Find great deals for Alpine MRD-M 1-Channel Car Amp. Shop with confidence on eBay!. Alpine MRD-M V12 Series • W RMS x 1 channel at 2 ohms • W x 1 channel at 4 ohms • Bass Engine with low-pass filter subsonic filter parametric EQ. Alpine V12 AccuClass-D MRD-M – car – amplifier overview and full product specs on CNET.

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Alpine MRD-M 1-Channel Car Amp | eBay

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Go to mode 9 and ENT and make sure it is off. If it still dont work you proabably have bad RCA wre or speaker wire. Does the amp power up? Amp being underpowered doesn’t make any sense, unless he means that the wire was of too light a wlpine to supply the amps demand, but typically that will cause overheating and the amp will click jrd-m300.

Now over driving the amp can burn out the coils in the sub.

Alpine MRD-M300 Car Amplifier

Check your subs by tapping a battery on the wire going to them and see if they move and make a pop, if so you are good. Rmd-m300 ahead and check connections, fuses, subs and let me know what you alplne then we will attack the exact problem. Let me know how it works out, Thanks! PS If I had a nickel for every bad ground I had to fix from shops around here I would make slightly more money every month!

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Also make sure that the input gain and other controls are set properly. If there’s still no sound, the amp itself is probably defective. I have the “” message. Check that you have the correct fuse on your power cable. If it is allowing too much current, the protection feature of the amp will kick in. Similarly if the resistance is too high, there will not be enough current to power the amplifier.

Try increasing the gain slightly on the amplifier not too much or you will blow something. This will mean that you don’t have to turn the head unit volume too high to get a loud output.

Also, an amp may draw excessive current when operated into a lower impedance load than it can handle. Too low of a supply voltage may result in the amp drawing excessive current, especially when operated at or near it’s rated output.

Alpine MRD-M Product Ratings And Reviews at

Voltage multiplied by the current equals watts. So if the amp is trying to produce X number of watts, the lower the voltage, the more current it needs. A power wire that is too small or too long may have too high of a voltage drop. A high resistance in the ground connection can also result in a significant voltage drop.

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Again, too small, too long, loosely fastened, or perhaps corroded. I’d check all wiring Internal component failure can also cause excessive current draw.

In that case, the amp needs service. The output disable mode is turned on. Refer to the instructions at?

Alpine MRD-M300 1-Channel Car Amp

Hook it up and hear what good bass can sound like! Check that the amp is not in “safe mode”.

Press the MODE button. Press the ENT button.

If this does not work, either the input from the head unit, the subwoofer sor the amp itself is probably defective. Is the speaker the correct alppine for the amplifier? Have you confirmed there are no short circuits in the wiring? If you don’t have an aplpine sub, then look at the specs and find a similar one. You may be trying to load the amp too heavily and it will protect itself.

Or maybe the issue is not your amp at all it could be the subs you are running and the type of alpne. Not all boxes are intended for all applications.

Find and eliminate the cause of the excessive current, then turn the power off then back on from the mrd-,300 control unit. Not finding what you are looking for? Ask a Question Usually answered in minutes! Jaime Hernandez Level 3 Expert Answers. Jeffrey Turcotte Level 3 Expert Answers.

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