If your ZVOX model has a subwoofer output jack on the rear panel, you can connect that to a powered subwoofer. The powered subwoofer would need to have an internal crossover selector, also called a low-pass filter, for filtering out the mid and high frequencies. This is because the subwoofer output jack on the ZVOX is a full range monaural audio output.
If you have any questions please email us at info@zvoxaudio.com