Technical help

[Vladimir]

It's a dual winding transformer. The amp has a dual mono configuration, just with some savings in the transformer department. They can obviously fit two if they want to.

EDIT

The space is for this M6PRX Power Amplifier.

 

[Vladimir]

Found the relays, they are a bit tucked in. So there is protection on the outputs. It just doesn't work.

 

[Covenanter]

Ok, you've dug deeper than me.

I can't imagine a floating earth on a dual-wound transformer but you never know. It could be a wiring fault where they have earthed one winding and not the other. That wouldn't cause a problem (probably) until it was cross-wired.

I would still take the sub off and see what happens. It at least eliminates the possibility.

Chris

 

[peter h]

Thanks to all for your input - I will let you know the outcome of the checks by Musical Fidelity

 

[peter h]

Dealer has given me an Arcam A39 as a replacement. Has taken some running in but after a month nice sound but not quite as good as M6i (when it was working) although a better bass I think. It seems no fault was found with m6i but a part was replaced as a precaution(couldnt tell me which one) Arcam have told me to only connect a subwoofer via pre out as any other connection could damage the equipment, so it seems the problem all along may have been the subwoofer connections - even though I took pictures and sent them to dealer the first time it happened. I suppose the good news is I dont need the sub with the Arcam due to better bass. I still have a niggling feeling that the M6i was better sound though*help* Thanks for all your input to this post