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Need manual for mtx 421d - MTX Thunder 421D Car Audio Amplifier

1 Answer

electronic & computer repair& servicre

Master 12,061 Answers
Posted on Aug 20, 2010

electronic & computer repair& servicre

Master

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Http://www.retrevo.com/support/MTX-421D-Car-Amplifiers-manual/id/18680ci265/t/2/
Please go to this above link, and download what you need.

3 Related Answers

hoyzee1

150 Answers
Posted on Jun 04, 2009

SOURCE: MTX Thunder problem

Make sure that your connection at the battery is still good-sometimes the wire corrodes up front when your system is installed for a long time-so check that out and of course the fuse that you installed a foot away from the battery so that you dont burn your vehicle down if a short occurs somewhere down the line

Anonymous

655 Answers
Posted on Jun 16, 2009

SOURCE: I have a mtx 421d. can I over heat if I connect

Hello jaimemm_77,

The MTX 421d is a mono amp. It only has one output channel.

If you are asking about hooking up only one channel to the input, then no, the amp will not overheat. But the output will be significantly reduced. It would be best to use a "Y" adapter with a single female and two male connectors to split the channel into both inputs.

Hope this helps.

Anonymous

443 Answers
Posted on Jan 31, 2010

SOURCE: i have a mtx thunder 421d. I've had it about 5

If you have proof of purchase(invoice or receipt) showing the purchase date and you are still within the warranty period then yes it would be repaired by MTX under the warranty guidlines, and by the way MTX is great at customer service and they are great to work with(very fair)!!!!
Keep in mind that the seal on the bottom of the amp cannot be broken or that will void warranty coverage.
Give them a call, you will be glad you did!
800 225 5689 - MTX Customer Service & Amplifier Service Center
Good luck !

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My mtx thunder 421d I just got has the red light staying on all the time, I have hooked up a rca converter and the amp wont play my sub, is that light supposed to be red all the time.

The LED should be red. If you are not getting power to the sub, make sure the speakers are connected properly to the amp. Also make sure that the gain control is turned up. If it is all the way down, you will not hear anything from the sub(s). If none of that works, it is possible that you have a blown sub. If you smell a burnt smell near the speaker magnet, there is damage to the voice coil in the sub.

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Feb 25, 2011 • MTX Thunder 421D Car Audio Amplifier

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My red light stay on all the time

Check your wiring and see that your power wire is not in contact with any part of the body of the car. I also recommend soldering the ends of all wires, to prevent them from splitting especially on the amp terminals.

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May 26, 2010 • MTX Thunder 421D Car Audio Amplifier

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Blown Voltage regulators

that first number most likely is 2N414A. Goto NTE cross refference web site and put this number in, it will show you a cross for it with a picture of the transistor to match it to the one you have. Hope this helps good luck.

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May 24, 2010 • MTX Thunder 421D Car Audio Amplifier

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