TOA m-900mk2 Specification Guide

THE TOA 900 SERIES are widely
recognized as the industry standard
in installed sound system amplifi-
cation. When reliability and per-
formance are critical – such as in
paging and music distribution for
airport, hospital, and industrial
sound systems – you can count on
the TOA 900 Series to perform
consistently, day-in and day-out.

The M-900MK2 Mixer/Pre-amplifier
is engineered for high performance
with wide frequency response,
very low noise and distortion,
and excellent output regulation.
Eight module slots allows you to
easily configure custom configu-
rations using TOA plug-in modules
with an extensive array of features
and connector types. With the
rear-panel Bridge In/Out jack, you
can increase the input capacity by
connecting a second mixer or
mixer/amplifier.  Outputs include
a balanced, transformer-isolated,
line-level output for connection
to an external amplifier and an
unbalanced auxiliary output.

Multiple paging priorities are
easily configured using optional
mute-type modules activated by
external switch-closure or mute-
send modules. Other features
include bass/treble controls and
remote master volume terminals. 

The M-900MK2 is UL and cUL
Listed and carries a five year 
warranty.

 

amplifier for paging, background/ 
foreground music distribution and 
music/messaging-on-hold.

 

Engineered for High Performance 
with wide frequency response, very 
low noise and distortion, and excel-
lent output regulation. 

Eight Module Slots accept any combi-
nation of TOA plug-in modules for cus-
tom system configurations. 

Balanced, Transformer-Isolated 
Output with selectable impedance, 
screw terminal connector and protec-
tive cover plate.

Dual Mute Bus permits multiple levels
of paging priority using optional 
mute-type modules. 

External Mute Terminals for activating
mute function with external switch- 
closure.

Remote Master Volume Terminals for 
control with an external 10k ohm 
linear-taper potentiometer. 

Bass/Treble Tone Controls with tone 
defeat switch.

Auxiliary Output for connecting an 
external mixer or recording device. 

Bridging Input/Output for input 
expansion or recording device.

Normal, Clip, Power, Protect, and 
Signal Indicators provide unit status. 

Rear Panel AC Convenience Outlet for
powering external equipment.

Turn-On Delay disconnects output 
during power-up.

Over-current and Thermal Protection 
Circuitry prevents potential damage 
from overload, short-circuit or over-
heating. 

Plug-in Modules (see individual module specifications)

Rack-mount Kit (2 RU)

Perforated Rack Panel (2 RU)

Volume Control Security Knob

900 Series Module Guide available from http://www.toaelectronics.com