CPL circuit
Fig. 4: Frequency response correction of
CPL circuit
The CPL (Coupling) circuit compensates for coupling effects between the
cabinets when building closely coupled arrays. CPL begins gradually at
1 kHz, with maximum attenuation below 250 Hz, providing a balanced
frequency response when cabinets are used in arrays of two or more.
The function of the CPL circuit is shown in the diagram opposite and can
be set in dB attenuation values between –9 and 0, or a positive CPL
value which creates an adjustable low frequency boost around 65 Hz (0
to +5 dB).
Operation with E-PAC
REMOTE
LO IMP
DELAY ON
CUT
HFA
SPKR
2
1
3 4 5 6
8
7
ON
Fig. 5: E-PAC Configuration for Ci60/Ci90
(E-PAC version 2)
To drive Ci60/Ci90 or Ci45 loudspeakers, select the controller setup
Ci60/Ci90 (CI6/CI9 - possible with E-PAC version 2 from serial number
Z2500.000.02-01313 and E-PAC version 3) or the Ci45 setup (possible
with E-PAC version 3).
For an E-PAC version 2, the setup is selected by setting the appropriate
DIP switches on the rear panel.
For an E-PAC version 3, the respective setup can be selected via the
encoder in conjunction with the LCD.
Selecting Ci45/Ci60/Ci90 mode enables the E-PAC to drive one
Ci45/Ci60/Ci90 loudspeaker. LO IMP mode configures the E-PAC to
drive a maximum of two loudspeakers with a 6 dB reduction in input
level to the loudspeakers.
The CUT and HFA settings are available on versions 2 and 3 and are
explained in the previous section "Operation with D6 or D12 -
Controller settings".
Ci45/Ci60/Ci90 Manual
(9.2 EN)
Page 6 of 10
