car amps and subs

[Dutchmaster420]

i have some questions on amps and subs...first off whats the diffeence between these amps

2-channel Amps
Multi-channel Amps
Mono Subwoofer Amps

im new to car audio really since i just got my whip

also how do i make sure im utilizing the max power the subs can handle so i dont have a 2000watt amp and im only pushing 1600

what does bridged mean?

also what am i looking for really for quality in subs and an amp...frequency

also what is the difference bwteen 2 and 4 ohms?

i already have a pioneer 50wattx4 deck...model deh-p6400


any help appreciaated thanks

 

[Reliant]

2 Channel means that it can output to 2 channels or speakers, multi is the same but for whatever number of channels it has, and mono is a single channel. When you bridge you are combining channels to go to one speaker. An example would be if you had a 300x2 amp and one sub. You can have 300 watts to two channels but you can bridge and give all the juice to that one sub.

 

[Dutchmaster420]

so what would be better...two 1000 watt amps..one into each sub mono, or one 2000 watt amp split between them