power supply filter capacitor problem

Status
Not open for further replies.
i got a voxson r302 integrated amp.after switching it on ,speakers start moving very slowly ie,may be 1 hertz,this amp is very old.is it due to poor regulation of power supply.can anybody help me.after ten minutes the amp sounds very bad.if increase the bass,it will be more
 
i think it is manufatured in 1978.i am also not very sure.is there any chance of this type of oscillation if filter cap is bad.it is using two 3000/50v .it is a direct coupled amplifier in o/p stage.ifyou increase the base this oscillation increases
 
Status
Not open for further replies.