d&b audiotechnik F1222, Руководство пользователя

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F1222 Manual (3.0E) Page 6 of 8
Operation with A1
G R L O
I S P
G R H I
O V L O
O V H I
C U T
H F C
1 2 2 0
M U T E
1222
0
+ 3 -3
0
-6
- 1 2
- 1 8
d B H I d B
I D
Controls on 1222
controller module
O U T P U T 2
O U T P U T 1
1220
P I N A S S I G N M E N 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 -
1222
1222 controller rear panel
Two F1222 cabinets can be driven by a single A1 mainframe fitted
with a F1222 controller module.
CUT switch
The CUT setting is available. The characteristics of the CUT setting
is explained under the previous section "Operation with D12 -
Controller settings".
HFC switch
The HFC setting is available. The characteristics of the HFC setting
is explained under the previous section "Operation with D12 -
Controller settings".
1220 switch
The 1220 switch configures the controller module to drive existing
F1220 loudspeakers. This setting is identical to the standard setting
of the 1220 controller module.
Controller module rear panel
Two 8 pin, identically wired, CACOM output connectors (male) are
fitted to the module rear panel. To avoid a potential shock hazard,
if a single F1222 cabinet is connected, the pins on the unused
socket are internally isolated from the mainframe power amplifier
outputs.
Compatibility to 1220 systems
The F1222 cabinet uses a different 12“ low frequency driver to the
F1220. Both systems have identical power handling capacity and
acoustical quality. For sound reasons the F1222 cabinet should not
be driven with a 1220 controller.
Dispersion characteristics
The diagrams below show dispersion angle vs frequency plotted
using lines of equal sound pressure (isobars) at
–
6 dB and
–
12 dB.
F1222 isobar diagrams (60 ° x40 ° )