04/14 – 554622GEORG NEUMANN GMBH · LEIPZIGER STR. 112 · 10117 BERLIN · GERMANY
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Getting Started Quickly
0°
-110°
-30°
-120°
-100°
110°
30°
120°
100°
Place the loudspeakers at the correct angle
(ITU-R BS.775-1)
Place the loudspeakers at the same distance
Horizontal: Point loudspeakers at listening position
Use the acoustical axis as a reference
r
For 2-channel stereo use ±30°
Delay closer loudspeakers by 30 µs/cm (76 µs/inch)
Use the furthest loudspeaker as a reference
0°
-30°
-150°
-90°
30°
150°
90°
For 7.1 high definition systems
(no international standards)
r
2
r
1
t
del
= 30 µs (r
2
-r
1
)
ref
r
diff
Symmetrical loudspeaker and object placement in the
room improves stereo imaging, d
1
, d
2
, d
3
Keep back wall distance as
long as possible, d
4
d
1
d
1
d
2
d
3
d
4
d
2
d
3
Listening
position
*
Delays:
r
diff
t
del
5 cm (2")
10 cm (4")
20 cm (8")
50 cm (20"
1 m (3') 3 ms
1.5 ms
300 µs
600 µs
150 µs
Small near-field systems:
r
max
= 4 m (12')
r
typical
= 1 - 2 m (3 - 6')
r
min
= 0.75 m (2.5')
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