Grace Design m201 manual

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Table of contents for the manual

  • Page 1

    Owner ’ s Manual Rev G All conten ts ©2012 Grace Design m 2 01 Microphone Pr eamplier / ADC 4689 Ute Highway , Lyons, C O 80540 USA tel 1.303.823.8100 fax 1.303.823.8101 info@grac edesign.com / www .gracedesig n.com[...]

  • Page 2

    grace design m 201 owner’ s manual 2 W elcome Thank you f or purchasing the Grac e Design m201 microphone pr eamplier . W ith the combina tion of unmatched sonic performance, useful fea tures, and solid r eliability , the m201 is a po werful recording tool designed to help y ou make the best recor dings of your car eer . W e hav e designed the[...]

  • Page 3

    grace design m 201 owner’ s manual 3 Important Safety Information GENERAL • Indoor use only • Ordinary Protection: T his equipment should not be exposed to dripping or splasing . • Av oid placing objects filled with liquids, such as vases or glasses, on this equipmen t. • Class I Equipment (gr ounded type) • Electrical ra[...]

  • Page 4

    M+S WIDTH 1 0 0m 70 m 30s 30m 70s 50m 50s GRACE DESIGN USA m 201 microphone preamplifier HI-Z 1 48V HI -Z 130 V rib bon ( +10d B ) 20 30 40 50 60 INPUT MODE + 48V - 20dB HI-Z 2 48V HI -Z 130 V rib bon ( +10d B ) 20 30 40 50 60 INPUT MODE + 48V - 20dB 1 2 7 6 5 4 3 8 9 grace design m 201 owner’ s manual 4 F ront Panel Controls 1. 24 position gold [...]

  • Page 5

    120Vac PUSH PUSH PUSH 1 3 2 4 PUSH 1 3 2 4 PUSH PUSH WC S/PDIF LINE IN TOSLINK AES 2 OUT IN AES 1 R IGHT LE F T M+S O U T 130 V MIC IN 1 2 MIC IN OU T OU T MIC IN OU T OU T GRACE DES IGN USA m 0 1 2 mic roph one preamp lifier 1 2 Pb LEAD F REE RoHS COMPLIE NT 1 2 3 4 5 6 grace design m 201 owner’ s manual 5 Rear P anel Connections 1. XLR mic inpu[...]

  • Page 6

    grace design m 201 owner’ s manual 6 A udio Connections Microphone input connections are made via female XLR connectors with pin 2 positiv e, pin 3 nega - tive and pin 1 gr ound. 48V phant om power is supplied on pins 2 and 3. Output connections are made via male XLR connectors with pin 2 positive, pin 3 nega tive and pin 1 gr ound. If the output[...]

  • Page 7

    grace design m 201 owner’ s manual 7 60Hz. Fr om the rear of the m201, open the trap door next to the IEC pow er inlet with a small screw - driver . Carefully pull the voltage select cam straight out and then insert with the desired voltage showing. Do not try to rotate the cam while it is in the po wer input module . Replace the fuses with the p[...]

  • Page 8

    grace design m 201 owner’ s manual 8 option is present, this selection will deactivate the standard XLR inputs and enable the dedicat ed 4 pin 130V XLR inputs. In this mode, the 48V pushbutton swit ch will turn on the 130V power supply . Phase rev erse and -20dB pad are av ailable in this mode. The dual balanced XLR outputs carr y the output sign[...]

  • Page 9

    grace design m 201 owner’ s manual 9 1 and 2 outputs while also recor ding (or monitoring) the stereo c omposite from the M-S LEFT and RIGHT outputs. Note : For more information on M-S rec ording we would highly recommend the AES pa - per written by W es Do oley and Don Streicher c alled “M-S Stereo: A Pow er ful T echnique for Working in Ste -[...]

  • Page 10

    grace design m 201 owner’ s manual 10 Simply push the button to select the input source y ou require . FS SELECT The m201 A/D converter can operate at sampling ra tes of 44.1, 48,88.2, 96, 176.4, and 192kHz. Whether operating on the int ernal cr y stal or an external clock source, y ou must selec t the appropriate sampling ra te at which you wish[...]

  • Page 11

    grace design m 201 owner’ s manual 11 F our standard sensitivities are supported in the m201 A/D converter: +18dBu = 0dBFS (14dB Head - room) +20dBu = 0dBFS (16dB Headroom) +22dBu = 0dBFS (18dB Headr oom) +24dBu = 0dBFS (20dB Headroom). The front panel in terface features a calibration mode tha t allows pr ecise adjustment of the A/D sensi - tivi[...]

  • Page 12

    grace design m 201 owner’ s manual 12 <figure 3 - A/D sensitivity trim pot locations> 8 4 C -15 V A U9 C40 P4 N G I S E D E C A R G C42 7 4 C 5 4 C 7 3 R 2 4 R C46 +6 .5 V TP 5 TP 6 +3.3V 1 4 R 4 5 C 3 4 R 4 4 R P5 R31 4 3 R 2 V E R 6 3 1 T A 5 3 R R38 K2 K3 Q1 C10 K1 P1 FD1 C13 J2 U4 C20 R9 TP1 + 15 V A + 18 V TP2 1 n i P J5 C2 9 P3 U1 1 0[...]

  • Page 13

    grace design m 201 owner’ s manual 13 2. Set all of the gain contr ols to the 30dB position. 3. C onnec t the audio genera tor to the input of channel 1. 4. Set the generat or output level t o appro ximately -20dBu @1KHz. 5. If the generat or has an unbalanced output, refer to gur e 2 below for termina tion information 6. C onnec t the lev el [...]

  • Page 14

    grace design m 201 owner’ s manual 14 <figure 4 - offset test point and peak LED adjust trim pots> C17 TP5 TP6 C51 C12 R40A C36A C53 R40B C36B J4B P1 CHAN NE L 1 P7 R17B R18B CHAN NE L 2 C13B R62A R14B C52 R20B R21B D14A R51A R52A R60A R61A R2B R1B C42A C4B R6B C1B C43A R7B D13A C35A R53A D16A D17A R8B C10B J3B U1B R37B D10B R38B C22B R15B [...]

  • Page 15

    grace design m 201 owner’ s manual 15 CLEANING Y our m201 preamplier chassis is constructed out of high quality stainless steel. Under normal cir - cumstances, virtually no maintenance is requir ed to keep the unit look ing shin y and new . However , if your unit becomes smudged or dirty, her e are some cleaning tips: We r ecommend using eithe[...]

  • Page 16

    grace design m 201 owner’ s manual 16 Specifications preamplier specications (without A/D con verter) Fr equency Response @ 40dB gain ± 0.2dB (50Ω source) 18Hz-65kHz @ 40dB gain ± 3dB (50Ω source) 4.5Hz-350kHz THD+N @ 20dB gain +25dBu out, 1kHz <.0008% @ 40dB gain +25dBu out, 1kHz <.0009% @ 60dB gain +25dBu out, 1kHz <.0070% In[...]

  • Page 17

    grace design m 201 owner’ s manual 17 A/D module specications (line input) Dynamic range 20Hz-20kHz >115dB “ A” weighting >117dB THD+N 1kHz, -1dBFS, 20Hz-22kH z < 0.00026% (-112dB) Fr equency response +/-0.2dB -3dB 44.1kHz Fs 5Hz-21kHz 22kHz 48kHz Fs 5Hz-23kHz 24kHz 88.2kHz Fs 5Hz-41kHz 44kHz 96kHz Fs 5Hz-45kHz 48kHz 176.4kHz Fs 5[...]

  • Page 18

    grace design m 201 owner’ s manual 18 AES3 1 INPUTS OPTI ONAL ANALOG TO DI G ITAL CONVERTER MOD ULE 2-CH SPDIF CH 1 OUT A 6-CHANNEL ANA L OG OUTPU TS CH1 MIC TOSLINK LOOP SYNC IN WORD CLOCK CLOCK OUT s-Lock PLL 6-CHANNEL MICROPHONE AM PLIFIER HI-Z INPUT AMP OUTPU T DRIVERS BALANC ED W IDE RANGE PL L CH1 HI-Z A ES3 TX A ES3 TX ADC CH1 DPA DPA INPU[...]

  • Page 19

    grace design m 201 owner’ s manual 19 W arranty Infor mation Grace Design warrants all of our pr oduc ts to be fr ee of defective par ts and workmanship for a period of ve years . This warranty period begins at the original dat e of purchase and is transf erable to any person who may subsequently purchase the pr oduc t during this time. This w[...]

  • Page 20

    grace design m 201 owner’ s manual 20 Revision Page C hange Date Initials A Initial release 04/25/2007 mbg B 3 Changed voltage range and pow er specications 04/26/2007 mbg B 4 Po wer switch description changed to standby switch. 04/26/2007 mbg B 6 Added pow er mains disconnec t inf or mation 04/26/2007 mbg B 13 Added signal o w diagram 04/2[...]