Even when you turn up the volume?

Yes. I turn up the volume so the music is playing normally, but I need to have the BASS knob set to zero. If I turn the BASS knob up it sounds too bassy.

I think you may have to replace the electrolytic capacitors on the main amplifier board.

The tone controls in this design are in the output stage feedback loop,and as the spec of the capacitors go out  as they age,it affects the response of the whole amplifier.

The manual is on site,but can you solder etc?

Regards,

Nick

Thanks. I can solder and I am even the proud owner of a soldering iron  🙂

I've looked at the schematics and cannot work this out.

Any chance of a list of part numbers? I take it Dillon can supply the capacitors.

cheers

Nick

I would replace all the blue cased capacitors on the amplifier output board,they are almost sure to be out of spec by now.The unit must be fifty years old,but well worth preserving!

I dare say that Martin has a kit of these capacitors,but they should be readily available,although axial type capacitors are not used much nowaday's

Regards,

Nick.

Hi, Martin says he hasn't any and I can get them off ebay. I can find close replacements but not exact values. Are radial OK to use as opposed to axial?

For example, I need

1) 100µF  6.4V
Will 100µF  10V be OK?

2) 4µF  40V
Would 4.7µF  50V be OK?

cheers

Nick

Where do I find the manual on this site?

We already discussed that and I already answered that on email - remember?

Manuals are available for download from our main website (minimum silver membership level required).

Martin

PS.

This is the second post of yours today that I have had to edit.
Please don't violate posting rules.

Yes, but I have found these much closer values, but cannot find exact matches, so we were discussing something a little different.

Are you saying that if I look hard enough, I should find exact matches? I've looked on ebay, RS and Maplin. RS don't have exact matches and they are a comprehensive supplier.

I'm thinking that standard values may change over 50 years?

I take it I should not post links to other sites?

Sorry, I was just trying to be helpful.