First Power-Up - dB Technologies Sigma S218 Caractéristiques Techniques

2. FIRST POWER-UP

The package of SIGMA S218 subwoofer contains:
• S218 subwoofer
• powerCON power cable
• fuses rated for operation in the 100-120V~ range
• quick start user manual and warranty documents
CONFIGURATION AND OPTIMISATION
SIGMA S218, used in a stand-alone configuration, is characterised by
omnidirectional sound emission. This feature is emphasised in case of
low frequencies, while it decreases as frequency increases.
For subwoofer use optimisation in given configurations, the control
panel displays the following:
• "OUTPUTS" SECTION [4]
1. Xover (the signal present at OUTPUTS may be filtered with a
crossover frequency for daisy chain to a speaker, at 120 Hz or
90 Hz)
2. Outputs Mode (Link if the signal present at OUTPUTS is the one
applied to the subwoofer, Xover if the signal at OUTPUTS is
filtered according to the frequency selected by means of Xover
button)
• "SUBWOOFER SETUP" [5]:
1. Delay (applicable delay: 0 ÷ 4.5 ms, with 0.5 ms steps)
2. Polarity (0°, or 180°, useful for wavefront optimisation through
acoustic wave phase reversal)
Before power-up, set Subwoofer Level selector [3] to 0 dB (Mono or
Stereo, depending on the selected configuration).
SIGMA S218
26
BALANCED
OUTPUTS
OUT 1
2
BALANCED
OUTPUTS
BALANCED
INPUTS
OUT 1
1
2
INPUT 1
0
4.5
BALANCED
4.0
SUBWOOFER
INPUTS
SETUP
3.5
1
3.0
2.5
INPUT 1
0
4.5
4.0
SUBWOOFER
SETUP
3.5
3.0
2.5
BALANCED
OUTPUTS
2
OUT 2
XOVER
BALANCED
INPUTS
1
OUTPUTS
MODE
OUT 2
XOVER
SUBWOOFER
SETUP
OUTPUTS
MODE
INPUT 2
DELAY POLARITY SUBWOOFER
[ms]
0.5 LEVEL
1.0
1.5
2.0
0°
180°
5
INPUT 2
POLARITY SUBWOOFER
DELAY
[ms]
0.5 LEVEL
1.0
1.5
2.0
0°
180°
5
English
OUT 1 OUT 2
XOVER
OUTPUTS
MODE
4
120Hz
90Hz
Link
Xover
6
LIMITER
SIGNAL
INPUT 1 INPUT 2
4
MUTE/PROT
POLARITY SUBWOOFER
DELAY 120Hz
0
4.5 [ms]
0.5 90Hz LEVEL
READY
4.0
1.0
3.5 1.5
7
SERVICE
2.0 0°
3.0 Link
2.5
DATA
Xover 180°
6
5
LIMITER
0dB
STEREO
SIGNAL
MUTE/PROT
0dB
MONO
READY
3 7
SERVICE
DATA
0dB
STEREO
0dB
MONO
3
Cod. 420120258 REV. 1.0
LIMI
SIGN
MUT
REA
0dB
MO
3