Whats better, a single voice-coil or dual voice-coil subwoofer?
Neither, or it depends on your application. In most cases, a dual voice-coil (DVC) speaker has the same power handling as a single voice-coil (SVC) speaker. The dual voice-coil format allows more flexibility for different impedance options. The choice between SVC and DVC subwoofers should be based on the number of subs to be used and the total impedance needed to maximize amplifier output.