A: You will need a 2 channel (if these are the only speakers in your car) or a 4 channel amp if you wish to power these as well as your rear speakers on the same amp.

Do not listen to the first post, your speakers come with crossovers that your amp will power. Then the crossover separates and distributes signals for the woofers and tweets...in an ideal setup the deck will only provide signal to an amp and its internal amp will power nothing.

Look for a decent...

A: You can wire up as many as the amp will allow for impedance and wattage.

The total watts RMS of all speakers should equal the watts RMS of an amp.

You can series-parallel speakers to end up with the required impedance the amp looks for.

Here is an example:

http://i81.photobucket.com/albums/j230/sparky3489/SERIES-PARALLEL.jpg

If your amp was 1000 watts RMS @ 4 ohms, Each speaker would have to be 250 watts RMS @ 4 ohms....

Alright, I have 2 1600 watt PAIR, Audiobahns (400w RMS) and
A Lanzar amp 1600 watts. Now my question is if i bridged my speakers parrallel at 2x650 (rms) will that blow my 2 subs?

A: That amp is underrated, but can still blow the two subs if pushed into clipping for long periods of time. Watch the gain knob, adjust it VERY carefully!

If the amp is 2channel (which it is) and the subs are 4ohms each, you CANNOT parallel the two subs to the bridged amp output! You may fry the amp!

Try to stay away from both Lanzar and Audiobahn in the future.

Good Luck!

Lanzar OPTI Drive OPTI65 Car speaker 250 Watt component 65 B000CHPJLQ Electronics Lanzar Car Audio Check Price