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

Showing 4 responses by acresverde

The dropout in sound as described seems to fall in line with what one would encounter if one phase of the signal/incoming power feed were to drop out somewhere along the line. Preamp volume control or ac outlet problem possibly? However, I cannot reconcile the fact that it only seems to occur after warmup with my hypothesis.
I'm with you Seikosha. I very seriously doubt that Fish's audio gremlins have anything to do with the amp.
Mu guess is that if you were to hook up your old MF integrated you will have no further problems with your bass. I'm sure the miswiring was the culprit (or, at least, that the MF wasn't). At any rate, a happy ending, it seems.
But if the the AQs were miswired, it shouldn't take an hour for the bass to go south. Yet I still don't think there is/was anything wrong with either the MF or the PSBs.