Grace Design m906 Owner's Manual

High fidelity 5.1 monitoring system.

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Owner's manual (39 pages)

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Page 2: Table Of Contents
Welcome Thanks for purchasing the Grace Design m906 high fidelity 5.1 monitoring system. We build all our products to be completely reliable and easy to use, so you can concentrate on producing great sounding audio, not struggling with complicated equipment or difficult to use product manuals.
Page 3: Important Safety Information
Service Information The Grace Design m906 contains no user serviceable components. Contact Grace Design for repair and upgrade information. In the event that your Grace Design m906 needs to be returned to the factory, contact us for a return authorization number.
Page 4: M906 Mainframe Frontpanel
Ring, Sleeve) jack. This output runs parallel with the headphone jack on the remote unit. POWER LED The green POWER LED is illuminated when power is received from the external power supply to the rear panel mounted DC input. grace design m906 owner’s manual...
Page 5: M906 Mainframe Rearpanel
ADAT INPUT This Lightpipe connector provides an 8-channel input interface from an ADAT format digital source. 44.1kHz and 48kHz sample rates are supported. AES3 STEREO INPUT This female XLR connector is used to receive a stereo AES3 format digital signal. (contunued) grace design m906 owner’s manual...
Page 6 2 CH 1 and 2 CH 2 INPUT These are balanced analog stereo XLR inputs. 5.1 BALANCED ANALOG INPUTS This DB25 female connector accepts analog balanced (+4dBu) signals for use as a 5.1 source input. grace design m906 owner’s manual...
Page 7: M906 Remote Control Unit
The range of this display is 0 to 100dB. The display also shows edit values when the system is in CAL mode. (contunued) grace design m906 owner’s manual...
Page 8 HEADPHONE AMPLIFIER JACK This 1⁄4” TRS headphone output jack is provided on the remote control unit to access the integrated reference headphone amplifier. REMOTE CONNECTOR This female DB15 connector is used to supply the remote unit with power, headphone signal and serial communication. grace design m906 owner’s manual...
Page 9: Unpacking And Installing Your M906 System
REGISTER YOUR UNIT Also, we strongly urge you to register your unit with Grace Design. We provide a limited 5 year warranty on all of our products, but if you don’t register your system it’s hard for us to help you if and when help becomes necessary.
Page 10: Connecting The M906
CAM SETTING LINE VOLTAGE FUSE VALUE 100V~ 100V~ 250V~ T 750mA L 120V~ 120V~ 250V~ T 750mA L 220V~ 220V~ 250V~ T 500mA L 220V~ 230V~ 250V~ T 500mA L 240V~ 240V~ 250V~ T 500mA L grace design m906 owner’s manual...
Page 11 It should also be noted that while the power sequence will not damage headphones connected to the m906, you should NOT be wearing them when power is applied or turned off. grace design m906 owner’s manual...
Page 12: System Connections
Be sure to use the supplied 15 pin cable and not an off the shelf computer video cable. If you need a longer cable contact your Grace Design dealer or call us directly. TB SW JACK The talkback switch input allows the connection of an external switch, such as a footswitch, for remotely activating the talkback mic input on the m906.
Page 13 Cable and connector quality make a large difference – both for analog as well as digital connections, so the better the cabling you use with your m906 system, the better overall performance you’ll achieve in your system. grace design m906 owner’s manual...
Page 14: Operating The M906
7 and 8 from the ADAT input on the rear panel. It cannot be sourced from any other pair of ADAT channels. To select a digital input, simply press the corresponding input switch (AES3 1, AES3 2, S/PDIF or grace design m906 owner’s manual...
Page 15 The truly wonderful thing about s-Lock is that regardless of the condition of the external clock used as a reference for the m906, s-Lock will take this clock source and provide an grace design m906 owner’s manual...
Page 16 CR OUT 1 to feed your main stereo monitors and CR OUT 2 to feed a near-field pair. However, if you find yourself in need of a third stereo monitoring configuration, we’ve got you covered. grace design m906 owner’s manual...
Page 17 The Level Displays The large blue LED displays located to the left of the headphone and main level encoders show relative grace design m906 owner’s manual...
Page 18 Note: If you’ve selected a 5.1 source, are currently in the 5.1 headphone mode and inadvertently select a stereo input source, this mode will automatically become inactive and the m906 will return to it’s normal operational state. You can,however,select different 5.1 sources while in this mode. CAL mode is not operable grace design m906 owner’s manual...
Page 19 When the dim switch is pressed, dim mode becomes active and the switch LED lights solid. When pressed again, dim is exited and the switch LED is extinguished. Mute All Mode grace design m906 owner’s manual...
Page 20 LCD screen talkback mic amp gain setting will read ‘set preamp gain’ (screenshot 5). Ž To increase the mic amp gain, rotate the main level encoder in a clockwise direction. As you do this, you’ll see grace design m906 owner’s manual...
Page 21 Typical LCD window showing the digital input selected and DAC status information s-Lock status input source selected   sample rate word clock source grace design m906 owner’s manual...
Page 22: Advanced Features: Accessing The Cal Modes
All other switch LEDs on the remote control unit will be unlit. If you inadvertently entered CAL mode, simply press the CAL switch again. You’ll be returned to the normal operating state of the m906 and the CAL switch LED will extinguish. grace design m906 owner’s manual...
Page 23 The system also provides the ability to edit each channel’s level setting within each of the speaker output sets. As an example, you may have a 5.1 configured set of amps/speakers currently being driven from speaker output set #2 that includes surround monitors that have a different input grace design m906 owner’s manual...
Page 24 Rotate the ‘main level/edit’ rotary encoder in a clockwise direction to increase the value. Rotate the encoder in a counter-clockwise motion to decrease the value. The individual Left and Right levels can be trimed as well grace design m906 owner’s manual...
Page 25 Enter CAL mode by pressing the CAL switch. The switch LED will begin to flash, indicating that you’re now in calibration mode. All other switch LED’s on the remote control unit will be unlit. If you inadvertently entered grace design m906 owner’s manual...
Page 26 Changing the Dim Level The default dim level, as set at the factory, is -20dB. The dB range of dim is -5 to -35dB in 5dB steps. Changing to a new dim level is easy: grace design m906 owner’s manual...
Page 27: Cleaning And Maintenance
Your m906 will clean up like a shiny penny, again to be the crown jewel of your equipment rack. grace design m906 owner’s manual...
Page 28: Cable And Connector Wiring Diagrams
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Page 29: M906 Block Diagram
Block Diagram grace design m906 owner’s manual...
Page 30: Specifications
Maximum Input Level Balanced inputs +30dBu Unbalanced inputs +20dBu Impedances Balanced inputs 30k Ohms Unbalanced inputs 50k Ohms Balanced outputs 300 Ohms Minimum load impedance 300 Ohms * available via optional jumper setting, please consult with factor grace design m906 owner’s manual...
Page 31 Power supply unit 1.7” x 8.5” x 8.5” Weight Main chassis 14.1lbs / 6.4kg Remote control unit 2.3lbs / 1kg Power supply unit 6.5lbs / 2.9kg * available via optional jumper setting, please consult with factory. grace design m906 owner’s manual...
Page 32: Warranty Information
INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. In no event will Grace Design be liable for lost profits or any other incidental, ‘ consequential or Exemplary damages, even if Grace Design is aware of the possibility of such damages.

Grace Design m906 Owner's Manual

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