to set all the controls to the silver pins to configure
the system for their particular use. A second user can
set all controls to the red pins for their configuration.
Tone controls
The unique tone controls provide separate control for
mic/line inputs and music inputs so that the voice on
the microphones can be specifically optimized for
excellent speech or singing. Correspondingly, the tone
controls for background music provide the most
appropriate music reproduction.
In addition, the tone controls are not standard bass
and treble controls. Our experience has led us to
develop a tone control that can be used as a
traditional tone control with high and low control, but
has a powerful contour that addresses the problems
found in real situations.
The tone control for the microphone and line inputs
boosts warmth in voices without boosting rumble and
cuts rumble without loosing warmth in the low
frequencies. In the high frequencies, the tone control
boosts sparkle without adding sharpness, but when
cutting is first, cuts harshness and sharpness without
reducing clarity.
The tone control for the music inputs boosts deep
bass first without making the sound boomy, and cuts
rumble without loosing warmth in the low frequencies.
In the high frequencies the tone control is similar to
the microphone inputs, with slightly different
frequencies to suit music reproduction.
For easy integration with another PA system or a
telephone paging system, a telephone / 100 V
emergency input with VOX activation is provided. It
has its own preset volume control and overrides all
other inputs, including call station and inputs 1 and 2.
The unit also has a line output to add amplifiers for
larger systems, with more output power, this output
can be switched to music only so that for instance
music on hold can be provided for the telephone
system. Insert (loop through) input and output
connections enable external sound processing
equipment, such as an equalizer or the Plena feedback
suppressor, to be connected between the preamplifier
and the power amplifier stages.
Power
These Plena mixer amplifiers come in 120 and
240 Watts output power. This power is directly
available on 100 V constant voltage connections and
on a low impedance connection for an 8 ohm load.
Moreover, the amplifiers have a separate 100 V call-
only output channel for addressing areas where only
priority announcements are required. The call-only
output can also be used for 3-wire remote, volume
control override.
Zones
The mixer amplifier has two zone outputs. The music
can be switched on and off in the zones via the front
panel and optional wall panel. Announcements from
the PLE-2CS two-zone call station can be routed to
zone 1 or zone 2, or both. Announcements from the
tel/100 V input or inputs 1 & 2 are routed to both
zones. Input 1 can be used for a PLE-1CS all-call call
station or any other microphone or call station with a
PTT contact.
Output status
An LED VU meter monitors the master output. A
headphone socket, below the VU meter, provides the
mixer output before zone selection so that it is
possible to listen to the output before the signal is
sent to the zone. For total reliability and ease of use, a
limiter is integrated into the output stage to restrict
output if the user applies too much signal.
Controls and indicators
Front
• On/off switch
• Power on LED
• LED VU meter for master output (LEDs for -18, -12 -6,
-3, 0 dB)
• Master volume knob
• Six volume knobs for microphone inputs
• Knob for treble level
• Knob for bass level
• Headphone socket
• Two zone selector buttons
• Background music button
Back
• Dip switches
• Chime level
• Ducking level
• Tel/100 V volume control
Interconnections
See Technical Specifications.
Certifications and approvals
Safety
acc. to EN 60065
EMC emission
acc. to EN 55103-1
EMC immunity
acc. to EN 55103-2
Installation/configuration notes
Rear view
2 | PLE‑2MAxx0‑EU Plena Mixer Amplifier
