Amplifiers all incorporate some form of thermal protection. The most common is to have a set temp at which the amplifier will mute until things get back to normal. Heat is a by-product of generating energy unfortunately in this case.
Clipping dramatically increase average power over time. It's important to limit the instance of severe clipping. If you have the TMA 3202, it's rated for 320 Watts RMS @ 14.4V into a 4 ohm mono load. In car this means the amp is capable of 224 Watts @ 12.5V. Why is this important to know? Because it's how your installer will know where to adjust the "gain".
Ask him to set your gain the way JL Audio has taught him over and over again. Ohm's Law can be used to effectively set "gain" with some overlap.
Ohm's Law: Voltage = SqRt (Power x resistance). Here's what we do:
Determine Voltage Output SqRt (224 x 4) = 29.9V
Grab a test CD with 50Hz sine wave. He'll have at least one from a CleanSweep install.
Disconnect the woofer from the amp.
Set tone controls to flat and volume to 3/4. Insert CD
Connect VOM to the speaker outputs of the amp. Reading AC voltage here.
Turn the "gain" pot until the meter reads 29.9V and you're done.
Reconnect your speaker and enjoy.
Hopefully your installer will already know how to do this as it has been out there for years!
If you would like to see the process, you can
here.