When an amp puts out 90 watts....

Yes, I knew it was a tube amp but did not know that was characteristic of all tube amps. I just finished reading a thread with posts by Atmasphere and Almarg and others about amp design and was reading a review about the Copeland amp. The statement about it putting out the same power confused me with all the other info I had just tried to absorb.

A lot of what they wrote about was way over my head but rather than just plead ignorance and let it go at that, I have decided to try to educate myself about amps, and specifically, matching amps to speakers.

I think part of the reason I don't like my system as much as I think I should be able to given the components, is that there may be a amp / speaker mismatch although I am experimenting with room placement and will be bringing in a different source soon enough.

Ralph, that link keeps appearing in other threads so I guess it is about time I dove in...Thanks.

You should have just said so. List your whole system and some basics on your room. I'm sure someone will be able to point you in the right direction. As far as room placement goes, thats a great place to start. You'll learn a lot just doing that alone.

Rrog: It is the "norm" for me and, because it matters in my system, it's why I have a Krell 400cx driving my Thiel CS6s. My point was that the vast majority of amps do no comply with the doubling of power by the halving of impedance from the incrementals of 8 to 4 to 2 Ohms. Only a handful of manufacturers install power supplies robust enough to do this.

If you start with a reasonably powered amp and know the speaker impedence and efficiency are also reasonable, and act reasonably, you don't need to spend another moment on this power issue. Copland stuff is well regarded and I suggest you just set the whole system up and avoid the avalanche of opinions you could subject yourself to regarding room treatment, tiny wooden speaker wire bridges, gigantic power regenerators, fuse direction, and hairstyle tips...however, MY opinions are to be cherished as True Art and a gift to the reader...I'm a giver.

You should have just said so. List your whole system and some basics on your room. I'm sure someone will be able to point you in the right direction. As far as room placement goes, thats a great place to start. You'll learn a lot just doing that alone.

Maybe I will start another thread later but really, my reason for asking stems from reading a couple of different amp threads. There was a lot of discussion about impedance, slew rates, etc. and some calling out others for wrong information, etc. I guess I just want to have enough information to be dangerous like some of you other guys. :)

But seriously, I could not remember any information about amps delivering the same power into different loads and that is why I asked. Now I know why that is the case.

If you start with a reasonably powered amp and know the speaker impedence and efficiency are also reasonable, and act reasonably, you don't need to spend another moment on this power issue. Copland stuff is well regarded and I suggest you just set the whole system up and avoid the avalanche of opinions you could subject yourself to regarding room treatment, tiny wooden speaker wire bridges, gigantic power regenerators, fuse direction, and hairstyle tips...however, MY opinions are to be cherished as True Art and a gift to the reader...I'm a giver.

Wolf, I am a true connoisseur of your nuggets of wisdom...