What to do if Bosch Conference System call station microphone activates without pressing the PTT button?
If the microphone on your Bosch Conference System call station activates without you pressing the PTT button, it's likely because multiple call stations have been assigned the same ID. To resolve this, change the call stations to have unique IDs.
What to do if Bosch Conference System rack units are not found in target search?
If Bosch Conference System rack units are not found during a target search, the issue might be due to disconnected Ethernet cables, the unit(s) or router not being powered on, or the PC not being connected to the network. Check that all units are connected to power, ensure the cabling is correctly connected, and verify that the PC is connected to the network.
What to do if Bosch Conference System call stations or wall control panels do not work and lights keep flashing?
If the call stations or wall control panels of your Bosch Conference System aren't working and the lights are flashing, the DSP matrix mixer might not be able to configure the unit. Ensure that all cables in the cable run use the correct CAT?5 pin configuration and that no crossover cables are used.
Why Bosch PLM-4P220-US Conference System call stations or wall control panels LED keep rotating?
If the LEDs on your Bosch Conference System call stations or wall control panels are continuously rotating, it indicates that the RS485 ID cannot be identified. Check that the switches are fully switched to the appropriate positions and reset power to the unit. Also, ensure that the CAT?5 cable is not damaged. You may also check the RS485 status using the latest version of PC GUI under "Device > RS485 device status".
What to do if the Bosch Conference System call station is activated but no announcement comes through?
If your Bosch Conference System call station activates but no announcement is heard, several factors could be at play: the unit might have just been turned on, a chime may be programmed to play first, the announcement level might be insufficient for the selected zone, or the user isn't speaking loudly enough. To troubleshoot, wait 15 seconds for the unit to be identified by the DSP matrix mixer, ensure the LEDs turn green before speaking (or deactivate the chime via the GUI), verify all call station levels are appropriately set and mute is not activated within the GUI, and speak slowly and clearly towards the microphone.
Why Bosch Conference System amplifier fault LED flashes quickly?
If the fault LED on your Bosch Conference System amplifier flashes quickly for about 30 seconds, it signals a thermal error on the channel. The channel will be reactivated automatically once it has cooled down.
Why Bosch PLM-4P220-US Conference System wall control panel volume control needs two button presses to increase the LED indicator?
The Bosch Conference System wall control panel's volume control requires two button presses to increase the LED indicator because the LEDs only indicate +/-6dB steps, while the up/down arrows adjust the volume in 3dB steps. The unit is designed to affect the audio at 3dB with each button press. Listen to the audio through the PA system to confirm this.
What does it mean when the fault LEDs flash slowly on Bosch PLM-4P220-US amplifier?
If the fault LEDs on your Bosch Conference System amplifier flash slowly, it indicates that the PSU has failed or thermally cut out. Send immediately for service and/or contact the Bosch authorized dealer or installer for assistance.
Guides through the installation process for the PC GUI configuration software.
Details how to set individual IDs for call stations using the 3-way DIP switch.
Explains DIP switch settings for wall control panels to assign IDs and functions.
Instructions for using the PC GUI for DSP matrix mixer setup and control.
Guide to configuring amplifier DSP features and settings using the PC GUI.
Initial steps for powering up and starting the PLENA matrix system correctly.
Explains the function, controls, and operational readiness of the call station.
Step-by-step guide to making announcements using the call station's interface.
Details the operation of the wall control panel for source selection and volume control.
Explains the operation and setup of the DSP amplifier, standalone or connected.
Using the PC GUI for amplifier operation, configuration, and DSP features.
Overview of the DSP matrix mixer's controls, indicators, and necessary connections.
Using the PC GUI to operate and configure the DSP matrix mixer system.
Solves issues with devices not powering on or showing illuminated LEDs.
Addresses problems with no sound output from the DSP matrix mixer or amplifier.
Diagnoses and resolves issues causing distorted or unusual audio output.
Troubleshoots persistent red fault lights on amplifiers, often indicating a fault.
Diagnoses slow flashing fault LEDs, often indicating PSU issues or thermal protection.
Guides through the installation process for the PC GUI configuration software.
Details how to set individual IDs for call stations using the 3-way DIP switch.
Explains DIP switch settings for wall control panels to assign IDs and functions.
Instructions for using the PC GUI for DSP matrix mixer setup and control.
Guide to configuring amplifier DSP features and settings using the PC GUI.
Initial steps for powering up and starting the PLENA matrix system correctly.
Explains the function, controls, and operational readiness of the call station.
Step-by-step guide to making announcements using the call station's interface.
Details the operation of the wall control panel for source selection and volume control.
Explains the operation and setup of the DSP amplifier, standalone or connected.
Using the PC GUI for amplifier operation, configuration, and DSP features.
Overview of the DSP matrix mixer's controls, indicators, and necessary connections.
Using the PC GUI to operate and configure the DSP matrix mixer system.
Solves issues with devices not powering on or showing illuminated LEDs.
Addresses problems with no sound output from the DSP matrix mixer or amplifier.
Diagnoses and resolves issues causing distorted or unusual audio output.
Troubleshoots persistent red fault lights on amplifiers, often indicating a fault.
Diagnoses slow flashing fault LEDs, often indicating PSU issues or thermal protection.
General| RMS Output Power | 220 W |
|---|---|
| Number of Channels | 4 |
| THD at rated power | < 0.5 % |
| Power Supply | 100-240 VAC, 50/60 Hz |
| Color | Black |
| Load Impedance | 4 Ohms |
| Frequency Response | 50Hz - 20kHz |
| Dimensions (H x W x D) | 88 x 483 x 400 mm |
| Connection Type | XLR |
| Sensitivity | Not applicable (Amplifier only) |
| Impedance (Microphone) | Not applicable (Amplifier only) |
| Weight (Microphone) | Not applicable (Amplifier only) |
| Dimensions (Microphone) | Not applicable (Amplifier only) |
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