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Two suggestions : - Replace RCA connectors : they are time bombs - Paint the solder points on the control boards using a pcb...

Finally starting in on the infamous pl-4000 pre amp. The guilty suspect that was not happy with any board wriggling Main control...

Many confuse the function of the power amp volume pots with that of gain control in power amplifiers. Those volume pots are not...

Got the NOS Pioneer Sendust heads measured with the DE-5000. Very similar results to each other, that's good. They are similar but...

Many confuse the function of the power amp volume pots with that of gain control in power amplifiers. Those volume pots are not...

Doubtful that he will achieve his goal by putting another distortion producing element in the signal path. This comment is interesting...

When I do THD & N sweeps, my figures always look better at higher gain, till clipping of course. .

I purchased a PL300 in need of repair. I thought the build quality was pretty marginal so I decided to redesign the board rather than...

I purchased a PL300 in need of repair. I thought the build quality was pretty marginal so I decided to redesign the board rather than...

Loaded, both channels driven?

When I do THD & N sweeps, my figures always look better at higher gain, till clipping of course. .

Doubtful that he will achieve his goal by putting another distortion producing element in the signal path. This comment is interesting...

Maybe you seen em. Maybe not.

I purchased a PL300 in need of repair. I thought the build quality was pretty marginal so I decided to redesign the board rather than...