Hi everyone im new to the SQ5 ownership and have noticed the sound actuator is not working right. fuses OK, I plug a second speaker 30w 4ohm into either side, turn on the car and get a very faint burble and hissing sound....and that's from the brand new external speaker. could it be the actuator module in the rear trunk is stuffed? also I put a multimeter on the speaker cable and I hat 1.8-2 ohm ...was I checking it right?