Audio Systems: amp, ac voltmeter, source cd

Question
the mid amp cuts out when i turn the volume up why does that happen i would have to turn the car off then itll turn back on for a little bit longer

Answer
Are you loading the amp with too little impedance (ohms)?

Is the gain set right?

The purpose of the gain is to match the signal volts RMS coming from the source (CD player, etc.) to the input of the amp to prevent clipping (damage by over powering).

Here is a guide that will help you set the gain correctly http://www.datafilehost.com/download.php?file=6d26c621

You'll need a multi-meter (AC voltmeter), Microsoft Excel and a way to burn an audio CD from an MP3.

If you don't have Excel, let me know.