[sdiy] SAE 2200 PA Help

[M. Falconi]

My power amplifier is burning out........sigh!
Its a SAE 2200 100+100 W made in USA in 1978, i love it....
i have two final transistor 2SB554 - 2SD424 and two driver transistor
out of use.
I found the final Transistor but the driver marked 11-00150 and 11-00151
i dont know this
Anyone can tell me equivalent or found for me schematics?

Thankyou and excuse me for my bad english

Maurizio

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Maurizio Falconi - Siena - ITALY