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Old 13th December 2005, 12:31 PM   #1
FORMD is offline FORMD  United States
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Default Help With 3 Channel Magnavox

I HAVE A 3 CHANNELL MAGNAVOX FROM A 1960'S CONSOLE. IS IT POSSIBLE TO REWIRE IT FOR 2 CHANNELS?
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Old 13th December 2005, 02:45 PM   #2
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This message may show up twice, since my first reply generated some sort of error.

Anyway, the third channel on these consoles is typically a mix of the left and right channels, sometimes with a low pass filter. There are many schematics for these magnavox consoles available, so if you can report a model number I can perhaps give more details.

Maybe I do not fully understand your question, but why rewire it ? If you dont want the center channel then just dont use it. If this feels like you are wasting a perfectly good amp, then the "rewiring" that I would do is to remove the center channel amp and use it for some other project. If it is on a seperate chassis this may be easy to do, otherwise it may not be worth the effort.
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Old 13th December 2005, 05:39 PM   #3
kevinkr is offline kevinkr  United States
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I vaguely recollect at least some of these magnavox three channel amplifiers used the "center" channel amplifier to drive the woofer(s) and the right and left amplifiers to drive mids and tweeters. In such cases the left and right amplifiers generally had smaller output transformers not designed for low frequency operation. The one I recall had a pp amplifier for driving the woofers and a pair of se amps for everything else.

Kevin
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Old 13th December 2005, 06:04 PM   #4
Trout is offline Trout  United States
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Quote:
Originally posted by kevinkr
I vaguely recollect at least some of these magnavox three channel amplifiers used the "center" channel amplifier to drive the woofer(s) and the right and left amplifiers to drive mids and tweeters. In such cases the left and right amplifiers generally had smaller output transformers not designed for low frequency operation. The one I recall had a pp amplifier for driving the woofers and a pair of se amps for everything else.

Kevin
Are you sure its magnavox? I have never seen a maggie with 3 channel outputs. I have seen lots of motorola's with that setup.

I have a schematic that covers several of the Motorola's 3 channel setups.

Generally speaking, The OPTs on the left & right channels wont be very useful as they are geared toward mid's and high's. Bass being a center channel with a much larger OPT.

Chassis numbers would be very useful.
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Old 14th December 2005, 04:10 PM   #5
kevinkr is offline kevinkr  United States
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Its been so long since I saw one of these console amplifiers I can't say for sure. I know I have seen motorolas with this set up, but do have a possibly faulty recollection of seeing at least one magnavox that was similar, and your comments about the opt applied in this case also..

Kevin
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