Question about MTX JackHammer JH202 Car Audio Amplifier

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When i hook up my amp. i have all my wires hooked up right,

And when i hook the speakers up to it, it will hit for a second and then will go to protect mode wat could it be?

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This is a signal crash either your speaker wires are crossed (wrong wiring phase) or your RCA jacks need replacing also it could be inside your amp the solder lines may have fused. If after checking and replacing wiring problem persists return to MTX for repair.

Posted on Feb 04, 2009

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1 Answer

How to install kenwood 729s withno rca outlet on radio


You can run the speaker wires to the speaker level input on the amp or i believe you can run another set of speaker wires spliced into the existing wires in parallel to the speaker level input along with the speakers that are already hooked up if you are using the amp for a sub or other speakers that you have added to the existing system.

Apr 14, 2014 | Kenwood KAC-729S Car Audio Amplifier

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Speakers aint hitting????


i had the same thing happen to me and turns out my wires on the speaker inside the box popped off. might help

May 06, 2010 | Crunch PZi1000.1 Car Audio Amplifier

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I have two type-rs hooked up to a mrp-m1000 and its not hitting hard at all! but when one is hooked up it hits harder than two... so is it the way its hooked up or do i need another mrp-m1000 amp? or can i...


If the speakers are rated at 500W or greater, then you'll need two amps to get their full potential. When you connect two to a single 500W amp, each speaker only gets a max of 250W. Also, check the ohm rating for the outputs of the amp and the ohm rating of the speakers as well. Unmatches speaker/amp impendence also results in poor performance. If you connect two speakers to one terminal, the total impedence of the speakers falls by 1/2 (two 4 ohm speakers wire together will result in 2 ohm impedence). So, if you have an amp rated at 4 ohms, you could connect two 8 ohm speakers to a single output. Hope this helps some!

Feb 14, 2010 | Alpine MRP-M1000 Car Audio Amplifier

1 Answer

Everthing on the amp is hooked up right but the two wires from the amp to the cd player and its in protect mode how do i get it to play


The protect light comes on sometimes when the ohms of the speakers are not ran right. if I knew what speakers you had hooked up i could help a little better.

Jan 27, 2010 | Dual Obcon OB 2000i Car Amp

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How do i hook up the mrp-m1000 to 2 type r subs since it is a one channel amp? the subs r 4 ohms so it should work right?


hook the positive to positive and negative to negative on both subs then run wire to the amp the amp will see a 2ohm load

Jan 07, 2010 | Alpine MRP-M1000 Car Audio Amplifier

1 Answer

It plays for a couple of seconds and then runs over to protect mode and stays there


usualy means there is a problem with the speakers, they may be wired wrong, short in the wires or the voice coil in the speakers themselves. best way to trouble shoot is to power the amp with no speakers hooked to it, if it only goes ito protect with the speakers hooked to it, the the problem is with the speakers, not the amp.

Aug 17, 2009 | Kicker KX400.1 Car Audio Amplifier

1 Answer

How do i intall my amp?


first you need to run a power cable for the battery to where ever you are going to place the amp DO NOT hook the cable to the battery until the very last just wire it to the amp for now.next you will want to ground your amp hook the ground wire to the amp and the other end to a solid piece of metal in the car this is very important if you don't get good metal on metal contact you'll blow a fuse. If you can hide it well strip back a bit of carpeting and use sand paper to remove all paint from the metal and drill a hole for a screw. once that is finished you will need to run a remote wire from the amp to the car stereo usually these are the blue wire on the harness in the dash. once that is hooked up run the rca cables (reds and whites) plug in to amp and then in to back of cd player. once this is all hooked up and fully secure hook the power cable to the battery make good contact and if everything is grounded right you should get the lights on in the amp. Next step hook up the speakers run speaker wire from the amp to your speakers make sure negative goes to negative and positive to positive or you'll get clipping and it will sound like ****. that's pretty much the jist of it. if you have any questions let me know.

Mar 08, 2009 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

One speaker is working more than the other


I would replace the wire your sub is hooked up to and try hooking up the sub that was sparked to the opposite channel on the amp to make sure the amp is not the culprit. Also switch RCA cables L to R, R to L

Feb 02, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier

2 Answers

Factory stero to amp


If the amplifier has inputs for a high level signal, you unhook the wires going into the speaker and plug them into the amp, then hook the outputs up to the speakers. If the amp only has rca inputs, you need to also buy a line level converter. Then you unhook the speakers, hook the wires up the the converter, then hook the converter up to the amp, then hook the amp up to the speakers.

Please leave good feedback!

Dec 08, 2007 | Blaupunkt PCA250 Car Audio Amplifier

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