Filters That Work
2007 Subaru Impreza WRX
Crutchfield Customer Review (What's this?)
I had tried running a 00 cable from the amp to the battery, shielded RCA cables, Power on drivers side, RCA cables on the passenger side and nothing got rid of the alternator whine and the popping when turning off the car/stereo. These filters got rid of the noise! I'm thrilled!
Pros: They work. Small. Easy to install. Cheap, especially considering the time I had already spent. 1.3dB of gain.