Multiple Amps and Straping amps

There are many reasons why you would want to run more then one amp at a time, whether it be different size subs or even door speakers. The door speakers use a different channel on the HU (head unit) to receive a much different signal then the subwoofer channel. An amp sometimes can be used as either a sub amp or a door speaker amp, it just depends on the controls on the amp. Most amps are meant to either be a subwoofer amp or a door speaker amp. The best subwoofer amps for the most part are monoblock amplifiers. A monoblock only has one speaker output channel and uses the inputted power much better.

To strap two amps together there are two ways to do so that work better then any other ways. The two ways both need to have amps that are the same output power.The first way is the easiest and you need two amps that have a master and slave mode. A master amp is the amp tat you tune and it will send out a signal too the slave amp. The slave amp's board is dead and isnt able to be tuned without tuning the master amp. The master amp is full positive, which means the speaker terminals that are positive are still positive, but you run the negative into the slave amps negative speaker terminals. The slave amp's positive is now the negatives for the subwoofers. The other way is to use a multimeter to measure the output of both amps and equal them out by adjusting the gains.