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In Reply to: RE: Recommended amp for Voice of the Theater (VOTT) Speakers posted by SoundSurfing on June 08, 2015 at 16:18:01
I owned a set of Altec A7-500 in 1972.
Don't expect any real deep bass, or real extended HF, no matter what you do.
Another issue is replacing those 40+ year old capacitors in the networks,
Follow Ups:
My comments in a recent post regarding the A7, A5 825 cabs. Modding to full Range . Add a supertweeter since that comp driver/horn does not really go much above 10KHz. Then add a subwoofer in the reflex cab below the 150-160 Hz MR horn. Just seal the connection between the horn and bass reflex cabinet and place an 15-18" driver in a bass reflex enclosure or an 10-12" driver in a tapped horn in there. You need to biamp the sub and adjust volumes. But now you have a 20-20Khz speaker. I did this once and it blew away the Wilson Wham which was more than a 100K dollar speaker system!
PS. Stiffen up/reinforce the bottom of the 825 cab and putty up the 511/811 horn to reduce ringing
luck
Rafaro
or consider a complete crossover replacement, something like this (I am not affiliated with the seller, just using the link as an example - there are other suppliers)
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