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tesla

(A)

I have a Altec 416-8b speaker I've had forever. I'm wondering, was it used for a particular product? or was it general purpose?
Would it make a good sub speaker?

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A pre-T/S relic. - Bill Fitzmaurice 11:34:27 07/09/04 (8)
Don't get me wrong, this was one of the best drivers of its day, but to get it to work properly it has to be mounted in something like the A7. Its basic specs are fairly similar to todays musical instrument drivers with a low FS and low Qts and very good efficiency, but the 26 cu. ft Vas is huge, requiring a very large cabinet, and it's not much good below 50 Hz even when so mounted. Totally worthless in a sub unless it's in a very large horn, and even then it can be easily outperformed by a modern driver like the Eminence HL10a. But for someone with an empty A7 box worth its weight in gold.
- Re: A pre-T/S relic. - tesla 22:15:55 07/09/04 (7)
  Thanks Bill. If it was 16 Ohms, I'd try it in my Leslie 222. Perhaps I can find someone who needs it :)
  - Try it anyway - Bill Fitzmaurice 12:53:36 07/10/04 (6)
    It should be a good match with a Leslie, and the impedance should not be a problem, assuming the Leslie is tube driven, though I'd suspect it would be quite a bit more sensitive than the original driver.
    - Re: Try it anyway - tesla 21:51:59 07/10/04 (5)
      I will. The Leslie is tube driven, btw.
      - Re: Try it anyway - Alpha Al 13:49:23 07/11/04 (4)
        
        In Reply to: Re: Try it anyway posted by tesla on July 10, 2004 at 21:51:59:
        
        I would not recommend an 8 ohm woofer in your Leslie. Assuming it is two-way with passive x-over (like the 122, 127, 145 & 147), this would affect the crossover frequency of the woofer. I think these cross over at 700hz, but with an 8 ohm woofer, it would be at 350hz, leaving a gap between 350 and 700hz (where the horn rolls in).
        Who knows, it might still sound good, though. A lot of people roll out the mids with a graphic EQ!
        Hope this helps-Al
        
        Actually the low-pass will go higher by an octave - Bill Fitzmaurice 05:40:25 07/12/04 (2)
        
        In Reply to: Re: Try it anyway posted by alpha al on July 11, 2004 at 13:49:23:
        
        and the effect of this may degrade the sound but then again may make it better; only in the trying will you know. This not being a hi-fi speaker what counts the most is the result.
        
        Re: Actually the low-pass will go higher by an octave - Alpha Al 07:04:41 07/16/04 (1)
        
        In Reply to: Actually the low-pass will go higher by an octave posted by Bill Fitzmaurice on July 12, 2004 at 05:40:25:
        
        You are exactly right! What was I thinking? This would leave a midrange hump caused by overlap, not a gap!
        
        True - Bill Fitzmaurice 12:56:00 07/16/04 (0)
        
        In Reply to: Re: Actually the low-pass will go higher by an octave posted by alpha al on July 16, 2004 at 07:04:41:
        
        and that could be a very good thing with a Hammond, assuming it doesn't make it too clean.
        
        Re: Try it anyway - tesla 16:18:24 07/11/04 (0)
        
        In Reply to: Re: Try it anyway posted by alpha al on July 11, 2004 at 13:49:23:
        
        Thanks for the advice. The crossover on the 122 amp is 800hz. I guess I can try it, and I might.

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