d&b audiotechnik C690 Manuel - Page 6
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DELAY ON
REMOTE
LO IMP
ON
1
2
3 4 5 6
7
8
SPKR
HFA
CUT
E-PAC Configuration for C6
(E-PAC version 2)
C6
C U T
1 6 0 H z
M O N
O V L
I S P
G R
M U T E
0
- 6
+ 6
- 1 2
d B
Controls on C6
controller module
C6 isobar diagrams
C6/C690 Manual
Operation with E-PAC
To drive C6/C690 cabinets the E-PAC has to be configured to C6
mode.
For an E-PAC version 2, the configuration is selected by setting the
appropriate DIP switches on the rear panel.
For an E-PAC version 3, the configuration is set via the encoder in
conjunction with the LCD. Selecting C6 mode enables one C6/C690
cabinet to be driven at an output power of 300 Watts. LO IMP
mode allows the E-PAC to drive two C6/C690 cabinets with a 6 dB
reduction of input level to the loudspeakers.
The CUT and HFA settings are available. The characteristics of the
CUT and HFA settings are explained under the previous section
"Operation with D12 - Controller settings".
The settings MON and 160 Hz are not available with the E-PAC.
Operation with P1200A
Up to two C6/C690 cabinets can be driven by each P1200A power
amplifier channel fitted with a C6 controller module.
Fitting one C6 and one subwoofer controller module allows a single
mainframe to drive two C6/C690 and two active subwoofer
cabinets. All cabinets can be linked together locally and fed by a
single 4-wire cable from either mainframe output connector.
The CUT, MON and 160 Hz settings are available. The
characteristics of the CUT setting is explained under the previous
section "Operation with D12 - Controller settings".
MON switch and indicator
If the MON switch is selected the low frequency level is reduced by
3 dB. This setting reduces the low frequency energy gained from
the coupling effect of floor placement.
160 Hz setting (CUT and MON switches both selected)
If the 160 Hz mode is selected, a high pass filter is inserted in the
controller signal path. The crossover frequency of 160 Hz is higher
than in CUT mode and thus increases the available headroom in
the C6/C690. The 160 Hz setting can be selected when the C6/
C690 is operated with a d&b subwoofer.
Dispersion characteristics
The diagrams below show dispersion angle vs frequency plotted
using lines of equal sound pressure (isobars) at –6 dB and –12 dB.
The nominal 60° horizontal dispersion is maintained from 20 kHz
down to 2 kHz.
(3.0E)
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