Hi,
I have problem with this amplifier. It has some buzz on output.
First i thought that changing preamp 35V capacitors and adding 6800uf to main filter capacitior will help. But not significant. Maybe little hard to say.
Amplifier has preout-main in rca plugs and switch for interstage preamp connection. Amplifier has buzz when i switch it to internal preamp. But NO hum when i switch internal preamp off. If i connect another preamp to main in it buzz again. If i disconnect cables again NO hum. But when i plug bridge rca plug into Main in socket ( i made rca plugs with signal and gnd connected) it start to BUZZ again. Strange in the past power amplifier can do some buzz with rca plugs opened. But when i bridge them it was silent. Here is oposite. Amplifier BUZZ when has bridged signal and gnd pins or connected preamp (internal or external). Internal preamp don*t make buzz if i connect it to external power amp.
I have problem with this amplifier. It has some buzz on output.
First i thought that changing preamp 35V capacitors and adding 6800uf to main filter capacitior will help. But not significant. Maybe little hard to say.
Amplifier has preout-main in rca plugs and switch for interstage preamp connection. Amplifier has buzz when i switch it to internal preamp. But NO hum when i switch internal preamp off. If i connect another preamp to main in it buzz again. If i disconnect cables again NO hum. But when i plug bridge rca plug into Main in socket ( i made rca plugs with signal and gnd connected) it start to BUZZ again. Strange in the past power amplifier can do some buzz with rca plugs opened. But when i bridge them it was silent. Here is oposite. Amplifier BUZZ when has bridged signal and gnd pins or connected preamp (internal or external). Internal preamp don*t make buzz if i connect it to external power amp.