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Ty Unes
 
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Default Magnavox 6V6 Stereo Amp - Questions and Thoughts

I have acquired an old Magnavox console stereo. The turntable works but it's
motor-to-table mechanics are jerky and does not play records properly. No
biggie to me. I'm interested in the amp!

To get this started, I have posted some pictures of the stereo and amp on my
server. Try: http://2xl.homelinux.com/Audio/Magnavox_Amp/index.html.

The amp seems to be a 2-channel stereo amplifier. It uses 2 12AX7's for
drivers into 4 6V6GT output tubes with a 5U4GB rectifier. It has a 7025
tube on the input. I'm assuming it is a pre-amp to make up for the low
input signal coming from the turntable. This leads into my first question.
A 7025 is also a 12AX7. Why did they print 7025 on the chassis when clearly
they could have put another 12AX7 stamp on it? Is there something about a
7025 this amp needs? Seems to work fine with a 12AX7.

On the chassis underside, there is a capacitor that looks to have been cut
from the circuit. I know that this unit has been serviced before and I'm
wondering what (if any) significance this has on the amp. A picture of this
is he http://2xl.homelinux.com/Audio/Magnavox_Amp/badcap.jpg.

A few other questions I have someone may know.

What would be the output power range (for speaker matching) for this amp?
Any suggestions on upgrades for this amp? Is there a way to bypass the
extra input amplification stage to handle "line-level" inputs like from a
CD player or tuner?

I thank everyone for taking their time in reading my post.

Ty Unes -

 
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