[Elecraft] Amplifiers in general

[Jim Brown]

On Sat,12/31/2016 6:29 PM, Bill Frantz wrote:
> We concluded that the very low harmonic and IMD distortions of the 
> sound system made it easier to decode the (undistorted) acoustic speech.

That system was highly respected by auidio pros at the time. The primary 
reason it was so clean was that each instrument was feeding its own 
vertical line array. Loudspeaker arrays like that produce a narrow beam 
in the vertical plane, but are wide in the horizontal plane. It's like 
stacking antennas. That narrow beam greatly reduces reverberation, which 
is what made the sound easy to understand. Another advantage of that 
system was that if you were reasonably close, you could localize each 
instrument aurally as well as visually. That also makes the sound 
cleaner. And yes, the distortion was probably lower, but the other two 
reasons I noted are probably the most important.

73, Jim K9YC