static speakers after 2 amp install

[Matt 9 10+ year member]

i'm having problems with my new install. one amp is a mono block for the sub. (working fine) my other amp is a 2 channel amp powering the fronts until i can afford a 4 channel to do all of them. my sub works. my fronts are full of static and if i try to close the trunk, a loud buzzing noise goes thru the speakers. should i re ground the amp for the fronts ? or should i try to swap the rca's out for a better pair ? i ran new wires from the doors all the way back. so i'm confident that my speaker wires are fine. any help would be great thanks.

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[Matt 9 10+ year member]

bump, still need help. i will elaborate more. i tried different ground techniques and no luck. front speakers are still real distorted at low volume. i'm wondering if i need to disconnect the factory speaker wires at the head unit since they are not connected to anything except the head unit. i dont understand why my sub works with the monoblock, and the fronts will not work with my 2 channel. i tried swapping rca's from the sub amp to the 2 channel and the same distortion happens. maybe the amp is toast ?

 

[DonH 5,000+ posts]

what amplifier is the one in question? make and model. also what "techniques" did you try for connecting to ground?

 

[Matt 9 10+ year member]

the 2 channel is a MA Audio 289i M289i, Discontinued M289i, Discontinued Discontinued, Discontinued 2 Channel Amplifers i use to use it for my sub and had it bridged with no issues. i tried re grounding to different spots and removing any paint on the metal. i wonder if i could connect the ground on the MA Audio amp to the ground on the JL amp since the JL seems to be working fine ?

 

[Matt 9 10+ year member]

fixed my problem, my 2 channel MA Audio was the issue all along. swapped it out with some crappy old jensen and my front speakers now work again with no noise. i guess after running my old amp bridged for 4 or 5 years, it finally decided not to work in 2 channel mode. time for another upgrade. lol