200 watts 4 ohms how many dbs?

Question

if you "double the power" you gain 3 db so does tha mean i would get 107 db from some 200s? or is it still 87???

Answer 1

Are you doubling the power on one sub, or are you adding another sub with equal power?

Try the calculator here to compare your old power to your new power.

http://www.bcae1.com/decibel.htm

BCAE is the car audio enthusiasts bible. Bookmark it ;)

Answer 2

From 87 dB to 107 dB is a 20 dB gain, which represents a 100 times increase in power. In your example, a 200 W amp represents a 20 dB gain versus a 2 W amp, all other things being equal.