BG-1015 / BG-1030 / BG-1060 / BG-1120
The mixer/amplifier shall have the capability to control and mix a minimum of five input signals
and deliver an audio output of 15 W / 30 W / 60 W / 120 W. Mixer inputs shall include four built-in
inputs: Microphone (MIC), Telephone (TEL), Auxiliary (AUX) and Program (PGM); and one
modular input, compatible with TOA plug-in modules. The TOA plug-in accessory modules
designed for use with the mixer/amplifier shall utilize the latest in surface mount component
technology and shall include microphone, line and special function models.

Specifications shall be equal to the following: Frequency response: 50 to 20k Hz (+/- 3 dB). THD:
less than 0.05% at 1k Hz at rated output. Output regulation: less than 2 dB, no load to full load.
Dynamic range: MIC: 60 dB, TEL: 75 dB, PGM: 75 dB, AUX: 75 dB as measured at 20 - 20k Hz,
with tone controls centered.

The MIC input shall be electronically balanced with -60 dBV sensitivity, 600 ohm input
impedance, switchable 24 VDC phantom power and screw-terminal connector. The TEL input
shall be suitable for a telephone system “page output” signal and shall be balanced, transformer-
isolated with -20 dBV sensitivity, switchable 600 or 10k ohm input impedance and screw-terminal
connector. The PGM input shall be electronically-balanced, -10 dBV, 10k ohm input impedance
with screw-terminal connector. The AUX input shall be unbalanced, -10 dBV, 47k ohm input
impedance with stereo-summing dual-RCA pin jacks. Optional internal input transformers shall be
available for the MIC and PGM inputs. The modular input shall be compatible with TOA input and
output plug-in modules. The module input shall be enclosed and isolated from all other
electronics within the chassis. The module shall be installed via integral guide rails and utilize a
fixed-mount edge connector with connections for +24 VDC, Earth Ground, Input, and Output. 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 mixer/amplifier shall include two separate Music-On-Hold (MOH) outputs: balanced,
transformer-isolated, 0 dBV, 600 ohm output impedance with screw-terminal connector; and 1 W
into an 8 ohm speaker load with screw-terminal connector. Both MOH outputs shall receive only
signals from the AUX, PGM and Module (BGM mode) inputs. The input channels shall be split
into two groups: PAGE and BGM (Background Music). The PAGE group shall include the MIC
and TEL inputs. The BGM group shall include the AUX and PGM inputs. The module slot shall be
assignable to either group via a rear-panel switch. PAGE inputs shall be routed only to the main
amplifier outputs and shall have Auto-Mute priority over the BGM inputs. BGM inputs shall be
routed to both the main amplifier outputs and the Music-On-Hold outputs and shall respond to the
Auto-Mute and/or External Mute (switch-closure) functions. T1he mixer/amplifier shall incorporate
an Auto-Mute function to allow the MIC, TEL and Module (PAGE mode) to override the AUX,
PGM and Module (BGM mode) without interrupting the MOH output. A rear panel Auto-Mute
SENSE control shall allow threshold adjustment of mute activation. Screw terminals for activating
the mute function with an external switch closure shall also be included with switchable dual
mode operation accessible from the rear panel. External Mute Mode “A” shall allow MIC, TEL and
Module (PAGE mode) to be normally ON with no change during the External Mute switch closure.
AUX, PGM, and Module (BGM mode) shall be normally ON and activate to OFF with switch
closure. External Mute Mode “B” shall allow MIC, TEL, Module (Page mode) to be normally OFF
and activate to ON with switch closure and AUX, PGM, Module (BGM mode) normally ON to
activate to OFF with switch closure.

The mixer/amplifier shall include a patching loop to provide access to the mixer output and power
amplifier input. The mixer output shall be 0 dBV, 600 ohms output impedance, unbalanced, RCA
pin jack. The power amplifier input shall be 0 dBV, 10k ohms input impedance, unbalanced, RCA
pin jack. Internal jumper settings shall include Phantom Power (MIC input); switchable TEL input
impedance (600/10k ohms); PAGE input Auto-Mute routing; and BGM input MOH/Zone routing.
The mixer/amplifier shall include rear panel Bass/Treble tone controls (100 and 10k Hz, +/- 10
dB). The tone controls shall affect only the PGM, AUX and Module (BGM mode) input signal
routed to the main amplifier output and shall not affect the MOH outputs. The front panel shall
include MIC, TEL, PGM, AUX and Module volume controls; Signal, Peak and Power LEDs; and
Power On/Off switch. Five volume control security knobs shall be included to prevent
unauthorized adjustment of front panel volume control settings.

The mixer/amplifier shall be capable of operation from a 120 VAC / 60 Hz line with rear-panel AC
circuit breaker. Power consumption at rated output shall be BG-1015: 50 W, BG-1030: 80 W, BG-
1060: 160 W, BG-1120: 260 W. The output shall be disconnected for approx. 3 seconds after
power is switched on. A rear panel AC receptacle (unswitched) with rear-panel AC circuit breaker
shall be included for connection of external equipment. The amplifier shall have short-circuit and
thermal protection circuitry with an automatic electronic output limiter. Dimensions (W x H x D)
shall be 10.39” x 4.23” x 11.02” (264 x 107.4 x 280 mm). Net weight shall be BG-1015: 9.92 lbs.
(4.5 kg), BG-1030: 10.58 lbs. (4.8 kg), BG-1060: 12.35 lbs. (5.6 kg), BG-1120: 14.11 lbs. (6.4 kg).
The front panel finish and material shall be black ABS resin. Case finish and material shall be
black steel plate. The mixer/amplifier shall be rack-mountable and occupy two  standard 19" rack
spaces with optional rack-mounting brackets.

The mixer/amplifier shall be TOA model BG-1015 / BG-1030 / BG-1060 / BG-1120.
The rack-mount bracket shall be TOA model MB-1000.
The volume control security knob shall be TOA model YA-920.