TOA Electronics BG‑235 CU Mixer Amplifier – 35W, 3‑Input Commercial BGM/Paging Amplifier

Mixer Amplifier – BG-235

The TOA BG‑235 is a compact 35 W, three‑input mixer amplifier designed for background music (BGM) and general announcements in commercial environments such as bars, retail stores, and banquet rooms. Equipped with an MOH (Music‑on‑Hold) output, it supports 2‑channel broadcasting when paired with optional booster amplifiers like the BA‑235 (35 W) or BA‑260 (60 W). Its flexible configuration options and reliable performance make it ideal for small to mid‑scale installations.

Key Features

• Easy Installation: All inputs and outputs feature removable terminal blocks for fast wiring and maintenance.
• Flexible Input Options: Three line inputs, with Input 1 switchable between mic and line level; Inputs 2 and 3 equipped with both terminal block and RCA jacks.
• Rear DIP Switch Configuration: Quickly set muting behavior, MOH assignments, and Mic/Line level using rear‑mounted DIP switches.
• Tamper‑Proof Tone Control: Recessed bass and treble controls protect system settings from accidental adjustment.
• Auto/Manual Muting: Adjustable sensitivity ensures proper paging priority and ducking.
• Zone 2 / MOH Output: Supports 2‑channel broadcast and expansion when paired with BA‑200 Series amplifiers.
• Flexible Routing: Any of the three inputs can be assigned to the MOH/Zone 2 output.

Specifications

Power

• Power Source: 120 V AC, 60 Hz
• Rated Output: 35 W
• Power Consumption: 90 W (rated output), 55 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/Line 1: 60 dB or more
  • Line 2 & 3: 80 dB or more
  • (20 Hz – 20 kHz, tone controls centered)

Inputs

• Mic / Line 1: –60 dB (Mic) / –10 dB (Line), 600 Ω, electronically balanced,
  removable terminal block; Mic/Line selectable.
• Line 2 & Line 3: –10 dB, 10 kΩ, unbalanced,
  removable terminal block or RCA jack.

Outputs

• Speaker Output: 4 Ω, 25 V (18 Ω), 70 V (140 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: Within 2 dB (no load to full load at 1 kHz)

Muting

• Manual mute
• Automatic mute with adjustable sensitivity

Controls

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

Indicators

• Power LED
• Signal LED
• Peak LED

Environmental

• Operating Temperature: 0°C to +35°C (32°F to 95°F)
• Operating Humidity: 35% to 80% RH (no condensation)

Construction

• Panel: ABS resin, black
• Case: Steel plate, black, painted finish
• Dimensions: 210 (W) × 94.3 (H) × 265 (D) mm (8.27 × 3.71 × 10.43")
• Weight: 4 kg (8.82 lb)

Included Accessories

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