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My rear speakers get interference from the throttle?

I have a mk2 furio 1.4, recently changed out all the speakers new head unit and amped the rear speakers. now for some reason the rear speakers get feedback which seems to range in frequency when i use the throttle.
Weird i know,

i have a jbl 400w amp powering 2 13cm 240w vibes and well there arent nearly as impressive as they should be.

i have had a look at my wiring and i used the grommet on the drivers side behind the pedals for the power lead this seemed to be to be the only available place to run the power lead? anyone else use a different one?
This is also where i think the problem is but i have no idea have to fix it. all the connectors are crimped properly and its grounded on a rear seat bolt.

Any and all ideas/views are welcome.

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It is the ground mate, i had the same problem in my car, seat rails or things similar aren't that good for grounds. Best thing to do is find somewhere to bolt it right into the chassis. Hope this helps.

Posted on Jan 22, 2009

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Hello, I have a 2000 VW passat with a Monsoon radio system. How do you install a new head unit and speakers while maintaining the factory amp? If this is impossible, Can I use the current speaker wires...


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While it's not impossible to install a new head unit and speakers and leave the factory amp, it'll be a real bear of an install.
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Check out www.bestkits.com for the appropriate adapters and wiring harness for Monsoon equipped vehicles. Just enter your vehicle info and it should bring up the required adapters and harnesses to make everything work properly.
There are three ways to connect more than one speaker to a single channel: 1) Parallel - both speaker +'s and -'s wired together - load impedance will be halved (2 4-ohm speakers in parallel equal a 2-ohm load). 2) Series - The + of one speaker wired to the - on the other speaker and the remaining + and - going to the channel output - load impedance will be doubled (2 4-ohm speakers wired in series equal an 8-ohm load). 3) Using a crossover - connect the bass speaker (woofer) and the input of a high-pass filter directly to the channel output and the treble (tweeter) speaker to the output side of the filter. In any of these connections, you want to make sure that the load (ohms) your amp "sees" is not less than it is rated for. Most amps will work into a 4-ohm or a 2-ohm load with no problems. Going below 2-ohms is bad, because it will cause the amp to overheat and possible fail. Going above 4-ohms is no problem for the amp, but it won't produce as much power (watts) at the higher impedance and your speakers will not be as loud as they could be.
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maybe the speaker is bad

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If the same speaker is still not working, the problem will be the speaker, you will have no other options left since you changed amplifiers and checked all wiring.

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