Originally Posted by psgcdn
Except now you have it lower than the La Scala (which has identical drivers but less bass extension than the Klipschorn), lower than the Cornwall, which is impossible, and lower than the Heresy, which is ridiculous.
Adjust the half-space sensitivity whoever you like to reach an in-room sensitivity of 104 (or 105) dB (1/8 space, which is how it's used in-room). Anything else makes no sense.
Yes, the (correct, I think) implication of my post is that to use the Klipschorn properly
it needs to be used in a corner (1/8 space), and when so doing you get sensitivity of 104/105 db, even though the farther reaches of Klipsch's testing room are not like a home listening room, but are indeed anechoic
If anything, the Khorn would be even more sensitive in many real listening rooms. Some people have implied that the sensitivity of the Khorn is lower than advertised. I believe this is wrong. The problem is that some reviewers measure it AES style, in a way it would never
be used, not
in 1/8 space, and then get a lower figure, like 98 (Heyser, though, after measuring 98, did say that the sensitivity would be more like 104 in a room
which is pretty much the gain increase -- 6 dB -- a corner provides).
As to the La Scala, Belle Klipsch, Cornwall, etc., they were designed to be at least against a wall, where there is some bass reinforcement and room gain. Paul W. Klipsch advised putting "any speaker, of any kind" in a corner, although the Cornwall was thus named because it would work O.K. in a corner or along a wall, where it would have to be (between two Khorns) for Klipsch's "Wide Stage Stereo." Later writers have suggested putting absorbers on the near walls of the corner, starting even with the front of whatever speaker is being used, to attenuate any midrange and treble reflections produced by the close walls. To reflect a compromise between PWK's suggested use, and the usual placement preferences of Klipsch consumers (speakers never out in the middle of a room, and never on stands or legs) I believe the La Scala, La Scala II, Belle, Cornwall, Heresy, etc. are not measured as AES would suggest, but in a more reinforcing space, but not 1/8, except for the Khorn and, perhaps, the Jubilee. All of this has been discussed on the Klipsch forum from time to time. Roy Delgado of Klipsch would be the one who knows.