BillFitzmaurice.info

I found some NOS Ampeg 10" drivers and hope I can use them for a BFM design. They're made by Eminence, 8ohm, 200watts. There's some number on the magnet sticker that says 86-531-08 and 10138A. Any ideas what the model/specs are?

Ampeg won't tell you, Eminence might.

I emailed them before I made this post. Hopefully I'll hear back soon.

So Eminence emailed me back today (you guys are the best!).
Here's the specs:
Re 7.31ohms
Le 0.81mH
QM 6.93
QE 0.21
QT 0.20
Xmax 3.18mm
Pmax 225watts
Bl 16.29Tm
Re 7.31Ohms
fs 40.9Hz
Le 0.81mH
Mms 28.9grams
QM 6.93
Mmd 25.1grams
QE 0.21
Cms 0.525mm/N
QT 0.20
Rms 1.071N*sec/m
Xmax 3.18mm
Vas 91.3liters
Pmax 225Watts
SD 350.1cm^2
Bl 16.29Tm
VD 111.2cm^3
Coil Diameter 2.50"
EBP 199.4
Gap Height 0.375"
Magnet Weight 56 ounces
Efficiency 2.95%
Winding Width 0.625"
SPL 96.7dB 1W-1m

I have a feeling I can't use this for anything any help?

The very low Qes and short xmax makes them marginal at best. I can't figure what Ampeg would have used them for, they'd be almost useless for bass. Did Ampeg ever make a 1x18/2x10 like Peavey? That's the only use I could see for them, crossed over at 200-300Hz.

These are from the old style 210SVT cabinet that was designed to be used over the single 15SVT.
It was used for mid extension and is nothing like the small stand alone 210 they currently have.
There were not very many of these made but a lot of people want them now.

Glad I didn't buy any yet! As soon as I saw the xmax, I knew they'd probably be no good. Thanks for the help.

bmf wrote:There were not very many of these made but a lot of people want them now.

Really!? This guy said he has 30 driver for sale. hmmmmmmm.....

I was speaking of the 210 cabinets. I have no idea if the drivers had other applications.