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Magnavox 138BB Mono Tube Amp
Magnavox 138BB Mono Tube Amp
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Old 17th October 2018, 01:16 PM   #1
john65b is offline john65b  United States
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Join Date: Jan 2005
Location: Chicago
Default Magnavox 138BB Mono Tube Amp

I purchased this Mono amp to modify into a Guitar amp, but it is just too nice...it is very very clean with zero rust, which is a surprise for its age.

It is stock from an organ (?) and has two prong power cable and no switch. I did add a fuse on hot wire and removed the Death cap. No other modifications were made.

I recently opened a thread to find schematic and link is below.

Looking for Magnavox 138 series Schematic

It is a Push Pull 6V6, with a 12AX7 driver and Phase Inverter and a 5Y3 rectifier.

I also noted a bit of arc flash in rectifier due to the somewhat large PS cap, so I was using a Octal Base fitted with with SS diodes as the rectifier with no issues.

All tube included.

Pics forthcoming

$120 + ship or pick up in west sub of Chicago?
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