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Thank you for purchasing TOA's D-911 VCA Fader unit. 
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

D-911

D-911 VCA FADER UNIT 

INSTRUCTION MANUAL

1. GENERAL DESCRIPTION

The D-911 VCA Fader Unit is designed to be used in
conjunction with the D-901 Digital Mixer. Connecting to the
D-984VC VCA Control Module permits volume adjustment
of all the channels and contact controls of the D-901 Mixer. 

2. HANDLING PRECAUTIONS

• The D-911 Fader Unit is connected to the VCA control

modules mounted in the D-901 Digital Mixer. Connect
each of eight terminals to
the D-984VC's terminal of
the same name by way of
the fully-connected straight
cable as shown on the
right. 

• Use the D-901 firmware of version 3.0 or later. Firmware

versions earlier than it cannot be used in conjunction with
the fader unit. 
The firmware version number can be confirmed on the D-
901's front panel-mounted display.

3. BLOCK DIAGRAM

[Connection]

1
2
3
4
5
6
7
8

1
2
3
4
5
6
7
8

1 – 8

1 – 8

T O A

D - 9 0 1

S e r i e s

S o f t w a r e

V e r 3 . 0 0

[Display example]

VCA
IN CH 1-6

VCA
IN CH 7-12

VCA
OUT CH 1-4

VCA
OUT CH 5-8

CTRL
IN 1-4

CTRL
OUT 1-4

CTRL
IN 5-8

CTRL
OUT 5-8

1

6

DC

7

12

DC

1

4

DC

5

8

DC

DC

1

4

1

4

Make contact

5 – 8

Same as above

4. SPECIFICATIONS

• Accessories

Fader knob (Red, Yellow)

*

............................ 3 each

Volume knob (Red)

*

.............................................. 2

Rack mounting screw ............................................. 4
Rack mounting fiber washer  .................................. 4
Rack mounting bracket (preinstalled on the unit) ... 2

* Convenient for color coding to distinguish

channels to which stereo link or group
settings are assigned.

Note

The design and specifications are subject to
change without notice for improvement. 

Power Supply 

5 V DC (supplied from the optional D-984VC) 

Connector 

RJ45 connector x 8

Input Fader Control

Input fader (100 mm) x 12 

Output Volume Control

Output volume control x 8

Contact Control

Illuminated switch x 8

Remote Output

No-voltage make contact output 
(contact capacity: 30 V DC, 4 A)

Remote Switch

Seesaw switch for activating the remote function of the 
power distributor

Finish

Panel: Pre-coated steel plate, black (30% glossy) 

Dimensions 

482.6 (w) x 177 (h) x 61.3 (d) mm 
(excluding projection) 

Weight 2.7 

kg

If your firmware version is old, download the latest
software program and the "D901 PC software instruction
manual" from the TOA Internet product data site
[http://www.toa-products.com/]. For the update
procedure, refer to the instruction manual. 

• For channels with stereo link or group settings

established at the D-901, the lowest numbered channels
in the stereo linked or grouped channels are enabled.

• Control's knob position 10 of the D-911 provides the

channel gain set by the D-901. As a guide, knob position
8 provides about 10 dB below the gain set by the D-901.

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