BG-115 / BG-130
The mixer/amplifier shall control and mix up to three input signals and deliver an audio output of
15 W / 30 W. Frequency response shall be 50 to 20k Hz (+ 3 dB) with less than 0.5% THD at
rated output. The output regulation shall be less than 2 dB, no load to full load. It shall be capable
of operation from a 110 / 120 VAC 50/60 Hz line. The mixer/amplifier shall have a switch-
selectable MIC/TEL input to accept either low impedance microphone or telephone paging
signals with -60 / -20 dBV sensitivity. The MIC/TEL input shall include a screw-terminal type
connector with a built-in matching transformer. The MIC input impedance shall be 600 ohms and
the TEL input impedance shall be 600 / 10k ohms. The mixer/amplifier shall include a Program
(PGM) input, electronically-balanced, -10 dBV, with screw-terminal connector and an Auxiliary
(AUX) input, unbalanced, -10 dBV, with dual-RCA pin jacks. The AUX and PGM input impedance
shall each be 10k ohms. The mixer/amplifier shall include an adjustable Music-On-Hold (MOH)
output with a maximum output level of 1 W at 8 ohms. Internal jumpers shall allow disconnection
of the PGM and/or AUX channels from the MOH (and main) outputs. The mixer/amplifier shall
include 25 V, 70.7 V and 4 ohm transformer-isolated outputs with screw-terminal type
connections and protective speaker terminal cover plate. The amplifier shall provide short-circuit
and thermal protection. The mixer/amplifier shall incorporate an Auto-Mute function for MIC/TEL
paging over-ride of AUX/PGM without interrupting the MOH output. A rear panel Auto-Mute
SENSE control will allow threshold adjustment of mute activation. Screw terminals for activating
the mute function with external switch closure shall also be included. An internal jumper shall
allow assignment of MIC/TEL and/or AUX/PGM to respond to the mute function activation. The
mixer/amplifier front panel shall include MIC/TEL and PGM volume controls and Signal, Peak and
Power LEDs. The mixer/amplifier rear panel shall include AUX volume control and Bass/Treble
tone controls (100 and 10k Hz, + 10 dB). The tone controls shall not affect the MOH output.

A rear panel AC receptacle (unswitched) shall be included for connection of external equipment.
Dimensions (W x H x D) shall be 8.27" x 10.87" x 3.66" (210 x 276 x 93 mm) with feet or 3.48"
(88.4 mm) H without feet. Net weight shall be BG-115: 7.28 lbs. (3.3 kg); BG-130: 8.60 lbs. (3.9
kg). Front panel finish and material shall be black ABS resin and case finish (and material) shall
be black sheet steel.

The mixer/amplifier shall be TOA model BG-115 / BG-130.
The rack-mount bracket shall be TOA model MB-25B-BK.
The rack-mount bracket (two units) shall be TOA model MB-25B-J.
The wall-mount bracket shall be TOA model WB-900B.