HMV Model 2404 Back Panel
The HMV Model 2404 back panel has four AL102 power transistors bolted to it with plastic covers over them. In the above photo I have takes two of the covers off so that I could see the transistors. This amplifier has four DIN input sockets, and an FM aerial socket. There is also a mains voltage selector. The speaker outputs are through 2-pin DIN sockets, and the plugs for these are readily available online.
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HMV Model 2404Electronic Engineering
Servicing
Vintage Potentiometers
Power Amplifier
FM Radio Circuitry
Pre-Amplifier
Back Panel
Power Supply