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Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through May 29, 2009

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Old    Sarah Shepherd (shepsigkap)      Join Date: Apr 2009       05-17-2009, 6:16 PM Reply   
I searched the board already for other threads about engine noise coming through the speakers but nothing had the twist that our issue has.

When the engine is off the stereo works wonderfully! When we turn on the engine it works fine and then as we accelerate we randomly get engine noise in the passenger side in boat speakers. If I flip the accessory, navigation, or anchor light switches the noise stops 85% of the time. The nose will come and go when we hit choppy water and at different RPM levels. When we are going slower (no wake zones) the noise is far more consistent but we don't have the sound every time we are going 5mpg.

We just installed 2 new amps (removing the old ones) new tower speakers and ran new 14gauge speaker wire to the 4 in boat speakers but not to the tweeters. Here is our set up:

Alpine PDX 5 runs 4 Alpine Type R 6.5" component speakers and 1 JL Audio sub

Kicker ZX 450.2 running the KMT 6 speaker pods on the tower

Sony head unit with iPod direct connect and 2 Sony RM-X55 wired remotes

We always listen to the iPod and that is what we were listening to today when we had the problem.

Our guess is that it is a grounding issue but we can't figure out where the grounding issue is. All of the connections are tight and we are running power and ground from the battery at 4gauge into a power distribution block with 8gauge running out of the distribution block to the amps.

Again the engine noise is only in the passenger side in-boat speakers and it is intermittent.

It's really hard to diagnose the problem here at the house since the engine is not running.

PLEASE HELP!

(Message edited by shepsigkap on May 17, 2009)
Old    Tanner Russell (tanner)      Join Date: Oct 2005       05-17-2009, 8:14 PM Reply   
Does your stereo have an independant battery set-up for itself or are is it sharing a battery w/ other stuff from your boat?

Make sure your power and ground are isolated away from your signal wires, as best as possible! You don't want them running side by side.
Old    Sarah Shepherd (shepsigkap)      Join Date: Apr 2009       05-17-2009, 9:07 PM Reply   
We have 2 batteries and a Perko switch but the stereo is wired directly to the Optimia Blue Top and that is set as battery 2 and when we run just the stereo with the engine off we run it on just 2 but when we're driving we have the Perko switch set to both in order to recharge both batteries. The problem is only when the engine is running (Perko switch set to both)

The signal wires all run to the driver side and all of the stereo equipment (other than the batteries) is on the passenger side. The batteries are in front of the dash set up and the power and ground for the stereo don't come anywhere near signal wires.

As far as the power and ground for the dash they are separated as much as possible . . . used boat with too many wires that previous owners just cut and spliced but that is only on the dash/driver's side.
Old    Phil White (philwsailz)      Join Date: Feb 2009       05-18-2009, 7:38 AM Reply   
Sarah-

You have mail...

Phil
Kicker

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