You never can tell. The max rating is undefined and just means that in some circumstance you could feed 200W into the speaker (or get 200W out from the amplifier) for some undetermined length of time (like a few milliseconds or even micro seconds) which is pretty meaningless.
Any amp will power a 15" sub. What you need to know is what is the RMS of the 15" sub. Lets say its 200 watts RMS than you will want a max of 200 watts for your amp.
Each speaker is rated at 200 watts rms
42.4W
The only way to convert watts to PMPO is when you are using watts RMS. With this, the equation is 1 watt RMS is equal to 100 PMPO. PMPO stands for peak music power output.
Rms is watts that's the amount of watts a speaker is rated for.
RMS watts is not a real measurement. The correct measurement is "average power", which is measured in "watts". It is dervied from RMS voltage, but that doesn't make it "RMS watts". "RMS watts" would be 22% higher than the correct "average watts".
Find out what the rms is for that sub woofer,if it'1000 then find out what the max is,then you could go between the rms power and the max power to get the right amount of watts.
"Watts RMS" is better represented as "Watts average". Since 1000 watts is 1kw you have "1000 watts average" and you can derive "1Kw average". So 1000 watts RMS will consume 1 Kw
Scroll down to related links and read "Why there is no such thing as 'RMS watts' or 'watts RMS' and never has been".
it would depend on what brand and what size sub it is i would recommend 250 watts
Scroll down to related links and read "Why there is no such thing as 'RMS watts' or 'watts RMS' and never has been".
the subs rms tells you what u need.. so a 900 watt rms sub would be best with an amp from 800-1000 watts