Operation with D6 or D12
Select the controller setup E3.
Within the D12 amplifier this is available in "Dual Channel" and "Mix
TOP/SUB" mode.
Up to a total of four E3 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 110 Hz cut off frequency is inserted
in the controller signal path. The E3 is now configured for use with d&b
active subwoofers.
-5
0
5
10
-10
-15
-20
-25
-30
20
100
1k
10k
20k
Fig. 3: Frequency response correction of
HFA circuit
HFA circuit
In HFA mode (High Frequency Attenuation), the HF response of the E3
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.
Fig. 4: Frequency response correction of
CPL circuit
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 E3 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 dB.
REMOTE
LO IMP
DELAY ON
CUT
HFA
SPKR
2
1
3 4 5 6
8
7
LO IMP
1
REMOTE
2
1
3 4 5
6
2 3 4
ON
ON
Version 1
Version 2
Fig. 5: E-PAC Configuration for E3
Operation with E-PAC
To drive the E3 cabinet the E-PAC has to be configured to E3 mode.
For an E-PAC version 1 or 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 an LCD.
Selecting E3 mode enables the E-PAC to drive up to two E3 cabinets.
LO IMP mode allows the E-PAC to drive four E3 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".
E3 Manual
(3.1 EN)
Page 5 of 8
Summary of Contents for E3
Page 1: ...E3 Manual 3 1 EN ...
