Grace Design M905 立体声控制器详细介绍

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Grace Design M905 立体声控制器详细介绍
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8 M; P" _) X! [m905是Grace Design第二代的立体声监听控制器，内置了各种专业需求的输入和输出接口，包括模拟和数字，同时有异步USB输入来跟电脑做同步的24bit/192kHz回放。***多可连接3对监听音箱，2对低音炮和一个监听耳机。它的遥控部分很强大又很简介，包含了耳机输出、对讲话筒和独立的实时SPL表。m905主要特性：?模拟输入：非平衡、平衡、CUE和对讲话筒?数字输入：双AES 3、1个S/PDIF、1个TOSLINK、ADAT（4对立体声通道或SMUX模式双立体声通道）?异步的USB 2.0 USB接口，支持24bit/192kHz精度的回放?母带级别数字模拟转换器电路，带de-emphasis滤波?S-lock双段Phase Lock，极低的时钟时基偏移?LCD屏幕可显示输入、音量、输出、SPL和数字模拟转换器状态?通过内置的ECU话筒来显示的SPL表?耳机和监听音箱的音量调节精度为0.5dB?独立的单声道、衰减、静音、低音炮静音按钮?3个立体声监听输出接口，其中两个可接2.1  m905分主机和遥控器两个部分：（如下图）
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ANALOG I/O	3 u8 j# E& E* Y% _8 j' i
THD+N at Maximum Volume, 1kHz, 22Hz-22kHz BW
+20dBu out	<0.0008%
+10dBu out	<0.0008%
0dBu out	<0.002%
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Intermodulation Distortion SMTPE/DIN 4:1 50Hz, 7kHz
@+20dBu out	<0.002%
@ 0dBu out	<0.0015%
Frequency Response	9 j( q; m  Q" ?$ `; ~" x
Balanced Inputs +/-3dB	3Hz to 1.25MHz
Unbalanced Input +/-3dB	3Hz to 275kHz
Dynamic Range
20-22kHz bandwidth	118dB
20-22kHz bandwidth and A weighting filter	121dB
Output Noise
20-22kHz bandwidth, at -20dB gain	-99dBu
20-22kHz bandwidth and A weighting filter, at -20dB Gain	-102dBu
Phase Deviation
20Hz to 20kHz	<10 degrees
10Hz to 100kHz	< 19 degrees
Crosstalk any channel	* ^" m* S( P, l3 M( k
100Hz	<104dB
1kHz	<100dB
20kHz	<79dB
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Balanced Input CMRR
60Hz	>90dB
1kHz	>85dB
10kHz	>70dB
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Gain Range	-104dB to +13dB
Channel Tracking Accuracy
Any channel	+/-0.1dB
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Maximum Output Level	+26dBu
Maximum Input Level	8 n6 k! g. G5 p
Balanced inputs	+29dBu
Unbalanced inputs	+21dBu
Impedances	* _/ ^* {9 X  }
Balanced inputs	88k Ohms
Unbalanced inputs	53k Ohms
Balanced outputs	300 Ohms
Minimum load impedance	300 Ohms
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External Talkback Mic Preamp Gain	+7dB to +70dB in 1dB steps
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DIGITAL TO ANALOG CONVERTER FIXED OUTPUTS
Output Levels	' m% R( o8 f7 u/ U, V, C
User selectable (0dBFS)	-76dBu to +24dBu in 0.5dB steps
Fixed output trim range (0.5dB steps)	6 K! ~1 t; |4 F9 @- W$ a
THD+N
1kHz, -1dBFS, (0dBFS = +20dBu), 20-22kHz bandwidth	0.0006%
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Dynamic Range	1 W  F( f$ A% Z
20-22kHz bandwidth, 0dBFS = +20dBu (AES17 filter)	117dB
20-22kHz bandwidth, 0dBFS = +20dBu (A-weighted)	119dB
Input Lock Range
AES3/SPDIF	44.1kHz +/-400Hz 48kHz +/-700Hz ; \2 M& ^3 n6 [$ J* |* ?88.2kHz +/-1200Hz - Y7 U2 U2 b. d: T. T1 s96kHz +/-1300Hz 176.4kHz +/-2000Hz " |; k1 ]+ ^3 z% _5 D- B192kHz +/-2000Hz
TOSLINK	44.1kHz +/-400Hz 7 ~- ]2 v$ G/ S8 W% Q, q48kHz +/-700Hz 88.2kHz +/-1200Hz . u& Q7 A3 V# g5 u% q96kHz +/-1300Hz
ADAT LIGHTPIPE? 8 Channels at 44.1kHz and 48kHz & ?4 S& w# W) w: I/ q+ _" B. n2 s' m5 E4 Channels at 88.2kHz and 96kHz (s/mux)	44.1kHz +/-50Hz * h$ x( b+ c6 R# S: F- u48kHz +/-70Hz + N( }: o) o: H3 k6 T9 [# Z- b88.2kHz +/-50Hz 2 q- _# ^$ n+ g9 D4 L# H96kHz +/-70Hz
USB Supported Sample Rates	44.1, 48, 88.2, 96, 176.4, 192kHz, DSD64 2.8224MHz, DSD128 5.6448MHz
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s-Lock? Capture Range
44.1kHz	+/- 6Hz
48kHz	+/- 7Hz
88.2kHz	+/- 14Hz
96kHz	+/- 20Hz
176.4kHz	+/- 24Hz
192kHz	+/- 30Hz
Word Clock / Superclock Input
Impedance (switchable)	75 ohm / 1Meg ohm
Minimum Voltage	3V peak to peak
Maximum Voltage	5V peak to peak
Word clock frequencies supported	44.1, 48, 88.2, 96, 176.4, 192kHz
Superclock frequencies supported	N/A
POWER SUPPLY / GENERAL
Power consumption	60W
Input Voltage 50-60Hz	100VAC – 240VAC
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Dimensions	+ a- H# _: {. k* |1 l: M
Main chassis IEC 2U	3.5" x 10.5" x 17"
Remote control unit	8.9" x 5.1" x 2.2"
Weight	. o- y" R6 I! X9 ^% P
Main chassis	7.8lbs
Remote control unit	2.2lbs

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Grace Design M905 立体声控制器详细介绍呵呵。