TOA a-503a 補足マニュアル

60/120 WATT 6-CHANNEL IN-WALL MIXER/
AMPLIFIERS
• Modular design allows fast and easy custom

configurations for unmatched flexibility

• Six module slots accept TOA plug-in modules,

expandable to eight slots with optional kit,
model WE-2

• 25 V, 70.7 V and 4 / 8 ohm speaker outputs
• Flush or surface-mount with optional back

boxes 

—

BX-9F (flush-mount) and BX-9S

(surface-mount)

• One-octave nine band equalizer
• High and low pass filters
• Compressor prevents overload and distortion
• Muting function for input priority override
• Bridging input/output for input expansion or

system combining

• Protection circuitry prevents potential damage

from overload, short-circuit and over-heating

• Five year warranty

30/60/120 WATT 6-CHANNEL MIXER/AMPLIFIERS
• Integrated mixer/amplifiers for sound reinforcement,

paging and background/foreground music distribution

• 25 V, 70.7 V and 4 ohm transformer-isolated speaker

outputs with screw terminal connector and protec-
tive cover plate

• Two low impedance microphone inputs, balanced,

transformer-isolated with XLR-F connectors
(expandable to 4)

• Three auxiliary line inputs, unbalanced with RCA

connectors

• Hi-z mic/phono input (switchable), unbalanced

with RCA/screw terminal connectors

• External mute terminals for switch closure override

of inputs 3-5 with adjustable mute depth

• Insert jacks for connecting external signal processor
• Booster and tape outputs for connecting external

equipment

• +24 VDC input for connection to external power source
• Protection circuitry prevents potential damage from

overload, short-circuit and overheating

• Five year warranty

15/30/60 WATT MOBILE MIXER/AMPLIFIERS
• Mobile mixer/amplifiers for remote applications
• 12 VDC powered
• Supports 4 or 8 ohm speaker loads
• Two microphone inputs and one auxiliary

input

• Handheld microphone included 

—

unidirec-

tional, dynamic-type with talk switch, 6’ cord
and mounting hardware

• Mounting hardware included 

—

mounts

under dashboard or into standard DIN-size
console cutout

• Five year warranty

300/450/600 WATT DUAL CHANNEL POWER AMPLIFIERS
• Stereo, bridged, and parallel output modes
• Electronically balanced screw-terminal and XLR input

connectors

• Optional input transformer available 

—

model lT-101

• Precision stepped attenuators, recessable to prevent

accidental setting changes (security covers included)

• Variable-speed fan for quiet, efficient cooling
• Advanced protection circuitry monitors voltage, cur-

rent and thermal levels to prevent potential damage
from overloads, short circuit, DC offset or over-heating

• In-rush current limiter prevents AC breaker overload

during system turn-on of multiple amplifiers

• Optional transformers for 25 volt / 70.7 volt applica-

tions: model MT-300M (200 W), MT-450M (300 W),
MT-600M (400 W)

• Five year warranty

TOA Electronics Amplifier Guide

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