I recently had an amp and speakers installed. I am getting a lot of static and engine/alternator whine.

Details:

2003 G35c Bose w/Navi
Stock HU
Infinity Kappa - Front Doors
Infinity Kappa - Rear Deck
Soundstream STL4.320 amp
Scosche SLC4 Four-channel line output converter

After some research on here it seems I may need a differentially balanced LOC.

A few people suggested the Rockford Fosgate (RF-BLD) Balanced Line Driver as the solution to my problem. Can anyone confirm before I order?

 

or would this be a better option.

http://www.reqsound.com/support_specs.aspx

 

http://www.termpro.com/articles/noise.html

I followed the steps in the Alternator whine section and was able to narrow the alternator whine issue to the head unit, most likely the ground. I am getting it fixed tomorrow.

Edit: this is for alternator whine in general, as I'm not familiar with any specific alternator whine issues coming from a stock HU/navi setup for the G.

 

Yeah gl, sounds like maybe grounding issue.

 

Ground is good according to installer. Anyone else?

 

Bose is known to have issue with some amps, get one of the balanced LOCs or a different amp, or, even better, a new headunit.

 

Thanks I ordered the Rockford LOCs. I really don't want a head unit because I just don't see myself using all the great features they comes with so I feel it would be a waste.