Bass leaves after amp warms up?


I don't understand-after my Musical Fidelity M6i amp warms up for about an hour I notice the deep bass & kick drum aren't the same.
They sound less musical with loss of weight/depth.The notes are there but the moving of air have left.Sound is has much less impact and boreing.
I had the same problem with Bryston amp so there is no defect with amps nor with the rest of my equipment/
PSB Synchrony one speakers,AQ cables,Bryston CD Player.
My question has anyone heard similar & is there a plausable reason?
fishing716
The mis-wiring is certainly a big catch, but I don't think it would have caused the bass-disappears-after-an-hour problem you originally had. Guess we'll find out.
I think the law of diminishing returns has overtaken us. I never did like Danish cheese.
Was certain Alaister said Red treble,black bass/Red treble & black bass...It turns out from top down the correct way is Red Treble/black treble & Red bass/black bass..
Could you clarify in detail what this means? After thinking about it for a couple of minutes, I have no idea.

In any event, glad some progress appears to have been made.

Regards,
-- Al
Al, have you ever hi-jacke4d a thread? If I were you I would seriously consider it.