The Paradigm PS-1000 woofer has a bandpass design, incorporating a 250-watt amplifier powering a 10-inch driver. The output of the woofer is transmitted through three tuned ports along the back panel of the woofer next to the amplifier. If you are having trouble with the PS-1000, you can take steps to fix the problem. Tips Writer Bio

How to Troubleshoot a Paradigm PS 1000 - 18