Two Dual voice coil over subs. One 12" and one 10". Want 4 ohms going to amp?

First, don't go by max or peak ratings. They are only good for marketing and have to real use. Let us know what the RMS ratings are for the amp and subs. Better yet, let us know what models you are using so we can find out the complete specs.

With that additional info we should be able to tell you how to hook it up ideally.

Wiring up a single voice coil on a dual voice coil sub is not going to be considered a proper way of installing it. If you only hook up a single voice coil the power handling of the sub is reduced by about 10-25%. Also, it changes the specs of the sub which means it will need a different enclosure then it would if both voice coils are wired up.

Good Luck!!!

dvc subs will not work right if only one coil is hooked up, do not mix up subs and sizes, there is a chance you will loose more then you gain.

i would say use the 12 and get the sound quality it provides, mixing subs most often retards the sound and spl. level.

the one sub gets 500 watts per coil and is perfect, the next thing is setting the perfect crossover setting. 80 hz. or 100hz.

listen to mdc yhe knows.

ditch one of the subs cause it will likely degrade the sound.

i depends on how you wire it. in a series config the speakers will have + from amp to + speaker side 1 to - speaker side 1 + speaker side 2 - speaker side 2 - to - amp. which is 4ohm + 4ohm= 8ohm load on the amp which lowers the power of the amp. if you wire the speakers in parallel then the speaker's coils are hooked up ++ to + Amp and -- to - amp which makes the load on the amp 2ohm. 1/[(1/4ohm)+(1/4ohm)]=2 ohm . like that the amp will put out more power but draw more current. which means the amp will heat up more and so will the speaker therefore during long periods of play at max or high volume the amp might over heat and turn off, or worse burn up.