Whats the difference between the two except the dual with two pos. and neg. terminals? Which one is better?

 

Dual voice coils have 2 voice coils as opposed to single voice coils which have only 1... obviously.
The most important thing to remember is that DVC subs have more flexibility in wiring. Now that 2 coils are present, you now have 2 (series vs. parallel) whereas the SVC only has 1.
Because humans detect a change in volume exponentially, please note that you will NOT notice a difference between volumes of a DVC sub vs. a SVC sub powered by the same amount (even if you switch wiring methods with the DVC).

 

They're for different applications usually. The dual VC sub is used in a satellite configuration where a crossover splits out the higher frequencies to the midrange and tweeter drivers downstream from the sub. Both channels from the AMP are wired to the sub and the sub has two outputs to separate midrange and tweeter components. This single sub woofer saves space and is possible due to the lower frequencies having lower channel separation impact on the human ear. We don't recognize lower frequencies as coming from a particular direction as readily as higher frequencies.

-Xover-midrange-Xover-tweeter
AMP=SUB=
-Xover-midrange-Xover-tweeter



[Modified by mad skillz, 11:56 AM 12/5/2001]