Question about Alpine MRV-T757 Car Audio Amplifier

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Blinking protection light on mrv-t757 amp

I have a mrv-t757 alpine amp with a 12 kicker cvr comp 2 ohm sub. The red protection light flashes. my sub isn't hitting very hard and sounds like ****. when i turn my music up my sup keeps vibrating and it wont stop till i turn my hu off. any ideas what could be wrong?

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  • 807 Answers

Could be the power supply or output stage electrolytic capacitors.
Possibly breaking down/drying out inside.

Posted on Mar 17, 2008

  • ncarlson187 Jan 24, 2012

    How to fix and how can you tell what part its damaged?

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1 Answer

AMP IN PROTECT MODE


have you tried removing the power from your amp, there are several reason to put an amp in protection mode, its usually due to incorrect wiring. ohms law???

Sep 11, 2010 | Alpine MRV-T757 Car Audio Amplifier

1 Answer

Zx-8100 amplifier is red lighting.


try wiring them differently. here is a link for u to go to http://www.crutchfield.com/learn/learningcenter/car/subwoofers_wiring.html . once there find your amp configuration (ie. mono, or 2 channel) then down to the type of subs an how many subs ( ie. 2 dvc (dual voice coil) 4 ohm subs) an that will show u how the subs should be wired and wired to the amp.

Mar 21, 2010 | Volfenhag ZX-8100 Car Audio Amplifier

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Red protection light on when power,d up from battrie is this normal


check the connector at the amp and make sure the wires aint touching also check ur speaker wire are rigged up right... do not run 2 subs off 1 channel as it will pop fuses and the procet light will come on

Oct 21, 2009 | Alpine MRV-T757 Car Audio Amplifier

1 Answer

How do i run it 2 ohm stable


This is how 2 type r's are wired to one amp at 2ohms hope this helps dont forget to rate me thanks

Upfront Audio :)

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Apr 06, 2009 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Over heating problem


"how do i made amp ohm instead of 4"
What?
I think you're asking how to make the amp 2 ohm. If your 12's are already wired for 2 ohm, just connect the 2 leads to the bridged terminals on the amp. There will be 4 connections on the amp. One for each channel. Usually, the two outside terminals (one positive and one negative) are the bridge and it'll be noted with a line painted on the surface above the terminals. That's all you have to do.
If it is overheating, you should put cooling fans on it.

Aug 31, 2008 | Alpine MRV-T707 Car Audio Amplifier

1 Answer

MRV - 1507 Question ...


The MRV-1507 is a two channel amplifier, below I've pasted important info from the manual:

Battery Lead (Sold Separately)
Be sure to add a 80 amp fuse as close as possible
to the battery’s positive (+) terminal. This fuse will
protect your vehicle’s electrical system in case of a
short circuit. If you need to extend this lead, the wire
gauge should be AWG8 or larger.
MRV-1507 ... 80A amp fuse

Power Output: RMS Continuous Power (at 12.0V, 20 Hz to 20
kHz)
MRV-1507
Per channel into 4 ohms ......................... 150W, 0.08% THD
Per channel into 2 ohms .......................... 300W, 0.3% THD
Bridged into 4 ohms ................................ 600W, 0.3% THD

You can find a manual for this amp here:
http://www.alpine-usa.com/US-en/support/support_search.php?modelname=mrv-1507

Jul 07, 2008 | Alpine MRV-1507 Car Audio Amplifier

3 Answers

Is there a reset for the mrv-t757


There are little black things like with 3 wires running off them.. open it up and you will see what ime talking about there black when there bad somtimes the wire burns off u can check the model number on em and solder new ones in thats whta i had to do to mine and it works like a charm now.. i had a hard time finding the number on the burn ones because it blacked it out. so i checked other ones for model number and wala..

Nov 07, 2007 | Alpine MRV-T757 Car Audio Amplifier

1 Answer

Alpine mrv-t757


Hi Big Nick,

 

Sounds like you have got almost all the good out of those Subs. You can find the screws you need at almost any hardware store or Auto parts store. The light is becase you are dloading the amp with low OHMS.  You may need use one channel and Run the wiring like written blow to get the power problem to disappear.

 

S1+ = Kicker comp cvr sub coil 1 positive

A+ = Amplifier Positive output.

 

 

A+ to S1+

S1- to S2+

S2- to A- 

Oct 18, 2007 | Alpine MRV-T757 Car Audio Amplifier

1 Answer

Power Protection Circuit (SORT) Engaged


Umm a ohm meter would help you here. Double check the wires from the sub to the amp...make sure its not shorting out. Try starting the amp without the wires on the terminals...if the protection shows up then there is a short inside the unit and it will need to be replaced/repaired.

Feb 17, 2007 | Kicker ZX400.1 Car Audio Amplifier

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