User manual

2-6 E-PAC (V02) User Manual
WARNING!
WARNING!
E-PAC rear panel
configuration switches
REMOTE
LO IMP
DELAY ON
CUT
HFA
SPKR
21 3 4 5 6 87
ON
2.7. Mains power switch
The on/off switch is located on the rear panel and isolates the
mains power supply to the E-PAC. The switch on the front panel
has the functions ON/MUTE/STANDBY and does not isolate the
E-PAC from the mains power supply.
2.8. Mains power connection and fuse protection
A 3-pin IEC socket with an integrated fuse holder is provided for
connecting the E-PAC to the mains power supply. A suitable power
cable is supplied. Only connect the E-PAC to mains power supplies
with an earth (ground) conductor.
Make absolutely sure that earth (ground) is connected correctly.
Before you connect the device, check that the mains voltage and
frequency corresponds to the specifications on the configuration
sticker on the rear of the E-PAC.
A replaceable 20 mm fuse is integrated in the IEC mains socket
(230 V version: 3.15 A Time Lag (T), 100 V and 115 V versions:
5 A Time Lag (T)). It is connected in series to the primary winding
of the mains transformer and fails if the current drain is exceeded.
There is a spare fuse in the fuse holder.
If the fuse has failed disconnect the E-PAC from the mains supply
before replacement. Only use a fuse of the correct type and
nominal current value. Before restoring power to the E-PAC all
cabling should be checked for faults. If in any doubt disconnect all
signal and loudspeaker connections.
2.9. Configuration switches
There are a total of 8 DIP switches on the rear panel of the E-PAC
for configuring the controller and the output stage.
Switch 1 - CUT
Set to CUT, a high pass filter is inserted in the controller signal
path. The speaker system is now configured for use with an active
subwoofer.
The cut-off frequency is 110 Hz for all configurations except the
linear mode (130 Hz). The CUT switch has no function in
subwoofer configurations (E12-SUB, E18-SUB).
Switch 2 - HFA
In HFA mode (High Frequency Attenuation), the HF response of the
speaker system is rolled off. The HFA circuit configures the
loudspeakers to provide 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.
This switch has no function for subwoofer configurations (E12-SUB,
E18-SUB).