Recent content by katalepsis74

I confirmed it's what's coined "bass roll off" which is designed to protect the speakers but is far, far too aggressive in fulfilling its task to the point it's nigh broken. The key is indeed replacing the amplifier which I am going to do, as well as all the factory speakers with Bose units even...

I think you might be right, I sense the volume chop is related to power detection. I wonder if upgrading the speakers would help without replacing the head unit but that would rely on the head unit sensing more robust speakers capable of handling the detected volume.

Greetings all, just joined after acquiring a cherry 2009 Z4 (3.0 Sport edition, black 6-speed hard top convertible with red leather interior and only 44k miles on her). My issue is extremely annoying and I've already done extensive research. Regardless of if I'm sitting at a light, accelerating...