![d&b audiotechnik A1 Mainframe F-Series User Manual Download Page 46](http://html.mh-extra.com/html/dandb-audiotechnik/a1-mainframe-f-series/a1-mainframe-f-series_user-manual_494382046.webp)
F2
(1.1E)
F2-CO rear panel
P I N A S S I G N M E N T
O U T P U T
A L O W O U T +
B L O W
O U T
-
C S P E A K E R
I D
D S P E A K E R ID
E S E N S E D R I V E +
F S E N S E D R I V E -
G H I G H O U T +
H H I G H O U T -
F2
F2-CO controls
GR LO
ISP
GR HI
OV LO
OV HI
CUT
MUTE
F2-CO
0
-6
-12
-18
dB
ID
0
-2
-4
-6
HI dB
F2-CO Controller module - Controls & indicators
Standard setting
A single configuration switch (CUT) is located on the top left of the
module front panel. A yellow LED next to the switch illuminates
when it is selected. With the configuration switch not selected, the
F2 system is configured for speech and vocal reproduction without
subwoofer support.
CUT switch and indicator
With the CUT switch selected, the frequency and phase response of
F2 loudspeakers is modified for operation with d&b B1-SUB,
B2-SUB, C4-SUB or E18-SUB active subwoofer systems.
HI level control
The HI level control has a 0 to 6 dB range and cuts the HF
response above 1 kHz. For distances beyond 20 m, the control
should be set to its 0 dB position. For close coverage, below 20 m,
a better balance is obtained with the control set to -3dB.
Recommended subwoofer level control settings
With the F2-CO level control set to 0 dB, subwoofer level controls
should be set to the following values:
−
B2-SUB:
3 dB
−
2 x C4-SUB:
0 dB
−
2 x E18-SUB:
+2 dB
−
2 x B1-SUB:
1 dB
−
B1-SUB:
0 dB, F2-CO at 5 dB
Controller module rear panel
A single 8-pin CA-COM output socket is fitted to the module rear
panel.