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Summary of Contents for Grace m902
- Page 1 Manual Manual Rev G / Firmware v1.5 all contents © Grace Design/ Lunatec LLC...
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Page 2: Table Of Contents
Doing this now will make your experience with the m902 more enjoyable. In the event that you encounter any technical or operational difficulties with this or any Grace Design product, please feel free to contact us at 303-443-7454. Our office hours are from 9 to 5, Monday through Friday, MST. -
Page 3: Important Safety Information
InformaTIon The Grace Design m902 contains no user serviceable components. Contact Grace Design for repair and upgrade information. In the event that your Grace Design m902 needs to be returned to the factory, contact us for a return authorization number. -
Page 4: M902 Key Features
Sealed gold contact relays are used for all signal switching. • Infrared remote control for level control, left/right balance, mute and more when using the optional remote control unit. • 5 Year limited warranty on parts and labor. grace design m902 owner’s manual... -
Page 5: M902 Frontpanel
InFRaReD ReMoTe ReCeIVeR – Receiver used for optional wireless remote control. HeaDPHone ouTPuTs – Two stereo headphone output jacks wired in parallel. FeeT - four custom machined removable metal feet with neoprene inserts. grace design m902 owner’s manual... -
Page 6: M902 Rearpanel
Open all shipping boxes, carefully remove the m902 and put it aside. Before you go any further, check to make sure the above listed components are included with your shipment. If you believe something is missing, contact your friendly Grace Design dealer and they will make sure you’re taken care of. saVe YouR BoX!! We strongly encourage you to save the box and shipping materials supplied with your m902. -
Page 7: Powering Up The M902
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 8: Input Connections
InPuT - The stereo USB input for connection to a host PC or MAC. Use a standard USB TYPE A -to- TYPE B mini cable. The TYPE A connector is to be plugged in to the HOST PC and the TYPE B mini connector is to be used with the m902 input. grace design m902 owner’s manual... -
Page 9: Output Connections
InPuTs - The m902 provides both balanced and unbalanced stereo inputs. To select either of these analog inputs, rotate the input selector to the desired input. When an analog input is selected, the m902’s internal reference DAC is shutdown. grace design m902 owner’s manual... -
Page 10: About S-Lock Tm
The truly wonderful thing about s-Lock is that regardless of the condition of the external clock used as a reference for the m902, s-Lock grace design m902 owner’s manual... -
Page 11: About X-Feed
After extensive research and listening to many different crossfeed circuits, we chose to licence and implement an existing crossfeed circuit design called “The Natural Crossfeed Filter” which was designed by Jan Meier of Meier-Audio (www.meier-audio.de). grace design m902 owner’s manual... -
Page 12: Accessing And Using The Submenu
DISPLAY DIMMER mode. With the display dimmer turned off, the interface display functions without interruption. With the display dimmer enabled, the displays will extinguish after 4 seconds of inactivity. Any change made by the user or system change (sample rate or s-Lock grace design m902 owner’s manual... - Page 13 Turning the rotary encoder clockwise turns the EXCLUSIVE OUTPUT mode ON. This is indicated with the decimal points illuminating in the double “EO” symbol. Turning the rotary encoder counter-clockwise turns the EXCLUSIVE OUTPUT mode OFF. This is indicated by the double “EO” symbol with out the decimal points. grace design m902 owner’s manual...
- Page 14 Turning the rotary encoder clockwise turns the OUTPUT TOGGLE LOCK mode ON. This is indicated with the decimal points illuminating in the “OL” symbol. Turning the rotary encoder counter-clockwise turns the OUTPUT TOGGLE LOCK mode OFF. This is indicated by the “OL” symbol without the decimal points. grace design m902 owner’s manual...
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Page 15: Wireless Remote Control Operation
Turning the rotary encoder clockwise enables the m902 infrared remote control. This is indicated with the decimal points illuminating in the “IR” symbol. Turning the rotary encoder counter-clockwise disables the m902 infrared remote control. This is indicated by the “IR” symbol without decimal points. grace design m902 owner’s manual... - Page 16 (vol down) and right (vol up) balance. In normal operation, pressing the volume up or down buttons while the selected output is muted will unmute the output. grace design m902 owner’s manual...
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Page 17: M902 Block Diagram
CLOCK grace design m902 owner’s manual... -
Page 18: Infrared Remote Commands
VOLUME UP Press & HOLD Continuously increments VOLUME 0x02FDE01F 0x000000BB or BALANCE UP VOLUME DOWN Press & Release Increments VOLUME or BALANCE 0x02FD906F DOWN VOLUME DOWN Press & HOLD Continuously increments VOLUME 0x02FD906F 0x000000BB or BALANCE DOWN grace design m902 owner’s manual... -
Page 19: Specifications
Input sample rate 32, 44.1, 48, 88.2, 96, 176.4, 192kHz Thd+n 44.1kHz, 24-bit, 1kHz, +20dBu out <0.002% noIse floor 0dB gain, 22-22kHz -94dBu 0dB gain, A-weighted -97dBu poWer reQuIremenTs 115VAC .16A 230VAC .08A grace design m902 owner’s manual... -
Page 20: Cleaning And Maintenance
WarranTy InformaTIon Grace Design warrants all of our products to be free of defective parts and workmanship for a period of five years. This warranty period begins at the original date of purchase and is transferable to any person who may subsequently purchase the product during this time. -
Page 21: Manual Revisions
Revision Page Change Date Initials Initial release added TRS to XLR diagram, revised layout 4/07/08 firmware update to Rev 1.5 8/26/08 Added IF remote commands, Changed wording in power 7/22/09 up sequence. grace design m902 owner’s manual...
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