Question about Alpine MRV-T707 Car Audio Amplifier

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Whats the problem?

I got a mrv-t707 amp hooked up to two 12 " royal golds xenons, but it is not workin very well. my two subs sounds like my old 10 " sub that i had.. what could be the problem????

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5 Suggested Answers

  • 9 Answers

SOURCE: one hits harder then other

Check the Polarity on the subs, you might have to invert one. Best way i know of to test is get a BASS CD -=download a bass test cd...legally of course=- and check for a test that will just flutter the speakers in and out and see if they both go in and out in the same way, if one is in and the other is out that could be your problem

Posted on Feb 17, 2007

Cerfer39
  • 709 Answers

SOURCE: 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- 

Posted on Oct 23, 2007

hawkwatcher
  • 67 Answers

SOURCE: sr7200 LFE (sub woofer) output stopped working

Chances are if The Receiver only has sound in Stereo Direct Mode and all surround modes and Sub out are Inop the DSP (Digital Signal Processing) Card is most likey defective. These boards are not available from marantz (D&M Holdings) and must be Component level repaired which usually is not cheap. If Only the Sub out is not working check setup to be sure sub woofer is set for on. Also If On Screen setup menu does not appear on video monitor Unit may need to be Reset manually which entails discharging a Capaitor on main P.C.B Contact kstahl65@att.net for details

Posted on Jan 10, 2008

StuartB
  • 807 Answers

SOURCE: blinking protection light on mrv-t757 amp

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

Posted on Mar 17, 2008

tech48
  • 624 Answers

SOURCE: Phoenix Gold Xenon 1200 mono not pushing subs and making noise.

This sounds like a problem with the head unit output to the sub amp. Are you using a Pioneer head unit? If so, you may have a problem with some surface mounted fuses inside the radio on the main board. Certain Pioneer head units have a common problem with these fuses blowing. They are fuses for the ground on the RCA outputs.

Let me know if this is the case, and if it is I can give you the part number of these fuses and tell you where they are located, but you would need good soldering skills to replace them. Also let me know what model number your head unit is.

Thanks,

Dave

Posted on Sep 08, 2008

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1 Answer

No sound from subs


You need power to the amp. If the light on the amp is not on then your amp is the problem. Get power to it.

Nov 10, 2013 | Phoenix Gold Xenon-400.1 Car Audio...

1 Answer

Ok, I have a pair of infinity dual voice coil 12" subs, and a pair of audiobahn quad voice coil 12" subs. Boths sets of speakers can handle 450w. Which set of 12's would be best to hook up to this amp, and...


i recomend you just use the best single woofer in a well built box and that will give you better sound at lower gain volumes it sounds like you have too much junk laying around but to get good bass run your sub at 2 ohms if the amp is stable at that impedence

Dec 16, 2008 | Phoenix Gold Xenon-200.4 Car Audio...

1 Answer

Phoenix Gold Xenon 1200 mono not pushing subs and making noise.


This sounds like a problem with the head unit output to the sub amp. Are you using a Pioneer head unit? If so, you may have a problem with some surface mounted fuses inside the radio on the main board. Certain Pioneer head units have a common problem with these fuses blowing. They are fuses for the ground on the RCA outputs.

Let me know if this is the case, and if it is I can give you the part number of these fuses and tell you where they are located, but you would need good soldering skills to replace them. Also let me know what model number your head unit is.

Thanks,

Dave

Sep 08, 2008 | Car Audio & Video

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

Blinking protection light on mrv-t757 amp


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

Mar 17, 2008 | 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

Alpine MRV-T707 Car Audio Amplifier No Sound


disconnect all power (15min) try again with different speaker to see if sub is dammage.

Aug 22, 2007 | Alpine MRV-T707 Car Audio Amplifier

1 Answer

No sound and some smoke


If you got smoke comming out its already has damage my friend.. Was this unit bench tested before you bought it or was it hooked up in another vehicle and you seen it work or did you buy it sight unheard??

Mar 23, 2006 | Alpine MRV-T707 Car Audio Amplifier

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