High Efficiency Speaker Asylum

Posted by BFitz on May 25, 2000 at 15:35:42:

(Posted this earlier at bottlehead site, realized it may be more appropriate here...sorry for the double post if anyone is sensitive to that)
You can pick up some 4" (almost) full range at Parts Express if you want to play around with experimental line arrays, etc.
Part Number 269-469
Paper cone w/cloth surround, ~90dB, Qt ~ .6, Fs ~ 120Hz
These are good from about 130-18K - I have two that I measured, just bought 40 more. They measure fairly flat, at worst +/- 5dB, at best much better, not bad for the price. I was going to build a 16 speaker line array, around 6' tall for grins. Should end up at 8 ohms, well over 100dB efficiency. Will need another driver for the low end, though. Price is right at $0.95 (yessir 95 cents) each
They said they had 20,000 in stock. If there is interest, maybe i could post my measurements somewhere.

Addendum - just looked the the FE103 curve posted by someone else, these are much flatter than that, essentially flat right up to 18kHz.
There is a little peakiness from 1-5 kHz, and a broad perhaps 2-3 dB rise above 10kHz, but off axis this goes away. Definitely check these out for the $$$ - I'll have more listening impressions after my 16 speaker array is done, curves up by this weekend

Bob

Follow Ups:

• what is the best enclosure for these speaker drivers. Richard 14:23:47 05/28/00 (3)
  • Re: what is the best enclosure for these speaker drivers. BFitz 07:44:16 05/29/00 (2)
    • Re: what is the best enclosure for these speaker drivers. jeffk 01:18:30 05/30/00 (1)
      • Re: what is the best enclosure for these speaker drivers. BFitz 11:55:09 05/30/00 (0)
• I agree! mrh (Mark Hardy) 18:51:43 05/25/00 (3)
  • tips on Dammar? BFitz 21:26:47 05/25/00 (1)
    • Re: tips on Dammar? mrh (Mark Hardy) 06:11:08 05/26/00 (0)
  • Re: I agree! (just for fun) Doug Eisemann 20:32:15 05/25/00 (0)