Toa M-1212E, M-1264 Specifications

TOA PROFESSIONAL SOUND SYSTEM

STEREO-MIXER

M-1264/M-1212E

Rack Mount

Stereo Mixers

M-1264

FEATURES

1. Matrix mixing of mono and stereo inputs to up to six
separate outputs.

2. four true stereo inputs--one input knob controls both
left and right channels.

3. Mic/Line inputs with a built in compressor on each to
prevent input/output clipping.

4. High pass filter on mic inputs for speech applications.

5. Remote control of the Stereo and Group outputs using
momentary up/down switch contacts.

M-1212E

6. Connectors include XLR for balanced in/outs and, RCA
and 1/4” for unbalanced in and outs.

7. Back panel switch for using either stereo output as a
sub-group or the Group out as additional sub input to
the Stereo output.

8. Front panel headphone jack.

9. Occupies only 2 rack spaces.

DESCRIPTION

TOA’s M-1264 is a true stereo, matrix mixer only 2 rack
spaces high, that is economical and simple to operate yet
has a great deal of versatility. Its many unique features and
functions solve some long-standing design problems in a
variety of commercial systems that require mixing and
matrixing a combination of mono and ever increasing
number of stereo audio sources to single and multiple
outputs. Sometimes stereo sources need to be summed to
mono and mono sources fed to L/R outputs. These sources
may need to feed separately controlled, multiple outputs,
some stereo and some mono, that often require different
combinations or selections of the inputs. The M-1264 can
handle all of this and more. The companion M-1212E, also
2 rack spaces, is a simplified version of the M-1264,
intended as an expander for the M-1264, but it can also be
used as a stand alone, matrix mixer. Both are backed by

TOA’s long tradition of reliability and performance.
Essentially the M-1264, in its 2 rack spaces, can be easily

set up to function as anything from a single mono or stereo
mixer to up to FIVE independent mono mixers (with a sixth
somewhat dependent mixer). For example, in a health club
the M-1264 can simultaneously and separately control:
stereo disco in the aerobics room, pop music in the weight
room, classical in the pool and the easy listening station in
the locker rooms and reception, plus selective paging to all
areas, including an emergency page mic from each
location back to a speaker in the reception desk.

This kind of multi-tasking capability, in a single unit, is

perfect for a variety of systems including boardrooms,

conference rooms, discos, health clubs, restaurants, offices,

background music systems, music clubs, and hotel
systems. For example it is a great mixer for multi-media
portable systems or as an outboard mixer for touring
systems, taking up only one input on the main console for 4
stereo sources plus six additional mic inputs. In hohel
systems, it can function as an economical, manually
controlled ballroom combiner for up to four rooms. It is
ideal for multi-zone background music/paging systems.
You can even use it to set up four zones of mix-minus-one
microphone mixing, with program and selected mic inputs

to all zones, plus a fifth output with a sum of all the inputs.
The M-1264 has 5 sets of outputs, each with their own level

control: Stereo main, stereo Group, mono Aux, stereo Cue/
Monitor, and a Sum output (provides a mono mix of the
main Stereo output). The Stereo and Group, while still
providing their own output signals, can be alternately
assigned to each other as a sub-group using a rear panel
switch. The Cue/Monitor output can be used for monitoring
the Stereo output or it can function as an independent mixer

using the cue bus, or it can be used as a L/R mono Cue to
pre-listen to any combination of inputs-a must for discos
or live mixing.

The M-1264 has 11 sets of inputs: 6 electronically

balanced, mono Mic/Line inputs, 4 unbalanced, stereo/
mono Line inputs and a stereo/mono “sub” line input that
feeds the Stereo mixing bus. Each of the first 10 inputs is
controlled by a single front panel knob. The Mic/Line
(using a Left/Center/Right switch) and Line inputs are
always assigned to either the Group or Stereo outputs and
can be independently assigned to the Aux and Cue
outputs. All inputs have an On/Off switch that shuts off the
signal to the Stereo and Aux outputs but not the signal
assigned to the Cue output. A bonus feature is that a
mono source plugged into only the right channel of any
stereo input is automatically fed to the left input as well.

Each Mic/Line input has a built in automatic compressor
with a front panel indicator that activates about 3dB below
internal clipping. This not only serves as an excessive
signal indicator but can virtually eliminate input and output

overloads. These inputs also feature switchable phantom
power and a switchable high pass filter in microphone
mode to reduce directional microphone proximity effects.
Optional input transformers are available if needed for long
wire runs or ground isolation.

More features of the M-1264 include up/down remote
control (using momentary contact switches) of the
motorized Stereo and Group output volume controls.
There is even a ramped 5VDC output for a remote visual
level indicator. A front panel headphone jack is also
provided, fed from the Cue/Monitor output.

The companion M-1212E can be used as a stand-alone
mixer or sub-mixer. Its 12 Mic/Line inputs are identical to
the M-1264, with the same assignment capabilities.

It has six mix buses each feeding a line output, but without
output level controls: Stereo main, stereo Group, mono Aux
and mono Cue. Unlike the M-1264, there is no sub-group
switching for the stereo outputs or sub input. When used
as an expander, a supplied bus link cable allows linking
single or multiple M-1212E’s to an M-1264. When the units
are linked together, all the mix buses are connected and
therefore carry the same signal. In this way multiple
isolated outputs for each mix bus are available-one on
each of the linked units.

Both units are provided with a security cover and 19” rack
mount hardware.