Find out the “watts RMS” rating of the sub. Then, multiply the number of subs you have by the RMS rating of each, to get their total RMS rating. You want to make sure the amp you choose will supply no more than the sub systems total RMS rating.

What amp does my subwoofer need?

Find the Subs RMS Rating For multiple subs, multiply the number of subs by their RMS ratings for a total RMS rating. The amp you choose will have to be capable of powering 75% to 150% of the total RMS rating for the entire subwoofer system.

How do I know what size amp I need?

Generally you should pick an amplifier that can deliver power equal to twice the speakers program/continuous power rating. This means that a speaker with a “nominal impedance” of 8 ohms and a program rating of 350 watts will require an amplifier that can produce 700 watts into an 8 ohm load.

What is the best type of amp for subs?

What Are The Best Amplifiers For Subwoofers?The very best amplifier for a subwoofer is a class AB or Class H amplifier.Class D amplifiers are too slow and cannot keep up with repetitive bass.A class AB has a toroidal transformer and coke can capacitors so when the kick drum kicks the woofer responds instantly.More items •Feb 5, 2020