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ARCHITECT’S AND ENGINEER’S SPECIFICATIONS
M-1264 Stereo Mixer
The mixer shall have six mono Mic/Line inputs, four Stereo/Mono Line
inputs and a stereo Sub (bus) input; Stereo Out, Stereo Group, Stereo
Monitor (mono in Cue mode) outputs; mono Sum and Auxiliary outputs.
The mixer shall have six mixing buses: L/R Stereo, L/R Group, Aux and
Cue. It shall incorporate all solid state circuitry. Stereo and Sum power
outputs shall be n4dB (m20dB) into a 600 ohm load,
electronically balanced at less than 0.15% THD Mic/Line input, 0.01%
THD Stereo/Mono Line inut at +4dB nominal output at 1kHz. Group,
Monitor and Auxiliary power outputs shall be similarly rated into a 1k
ohm load, unbalanced.
Nominal input sensitivity shall be: Mic/Line input 0.8mV/0.25V
1k/50k ohm input impedance, electronically balanced; Stereo/Mono
Line 0.25V, 50k ohm input impedance; stereo Sub 1.23V 10k ohm input
impedance, unbalanced. Gain shall be mic 64dB, line 14dB, Sub input
0dB all to Stereo Output. Hum and noise shall be at least 98dB below
nominal output (master volume at maximum, all other level controls
minimum) and 62dB below nominal rated output (master volume and one
mono input maximum), IHF-A. Frequency response shall be +0/-1.5dB
(ref. 1kHz) from 20Hz to 20kHz at any power up to rated output.
Each Mic/Line input shall p24V phantom power with an
internal On/Off switch. Each shall also have a built in compressor
circuit that activates at 3dB below maximum level with a “Soft Knee”
threshold and approximately a 10:1 limiting ratio. The circuit shall
protect the mixer from being driven into output clipping by excessive
input levels. The Mic/Line inputs unit shall accept optional input
(LT-101 10k: 10k ohms; LT-102 600:600 ohms) isolation transformers.
the transformers shall mount easily and securely inside the unit with the
machine screws provided. Electrical connection to the unit shall be
easily accomplished by means of flexible wires with locking connectors.
The front panel shall have: POWER On/Off switch; stereo PHONES
jack; ten input level controls; STEREO, GROUP, SUM, AUX and
MONITOR output level controls. STEREO and GROUP controls shall
be motorized and remotely controllable. Each Mic/Line input channel
hall have L/C/R (Left/Center/Right), GR/ST (Group/Stereo), AUX and
CUE assign switches. Each line input channel shall have GR/ST
Group/Stereo), AUX and CUE assign switches. Each input shall have a
combination channel On/Off switch indicator that when the channel is on
lights green for the mono inputs, yellow for stereo inputs and red when
the compressor circuit is activated (mono inputs only). The channel
On/Off switches shall not affect the CUE signal. The CUE shall
connect the selected channel’s signal to the cue bus and automatically
witch the monitor from the Stereo Output to the cue bus. The front
panel shall also have a POWER On and CUE Activated indicator.
The rear panel shall have an input level select switch for each Mic/Line
input for mic, line or mic HPF. There shall be a 4 position STEREO/
GROUP link switch for assigning: Stereo to Group, Group to Stereo Pre
(pre Stereo Output level), Group to Stereo Post (post Stereo Output
level) and Off. Both the Stereo and Group Outputs shall otherwise
function normally in any switch position.
The rear panel shall have the following: 6 XLR-F jacks for Mic/Line
puts, 4 pairs RCA type jacks for Stereo/Mono Line inputs; 1/4” TS
jacks for Sub inputs; XLR-M jacks for Stereo, and Sum outputs; 1/4”
TS jacks for group Aux and Monitor outputs: barrier strip type screw
terminals for Stereo and Group Output remote volume control that
shall use momentary switch closures for volume up/down functions;
terminals for each control that output 0 to +5VDC depending on
control position. A BUS LINK IN connector shall providing linking
of all mixing buses, plus the cue control bus, between a TOA M-1212E
Expansion Mixer and the M-1264. There shall be a fuse holder with a
replaceable AC mains fuse.
AC line mains shall be 50/60Hz. Power consumption at rated output
shall be 25W (28W 220/240V). The mixer shall be enclosed in a
durable, painted, black, 1mm (.04 in.) steel enclosure, mechanically
reinforced by a 2.0mm (0.08 in.) thick, black anodized, aluminum front
panel. Overall dimensions shall be 482.6W x 88.4H x 311.8D mm
(19.0W x 3.48H x 12.16D in.). Weight shall be 5.2kg (11.5lbs.).
Standard E.I.A. equipment rack mounting and a smoked acryl security
M-1212E Stereo Mixer
The mixer preamplifier shall operate as a stand alone device
or
as an expansion mixer frame for the TOA M-1264 Stereo Mixer.
The mixer shall have twelve mono Mic/Line inputs; Stereo
Out,
stereo Group, mono Cue and Auxiliary outputs. The mixer shall
have six mixing buses: L/R Stereo, L/R Group, Aux and Cue.
It
shall incorporate all solid state circuitry. Stereo, Group Aux
and
Cue power outputs shall be n4dB (m20dB)
into a 1k ohm load, unbalanced at less than 0.15% THD Mic/Line
input at +4dB nominal output at 1kHz.
Nominal input sensitivity shall be: Mic/Line input 0.8mV/0.25V
1k/
50k ohm input impedance, electronically balanced. Gain shall
be
mic 64dB, line 14dB to any output. Hum and noise shall be
at
least 94dB below rated nominal output (all level controls
minimum) and 62dB below nominal rated output (one mono
input
maximum), IHF-A. Frequency response shall be +0/-1.5dB (ref.
1kHz) from 20Hz to 20kHz at any power up to rated output.
Each Mic/Line input shall p24V phantom power with
an
internal On/Off switch. Each shall also have a built in
compressor circuit that activates at 3dB below maximum level
with a “Soft Knee” threshold and approximately a 10:1 limiting
ratio. The circuit shall protect the mixer from being driven into
output clipping by excessive input levels. The Mic/Line input
unit shall accept optional input (LT-101 10k:10k ohms; LT-102
600:600 ohms) isolation transformers. The transformers shall
mount easily and securely inside the unit with the machine
screws provided. Electrical connection to the unit shall be easily
accomplished by means of flexible wires with locking connectors.
The front panel shall have: POWER On/Off switch and twelve
input level controls. Each input channel shall have L/C/R (Left/
Center/Right), GR/ST (Group/Stereo), AUX and CUE assign
switches. Each input shall have a combination channel On/Off
switch indicator that, when the channel is on, lights green or
lights red when the compressor circuit is activated. The channel
On/Off switches shall not affect the CUE signal. The front panel
shall also have a POWER On indicator.
The rear panel shall have the following: an input level select
switch for each Mic/Line input for MIC, LINE or MIC HPF;
12 XLR-F jacks for Mic/Line inputs; 1/4” TS jacks for Stereo,
Group Aux and Cue outputs. BUS LINK IN and OUT connectors
shall provide linking of all mixing buses plus the cue control
bus
between additional TOA M-1212E’s or the TOA M-1264.
There shall be a fuse holder with a replaceable AC mains fuse.
AC line mains shall be 50/60Hz. Power consumption at rated
output shall be 26W (28W 220/240V). The mixer shall be
enclosed in a durable, painted, black, 1mm (.04 in.) steel
enclosure mechanically reinforced by a 2.0mm (0.08 in.) thick,
black anodized, aluminum front panel. Overall dimensions shall
be 482.6W x 88.4H x 311.8D mm (19.0W x 3.48H x 12.16D in.).
Weight shall be 5.2kg (11.5lbs.). Standard E.I.A. equipment
rack
mounting, a 1m Bus Link Cable and a smoked acryl security
cover shall be provided.
The mixer shall be the TOA model M-1212E.
NOTE. 0dB=0.775V RMS