High power amp for monitors?


I am wondering if going from a 130W power amp to a 200WPC amp will have any benefit for my JM LAB cobalts. Is 200WPC too much for monitor speakers?
jeffo19
rwwear is right on.

For your benefit:
Assuming 91db speakers
1 watt = 91db
2 watts = 94db
4 watts = 97db
8 watts = 100db
16 watts = 103db
32 watts = 106db
64 watts = 109db
128 watts = 112db
256 watts = 115db

With that said, it takes double the wattage to gain 3db. It take 10db to get a perceived doubling of power. So, with exact same "quality" amps you won't hear a difference.

Your 150 watt rating is continuous. That is a huge amount of power to put out from any amp continuously. Try a different amp for fun. You may be surprised to find some 30 to 40 watt amps that can hold their own against a 200 watt amp...(another argument)
IMHO, I'd upgrade the speakers before getting a 200 WPC amp. I think you will get more of an improvement that way.
If I'm correct I think you would have to go to a least 250 watts to get a 3db increase in volume. I suppose this is why you want a more powerful amp? If it is SPL you're looking for, you may want to rethink spending the money on an amp and consider more sensitive monitor speakers?
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Well, they have average sensivity(91db) and are 8 ohm, in a small to medium size room(12X18), but I have a chance at getting a Rotel 991, and a RB 1070, for almost the same price, but the power recommendations for these speakers are up to 150WPC, so I am not sure if I should stay within that guideline, or opt for the 991.
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You have to double power to get a 3db increase in output. Shouldn't make much of a difference on a pure power basis.
Of course, the amp may have other properties that you like better.