TOA Electronics BG‑2120 Mixer Amplifier – 120W, 5‑Input Commercial BGM/Paging Amplifier

Mixer Amplifier – BG-2120

The TOA BG‑2120 is a high‑power 120 W, 5‑input mixer amplifier designed for background music (BGM), paging, and general announcements in commercial spaces such as bars, retail stores, banquet rooms, and hospitality environments. As part of the BG‑2000 Series, it includes an MOH (Music‑on‑Hold) output and supports 2‑channel broadcast when paired with optional booster amplifiers such as the BA‑235 (35 W) or BA‑260 (60 W).

Key Features

• Flexible Input Assignment: Each input can be freely routed to the MOH output.
• Automatic or Manual Mute: Supports priority paging with adjustable mute behavior.
• Rear DIP Switch Configuration: Simplified settings for input assignment, muting, TEL/LINE level, and phantom power.
• Protected Front Controls: Recessed bass and treble knobs with supplied volume‑control covers to prevent accidental adjustments.
• Installer‑Friendly Connections: Removable terminal blocks and RCA jacks for Lines 2 and 3 simplify installation and servicing.
• Remote Volume Capability: Allows external control of speaker output levels.

Specifications

Power

• Power Source: 120 V AC, 60 Hz
• Rated Output: 120 W
• Power Consumption: 265 W (rated output), 120 W (cULus)

Audio Performance

• Frequency Response: 50 Hz – 20 kHz
• Total Harmonic Distortion: 0.5% or less at 1 kHz (rated output)
• Tone Control: Bass ±10 dB at 100 Hz; Treble ±10 dB at 10 kHz
• Signal‑to‑Noise Ratio:
  • Mic: 60 dB or more
  • Line 1/TEL, Line 2, Line 3, Module: 75 dB or more
  • (20 Hz – 20 kHz, tone controls centered)

Inputs

• Mic: –60 dB, 600 Ω, electronically balanced, removable terminal block
• Line 1 / TEL: –10 dB (Line) / –20 dB (TEL), selectable, 10 kΩ, electronically balanced, removable terminal block
• Line 2 & Line 3: –10 dB, 10 kΩ, unbalanced, removable terminal block and RCA jacks
• Module Slot: Accepts any TOA 900 Series input module

Outputs

• Speaker Output: 4 Ω, 25 V (5.2 Ω), 70 V (42 Ω), balanced, removable terminal block
• MOH Output: 0 dB, 600 Ω, balanced, removable terminal block
• Line Output: 0 dB, 600 Ω, unbalanced, removable terminal block
• Output Regulation: 2 dB or less (no load to full load at 1 kHz)

Phantom Power

• Microphone Input: +24 V DC, switchable

Muting

• Manual mute
• Automatic mute for Mic, Line 1/TEL, and Module inputs

Controls

• Mic gain control
• Line 1/TEL gain control
• Line 2 gain control
• Line 3 gain control
• Module gain control
• Bass tone control
• Treble tone control
• MOH output gain control
• Manual mute control
• Remote volume control
• Mute sense control
• Line 1/TEL selector switch
• Phantom power switch (Mic)
• Auto mute switch (Mic, Line 1/TEL, Module)
• Mute receive switches (Mic, Line 1/TEL, Line 2, Line 3, Module)
• MOH assign switches (Mic, Line 1/TEL, Line 2, Line 3, Module)
• Power ON/OFF switch

Indicators

• Power LED
• Signal Level LED
• Peak LED

Environmental

• Operating Temperature: 0°C to +40°C (32°F to 104°F)
• Operating Humidity: 35% to 80% RH (no condensation)

Construction

• Panel: ABS resin, black
• Case: Steel plate, black, painted finish
• Dimensions: 264 (W) × 94.3 (H) × 267.3 (D) mm (10.39 × 3.71 × 10.52")
• Weight: 6 kg (13.23 lb)

Included Accessories

• Volume control covers: YA‑920 × 5
• Removable terminal plug (2‑pin) × 4
• Removable terminal plug (3‑pin) × 2
• Removable terminal plug (4‑pin) × 1
• Removable terminal plug (5‑pin) × 1