How do u know what amps can match your subs?

Question

what do the watts and rms have to be equal to on the the subs and amp

Answer 1

match the rms of the subs with the rms of the amp

Answer 2

its experience.

When you set it propertly and use carefully, you can use stronger amp than speaker itself to use maximal potential of the speaker.

Answer 3

Peak watts, no, peak power doesn't mean anything. but watts RMS yes, they should be close to each other. i personally give my subs twice the watts RMS on a daily basis, i just use it wisely and keep the gain down.