Operation with D6 or D12
Select the controller setup E0.
Within the D12 amplifier this is available in "Dual Channel" and "Mix
TOP/SUB" mode.
Up to a total of four E0 loudspeakers can be driven by each D6 or D12
amplifier channel.
Controller settings
For acoustic adjustment the functions CUT, HFA and CPL can be
selected.
CUT circuit
Set to CUT, a high pass filter with a 120 Hz cut off frequency is inserted
in the controller signal path. The E0 is now configured for use with d&b
active subwoofers.
HFA circuit
-5
0
5
10
-10
-15
-20
-25
-30
20
100
1k
10k
20k
Fig. 4: Frequency response correction of
HFA circuit
In HFA mode (High Frequency Attenuation), the HF response of the E0
system is rolled off. The HFA circuit provides a natural, balanced
frequency response when a unit is placed close to listeners in near field
or delay use.
High frequency attenuation begins gradually at 1 kHz, dropping by
approximately 3 dB at 10 kHz. This roll-off mimics the decline in
frequency response experienced when listening to a system from a
distance in a typically reverberant room or auditorium.
CPL circuit
Fig. 5: 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 E0 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.
Operation with E-PAC
Selecting E0 mode enables the E-PAC to drive up to two E0 cabinets.
LO IMP mode allows the E-PAC to drive a maximum of four E0 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 in the previous section "Operation with
D6 or D12 - Controller settings".
E0 Manual
(3.2 EN)
Page 5 of 10
