Need Help

[a216vcti]

Sorry for the cross post. I posted this in the General Discussion. Should have been posted here.

So, I recently installed a MTX 942 and 12" JL W7. I have a 2003 VW Jetta GLi with the monsoon premium 6 stereo. I used a SOEM-T LOC for signal. I grabbed signal behind the radio.

The problem is that everytime I turn the volume high and the bass hits hard, the factory speakers start to distort and have a lot of static. I unplug the RCA wires from the LOC, killing the amp and sub and the distortion/static goes away. When there isn't heavy bass, it seems like it's playing fine.

Here's the wires I tapped into behind the radio:

RF+ - Green

RF- - Black

RR+ - Orange

RR- - Black

So far, I've ruled out the RCA wires. I orignally though that the RCA wires were pinched somewhere, so I ran a second set and the problem still persisted. So it's not that. I put the wires in one by one and it seems like the problem is still there no matter which channel I use. Im starting to think maybe the monsoon amp is running out of amperage when the bass hits because the monsoon system works fine when the RCA wires are both unplugged but when the RCA wires are plugged in; I get the static.

Anyone know where to go from here?

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[mylows10 5,000+ posts]

find the main power wire going to the monsoon amp and check to what the voltage is when your playing the heavy bass notes thru the other amp.maybe the mtx amp is drawing too much power

 

[keep_hope_alive Premium Member]

Maybe you don't put the loc between the HU and Monsoon amp, you put it after the Monsoon amp. You may be messing with the factory signal.

2003 Volkswagen Jetta Car Stereo Wiring Schematic for Monsoon Audio

2003 Volkswagen Jetta Car Stereo Wiring Schematic for Monsoon Audio

Car Radio Battery Constant 12v+ Wire: Plug #3, Pin #7

Car Radio Accessory Switched 12v+ Wire: Plug #3, Pin #4

Car Radio Ground Wire: Plug #3, Pin #8

Car Radio Illumination Wire: Plug #3, Pin #6

Car Stereo Dimmer Wire: N/A

Car Stereo Antenna Trigger Wire: N/A

Car Stereo Amp Trigger Wire: N/A

Car Stereo Amplifier Location: N/A

Car Audio Front Speakers Size: N/A

Car Audio Front Speakers Location: N/A

Left Front Speaker Positive Wire (+): Plug #2, Pin #5

Left Front Speaker Negative Wire (-): Plug #2, Pin #6

Right Front Speaker Positive Wire (+): Plug #2, Pin #3

Right Front Speaker Negative Wire (-): Plug #2, Pin #4

Car Audio Rear Speakers Size: N/A

Car Audio Rear Speakers Location: N/A

Left Rear Speaker Positive Wire (+): Plug #2, Pin #7

Left Rear Speaker Negative Wire (-): Plug #2, Pin #8

Right Rear Speaker Positive Wire (+): Plug #2, Pin #1

Right Rear Speaker Negative Wire (-): Plug #2, Pin #2

Signal for Anti-Theft Alarm System Wire: Plug #3, Pin #1

Data Link Connector (DLC) K-Wire: Plug #3, Pin #3

Battery Supply Constant 12v+ Wire for Anti-Theft System (SAFE): Plug #3, Pin #5

CD Changer Data In Wire: Plug #1, Pin #13

CD Changer Data Out Wire: Plug #1, Pin #14

CD Changer Clock Wire: Plug #1, Pin #15

CD Changer Constant Battery 12v+ Wire: Plug #1, Pin #16

CD Changer Control Signal Wire: Plug #1, Pin #17

CD Changer Ground Wire: Plug #1, Pin #18

CD Changer Left Line Out Wire: Plug #1, Pin #19

CD Changer Right Line Out Wire: Plug #1, Pin #20

 

[a216vcti]

I said screw it and bought a kenwood kdc-X996. If I still have the problem, then it'll be easy to fix the problem. hopefully not too expensive.

 

[keep_hope_alive Premium Member]

good idea.