BOSCH PLE‑1ME120 Plena Mixer Amplifier

▶ 4 microphone / line inputs, plus music source input
▶ Announcement only output, 3‑wire volume override
▶ Output power 120 Watts
▶ 2‑tone chime

Power
The mixer amplifiers come in 120 Watt output power. This power is directly available on 100 V (70 V for US versions) constant voltage connections and on a low
impedance connection for a 4 ohm load. Moreover, the amplifiers have a separate 100 V (70 V for US versions) 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.

Controls and indicators
• On/off switch
• Power on LED
• LED VU meter for master output (LEDs for -18, -12 -6, -3, 0 dB)
• Master volume knob
• Four volume knobs for microphone inputs
• Volume knob for background music
• Knob for treble level
• Knob for bass level
• Headphone socket

Technical Specifications :

Mains power supply
Voltage 230 VAC ±10%, 50/60 Hz (reduced power at lower mains voltage)
Power consumption
400 VA
Performance
Frequency response (Line) 60 Hz to 20 kHz (+1/‑3 dB @ ‑10 dB ref. rated output)
Frequency response (Mic.) 70 Hz to 20 kHz (+1/‑3 dB @ ‑10 dB ref. rated output)
Distortion <1% @ rated output power, 1 kHz Bass Control Max. ± 8 dB, Treble Control Max. ± 8 dB Loudspeaker output Connector Screw terminal, floating Max / rated 180 W / 120 W Mic./Line input 4 x Input 1 (push-to-talk contact with priority) 5‑pin Euro style, balanced, phantom Input 2 3‑pin Euro style, balanced, phantom Input 3 and 4 TRS Jack (1/4, 6.3mm) balanced Sensitivity 1 mV (mic.); 300 mV (line) Impedance >1 kohm (mic.); >5 kohm (line) Dynamic range 93 dB, S/N (flat at max volume) >63 dB (mic.); >70 dB (line)
S/N (flat at min volume/muted) >75 dB, CMRR (mic.) >40 dB (50 Hz to 20 kHz)
Headroom >25 dB, Speech filter -3 dB @ 315 Hz, high-pass, 6 dB/oct
Phantom power supply 16 V via 1.2 kohm (mic.)
Music input
Connector Cinch, stereo converted to mono Sensitivity 200 mV Impedance 22 kohm
S/N (flat at max volume) >75 dB S/N (flat at min volume/muted) >80 dB
Headroom >25 dB
Mechanical
Dimensions (H x W x D) 100 x 430 x 270 mm/(19″ wide, 2U high)
Mounting Stand-alone, 19″ rack, Color Charcoal
Weight
Approx. 8.9 kg