Sorry if this question's been asked before, but...I have a 4-ch. amp that can output both 4-ohms AND 2-ohms. I have 2 front door 6.5" speakers that are rated ONLY for 4-ohms. I also want to buy a DVC sub. How can I wire my amp to provide 2-ohms power to the front-door speakers, AND can I use a DVC sub (or am I limited to just SVC sub)?
since your 6.5's are 4 ohms your front channels are going to operate at 4 ohms. The only way to change that would be to get a pair of 2 ohm speakers. They aren't that common, but they ARE available.
As for the sub. You can bridge the remaining two channels to run a sub. Either an SVC 4 or a DVC 2 will work well.