dflillemae 10+ year member
Junior Member
Hello,
I just bought a pair of new speakers (GAS Silver GS620P) and amplifier (Blaupunkt GTA4). After installing the speakers and amp to the rear deck i tested them out and i got some loud crackling noise whenever i turn the volume up to about 50% on the HU (kenwood kdc-w3041). The front door speakers are powered straight from the HU and work fine at all volume levels.
I have grounded the amplifier to a metal part on the driver side of the vehicle. My sub amp is grounded to the passenger side. The subwoofer has been running without any problems tho.
Also, i am running the 2 amplifiers from 1 set of RCA outputs, using 'Y' cables. Disconnecting the subwoofer amps RCA-s and only using the GTA4-s did not change the situation.
It seems like the problem seems to randomly go away. As driving around, i could occasionally turn the volume up pretty high without any problems and 5 minutes later the noise would come back.
There also seems to be an issue with ground loop as the new rear deck speakers make a sound that changes it's pitch with RPM of the car. Do you think that could be causing this problem? How can i fix that? I'm running rca-s and power cables from the opposite side of the vehicle, amps are grounded to a clean metal surface.
I tried running the speakers straight from my HU and bypassing the GTA4 amp and they worked fine.
Any assistance would be appreciated.
Feel free to ask more details if necessary .
David
I just bought a pair of new speakers (GAS Silver GS620P) and amplifier (Blaupunkt GTA4). After installing the speakers and amp to the rear deck i tested them out and i got some loud crackling noise whenever i turn the volume up to about 50% on the HU (kenwood kdc-w3041). The front door speakers are powered straight from the HU and work fine at all volume levels.
I have grounded the amplifier to a metal part on the driver side of the vehicle. My sub amp is grounded to the passenger side. The subwoofer has been running without any problems tho.
Also, i am running the 2 amplifiers from 1 set of RCA outputs, using 'Y' cables. Disconnecting the subwoofer amps RCA-s and only using the GTA4-s did not change the situation.
It seems like the problem seems to randomly go away. As driving around, i could occasionally turn the volume up pretty high without any problems and 5 minutes later the noise would come back.
There also seems to be an issue with ground loop as the new rear deck speakers make a sound that changes it's pitch with RPM of the car. Do you think that could be causing this problem? How can i fix that? I'm running rca-s and power cables from the opposite side of the vehicle, amps are grounded to a clean metal surface.
I tried running the speakers straight from my HU and bypassing the GTA4 amp and they worked fine.
Any assistance would be appreciated.
Feel free to ask more details if necessary .
David