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Schematics? Where do I find Schematics for Alpine mrvt707, Alpine mrd-m301 and Kenwood KAC646?

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Re: Schematics?

This site has the T707 manual available.

Pacparts has the manual for the 301.


Posted on Dec 21, 2007

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Hello diana_soto55,

The MRD-M301 is a discontinued model but originally sold for around $250-300. A more powerful current model is the MRP-M500 that sells for around $200 and under at discounted online stores.

Hope this helps.

Oct 02, 2009 | Alpine MRD-M301 Car Audio Amplifier

1 Answer

How much

Jul 31, 2009 | Alpine MRD-M301 Car Audio Amplifier

1 Answer

Need help

No, needs repair..Contact ALPINE ELECTRONICS OF AMERICA, INC. 19145 Gramercy Place, Torrance, California 90501, U.S.A. Phone 1-800-ALPINE-1 (1-800-257-4631)

Apr 07, 2009 | Alpine MRD-M301 Car Audio Amplifier

2 Answers

Amp displays the letters curr

have you disconnected all inputs and outputs on amp and retried starting it power only? if so your amp has an internal solder bridge and must be repaired by authorized repair center. Repair it or replace it at wholesale price from

Jan 31, 2009 | Alpine MRD-M301 Car Audio Amplifier

2 Answers

Alpine MRD-M301

you could have a bad ground or the power wire could have a short i would start there

Jun 25, 2008 | Alpine MRD-M301 Car Audio Amplifier

2 Answers

Alpine MRD M301 just flashes

disconnect all inputs and outputs then restart it if problem persists you have a internal solder bridge youll need to have it repaired by authorized repair shop or buy a new amp at wholesale from this site:

Mar 11, 2008 | Alpine MRD-M301 Car Audio Amplifier

2 Answers


Try or go to the Kenwood web site and look in the support section.

Dec 18, 2007 | Kenwood KAC-848 Car Audio Amplifier

1 Answer

Powers up but no signal

Check your gain pots as well as audio pre outs on amp. sometimes pre outs will get loose and be unable to make a connection.

Jun 19, 2007 | Alpine MRD-M301 Car Audio Amplifier

1 Answer

Correct settings

I am not familiar with your amp, but any amplifier performs best when the output stage effective resistance exactly matches the load resistance. So, read your 15" subs and find out number of ohms, then set the amp to that number. according to your amp's specs: if you have 2 ohm speakers, you can draw 350 watts from your amp. so purchase 2 ohm speakers

May 31, 2007 | Alpine MRD-M301 Car Audio Amplifier

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