MartinLogan pmn - Manual (Page 10)

Your Clarity launches a 30 degree dispersion pattern when
viewed from above. This horizontal dispersion field gives a
choice of good seats for the performance while minimizing
interactions with side walls (see figure 5). Make sure both
speakers stand exactly at the same vertical angle, otherwise
the image can be skewed or poorly defined. The wave
launch of both speakers is extremely accurate in both the
time and spectral domain. Consequently, small refined
adjustments can result in noticeable sonic improvements.
Controlled Vertical Dispersion
As you can see from the illustrations, your Clarity speakers
project a controlled dispersion pattern. Each Clarity is a
26” inch line source beginning 25" inches above the base.
This vertical dispersion profile minimizes interactions with
the floor and the ceiling (see figure 6).
NAC TM Dispersion
Due to dispersion limitations of small electrostatic panels,
your Clarity loudspeakers are equipped with NAC (natural
ambience compensation) drivers to fill in off-axis high-fre-
quencies. When the NAC is active, listeners sitting on-axis in
the listening window will find the effects of the NAC virtually
unnoticeable. Listeners sitting off-axis outside of the listening
window will find that high frequencies are accurately ren-
dered and comparable to those provided on-axis by the
Clarity’s ultra-precise electrostatic driver (see figures 7 & 8).
10 Dispersion Interactions
D
ISPERSION
I
NTERACTIONS
Controlled Horizontal Dispersion
Figure5. MartinLogan Clarity’s deliver a 30 degree wave launch dispersion
pattern distributed horizontally. Figure 6. Your Clarity speaker system is a 26” inch line source when viewed
vertically. Actual height above the base is from 25” inches to 51” inches.
Figure 7. Horizontal dispersion effects of the NAC driver. Figure 8. Vertical dispersion effects of the NAC driver.