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Old 10th April 2012, 01:25 PM   #1
beeah is offline beeah  United States
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Default WTB: Pro (Hi-eff) woofers

I'm looking for a pair of LF drivers with the following characteristics:
  • fs < 40Hz (lower the better)
  • dB/1W/1M > 96 (higher the better)
  • Qts ~= .3 (give or take, within reason)
  • $ < 100/pair incl. shipping
  • fully functional
  • able to crossover at at least 800Hz, preferably 1200Hz
Basically, a driver for a large (~4-6 cu. ft.) BR cabinet to be mated with a compression driver on an Altec 511B via an active crossover.

e.g.:
Dayton PA380-8 <== hint hint
Eminence
MCM
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Old 10th April 2012, 03:01 PM   #2
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I have a pair of McCauley M1520 15"ers if interested. Not sure they go much lower than 45 Hz free resonance though. These will be $200 for the pair or a cool trade will take them. They are heavy as hell
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Last edited by hatrack71; 10th April 2012 at 03:04 PM.
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Old 10th April 2012, 03:30 PM   #3
beeah is offline beeah  United States
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I'm afraid they won't dig nearly deep enough... Thanks for the reply.
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Old 10th April 2012, 03:37 PM   #4
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Hey, I am looking for something simliar, only >90dB @ 1W, 8 ohms nominal, and in an 8" or 10" diameter. I'd like to use it as a woofer, so Xmax >=5mm would be nice, and Fs < 40Hz. This seems to be somewhere in-between home audio and pro audio driver offerings.

-Charlie
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Old 10th April 2012, 05:48 PM   #5
beeah is offline beeah  United States
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Quote:
Originally Posted by CharlieLaub View Post
Hey, I am looking for something simliar, only >90dB @ 1W, 8 ohms nominal, and in an 8" or 10" diameter. I'd like to use it as a woofer, so Xmax >=5mm would be nice, and Fs < 40Hz. This seems to be somewhere in-between home audio and pro audio driver offerings.

-Charlie
http://www.parts-express.com/pe/show...number=290-290
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Old 10th April 2012, 06:58 PM   #6
GordonW is offline GordonW  United States
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So, basically, to recap- you're looking for a 15" woofer that will give around 96dB sensitivity in a 4-6 cubic foot cabinet? With those parameters, you can reasonably expect about a 36 Hz f3 point, with a vented box (6 cubic feet- for smaller box, you'd have a higher f3 or lower sensitivity).

If you're expecting more low bass extension than this, you either need to accept a larger box, or lower sensitivity. Hoffman's Iron law is, well... iron.

Regards,
Gordon.
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Old 10th April 2012, 07:49 PM   #7
beeah is offline beeah  United States
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The box is a function of the driver. I need to define the driver to determine what the box is. Yes, an f3 of 36Hz is roughly what I expect to get.

I'm living with Cornwalls now, so a box > 6 cu. ft. isn't a concern.

Are you suggesting a different route? I'm pretty set on a two-way configuration.
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Old 10th April 2012, 09:46 PM   #8
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Default WTB: Pro (Hi-eff) woofers

I have a pair of MNNce Alpha 15's, excellent condition. Specs & pricing would be "close" to what you're looking for. MAYBE trades. Let me know. Thanx.
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Old 10th April 2012, 10:41 PM   #9
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Originally Posted by beeah View Post
Ewwwww... I usually stay away from that particular brand. Matches specs, however.
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Old 10th April 2012, 10:46 PM   #10
Illusus is offline Illusus  Canada
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I'm in the same boat. Two way with Altec 902 on CD waveguide and 15" woofer. I had a pair of JBL E140 and 12" waveguides so I built the cabinets around them but tuned for JBL 2226, now I can't find 2226s at a reasonable price...well I can but my wallet is unreasonably thin. I'm selling off everything I can. E140 sounds great but has very little output below 50Hz. I like bass.
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