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Shocked. Need Opinions. How muck power do I need?

I’m moving so of my sound gear around. As a temporary measure, I set up my little Cambridge EVO 75 in my main system. Driving my Dali Mentor 6s in a large room (36x36). Speakers are 9 feet apart and seat is 10 feet from speakers. This 75 water replaced my much more powerful monoblocks. To my shock, the amp drove these speakers just fine. The bass was a little weaker, but perfectly acceptable.  Here’s what I want to know— if 75 watts are enough, will 40 watts do? I’m talking all solid state. What say you?
 

 
 

 

tomaswv
kijanki's avatar
kijanki
4,508 posts
 

With 40W it will be -2.7dB.  Perceived loudness will be 16.6% lower (still over 100dB)

curiousjim's avatar
curiousjim
6,000 posts
 

I listen to Mostly Jazz and some rock and I bet I don’t go past 5 watts 90% of the time. I actually have two systems.  one has 40 watt mono blocks and it can blast you out of the room the other has 300 watt mono blocks and I bet I’ve never used 100 watts. I also have a subwoofer, that I rarely use because on the upstairs system, I rarely need it.  So it’s probably going back into the downstairs system.

ssg308's avatar
ssg308
113 posts
 

I believe my Pass X250.8 pushes about 12% class A and I never had any needs to out of it. About 30W is plenty as long it is backed up with huge power supply and enormous banks of capacitors 

carlsbad2's avatar
carlsbad2
2,036 posts
 

I haven't owned an amp over 6 watts per channel for quite a while.  My new amp weighs 300 lbs and makes 4 wpc.

--Jerry

larryi
4,583 posts
 

What amp weighs 300 lbs and makes 4 watts?  

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