dont know if this subject has been covered before or if theres any way round it but the standard head unit in my mk1 octy vrs turns itself down when the bass kicks in or u turn it up to loud!!! please help i dnt no wot i can do other than replace it :confused:

what is the head unit?

Could be an automatic like AVLS (Automatic Volume Lowering System or variations of) which is common on personal stereo equipment, I have seen some head units that have similar, it would depend on your HU. Presumably the purpose of it in car stereos is to limit distortion or possible speaker damage. Not sure.

Does it show any other problems. i.e. Dimming of display on heavy bass/high volume, etc? It could be that if your using a stock unit and your pushing it harder than its normally meant to go, its trying to stop itself or the speakers getting damaged

its just the standard octy 1 vrs tape player head unit if that helps? :confused:

I seem to remember this happening on both my mark 1 vRS's.

If I remember correctly it is a maximum volume setting for some reason or another.

It was particularly noticable on CD's with high bass.

Can't remember if I ever got it sorted though.:confused:

i know pioneer put ALS (i think its called that) in their head units which slightly turn the unit down when you slow down. Its very odd if its turned on and you dont know what it does lol