Good amp, high quality
- 1 dual 4ohm vc sub with 200W
- 1 dual 4ohm vc sub with 400W
- 2 single 4ohm vc subs with 100W each
- 2 single 2ohm vc subs with 200W each
Good amp, good quality... and you can run the same setup as above
Good amp, good quality
- 1 dual 4ohm vc sub with 400w
- 1 dual 4ohm vc sub with 600W
- 2 single 4ohm vc subs with 200W each
- 2 single 2ohm vc subs with 300W each
Good amp, Fair quality, not alot of power
- 1 dual 4ohm vc sub with 250w
- 1 dual 4ohm vc sub with 300W
- 2 single 4ohm vc subs with 125W each
- 2 single 2ohm vc subs with 150W each
Those are probably the only Amps I would look at. If these were to power a subwoofer(s), I would go with one 15" dual 2-ohm VC sub or (2) 12" single 2ohm vc subs. If you build or buy the box, make sure, if you get (2) 12" subs, that the box has (2) sealed enclosures instead of one big box. there's really no difference in the two, but the subs will be working against eachother in the one big box, and won't be as loud.
I believe the (2) 12" subs will have a bigger surface area which will bring out the lower frequencies more, even though most music doesn't go below 35hz, but it's nice to know that your system can handle 20hz and below. Decible-wise, (1) sub with 600W will mathematically be 3dB quieter than (2) subs with 300W each; somebody check my math
Personally I would get one High efficiency 15" subwoofer as space might not be a problem in an explorer ---to a certain extent--- a 25ft3 box is too big for just about any vehicle... Depending on the subwoofer, anyhting from about 1ft3 to 3ft3 should be large enough.
Did I miss anything??