Toa d 901 moduler

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DIGITAL MIXER

DESCHPHON

The D-901 Digital Mixer is perfect to take the important
audio role in AV»based presentation systems. The compact
unit features a modular design that allows configuring the unit as
requirements dictate as well as to expand its scope of operation.
Its 12 in/8 out capability allows use with various source
equipment and advanced functions include sophisticated
automixing, intelligent automatic feedback suppression, EQ,
memory presets as well as full remote control capability. D-901
modules include monaural and stereo input modules, line output
modules and a remote control module.

FEATURES

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0 Ready for any requirement.
The new TOA D-901 Digital Mixer is a fully modular, cost-
effective digital mixer featuring a 12-input, 8-bus, 8-output
channel configuration (12 x 8 matrix) with easy operation
that can be expanded as applications require.

0 All-in-one design.

The compact D-901 is just 3U-sized but incorporates several
of the most important functions. These include a digital
mixer, feedback suppression, auto mixing, parametric EQ,
compression, delay and echo. Its remarkable operational
scope allows it to do the work that conventionally requires
several different pieces of equipment, providing a cost-
effective solution that is perfect for any requirement.

0 Feedback suppressor.
This sophisticated and TOA proprietary function automati-
cally processes feedback at certain frequencies through
constant monitoring then automatically attenuates only the
precise problematic frequencies, keeping the audio sounding
natural.

0 Automatic mixing function
The D-901's automatic mixing function adjusts input level
automatically to make operating easier. It features smart
Number of Open Microphones (NOM) attenuation that sets
the gain for all microphone inputs according to the number
of microphone inputs utilized. This allows satisfactory levels
to be set without feedback problems. A "Ducker" function
operates when an input channel is open, to enable that
channel's priority to initiate the the low channel signal that will
attenuate the other channels.

0 Sound processing

As a full»featured digital mixer, the D-901 incorporates
several useful built-in functions to ensure maximum per-
formance without needing other equipment. A compressor
can be switched in to reduce the dynamic range between
the smallest and largest signals, preventing amplifier
clipping at high levels. The flexible crossover function allows
setting speaker crossover points and filter slopes to
optimize multichannel speaker systems. An overload
protection circuit will automatically activate to protect the
speakers from overload and distortion, helping to save
costs. Full equalization and filter setting configurations can
be saved in up to sixteen memories for instant recall. The
time delay function can be used to align remote speakers.

0 Ergonomic control layout

Convenient front panel controls and display make it easy to
perform all functions and confirm parameter settings without
requiring a PC. Another advantage is the ability to store up
to 16 sound parameter setting configurations in memory for
instant recall when required. These include crossover. EQ,
filter slope settings, time delay and other parameters.
Control settings can also be locked to prevent unauthorized
tampering.

0 Wide application scope and remote control ability.
The D-901 can be externally controlled with an external
signal trigger or the RS-232C port on the back panel which
enables the D-901 to easily interface with external equipment.

Note: The D7901's heatsinks and airoooling are located at the bottom of the
unit, requiring a perforated ventilation panel to placed directly below the unit
when radkrmounting is desired.

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The D-901 is a 19 rack-mounted (3U high) digital mixer
configured with 12 inputs, 8 buses, and 8 outputs. It
features signal processing functions necessary for
sound systems such as feedback suppression and
auto-mixing.

Modular construction permits flexible configuration of
inputs and outputs, from 2-IN/4-OUT to 12-IN/8-OUT
systems.

All functional parameters can be set at the unit. Settings
can be stored in the unit's internal memory as preset
memory" and can be recalled using the front panel-
mounted operation keys.

I SPECIFICATIONS

OdB : o.775v

Model D-901
Power Source AC 100 7 120V, 230V, 50/60 Hz
Power Consumption 40W
Operatlng Temperature +5 C to +40%:
Frequency Response 20 7 20,000Hz, itdB (:AdB Input)
Input Max. 12 channels, modular construction (modules optional)
Output Max. 8 channels, modular construction (modules optional)
Slgnal Prooesslng

Feedback Suppresslaii Functlori 12 tilters (auto/dynamic)

Auto Mlxlng Funotlon

Ducker (automatic muting), NOM attenuation

Equallzer/Fllter

Parametric equalizer: 2D 7 20,000Hz, i15dB, Q: 0 267 7 69.249
Filtering: High-pass filter 20 7 20,000Hz, 6dB/oct, 12dB/oct
Low-pass filter 20 720.000Hz, 6 dB/oct, 12 dB/oct

Notch filter 20 7 20,000HZ, O: 8.651 7 69.249
All-pass filter 20 7 20,000HZ, O 0.267 7 69.249
c: (3 High shelving filter 6 7 20,000Hz, i15dB
Low shelving filter 20 7 500Hz, i15dB
Horn equalizer ZOkHz, 0 to +18dB (1dB steps)
0 c Crossover filter. 20 7 20,000Hz, 6dB/oct,12 dB/oct, tadB/oct, 24dB/oct
Compressor Threshold: 720dB to +20 dB
Flatio:11, 21, 3:1, 4:1, 8:1, 12:1, 20:1, no:1
Attack time: 0.2ms to 55
Release time: 10ms to 55
Gainewto +10dB
i Delay Delay time: 0 7 682.6 ms (0021 ms steps)
Matrlx 12 X 8
,0 7 $ $ Preset memory is
. m
g SI Auxlllary Function System Locking tunction
[7 <9 Control PIS-232C, D-sub connector (9 pins), Remote control module (option)
3'1 ®\ Front Panel Sectlon Preset memory recall key 8, LCD Screen, Screen shift key (up/downflel'l/right), setting knob
Input level indicator Dual color LED
Output level indicator Dual color LED
Channel selector key 12 (input channel selection) 8 (output channel selection)
Channel Volume control: 1 (input channel selection) 1 (output channel selection)
6 Rear Panel Input module slot: 6 (input/output module slot: 2)
a 0 Output module slot 2 Remote control module slot:1
Flnlsh Panel: Aluminum, hair-line finish, black
q Others. Pre-coated steel plate, black, 30% gloss
E] o a Dlmenslons 482.6 (W) X 132.6 (H) X 320 (D)mm (excluding projection)
9 Welght 6 9 kg
Accessory Power cord (2m) X 1, Rack mounting screw X 4. Hack mounting bracket
Unit: mm (preinstalled on the unit) X 2, Module mounting screw (spare) X 4, Blank panel

(preinstalled on the module slot) X 9, Fiber washer X 4

Note: When installing the unit, never blndt the intake vents provided in the unit's bottom near the rear.

D-901 Modules

The D7901's modular design allows you to configure the most costettective design for each
applicationTOA otters a range ot modules to suit a variety ot input and output requirements.

Remote
Control
Monaural Type Stereo Type XLFt [$33239 FlCA Pin Jack Module
A/D XLFt Removable Connector Block C on n e ct o r Connector
Convener Connector BlocLeCEnngotor
D-936R -
20 bits D-922F D-922E D-971 M 0-971 E D-971R D 981
24 bits D-921 F D-921 E

Page 2

The D-901 is a 19 rack-mounted (3U high) digital mixer
configured with 12 inputs, 8 buses, and 8 outputs. It
features signal processing functions necessary for
sound systems such as feedback suppression and
auto-mixing.

Modular construction permits flexible configuration of
inputs and outputs, from 2-IN/4-OUT to 12-IN/8-OUT
systems.

All functional parameters can be set at the unit. Settings
can be stored in the unit's internal memory as preset
memory" and can be recalled using the front panel-
mounted operation keys.

I SPECIFICATIONS

OdB : o.775v

Model D-901
Power Source AC 100 7 120V, 230V, 50/60 Hz
Power Consumption 40W
Operatlng Temperature +5 C to +40%:
Frequency Response 20 7 20,000Hz, itdB (:AdB Input)
Input Max. 12 channels, modular construction (modules optional)
Output Max. 8 channels, modular construction (modules optional)
Slgnal Prooesslng

Feedback Suppresslaii Functlori 12 tilters (auto/dynamic)

Auto Mlxlng Funotlon

Ducker (automatic muting), NOM attenuation

Equallzer/Fllter

Parametric equalizer: 2D 7 20,000Hz, i15dB, Q: 0 267 7 69.249
Filtering: High-pass filter 20 7 20,000Hz, 6dB/oct, 12dB/oct
Low-pass filter 20 720.000Hz, 6 dB/oct, 12 dB/oct

Notch filter 20 7 20,000HZ, O: 8.651 7 69.249
All-pass filter 20 7 20,000HZ, O 0.267 7 69.249
c: (3 High shelving filter 6 7 20,000Hz, i15dB
Low shelving filter 20 7 500Hz, i15dB
Horn equalizer ZOkHz, 0 to +18dB (1dB steps)
0 c Crossover filter. 20 7 20,000Hz, 6dB/oct,12 dB/oct, tadB/oct, 24dB/oct
Compressor Threshold: 720dB to +20 dB
Flatio:11, 21, 3:1, 4:1, 8:1, 12:1, 20:1, no:1
Attack time: 0.2ms to 55
Release time: 10ms to 55
Gainewto +10dB
i Delay Delay time: 0 7 682.6 ms (0021 ms steps)
Matrlx 12 X 8
,0 7 $ $ Preset memory is
. m
g SI Auxlllary Function System Locking tunction
[7 <9 Control PIS-232C, D-sub connector (9 pins), Remote control module (option)
3'1 ®\ Front Panel Sectlon Preset memory recall key 8, LCD Screen, Screen shift key (up/downflel'l/right), setting knob
Input level indicator Dual color LED
Output level indicator Dual color LED
Channel selector key 12 (input channel selection) 8 (output channel selection)
Channel Volume control: 1 (input channel selection) 1 (output channel selection)
6 Rear Panel Input module slot: 6 (input/output module slot: 2)
a 0 Output module slot 2 Remote control module slot:1
Flnlsh Panel: Aluminum, hair-line finish, black
q Others. Pre-coated steel plate, black, 30% gloss
E] o a Dlmenslons 482.6 (W) X 132.6 (H) X 320 (D)mm (excluding projection)
9 Welght 6 9 kg
Accessory Power cord (2m) X 1, Rack mounting screw X 4. Hack mounting bracket
Unit: mm (preinstalled on the unit) X 2, Module mounting screw (spare) X 4, Blank panel

(preinstalled on the module slot) X 9, Fiber washer X 4

Note: When installing the unit, never blndt the intake vents provided in the unit's bottom near the rear.

D-901 Modules

The D7901's modular design allows you to configure the most costettective design for each
applicationTOA otters a range ot modules to suit a variety ot input and output requirements.

Remote
Control
Monaural Type Stereo Type XLFt [$33239 FlCA Pin Jack Module
A/D XLFt Removable Connector Block C on n e ct o r Connector
Convener Connector BlocLeCEnngotor
D-936R -
20 bits D-922F D-922E D-971 M 0-971 E D-971R D 981
24 bits D-921 F D-921 E