Magnatone 192-5

[C Moore]

I am rebuilding one of these amps. How do I know what wattage resistor to use for the power supply resistors? They are the 4.5k and the 10k resistors at the A-B-C nodes. Would I just use the voltage drop specs on the schematic to figure out the wattage requirements?
Thank You

[M Fowler]

The 4k5 is in place of the field coil speaker and your not replacing that with a choke so this 4k5 resistor should be of higher wattage like 3 watt flame proof and the 10k a 2 watt flame proof.

You can get by with smaller wattage but why?

[C Moore]

Thanks Mark -
If I can make them fit, I will probably just go with 5 watts then.
Thank You
I will definitely take some readings when I am done.
Thanks Again

[M Fowler]

I enjoyed building my Gibson EH150 with 6SQ7 preamp tube and replaced the field coil with choke, a real blues amp.

Hard to get good quality octal preamp tubes for 6SQ7 that is.

Mark