I just got one of these it is in very good condition for it age. I see on the manual that it uses +2 and -2 on the speakons it appears the +2 is going to the negative terminal (Green wire with black strip) on the woofer from the speakon and the negative to the positive (Green wire). I'm thinking someone removed the 2241H woofer and hooked them up reverse or I guess these could be reverse polarity stock from JBL. I also have noticed at high volume boosting any signal below 50Hz on with my Ashly EQ on series bass songs only I can hear a faint rattle noise in both woofer I'm also using a Behringer EP4000 in bridge mono to drive it so I could be over powering it as it's 2400 watts RMS 4 ohm 4000 peak?