Where would you measure temp?

Thanks for your input guys.

The amp is Spectral and my question was poorly stated, sorry. The spec states, similar to Al's guess, that thermal threshold is 185 F but was wondering where is this temperature being measured? Here a paste from the spec...

Operating Temperature: 0 deg. to +50 deg. Cesius range,
32 deg. to +122 deg. Fahrenheit
Protection Features:
DC Protection Servo: .5 volt range
Current Limit Onset: 90 Amps
Thermal Threshold: Protects at 85 deg. Censius,
185 deg. Fahrenheit

Al...thanks so much for taking the time to check that information. Sounds logical to me and should be plenty close enough for my curiosity. You are correct, they are 360's and I do plan to take the samples after some decent use. It's not critical at all so I am not taking into account too many variables. It's mostly my curiosity.

A general comment about the amps while I'm on the subject...amazing. Listening as I type and I am astounded by the detail, speed, accuracy, clarity, depth...I could go on and on but nothing I have heard in my 30 yrs at this can do what Spectral can. Having said that, I am always surprised that they do not come up often in discussion. I assume it is the limited dealer network/production and possibly the specific system demands Spectral equipment requires but despite all of that I would still expect them to be mentioned more often. These amps are a decade old design and I would put them up against many of the new luxury car priced amps being marketed today. Ok...fanboy rant over!