When I turn left about 90 degrees or so on a banked corner the front speakers cut out, and with a jerk of the steering wheel they come back on again... ive got the pioneer upgrade speakers and 2 sony subs in the boot... the radio is a Pioneer DEH-50UB. The subs stay working as normal when this problem occurs.
The only thing I can think of is a wire touching metal somewhere but I can't seem to find it...
Also I think it is behind the radio because when I pull out the radio and move the wires about the problem increases/decreases depending on where the wires end up.
This all started just before I changed the front speakers so it wasn't when I fitted them either.
I can't find a solution to this anywhere, be it the internet or the vast amount of car audio shops I've been to... they all look at me like I'm some kind of bomb that will go off at any moment

Any help would be greatly appreciated as this is driving me insane

Thanks,
Jon