Both work equally well. The only reason for dual voice coils is for different wiring options with the same sub. So as long as you get the impedence load(s) your amplifier(s) require(s) you will be set. It doesn't matter if they are svc's or dvc's //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif