 400 watts RMS

0.95 ft^3 SEALED BOX - F3 of 41 Hz
1.5 ft^3 ported tuned to 30 - 35 Hz for high output

http://www.sundownaudio.com/fs/10-07-08/CIMG1239.JPG

http://www.sundownaudio.com/fs/10-07-08/CIMG1241.JPG

I have about 40 of these...

$125 shipped in the continental USA for one
$240 shipped in the continental USA for two
$440 shipped in the continental USA for four

Ask about more than that!

These are blow-out items and sold with no warranty beyond a no DOA guarantee. I can built re-cones for them for a while as I did get about 25 sets of extra parts! They are pretty tough with a 2.5" diameter flat coil, though :)

Nice sounding drivers.

[Kenny_Cox]

looks pretty damn spiffy!

[el_chupo_]

Curses Jacob. I just got a pair of E8s...

depth?

Matt

[sundownz]

These are right at 5.5" deep.

[lyttleviet]

hmm.. I might pick up a pair..

[sundownz]

hmm.. I might pick up a pair..

Still have plenty to go around! :)

[theothermike]

pm a price for 3. if they are still available after dec.

if not ill have to get 8 8's wonder which ones