Speaker and amp pairing


Hi :)

Does this go here, in the amp sub, or does it not really matter?

I have been seeing a few threads here that mention the importance of pairing the speakers and amplifier.
So, I started doing some research, and came up with the following:

a) you want the correct impedance, as in the speakers should have a higher impedance and the amplifier a lower impedance
b) you want the proper amount of power; the wattage the amplifier puts out should match the speaker manufacturer’s recommended amplification levels
C) you want the speakers to have enough sensitivity so that the amplifier can effectively drive them

And that’s all I got :)

Is that about it - or is  there more to pairing than this?

Thanks in advance for any thoughts.
riffwraith
I'm with Henry. I don't get the obsession with sensitivity, especially when transducer engineers often deliberately choose a lower sensitivity driver set to get improved bandwidth performance.  It should be noted sensitivity is relevant only in passives.  Most actives can play as loud as you care to listen, leaving the efficiency argument behind.    
I'm with the last two posters. With modern amps, sensitivity is wholly irrelevant.

Some speakers are very revealing, like ESL's or magnetic planars. Only a very clean amp will sound good with those speakers, but fortunately, these are not hard to find. Your ears will tell you immediately if the amp is the right fit for the speaker. Any dealer should be able to point you in the right direction.

Oh, and ignore specifications. As Jonas Miller (of M&K fame) used to say, "The best audio analyzers possible are your ears."
sensitivity, response, sonic end product, physical end product, cost -- it is all about a fairly complex set of tradeoffs folks
High sensitivity speakers including big horns as I use always have more life like dynamics, immediacy and realism to me.