High Efficiency Speaker Asylum

RE: so those tar-filled Altec horns, they are just for show?

143.127.131.4

LousyTourist

In Reply to: RE: it can be overdone IMHO posted by Tom Brennan on August 23, 2007 at 12:00:04

snake oil?

The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.
Bertrand Russell

Follow Ups:

RE: so those tar-filled Altec horns, they are just for show? - Steve Schell 20:47:20 08/23/07 (0)
The perfect horn would function simply as a immovable boundary for the air column, neither adding nor subtracting energy. The tar filled multicellulars were an ambitious, expensive assault on that goal, no snake oil in sight :^) . They really do work well.

Cast aluminum can do the job if it is thick and heavy enough to resist being set into motion by the pressures in the horn. RCA-fan's excellent AH! horns are probably the best current example. The original circa 1953 Altec H-811 was not too bad- it was actually heavier than the tar filled horn it replaced. Later ones got progressively thinner and more ringy though.
RE: so those tar-filled Altec horns, they are just for show? - Tom Brennan 14:58:53 08/23/07 (3)
Those horns (which I've owned) used large format drivers and were sled mounted, not bolted to a baffle.

I'm'a thinkin' a sled mounted horn using a large format driver crossed at 500 is more prone to vibration than a baffle mounted horn using a small format driver crossed at 1200.

What do you think?
- RE: so it's a matter of degree then - LousyTourist 05:19:00 08/24/07 (0)
  which I agree with. I tap my horns with the head of a screwdriver. If it rings like a bell, I caulk it till it don't. Doesn't take all that much, and I don't overdo it.
  
  Of course, I have the horn out, not bolted to the speaker then. So the extra mechanical contact should make it even more rigid, and ring a bit less.
  
  Just my opinion, mind you.
  
  The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.
  Bertrand Russell
- more energy as we go lower, yes! - Timbo in Oz 16:40:02 08/23/07 (1)
  ;-)
  
  But what else is reaching the motor and horn, from the bass?
  
  Warmest
  Timbo in Oz
  The Skyptical Mensurer and Audio Scrounger
  And gladly would he learn and gladly teach - Chaucer. ;-)!
  'Still not saluting.'
  http://www.theanalogdept.com/tim_bailey.htm
  - RE: more energy as we go lower, yes! - Tom Brennan 06:01:37 08/24/07 (0)
    "But what else is reaching the motor and horn, from the bass?"
    
    Good question and a possibility perhaps best ignored. ;-)

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