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TOA BG-2120 CU 5-INPUT 120W MIXER AMPLIFIER SPEAKER OUTPUT 4OHM, 25V, OR 70V / INCLUDES MOH OUTPUT

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Part Number: BG-2120 CU

The TOA BG-2120 is a high-quality 120W mixer amplifier designed for paging, background music, and general audio distribution in commercial settings such as retail, restaurants, schools, and offices. This 5-input mixer amplifier features 2 balanced mic/line inputs with phantom power, 1 unbalanced line input, 1 telephone paging input, and 1 module input slot compatible with TOA’s expansion modules. Its built-in 120-watt power amplifier supports both low impedance (4?) and constant voltage outputs (25V, 70V, 100V), offering flexibility for a wide range of speaker systems. The BG-2120 also includes tone controls, priority muting, and remote volume control capability, making it an excellent fit for integrators designing scalable, reliable, and cost-effective audio systems. Compact and rack-mountable, the BG-2120 is engineered for long-term durability and clear, uninterrupted audio in installed sound environments.

Power Source

120 V AC, 60 Hz

Rated Output

120 W

Power Consumption

265 W (rated output), 120 W (based on cULus standards)

Frequency Response

50 Hz - 20 kHz

Total Harmonic Distortion

0.5 % or less, at 1 kHz, rated output

Input

Mic: -60 dB*, 600 O, electronically balanced, removable terminal block
Line 1: -10 dB*/ TEL: -20 dB*
Line 1/TEL selectable, 10 kO, electronically balanced, removable terminal block
Line 2, 3: -10 dB*, 10 kO, unbalanced, removable terminal block and RCA jacks
Module

Output

Speaker: 4 O, 25 V (5.2 O), 70 V (42 O), balanced, removable terminal block
MOH: 0 dB*, 600 O, balanced, removable terminal block
Line: 0 dB*, 600 O, unbalanced, removable terminal block

Output Regulation

2 dB or less, no load to full load (1 kHz)

Phantom Power

On/Off switch for Mic, +24 V DC

S/N Ratio

Mic: 60 dB or more, Line 1/TEL, Line 2, 3, Module: 75 dB or more
(Band Pass: 20 Hz - 20 kHz, Tone Controls: Centered)

Muting

Manual mute/Automatic mute

Tone Control

Bass: ±10 dB at 100 Hz, Treble: ±10 dB at 10 kHz

Control

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 out gain control,
Mute control (Manual mute), 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 switch (Mic, Line 1/TEL, Line 2, 3, Module),
MOH assign switch (Mic, Line 1/TEL, Line 2, 3, Module), Power ON/OFF switch

Indicator

Power LED, Signal level LED, Peak LED

Operating temperature

0 °C to +40 °C (32 °F to 104 °F)

Operating Humidity

35 % to 80 %RH (no condensation)

Finish

Panel: ABS resin, black
Case: Steel plate, black, paint

Dimensions

264 (W) × 94.3 (H) × 267.3 (D) mm (10.39" × 3.71" × 10.52")

Weight

6 kg (13.23 lb)

Accessory

Volume control cover: YA-920 ……5, Removable terminal plug (2 pins) ……4,
Removable terminal plug (3 pins) ……2, Removable terminal plug (4 pins) ……1,
Removable terminal plug (5 pins) ……1

Option

Rack mounting bracket: MB-1000

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