Altec Voice of Theatre Freq Response roll on / bass - diyAudio
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Old 25th November 2013, 07:54 AM   #1
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Default Altec Voice of Theatre Freq Response roll on / bass

hi, anyone can show me the BASS roll/on - in room - of the VOT??

thank sin advanced

cheers

P.S.:mine friend need a supersub!!
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Old 25th November 2013, 10:09 AM   #2
djn is offline djn  United States
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I never got mine down below 60hz-ish. I was running the 515s. They needed subs, but where great midbass horns.
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Old 25th November 2013, 10:49 AM   #3
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OK,
Thanks

60 Hz 2nd order??

Cheers
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Old 25th November 2013, 10:53 AM   #4
djn is offline djn  United States
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Not sure what you are asking, but I let them roll off into the subs without a crossover on the Altec going down, just the subs going up.
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Old 25th November 2013, 10:56 AM   #5
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I 'm asking if the natural roll on of the woofer - in room - is 60 Hz , 2 nd order
high / pass ...

cheers
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Old 25th November 2013, 10:59 AM   #6
gk7 is offline gk7
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... 2nd order??

Itīs a ported box. For a "HEAD DESIGNER" you ask rather strange questions ...
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Old 25th November 2013, 11:02 AM   #7
djn is offline djn  United States
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There is a mod somewhere on the net where you close off the bottom of the A7 and fill in the inside side flares so you turn it into a compression horn which raises the low end rolloff, but then you put an 18" JBL sub driver in the bottom. I heard it once and was very impressed and was going to do the same to my rig, but sold it and bought the Edgarhorns.
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Old 25th November 2013, 11:52 AM   #8
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Itīs a ported box. For a "HEAD DESIGNER" you ask rather strange questions ...
yes,
excuse my ignorance about VOT,
I design direct radiation hi-fi speakers, only!

so 60 Hz 4th order high / pass?

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Old 25th November 2013, 11:54 AM   #9
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There is a mod somewhere on the net where you close off the bottom of the A7 and fill in the inside side flares so you turn it into a compression horn which raises the low end rolloff, but then you put an 18" JBL sub driver in the bottom. I heard it once and was very impressed and was going to do the same to my rig, but sold it and bought the Edgarhorns.


thanks
interesting, but mine friend want a separate big mono subwf ! biamp of course..


anyone can show this freq response of the VOT??

cheers
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Old 25th November 2013, 12:03 PM   #10
Pano is offline Pano  United States
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With the stock (large) ports they don't go down very low. If the ports are better tuned, you can get almost another octave. In room response of mine has an F3 in the 30s. I'll dig up a response curve for you later today, after work.

But an F3 circa 50 Hz is common. These are not what I would call a "Supersub".
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