What is your take on high efficient speakers vs. low efficient speakers?

The question: what is high sensitivity? Yes I agree. For real high sensitivity let say 98dB and up it is an issue.

My Classic Audio Loudspeakers are 98dB and flat to 20Hz. They employ dual 15" woofers as well as field coils to reduce distortion and compression while increasing speed.

I have a standing wave in the room that prevents bass impact at the listening chair. This issue was solved by the addition of a pair of Swarm subs asymmetrically placed in the room. I didn't run 4 subs because the main speakers go as low or lower than most subs. I used the Swarm subs because they are designed to be placed directly against the wall, inside the room boundary effect. This allows them to be more compact and out of the way; they are flat to 20Hz as well but not nearly as efficient, each using a single 10" driver. No troubles in the blend department though. No troubles with the WAF either :)

I like speakers that are true solid 96 db and up! So I can use use El-84, El34, 2A3 & big triodes like 805 etc.! Enjoy!😊

I agree with Clear Thinker that it's a matter of what you like. I have three pairs of Maggies and swear by them - even though they're notoriously inefficient,  The largest pair -- in a room which is 32' by 18' -- is drriven with an amp ofd 250 watts per channel --  loud enough to make the neighborhoods complain were in not for the fact that the house is deep in the woods.  

@atmasphere wrote:

My Classic Audio Loudspeakers are 98dB and flat to 20Hz. They employ dual 15" woofers as well as field coils to reduce distortion and compression while increasing speed.

I guess one could even argue, given their 16-ohm load, that they're 101dB sensitive from the usual 8 ohm standard sensitivity is measured by. Not to mention that many speakers today are closer to a 4-ohm load, yet without being accurately reflected by their sensitivity rating.. 

^^ Yes. The difference between sensitivity and efficiency specs is poorly understood. You have to do math to convert from one to the other unless the speaker impedance is 8 Ohms.