KH 120 |
7
Positioning the loudspeakers
X
Carry out the following steps very accurately, since the more accurate the physical arrange-
ment of the loudspeakers in the room, the more accurate the reproduction will be at the
listening position .
X
Observe the recommended distances between the loudspeakers and your listening position
(imperial dimensions are approximate):
•
Minimum: 0 .75 m (2 .5')
•
Recommended: 1 .0–2 .0 m (3'–6')
•
Maximum: 4 .0 m (12')
X
Avoid positioning the loudspeaker at a distance “d
wall
” of 0 .8 to 2 m from the wall behind
the loudspeaker . When positioning bass managed loudspeakers, avoid a distance “d
wall
”
of 0 .8 to 1 m from a solid wall behind the loudspeaker . Similarly, avoid these distances
from solid side walls or a solid ceiling . Respecting these positioning limitations reduces
the chances of dips in the low frequency response (comb filtering) caused by strong reflec-
tions .
X
Copy the diagram “Installation angles” that can be found at the end of this operating man-
ual .
X
Place the diagram at the listening position or center of the listening area .
X
Using a tape measure, place the loudspeakers at the same distance from the center of the
diagram “Installation angles” . To ensure good imaging, do this at an accuracy of at least
1 cm (
1
/
2
") .
X
If the loudspeakers cannot be placed at the same distance from the listening position, com-
pensate for distance differences > 1cm
(
1
/
2
") by delaying closer loudspeakers by 30 µs/cm
(76 µs/inch) .
X
At the same time, check the location of the loudspeaker cabinet . This depends on the appli-
cation:
•
2 .0 systems (stereo): ±30°, plus optional subwoofer(s)
•
5 .1 systems:
ITU-R BS .775-1:
0°, ±30°, ±110° (±10°), plus optional subwoofer(s)
(center, front left/right, surround left/right)
ANSI/SMPTE 202M:
0°, ±22 .5°, arrays to the surround left and to the surround right,
plus optional subwoofer(s)
•
7 .1 systems:
0°, ±30°, ±90°, ±150°, plus optional subwoofer(s)
(center, front left/right, side left/right, back left/right)
The acoustical axis of the KH 120 is located at the midpoint of the bass and tweeter drivers .
X
Always point the acoustical axis, in the horizontal and vertical planes, towards the listening
position .
The acoustical axis is a line perpendicular to the loudspeaker’s front panel along which
the microphone was placed when tuning the loudspeaker’s crossover during design .
Pointing the acoustical axis, in the horizontal and vertical planes, towards the listening
position or center of the monitoring area will give the best measured and perceived
sound quality .
Distances
d
wall
Arranging the
loudspeakers
at an angle
x = 9.1 cm
y = 17.0 cm
EN
