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Top-end response of Altec 288C/803B combo.?

75.164.229.154
Posted on June 25, 2016 at 12:48:11
Coner
Audiophile

Posts: 3703
Location: S.W. Washington state, USA
Joined: November 17, 2001
 So I'm building a network for this Altec horn/driver, and need
to know where to cross to the tweeter. 803b is a large 300 hz.
multicell. I'm doing 500Hz to the 803b.

 

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RE: Top-end response of Altec 288C/803B combo.?, posted on June 26, 2016 at 04:44:46
Scott L
Audiophile

Posts: 353
Location: Knoxville
Joined: February 2, 2001
 One option is to abide by the "decade rule".

Cross to your tweeter of choice at 5k Hz.

 

about 8k pic, posted on June 26, 2016 at 07:55:36
Kloss



I crossover around 8k to my t900a or I just use without tweeter

 

RE: Top-end response of Altec 288C/803B combo.?, posted on June 26, 2016 at 20:38:26
Don Reid
Audiophile

Posts: 890
Location: Rural NW Georgia
Joined: February 2, 2001
Contributor
  Since: April 1, 2010
 Kloss, this is a bit off topic for the thread, but I have often wondered how classic horns such as the old Altecs compare to newer horns such as the Oris horns or Azuras. I am old enough that I heard many of the Altecs in stereo stores and night clubs but instead of pursuing those I have settled on newer offerings, specifically the Oris 150s with Fitzmaurice HT Tubas doing bass and with Fostex t900a bullet tweeters on top.

I hope I am not putting on the spot too much with this question, but if you retired from speaker designing and building what would you choose as your system to use for enjoying music? If you feel the question is an unreasonable one just don't bother to respond.

I dream of an America where a chicken can cross the road without having it's motives questioned.

 

RE: Top-end response of Altec 288C/803B combo.?, posted on June 26, 2016 at 22:19:18
horny
Audiophile

Posts: 745
Location: holland
Joined: October 17, 2003
 I have played with the Oris150 AER BD3
very nice
then the Orphean with ref 2010 bass cabinets
better
and now Altec a5
the best of these 3

 

RE: Top-end response of Altec 288C/803B combo.?, posted on June 27, 2016 at 08:10:46
Hornlover
Manufacturer

Posts: 2529
Joined: March 8, 2002
 Altec designed them to roll off above 8k (the upper limit of the optical soundtracks used at the time). There was nothing but noise above that, so the roll off helped to suppress noise.

 

RE: Top-end response of Altec 288C/803B combo.?, posted on June 29, 2016 at 19:14:05
Kloss



I do enjoy Altecs and I do have 288c in one system but over all I prefer TAD in a radial or a RCA in a big multicell. http://horns-diy.pl/ makes great horns I've enjoyed a few. I do not use the oris or azuras today since it was much to hard to integrate with tweeters and bass systems. I use t500amk2 or t900a in most of my systems and have with the altecs but a 288c will sound fine without tweeters. Still designing modern restoring vintage re-purposing etc. So no end all system for me at this time. If I had to pick one would be my RCA Shearers with 15 cell- 9448 and 515b or EV SP15 woofers t500amk2. Or TAD 4001, T500AMK2, Iwata horn, community extended leviathans for bass with 4 515b this is pretty much what Im running today. I did enjoy the Altec 803 288c 515b with Lansing 18w5 w bins. But I stored it for now.

 

Thanks evrybody...., posted on June 30, 2016 at 12:34:59
Coner
Audiophile

Posts: 3703
Location: S.W. Washington state, USA
Joined: November 17, 2001
 I had a hunch it would be 5K, so that would be a good place to start.

Thanks for inputs....

C

 

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