bass cuts out randomly..HELP!

[Civic96Lx 10+ year member]

i have an Alpine mrd m605 and just within the last 2 weeks or so, the bass has been cutting in and out when driving around.. the amp stays on the entire time and acts as if everything is fine.. no current overload or imediance checks.. I have replaced the RCA's a couple times and it may have helped, but the problem still occurs.. im thinkin it has to do with something on the ciruit boards or even with the rca posts on the amp.. it seems that when i hit a bump or turn sharply that it will happen, on or off.. my amps are screwed down and do not slid around.. anyone know whats up??

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[shaneb 10+ year member]

Same thing happens to me, loose rcas jack.

Or it could just be your ground or something.

You have to isolate the problem.

 

[undeadxsunshine 10+ year member]

Well to test whether it's the amp or HU, plug in an ipod with an RCA to mini rca to the amp and play music off that, then see if it still cuts out.

 

[Civic96Lx 10+ year member]

Same thing happens to me, loose rcas jack.Or it could just be your ground or something.

You have to isolate the problem.

was that from the inside of your amp? or just the cables?

 

[Civic96Lx 10+ year member]

Well to test whether it's the amp or HU, plug in an ipod with an RCA to mini rca to the amp and play music off that, then see if it still cuts out.

do you mean rca to mini jack to plug in the ipod to the amp? ill check that out

 

[cleansoundzz 10+ year member]

Look at the gains or the amp may be faulty.

 

[05fronty 5,000+ posts]

check your ground

 

[Civic96Lx 10+ year member]

Look at the gains or the amp may be faulty.

amp has been runnin great for the last year or so..

 

[Civic96Lx 10+ year member]

any sort of bump or sharp turn in my car the bass will cut out.. if it were the ground wouldnt the amp turn off?.. cuz it doesnt at all..

 

[paoli22000 10+ year member]

my mrv1507 did the same thing it was the rca input in the amp. Grab the rca's going into the amp and give a small jiggle see if this makes the bass cutout.

 

[Civic96Lx 10+ year member]

i can tell that its loose, but when i jiggle it, it doesnt really do anything.. anything i can do about it?

 

[Civic96Lx 10+ year member]

bump

 

[Civic96Lx 10+ year member]

bump

 

[Civic96Lx 10+ year member]

any way i can open up my amp and reconnect something with the rca posts??

 

[gunz4me 10+ year member]

About the only thing you will be able to do is see if your solder joints broke or worked themselves loose where the RCAs connect to the circuit board. If you are handy with a soldering iron and/or comfortable with disassembling your amp you can give it a shot.

If it is something else, I feel for you because I can't standing working with those microscopic components on Alpine amps (or any amp for that matter).