Moin, moin! Quick questions: Have I built up the AS2 (in the 93er five-door) with non-Saab components. Smaller power amplifier at the front (in the middle console) for a 16er compo system at the front. Last time I installed another power amplifier at the rear for new 6x9er in the existing recordings. Since then I have a speed-dependent buzz and noise in the sound image. a) Can this be due to the fact that I have installed chinch and power cables (dumbly) directly next to each other on the passenger side? b) If j a, do the noises also radiate into the front channels (e.g. via the radio)? Does the noise now also sound in the front. c) When I turn off the radio, is there a dull (strange) noise over the rear channels?? Can this be because I have caught a bad mass point?? I have already thought that if I put the chinch cable on the driver’s side, I pull a mass cable right up to the Baterie, then the mass is in any case very clean… Maybe yes also someone a tip for a very good mass point near the back seat??? Did you ever have similar problems, someone knows each other? Thank you for the tips in advance.