Horrible buzzing in rear shelf when I play heavy bass
I bought a FIIO Alpen 2 headphone amp and I'm using it with the w211 aux cable my car came with. Huge improvement in sound, however, I have a problem where that rear sub I'm assuming is making a loud buzz rattle sound on that shelf in the rear. I sat in the back to hear what's going on and put my hand pressing on the shelf but the rattle didn't go away.
Has anybody had this problem before?
The factory eq curve varies by volume level. When you turn up the volume, the amount of bass is reduced. That is why it sounds better with the headphone amp. So basically you're overdriving the woofer with too much bass eq. This is compounded if you are using any bass boost on your phone.


The factory eq curve varies by volume level. When you turn up the volume, the amount of bass is reduced. That is why it sounds better with the headphone amp. So basically you're overdriving the woofer with too much bass eq. This is compounded if you are using any bass boost on your phone.


