hi,

need some help to troubleshoot my problem.

this only happened recently.

my front speakers are having problems, specifically the passenger side. but I suspect the problem lies in my amp.

when i turn on the radio, the music will play for 5 seconds or so and then the front, passenger, mid-bass speaker (in the door panel) begins moving in and out and the sound has a rythmic chop/chop sound.

i went to my RCA inputs on the amp and tried to isolate the problem.

when I have just the driver side RCA put in, the driver side speakers sound fine and no sound is heard from the passenger side.

when I have just the passenger side RCA put in, you can hear sound coming frm the driver side speakers and the passenger side has no sound but the mid-bass speaker begins moving in/out.

i thought maybe is was a bad RCA, so i tried plugging in the passenger side RCA into the driver side. the driver side speakers sound fine. i than plugged in the driver side RCA into the passenger and the same problem occurs.

the amp was fixed about 5 months ago for blown speaker outputs. the light on the amp stays green. i am running a memphis 16-MC3004.

can the problem lie anywhere else besides the amp? speaker wire outputs appear to be normal and nothing is touching each other.

i suspect the passenger side RCA input on the amp is messed up.

any input would be appreciated.

thank you,

vinh

 

sounds like the amp is bad

 

How is the driver's side getting signal if you've just got the passenger's side plugged in?

This would indicate that something is bad.

Try swapping the left and right speaker outputs and see if the problem follows and moves to your driver's side.

It the problem swaps there's an internal issue with your amplifier.

 

Your RCA inputs assumption is correct. That sound comes directly from a bad imput side of the amp.... how it derives that cycling sound I don't know ...

best of luck on warrantying it,
jim

 

the times i have seen that symptom in a speaker is either a bad input on the amp, or bad output on the headunit

from what you describe it really sounds like the amp...

b

 

We know that its not your headunit or rca, since you swapped driver and passanger side rca's and they were good. Try swapping the driver and passanger side speaker at the amp and see if you hear the same chop/chop from the drivers speaker, if you do then your amp is bad. if you dont then there is something wrong with the passanger side speakers. Do you have a crossover at your mids on the passanger side?

 

ive always had bad luck with memphis amps. its your amp, its sounds like the internal crossovers shorted over each other but its not enough to put it into prtoection. fyi, the protection light usually only indicates a short on the speaker outputs. somthing has to seriously go wrong internally to trip it