d&b audiotechnik C7-SUB, Manual, Page: 5 / 8

C7-SUB Manual (3.0E) Page 5 of 8
Operation with D12
Selecting C7-SUB mode in the D12 enables up to two C7-SUB
cabinets to be driven by each channel. In applications with low
continuous levels and low ambient temperatures up to three
cabinets per channel may be connected.
When the D12 is operated in "Mix TOP/SUB" mode C7-SUB
cabinet and a respective full range system can be linked together
locally and fed by a single 4-wire cable from either amplifier
output connector.
IMPORTANT!
To apply SenseDrive for the subwoofer, EP5 connectors and 5-wire
cables have to be used. When operated in "Mix TOP/SUB" mode
the subwoofer has to be fed from the output B connector of the
D12 amplifier.
Controller settings
For acoustic adjustment the 100 Hz setting can be selected.
100 Hz
If the 100 Hz setting is selected, the upper operating frequency of
the system is reduced from 140 Hz to 100 Hz. This setting allows
the C7-SUB to supplement TOP cabinets in full range mode (i.e.
CUT not selected).
The 100 Hz setting may also be used with TOP cabinets in CUT
mode to compensate for room resonances often found in the
125 Hz band.
Operation with E-PAC (Version 3 with display only)
Selecting C7-SUB mode in the E-PAC enables one C7-SUB cabinet
to be driven at an output power of 300 Watts. We do not
recommend that two C7-SUB cabinets are driven in LO IMP mode as
the 6 dB reduction in input level to the loudspeakers results in no
gain in acoustical output.
The 100 Hz setting is available. The characteristics of the 100 Hz
setting is explained under the previous section "Operation with
D12 - Controller settings".
Operation with P1200A
C7-SUB
100Hz
GR ISP
MUTE
OVL
-12 dB
-6 +6
0
Controls on C7-SUB
controller module
Up to two C7-SUB cabinets can be driven by each P1200A power
amplifier channel fitted with a C7-SUB controller module. Fitting
one C7-SUB and one TOP controller module allows a single
mainframe to drive two C7-SUB and two TOP cabinets. All cabinets
can be linked together locally and fed by a single 4-wire cable
from either mainframe output connector.
The 100 Hz setting is available. The characteristics of the 100 Hz
setting is explained under the previous section "Operation with D12
- Controller settings".