amp'd speaker problem

[92toyotamr2 10+ year member]

Hey, I'm a new member and this is my first post in these forums. anyway, I have a 2003 ford explorer I'm running a kenwood dnx 7120 HU a Boston Acoustic GT-42 4 channel amp powering my front speakers (Boston Acooustic SL-80s) and the rear channels are bridged to power my subs (2 JLw3s) the rear speakers are factory ford speakers powered by the HU.

THE PROBLEM: about a month ago I noticed some crackling coming through my front speakers intermittently, I checked out the speakers to make sure they weren't popped- they were fine. I've been researching that, 2 weeks ago I noticed the volume was changing between the front speakers ( the left would be low and the right would be fine, then no sound in either, then both would be low) so I replaced the preamp output harness because I had a brand new one laying around for some reason and that didn't help. I also tried to test the amp but I'm rusty with a voltmeter. I tested the ohms coming from the rcas both front channels read approx 22.5 then i tested the speaker wire output the front right read approx 225.5 ohms and the left read 00.0. the sound from the left side is really faint but its there. I don't know if I tested what I needed to but it was all I could think to do, any help I could get with this would be appreciated.

Thanks for reading

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[matt_bennett05 10+ year member]

Not sure 100% if this could be a solution but. . .Are the speakers grounding out where they are mounted? (are the terminals/wires touching metal)

 

[Vossy 10+ year member]

Bad deck preouts?

 

[92toyotamr2 10+ year member]

it didn't look like they were, I soldered and shrink tubed all my connections. But now that you mention it I remembered that when I open the passenger door all they way the subwoofer makes a small pop sound

 

[92toyotamr2 10+ year member]

the rca cables still have a signal coming from them, I replaced the harness but maybe there is something going on internally, i don't know how to check that though

 

[92toyotamr2 10+ year member]

hey, I still haven't been able to get this. I spent all day tearing thru my truck to no avail. If anyone has any ideas or suggestions it would be a big help. also if anyone could tell me how to test my amp and/or hu that would help too. thanks

 

[Bullet03 10+ year member]

have u tried i different set of rca's? maybe theres a nick in one and its grounding out somewhere in the vehicle? i would also check the rca's on the amp, i've had a set come lose inside the amp causing one speaker to play and the other would play when it wanted and not always the same volume as the other when it did

 

[92toyotamr2 10+ year member]

I'll try the new rca's in the morning, do you open the amp up and look inside of it?

 

[Bullet03 10+ year member]

you can look inside the amp to see if the soldering it damaged but from the outside of the amp u should be able to wiggle the rca input to see if it moves. and it shouldnt move.

 

[92toyotamr2 10+ year member]

thanks, I'll try that