Mynamemynaim
38yrs a Naim owner
Looking, you have the 0 speaker returns to the rectifier end of the PSU?? If so try relocating the NEG 0 speaker wire to the clean end of the PSU used for the outputs...power up and wait 3 days. (may be longer) I know the preferred connection is as close to the transformer 0's as possible (dirty end of the PSU) but IMO the clean end of PSU to be better with the 300's . If its not revert.
How much F have you on the front end PSU?
Thanks for the tips...appreciated!
So, yes... the speaker neg is on the end nearest the transformer (must admit I thought it was supposed to be) but as its literally a straight copper track to the other end I didnt think it would make a lot of odds....But of course I will try it and see (and swop back if not as you suggest)
All the caps are 10K uF on all the boards so front end has 30K for plus and same for minus
Its possible this might be a little much for the amp to be "light on its feet" ...do you think i should swop the final Nichicon's for 6.8k ?
thanks for all the help