Question about Alpine MRD-M1005 Car Audio Amplifier

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Amp is getting hot

Have my m1005 hooked up to my alpine type x 12, and it seems to be consistantly pretty hot. i know it is putting out a lot of power and everything but i dont think it should be this hot. seems to be hooked up right and everything so if this is normal let me know but if you think you might know if something is wrong let me know thanks

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Re: amp is getting hot

Amp naturally get hot but not hot enough to burn your finger.if all the speakers working,no distorted sound(sound clear),the problem might be the ventilation(free air flow) of amp.check the blower fan if working or check the exhaust holes maybe it is blocked. here are the other reasons; 1.)speaker wires touched the chassis ground. 2.)mismatched speaker to amp impedance. 3)overdrive input or u tap low input(from amp) to high output(of stereo) 4.)ur amp is out of bias. u need an audio technician for this... hope this help u...

Posted on May 15, 2007

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yes you had a internal fault of the amp. the circuit that puts it into safe mode is bad or got confused and that is a very small chip on the board know as a op amp. needs to be repaired if happens again.

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I have 4/3/2 ch. alpine f-240 amp- i want to hook up four 6x8 3-way and one 12''sub. the amp has bass EQ on ch. 3. how would i hook it up and get the most power. can i put the 4 6x8 bridged all together...

run two 6x8s on each of the front channels of the amp. then depending on the sub you can bridge it on the rear channels.only if its a single four ohm. if its a dual 2 ohm sub run each coil on each channel. 1 coil-1channel. the other coil-the other channel. amp should run fine may run a little hot since it will be doing all it can do at a safe ohm load. just make sure it is mounted in a well vented area. should be safe.

Dec 25, 2009 | Alpine MRP-F240 Car Audio Amplifier

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When I hook my JL W7 sub to my alpine mrd m1005 amp the sub is pushed out and stays that way

Hello christensen7,

It sounds like there's DC current on the amp output terminals. Disconnect the sub and test the output with a multimeter. If there's DC there, most likely the amp is shorted internally and needs repair.

Hope this helps.

Aug 17, 2009 | Alpine MRD-M1005 Car Audio Amplifier

1 Answer

When I hook my JL W7 sub to my alpine mrd m1005

You need to have the amp bench tested at a car audio shop. Sounds like a dead short in the amp. Try turning the crossover on the sub "off" and connect any other speaker to it. if you have the same outcome, your amp needs serviced. Post a comment with your results and if I can think of anything else you could try beyond that I will. Hope this helps

Aug 17, 2009 | Car Amplifiers

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Amp keeps shutting off

you dont have it bridged right your dropping your ohms down way to low.. when you go to bridge your amp you have a negative and a positive on your amp thats it i have an alpine v-power mrp-m350 i think there identical should be but anyways you have to buy a Y splitter there RCA JACKS its has the 2 ends that plug into your amp than ties into a single one its a male or female adapter the place were your gonna get it w know the trick of these amps when bridging is only keep your left channel cable plugged in to your cd player i think its white colored dont plug the other one in rap tape around it or get a rubber cap and put over it.. run your RCA cables to your location of amp location and do the same just tie that into your left channel and tape or get a rubber cap to put over the other one i wish i could draw you a diagram of it hard to explain when typing it if you have a cell phone or house phone i would prefer you calling me from a cell so i dont get charged a fortune my cell number is 1814-594-2667 call me i will get it working for yeah hope to hear from you soon my name is Brad

Jan 07, 2009 | Alpine MRP-M350 Car Audio Amplifier

2 Answers

Alpine MRD-M1005 Subwoofer Amp Problem

He may be right! You might try finding a new source of contact for your ground cause it may not be sufficent enough to ground to, also make sure that no wires from the back of your radio have any wires sticking out touching other interfering things that could possibly be causing the noise

Sep 14, 2008 | Alpine MRD-M1005 Car Audio Amplifier

1 Answer


I would say any decent pair of 12" or 15" (single 4 ohm voice coil) subs that can handle at least 500W rms would work. The rest is going to be based on cost, type of box, type of music, etc.

Feb 20, 2008 | Alpine MRD-M1005 500W x 1 mono subwoofer...

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Weak output from sub..

The woofer was not demagnetized.

If one signal cable is damaged, it could reduce the signal getting to the amplifier and could reduce the output.

Plug one RCA plug in at a time to confirm that both are working properly. If one is lower or not working, the cable may be defective.

If both work properly, double-check the settings on the head unit (sub-out, bass, crossover frequency...)

Oct 28, 2007 | Alpine MRP-M350 Car Audio Amplifier

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