Sovtek MIG50H (detailed)

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Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 17:28

I have a slightly better scan of the schematic than the one usually found on the net. If you want an even more detailed scan, please send me a message.
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Re: Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 17:33

My particular amp (stock) differs from the schematic in several ways.

When there is nothing plugged into the high gain input, the screen of gets connected straight to earth without going through R10. There is another connection in green (on the enclosed schematic) which differs, as well as two extra resistors, and some with differing values.

I have also noted the correct fuse values and the AC voltages coming from the transformer.
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Last edited by Sir Fayzalot on 27 Jul 2018, 17:35, edited 1 time in total.
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Re: Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 17:34

There are two resistors in the heater circuit, they are not on either schematic.
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Re: Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 17:50

Here is the preamp section. Note that R52 is really a capacitor and it has a capacitor symbol on the schematic as well.

(C)R52 and C5 were originally blue Russian caps, and R4 was originally a reddish brown Russian resistor, They are not stock.
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Re: Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 17:55

Here is the power amp section. Note that the black filter caps are not original. The amp came with Illinois Capacitors there (really).
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Re: Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 18:02

Detail around the power valves. Note that the 15K ohm resistor is stock, not Russian and not on the schematic (I bought this amp new).
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Re: Sovtek MIG50H (detailed)

Postby Sir Fayzalot » 27 Jul 2018, 18:04

Line output. I tried to record from this years ago, without success. I may try again.
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