JBL GT-X1200 12 SUBS 1200W 4-OHM SUBWOOFERS BASS SPEAKERS CAR AUDIO. Your GT-X1200 subwoofer has a single 4-ohm voice coil. Be sure toconsider your amplifiers optimum load when designing a subwoofer system. Many bridgeable 2-channel amplifiers are optimized to drive a single 4-ohm subwoofer in bridged mode. If you will use multiple subwoofers, be sure to configure them to extract all the power available your amplifier. Car Audio GTX Series 12-inch Single 4-ohm. 90 dB Mounting Depth" 6-1/16" (153mm). The item "JBL GT-X1200 12 SUBS 1200W 4-OHM SUBWOOFERS BASS SPEAKERS CAR AUDIO GX1200-NEW" is in sale since Monday, May 18, 2015. This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers". The seller is "discounts_2" and is located in Los Angeles, California. This item can be shipped to United States.