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Old 21st Jan 2019, 11:11 am   #11
phut bang
Triode
 
Join Date: Jan 2018
Location: Wrexham, Clwyd, Wales, UK.
Posts: 47
Default Re: Grampian type 531 Amplifier

when it was original with poor op valves it used to give a measured 60w i would be happy with 60watts plus i can remember trying a mains transformer for output a very loud 1.5 watts once i have the amp working with the present transformer i will have to find a different one as this op transformer is pysically to big for chassis
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