i got a 15" Alpha new and its be doing it when i got it i thought it was the box cuz the sub did not sit flat so i saend that down tonight still did it i turnd the lpf down and it like kinda stop it sounded so goooood went for a test drive and stop some were and was doing it again. go home to a quick free air and it still did it????? i'm so lost this has never happen to me!
1 15" Alpha v2 2dvc 1 1750 4.5 cubes @ 32Hz by woodlawn big3 1/0 yellow top it the back 1/0 front to back Alpine IVA-W205 hu using a ipod
