20 Most Recent MTX Thunder 2-Channel Amplifier 502 Car Audio Amplifier Questions & Answers


http://www.retrevo.com/support/MTX-502-Car-Amplifiers-manual/id/23108bh332/t/2/
service manual for troubleshooting

www.caraudiohelp.com/newsletter/amp_protection_mode.htm -
http://www.bcae1.com/repairbasicsforbcae1/troubleshootingbasicsampinprotect.htm

Above, is how to troubleshoot, protection problems.

MTX Thunder... • Answered on Mar 28, 2010


Could be a blown speaker/sub or a wire is crossed in the sub enclosure.

MTX Thunder... • Answered on Jun 04, 2009


i dont know about the resisters but i had that proublem and it might seem to easy but check your remote wire coming off the deck (cd player)

MTX Thunder... • Answered on Jul 03, 2007


Unless your amp is 1 (one) ohm stable then you may have fried it. When you attach a 2 ohm load across a bridged amp then you have effectivly placed each output channel on a 1 ohm load. Not a good thing in most cases. Try hooking up ONE speaker on one channel and one input to that one channel one at a time. Then switch the speaker/input to the other channel and see if you can get either or both channels to work independently. Needless to say you must turn the amp off before you make ANY change in the wiring.

MTX Thunder... • Answered on Jun 25, 2007


Take this apart and look at the magnet wire windings look for any thing broke or burnt. If not it is very likely it is more cost effective to buy new.

MTX Thunder... • Answered on Jun 25, 2007


If you have to ask, take it to a repair shop.

MTX Car Audio &... • Answered on Dec 28, 2020


power to-battery plus ground;; remote''

MTX Car Audio &... • Answered on Nov 05, 2019


THE GREEN LIGHT SHOULD SHOW WHEN AMP IS POWER UP AN RED WHEN IN PROTECTION MODE

MTX Car Audio &... • Answered on Sep 12, 2019


Try eBay Often available there from private sellers

MTX Car Audio &... • Answered on Aug 25, 2019


I was having a similar issue. I checked every wire from the battery to stereo to amp, checked the ground, pulled the stereo to double check the wiring was all correct. Everything seemed good so I thought it had to be my battery not putting out enough power. Tested it and it was good. What it turned out to be was the connection from the power cord to the battery. It had a tiny bit of built up corrosion that was making the amp go into protect mode. Cleaned it up and hooked it back up and has been golden since.
The link attached is pretty straight up on what you need to check for different circumstances. I'm guessing it's a low voltage issue. Good luck

MTX Car Audio &... • Answered on Aug 23, 2019


Check the wiring 1st then go down the line...Check speaker connections..Look at your power,ground and remote wire hook up

MTX Car Audio &... • Answered on Oct 18, 2018


Since this is a vintage item, the cost is whatever the market will bear, wherever you're trying to sell it. I would suggest checking current prices on sites such as eBay, where one is currently being offered to sell at $200, while another is being offered for $90. The perceived value is what determines the selling price at this point, because the MSRP is long irrelevant by now, being that it's a discontinued item. If you need further help, I’m available over the phone at https://www.6ya.com/expert/reginald_bec291de192ca44f

MTX Car Audio &... • Answered on Jul 08, 2017

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