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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
georgehifi's avatar
georgehifi
10,312 posts
 
http://www.me-au.com/html/me850hc1.html

Cheers George
csontos
1,311 posts
 
Hi George. Yes, I will observe it climbing from turn-on to warm-up also. By 'cold' I meant not having yet played music. But as the amp is taxed, current will fall off ime.
fishing716 OP
316 posts
 
3D bass sounds exactly what is leaving
When I haven't listened to music for at least 1 hr.
The bass is 3d sounding wide & deep
After about 30 minutes or so the music changes and bass looses full sound becoming anemic.
Also Dynamics have decreased.
Sound goes from robust to comprimised
What is the solution?
mapman's avatar
mapman
22,333 posts
 
"What is the solution?"

Hasn't changed.

Need to change amp or speakers, until you find the combo that floats your boat. It's called a system upgrade, right? Assuming speakers stay for now and amp changes, switching to a more beefy dedicated power amp that can double down to 4 ohms would be the most effective strategy to follow to help cut to the chase.
mapman's avatar
mapman
22,333 posts
 
Fish, until you make a change to try a more effective pairing of speaker and amp, not sure there is much else to say.

Once you have that in place, then additional tweaking may or may not be needed as well from there. IT all depends on how "finicky" you are able getting a particular sound that you seek. Its the typical scenario for any "audiophile" . It may take some time and money but if enjoying your music to the max is your goal, it should be worth it in the end.
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