I've recently added a cd43 to my e30 vert, and to that an aftermarket 4 channel amp (jl a4300). Luke suggested the best way to hook the cd43 up to the amp was to wire rca cables to the headunit (i.e. positve to (+) for each channel and negative to common ground for all 4 channels instead of to (-) for each channel) and then run the rca's to the amp. This amp has input voltage ratings upto 8V and the cd43 puts out around 6V per channel.
So, it's all hooked up and the result is good- except for a very high pitched tone coming out of the speakers when the headunit is on. This tone is in the background and is not volume dependent. This also happens when the engine is not running- so that's not it...
I ran my audio and power cables down different sides of the car, so I don't suspect interference that way, but I ran cheap-o rca cables... could that be it? I even tried a different amp with the same result, so that is ruled out..
Anyone guess what the problem is and what a solution would be? Thanks..
So, it's all hooked up and the result is good- except for a very high pitched tone coming out of the speakers when the headunit is on. This tone is in the background and is not volume dependent. This also happens when the engine is not running- so that's not it...
I ran my audio and power cables down different sides of the car, so I don't suspect interference that way, but I ran cheap-o rca cables... could that be it? I even tried a different amp with the same result, so that is ruled out..
Anyone guess what the problem is and what a solution would be? Thanks..
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