Buzzing noise in the speakers when steering - MR2 Owners Club Message Board
 
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post #1 of 3 (permalink) Old June 4th, 2019, 03:30 Thread Starter
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Buzzing noise in the speakers when steering

So I installed a new stereo system. New amps, speakers, cables, the whole nine yards.

It appears that the electric gremlins got me. When I steer, there's a buzzing noise in the speakers. It is not dependent on the engine revs and does not get louder with volume. All is installed in the front trunk where sadly it has the power steering as a pesky neighbor. How do I protect my system from the pump motor interference other than moving everything away? Where is the fuse located so I can unplug the power steering to test if it goes away? Would this indicate any issue with the power steering or is this just the normal thing with Mr2s having an electrical pump?

Thank you.
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post #2 of 3 (permalink) Old June 5th, 2019, 20:58
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What are the chances you used shielded wiring?

If you used shielded wiring, make sure the jacketing of the shielding is grounded.

If you didn’t use shielded wiring, get some thick aluminum foil and wrap everything up well, making sure to keep a path to ground. Aluminum foil isn’t the best way to shield, but it might be enough to confirm that’s the problem. At that point you can switch to shielded wiring, buy some jacketing for your current wiring, or just stick with the tinfoil hat approach.

Last edited by kshea; June 5th, 2019 at 21:15.
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post #3 of 3 (permalink) Old June 5th, 2019, 23:50 Thread Starter
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Thanks for the answer. I assume you are referring the coax cables to be shielded, not the speaker cables, right?

My headunit has a digital coax out. I use a digital coax cable to feed my digital sound processor which is also in the front trunk. The digital coax cable runs from the radio through the wall behind the dash, right along the power steering. My understanding of digital coax is that it cannot get distorted/interferred with like analog coax, am I right?

From the processor, I have 0.5meter coax cables to the amps. I used these cables. https://www.amazon.de/Black-Connect-.../dp/B00KRG6JYS
I got them from a high-end dealer who I asked for well shielded wires but I will give another set of cables I have a try.

Sorry for my ignorance, but how do you ground the jacket of the shielding?

Cheers!

Last edited by Kalergie83; June 5th, 2019 at 23:53.
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