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Bosch PLENA Series Operation Manual

Mixer amplifier, 4-zone, 240w
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PLENA Mixer amplifier, 4‑zone, 240W
PLE‑4MA240‑CN
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Operation manual

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  Summary of Contents for Bosch PLENA Series

  • Page 1 PLENA Mixer amplifier, 4‑zone, 240W PLE‑4MA240‑CN Operation manual...
  • Page 3: Table Of Contents

    Switching on and off Microphone control Music control 7.3.1 Source selection 7.3.2 Volume control Tone control Output control 7.5.1 Zone selection 7.5.2 Master volume control Troubleshooting Customer service Maintenance Technical data Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 4: Safety

    These service instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 5: About This Manual

    1 cm = 0.3937 in 1 ft = 0.3048 m 1 m = 3.281 ft 1 mi = 1.609 km 1 km = 0.622 mi Tab. 2.1: Conversion of units of length Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 6: Copyright And Disclaimer

    For information on getting permission for reprints and excerpts, contact Bosch Security Systems B.V.. The content and illustrations are subject to change without prior notice.
  • Page 7: Introduction

    One microphone input (Input 1) can be switched between microphone level and line level sensitivity. The other two microphone inputs can be connected with XLR or TRS type connectors. Phantom power can be switched on to provide power to condenser microphones. Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 8 ZONE CONTROL CLASS D ZONE 1~4 RELAY LIMITER 24VDC/100mA FILTER SUPPLY +24VDC 24V-PRIO +3V3/250mA B+ ON/OFF +5VDC B+ (50VDC/6A) +9VDC/100mA 230VAC SMPS +5VDC/1A +28VDC/1A +28VDC +24VDC/500mA Figure 3.1: Schematic overview of PLE-4MA240-CN 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 9: Controls, Connectors And Indicators

    Stereo signals are converted into mono. Volume control knob for selected music source input. Low tone (bass) control knob for mixed output. 13-16 Zone 1 to 4 selection buttons with LED indicator. Headphone socket. Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 10: Rear Panel

    24V DC output for loudspeaker volume control override. It is activated when there is a telephone or emergency input signal. Earth connection screw. Mains connector (3-pole) with fuse inside. Notice! The unit must be earthed. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 11: Installation

    If you install the unit in a 19" rack: – Ensure that it does not exceed the overheating temperature (+45°C ambient). – Use the included Bosch 19” mounting brackets. – Remove the 4 feet from the bottom of the unit. Figure 4.1: 19” bracket and rack mounting...
  • Page 12: Connections

    For safety reasons, the volume of the emergency announcement or signal cannot be set to zero. The master volume control setting (6) does not influence the volume setting of the emergency announcement or signal. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 13: Music Source Inputs

    (11) of zones 1, 2, 3 and/or 4 at the rear of the unit. Connect the loudspeakers in parallel and check the loudspeaker polarity for in-phase connection. The summed loudspeaker power should not exceed the rated amplifier output power. Figure 5.1: Connecting loudspeakers Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 14: Configuration

    • a chime will sound, if selected. • the music and other mic inputs will be reduced in volume to the level set by the ducking level control knob. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 15: Pin Settings And Labeling

    Carefully insert a small screwdriver into the cut-out at the bottom of the plastic cover. Gently lift the cover, and bend it in the middle. Take care not to force the cover or the front panel. To reattach the plastic covers with paper labels: Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 16 Pick up the cover, and then bend it slightly in the middle by hand. Fit the cover into the slot at the front of the unit, and then gently release the cover, making sure that the paper label stays in place. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 17: Operation

    Output control 7.5.1 Zone selection Use the zone selection buttons (13 to 16) to route the music/microphone, line mix from the amplifier output to loudspeaker zone 1, 2, 3 and/or 4. Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 18: Master Volume Control

    7.5.2 Master volume control Use the master volume control knob (6) to collectively control the sound level of all outputs, except the emergency announcement/signal. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 19: Troubleshooting

    Customer service If a fault cannot be resolved, please contact your supplier or system integrator, or go directly to your Bosch representative. Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 20: Maintenance

    Periodically check: – All cable connections for corrosion and the screw terminals to make sure that they have not become loosened. – The ground (Protective Earth) connection of the unit. 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 21: Technical Data

    60dB Headroom 25dB Phantom power supply 18VDC Music input Aux 1-2 Cinch, stereo converted to mono Aux 3 3.5mm mini-TRS; stereo converted to mono Sensitivity 200mV +1/-3dB Impedance 30 kOhm Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 22 Mounting Stand-alone, 19" rack Color Charcoal Weight (net) Approx. 5 kg Environmental Operating temperature -10 ºC to +45 ºC Storage temperature -40 ºC to +70 ºC Relative humidity <95% 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 23 PLENA Mixer amplifier, 4-zone, 240W Technical data | Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |...
  • Page 24 | Technical data PLENA Mixer amplifier, 4-zone, 240W 2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
  • Page 26 Bosch Security Systems B.V. Torenallee 49 5617 BA Eindhoven Netherlands www.boschsecurity.com © Bosch Security Systems B.V., 2019...

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Ple-4ma240-cn