Bosch Plena – PLE‑1MExx0‑xx Plena Mixer Amplifier

Key Features

• Versatile Inputs: 4 microphone/line inputs plus a dedicated music source input.
• Priority Control: Input 1 with PTT functionality and a 2-tone chime.
• Announcement-Only Output: Includes 3-wire volume override for priority zones.
• Power Options: Available in 60 W, 120 W, and 240 W models.
• Ease of Use: Simple controls, with professional features at an affordable price.

Overview

The Bosch Plena Economy PLE‑1MExx0‑xx Mixer Amplifier is a reliable, user-friendly solution for public address and background music systems. Offering clear audio for both announcements and music, it combines robust performance with intuitive features. These amplifiers are ideal for installations requiring cost-effective, high-quality sound distribution.

Functions

Microphone and Line Inputs:

• 4 mic/line inputs with selectable sensitivity (microphone or line level).
• Balanced/unbalanced inputs with phantom power for condenser microphones.
• Input 1 includes priority control via push-to-talk (PTT) with an optional 2-tone chime.

Music Input:

• Dedicated music input with independent volume control for connecting external audio sources.

Customizable Settings:

• Detachable labels for easy identification of inputs and controls.
• Color-coded pins to mark preset levels, making it simple for different users to adjust settings quickly.

Output Options:

• Available in 60 W, 120 W, and 240 W output power models.
• Supports 100 V (or 70 V for US versions) constant voltage systems and 4-ohm low impedance setups.
• Dedicated call-only output for priority announcements with 3-wire volume override capability.

Reliable Operation:

• Integrated limiter to prevent signal overload.
• LED VU meter for real-time monitoring of master output levels.
• Headphone socket for direct monitoring of the mixer output.

Technical Specifications

Electrical:

• Power Supply:
  • EU: 230 VAC ±10%, 50/60 Hz.
  • US: 120 VAC ±10%, 50/60 Hz.
  • CN: 220 VAC ±10%, 50/60 Hz.
• Inrush Current:
  • 60 W: 5–10 A (region-dependent).
  • 120 W: 10–20 A.
  • 240 W: 12–24 A.
• Power Consumption:
  • 60 W: 200 VA.
  • 120 W: 400 VA.
  • 240 W: 800 VA.

Performance:

• Frequency Response:
  • Line: 60 Hz – 20 kHz (+1/-3 dB).
  • Mic: 70 Hz – 20 kHz (+1/-3 dB).
• Distortion: <1% @ rated power, 1 kHz.
• Bass/Treble Control: ±8 dB.
• Signal-to-Noise Ratio (S/N): >63 dB (mic); >75 dB (music input).

Inputs and Outputs:

• Mic/Line Inputs (4): Balanced connections with phantom power.
  • Input 1: 5-pin Euro connector with PTT priority.
  • Inputs 2-4: 3-pin or TRS jack.
• Music Input: Stereo cinch connector, converted to mono.
• Loudspeaker Outputs:
  • 100 V (or 70 V for US versions) and 4-ohm outputs.
  • Rated Power: 60 W, 120 W, or 240 W (model-specific).

Mechanical:

• Dimensions: 100 x 430 x 270 mm (19” rack size, 2U).
• Weight: 6.5 – 10.5 kg, depending on model.
• Color: Charcoal.

Environmental:

• Operating Temperature: -10 ºC to +45 ºC.
• Storage Temperature: -40 ºC to +70 ºC.
• Humidity: <95%.

Parts Included

• 1 Plena Mixer Amplifier (PLE‑1MExx0‑xx).
• 1 Power Cord.
• 1 Manual.
• 1 Plena Easy Line CD.

Certifications

• Safety: EN 60065.
• EMC Emission: EN 55103‑1.
• EMC Immunity: EN 55103‑2.