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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
fishing716 OP
316 posts
 
I've had this result since putting the system together 1 year ago.
wilsynet's avatar
wilsynet
264 posts
 
Have you tried a power regenerator, like the PS Audio P5 or P3 power plant? Wiring could be fine, consistent and clean delivery of power might not be.

Buy from a dealer that accepts returns. If it doesn't do the trick, return it.
rrog
1,958 posts
 
"I've had this result since putting the system together 1 year ago."

The plot thickens.

I'm sticking with my original assessment. There is nothing wrong with your system other than you don't like it after it warms up. You want a richer tonal balance. How you get there is up to you. Try Vandersteens, Sonus Faber or any other speaker that is on the warm side.
fishing716 OP
316 posts
 
The sound & bass are 3D even hollographic at times.
Watching a dvd is like being at the movies..Then the bottem drops out,sound is flat & 2D.
Someone said normal bias allows music to get better when warmed up.
I feel my amp draws additional power & my speakers being 4ohms are a mismatch.
fishing716 OP
316 posts
 
This may be important:
I took out the power conditioner yesterday & my system has not had the usual bass/dynamics drop out:
I have pluged everything into the wall before,of course.
But this time I had the power conditioner unpluged from the wall.
Question:
Could the line conditioner have been robbing dynamics even if no components were pluged into it?
I'll know in a few days if the sound continues to stay dynamic or not.
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