User Manual for Grace Design m905 Reference Monitor Controller Click to enlarge the picture
Contents of the user manual for the Grace Design m905 Reference Monitor Controller
- Product category: Studio Monitor Controllers Grace Design
- Brand: Grace Design
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Grace Design Studio Monitor Controllers
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User manual for the Grace Design m905 Reference Monitor Controller contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Grace Design product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Grace Design user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Grace Design product will considerably shorten its lifespan!
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Product description The black Grace Design m905 is a reference monitor controller and high-quality digital-to-analog converter, designed to deliver mastering-quality monitoring to your home or professional studio.
Featuring balanced and unbalanced analog inputs, and AES, S/PDIF and ADAT digital inputs, the m905 allows you to switch between a variety of input sources. Additionally, the unit has three stereo pairs of balanced speaker outputs with two assignable mono sub outputs, giving you a versatile selection of monitoring options when mixing or mastering. Features: - Balanced and unbalanced analog inputs
- 2x AES3 , 1x S/PDIF, 1x TOSLINK, ADAT (selectable in 4 pairs, or 2 pairs in S/MUX), USB & DSD128 (5.6448 MHz)
- Audio circuitry designed for transparent playback
- Asynchronous Class 2 USB playback supports up to 24 bit / 192 kHz
- Mastering quality DAC circuitry with configurable de-emphasis filtering
- s-lock dual-stage Phase Lock Loop for low jitter clock regeneration
- Hybrid RCU with hardware switches, large level encoder, and graphical LCD
- LCD display shows input, level, output, SPL, and DAC status plus a full calibration menu
- RCU includes built-in microphone for talkback and onboard SPL meter
- SPL meter features include level, peak, fast and slow modes, and A & C weighting
- Precision 0.5 dB step level control for speakers and headphones
- Reference headphone amplifier circuitry, with outputs on both the RCU and ACU
- Dedicated mono, dim, mute, and sub mute switches
- Mono mode can be set to L+R summed, L only in both channels, or R only in both channels
- L solo, R solo, L-R, and sub solo modes available
- 3 available stereo speaker outputs, with 2 assignable mono sub outputs (or single stereo sub output)
- Multi-mode SUB / DAC / METER out
- SUB out mode for stereo or multiple mono subwoofer outputs
- DAC out mode for a fixed DAC output fed by the selected digital input
- METER out mode fed by selected input signal (digital or analog), configurable with a fixed level or to follow the monitor level
UPC: 823821090575 In the Box Grace Design m905 Reference Monitor Controller (Black) Audio Control Unit (ACU) Remote Control Unit (RCU) RCU Tilt Base and Accompanying Hardware 25' Serial Cable 6' AC Power Cable Rubber Feet and Rack Screws Limited 5-Year Warranty Table of Contents
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Technical parametersGrace Design A905-BK Specs | | | THD + N | At Maximum Volume, 1 kHz, 22 Hz to 22 kHz BW
+20 dBu Out: <0.0008%
+10 dBu Out: <0.0008%
0 dBu Out: <0.002% | | Distortion | Inter-Modulation Distortion SMPTE / DIN 4:1 50 Hz, 7 kHz
At +20 dBu Out: <0.002%
At 0 dBu Out: <0.0015% | | Frequency Response | Balanced Inputs +/-3 dB: 3 Hz to 1.25 MHz
Unbalanced Input +/-3 dB: 3 Hz to 275 kHz | | Dynamic Range | 20 to 22 kHz Bandwidth: 118 dB
20 to 22 kHz Bandwidth and A-Weighting Filter: 121 dB | | Output Noise | 20 to 22 kHz Bandwidth, at -20 dB Gain: -99 dBu
20 to 22 kHz Bandwidth and A-Weighting Filter, at -20 dB Gain: -102 dBu | | Deviation | Phase Deviation:
20 Hz to 20 kHz: <10°
10 Hz to 100 kHz: <19° | | Cross Talk | Crosstalk Any Channel:
100 Hz: <104 dB
1 kHz: <100 dB
20 kHz: <79 dB | | Balanced Input | For Balanced Input:
60 Hz: >90 dB
1 kHz: >85 dB
10 kHz: >70 dB | | Gain Range | -104 dB to +13 dB | | Channel | Channel Tracking Accuracy: +/-0.1 dB | | Maximum Output Level | +26 dBu | | Maximum Input Level | Balanced Inputs: +29 dBuUnbalanced Inputs: +21 dBu | | Impedance | Balanced Inputs: 88 kOhmsUnbalanced Inputs: 53 kOhmsBalanced Outputs: 300 OhmsMinimum Load Impedance: 300 Ohms | | Mic Pre Gain | External Talkback Mic Preamp Gain: +7 dB to +70 dB in 1 dB steps | | | | Output Level | User Selectable (0 dBFS): -76 dBu to +24 dBu in 0.5 dB steps
Fixed output trim range: (0.5 dB steps) | | THD + N | 1 kHz, -1 dBFS, (0 dBFS = +20 dBu), 20 to 22 kHz Bandwidth: 0.0006% | | Dynamic Range | 20 to 22 kHz Bandwidth, 0 dBFS = +20 dBu (AES 17 filter): 117 dB20 to 22 kHz Bandwidth, 0 dBFS = +20 dBu (A-weighted): 119 dB | | Lock Range | AES3 / SPDIF:44.1 kHz +/-400 Hz48 kHz +/-700 Hz88.2 kHz +/-1200 Hz96 kHz +/-1300 Hz176.4 kHz +/-2000 Hz192 kHz +/-2000 HzTOSLINK:44.1 kHz +/-400 Hz48 kHz +/-700 Hz88.2 kHz +/-1200 Hz96 kHz +/-1300 HzADAT:8 Channels at 44.1 kHz and 48 kHz4 Channels at 88.2 kHz and 96 kHz (s/mux)44.1 kHz +/-50 Hz48 kHz +/-70 Hz88.2 kHz +/-50 Hz96 kHz +/-70 HzUSB:44.1 kHz 48 kHz 88.2 kHz 96 kHz 176.4 kHz 192 kHz DSD64 2.8224 MHzDSD128 5.6448 MHz | | Capture Bandwidth | s-Lock Capture Range44.1 kHz: +/- 6 Hz48 kHz: +/- 7 Hz88.2 kHz: +/- 14 Hz96 kHz: +/- 20 Hz176.4 kHz: +/- 24 Hz192 kHz: +/- 30 Hz | | Word Clock | Impedance (switchable): 75 Ohms / 1 MOhms
Minimum Voltage: 3V peak to peak
Maximum Voltage: 5V peak to peak
Word Clock Frequencies Supported: 44.1, 48, 88.2, 96, 176.4, 192 kHz
Superclock Frequencies Supported: N/A | | | | Power Consumption | 60 W | | Input Voltage | 100 to 240 VAC 50-60 Hz | | Dimensions | Main Chassis IEC 2U: 3.50 x 10.50 x 17.00" (8.89 x 26.67 x 43.18 cm)Remote Control Unit: 8.90 x 5.10 x 2.20" (22.61 x 12.95 x 5.59 cm) | | Weight | Main Chassis: 7.80 lb (3.54 kg)Remote Control Unit: 2.20 lb (1.00 kg) | | | | Package Weight | 20.0 lb | | Box Dimensions (LxWxH) | 26.3 x 18.5 x 11.0" |
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