funny you just said that....
my friend has a pheonix gold xmax 12 rms is 500 watts..
he's powering it w/an xtant amp w/250watts goin to it....
he's not sastified.....
and its a shame when u know someone w/a jlw0 who's sub sounds better and louder!
so i think its better to get as close to rms if not over it as possible!
its better for a sub to be overpowered than under!!
another case was me and my 5channel amp powering a jlw3......
i had 150 watts goin to it when the rms was 250 watts...
after i was able to get to the rms i understood why companies set rms.... b/c its recommended..... and if u don't follow at least follow that, you won't see how well it can perform... so i think he is right about calling it a J O K E !
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don't get mad either!