well there are 4 wires now to the factory speaker which is a DVC 8" sub. Can I just get 2 single voice coil subs which use only 2 wires? Two wires to each sub means I am using all 4 wires. Perhaps adding more bass since I will be pushing 2 subs. Thanks.
Best way to do this is to find out how much resistance each coil is on the factory sub
So if each coil on the factory speaker is 2ohms each, then you would need (qty)2 single voice coil speakers, each 2 ohms speaker.
yes you can do that.
But, depending on the speaker, it probably will not sound as good as a single speaker would.
I heard that the output of the 4 wires are weak.
Best thing to do if you want more bump is to just go with out the four wires and just get a separate amp/box/sub. I think you'd be wasting time and money trying to do what you want to do because ti wouldn't sound good. imo