Marshall 10 watt combo clone

[pwdrive]

For the HT electrolytics you will need to know the peak voltage from the HT winding on the mains transformer because that's the voltage the DC HT will rise up to under no load conditions, the voltage of the HT winding on the mains transformer will be given as or will be measured as a RMS voltage so you will need to multiply that figure by 1.414 to get the peak voltage, whatever that figure turns out to be that will be the DC voltage the HT electrolytics will charge up to and be subjected to under HT no load conditions such as the amplifier valves not yet conducting, eg: when the amplifier is initially switched on.

Lawrence.