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Sound becomes less open/smeared (less detailed)

Hi all.

Strange phenomena but when I play music (and leave my set on for days) the sound becomes less detailed (smeared). I know it's the pre amp (Bryston BP25).

After switching it off and then switching it on (after waiting a couple of minutes) the sound is more open and detailed. 

It's strange because I also have the general experience when listening to stuff which has been turned on not long ago, sound is a little harsh and grainy at first. With use it gets more fluid and smooth. But my experience with this preamp is many times the opposite (but just after many hours).

Can someone explain this behaviour?

 

 

vhond
dekay's avatar
dekay
6,163 posts
 

I thought that caps needed to be removed from circuit (one side maybe?) to accurately measure them.

 

DeKay

 

 

 

emergingsoul
1,525 posts
 

How long can you cold storage a solid state amplifier?

vhond's avatar
vhond OP
35 posts
 

For accurate measurement you indeed have to un solder the caps.

Cold storage is not the thing with my preamp.

daledeee1's avatar
daledeee1
675 posts
 

Maybe Bryston would just drop new board it it?  They make good stuff.  Reliable

devinplombier
1,637 posts
 

Storage is actually more damaging to electrolytic caps than regular use. I would go so far as to say that being on 24/7 is probably the best scenario for longevity, as long as operating conditions are within spec of course.

Manufacturers usually guarantee a six-month shelf life for electrolytics, although in real life they do last much longer.

@emergingsoul what exactly do you mean by "cold storage"? That’s usually synonymous for refrigerated.

 

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