Positioning and Optimizing
20
Dynaudio Sub 300/500
Phase
With the phase settings you can adjust the timing relationship between the
subwoofers and main speakers. If either subwoofer or main speaker are slightly
delayed in response in relation to the other, it can result in decreased bass output in
the frequency response area where they overlap each other.
The Phase relationship between subwoofer and satellite speakers is very dependent
on relative distance, construction and working principles of the main speakers.
The figure left shows a case whereby phase of the subwoofer and main speakers are
incorrect in the critical overlap area, thus significantly reducing acoustic output in the
listening room in that area. Incorrect phase relation of subwoofer to main speakers in
critical overlap area: Reduced acoustical output in overlap area, even if levels are set
correct.
To find the optimum phase setting:
1. Playing the same bass-rich track which also covers the overlap area, repeatedly
press the
0°
, and its opposite phase, the
180°
button in succession.
2. Without changing volume level, do the same with the
90°
and its opposite phase,
the
270°
button.
3. Using the set of phase settings that provided the biggest difference in bass
response found in the step above (either
0°
⇔
180°
or
90°
⇔
270°
), press each of
the two buttons in alteration.
The position in which you experience the most bass is the correct setting.
4. If it appears that the bass is too much reduce the volume level until it sounds
homogeneous.
Combined frequency response
Subwoofer
Main speakers
Le
v
el
Frequency
LEVEL
POWER
SUBWOOFER CONTROL
DSC 1
OFF
ON
CROSSOVER FREQUENCY Hz
EXT
270
o
180
o
0
o
90
o
PHASE
A
D
C
B
PRESET
D NAUDIO
A U T H E N T I C F I D E L I T Y
60
80
100
FLAT
Sub300_500_en.book Page 20 Dienstag, Mai 11, 2010 5:02 PM
