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What is the first component of an amp to go out of spec?

post #1 of 4
Thread Starter 
What is the first component of an amp to go out of spec and how many hours does it usually take?  
post #2 of 4
Quote:
Originally Posted by flargosa View Post

What is the first component of an amp to go out of spec and how many hours does it usually take?  

 

What do you mean by this? What usually fails first and how long would the amp be playing to do that? That depends on the amp's heat management and what the problem is to begin with. Theoretically, an amp can run for hours on end provided the heat is managed properly, but you cannot be absolutely certain of this just by touching the chassis, since there can be more heat accumulating in one component like the op-amp that is too small relative to the rest of the amp that it probably won't be felt on the chassis, although yes some parts of the chassis don't dissipate heat equally as they don't receive the same amount of heat (like on the hottest part, the power supply).

post #3 of 4

it could be anything... if its a poorly designed circuit.

Assuming a stable circuit design, with robust thermal management, tubes and filter caps come to mind.  Pots can get scratchy over time.

post #4 of 4
Quote:
Originally Posted by kramer5150 View Post

Pots can get scratchy over time.

 

Stepped attenuators specially, they need regular meintenance. 

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