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Where would you measure temp?

Sorry if this is a dumb question but where would you measure the temperature of a SS amplifier if you wanted to monitor that it is within range of the spec? Case top, heat sinks...look for the hottest spot? I have a laser thermometer which I assume is appropriate but not exactly sure where to take the sample.

Thanks!
richard_stacy
lak's avatar
lak
4,714 posts
 
I'd look for the warmest spot on top of the amp.
rrog
1,958 posts
 
Since the heatsinks are there to dissipate heat from the output devices, I would say the heatsinks would be the place to measure temperature from.
herman
2,277 posts
 
.

What is the spec for how hot it should get? Don't think I've ever seen that specified.

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almarg's avatar
almarg
9,670 posts
 
I second Herman's comment. The question is unanswerable without knowing what location on the particular amplifier the spec is defined for.

The only temperature specs for amplifiers that I can recall seeing are either for ambient temperature (i.e., the temperature of the surrounding environment), or for the heat sink temperatures in the specific case of some of the Pass Labs amps. The manuals for some of the Pass Labs amps talk about heat sink temperatures being about 25 degC above ambient (i.e., typically 50 degC or so), with thermal protection mechanisms kicking in at 75 degC.

Regards,
-- Al
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