Drawmer-electronics 1962 Digital Vacuum Tube Pre-Amplifier Manuel d'utilisateur

i1962DIGITAL VACUUM TUBE PRE-AMPOPERATORS MANUAL

1962 OPERATORS’ MANUAL6zThe LED will illuminate brightly and steadily if a reliable and compatible clocksource is recognised.The LED will blink when

1962 OPERATORS’ MANUAL7ADAT:(Where the D62-A is fitted). This is permanently enabled and presents thedigital data to the standard Alesis™ format, wher

1962 OPERATORS’ MANUAL8CONTROL DESCRIPTION The 1962 comprises two independent audio channels plus a Stereo Mix section, and bothchannels may be operat

1962 OPERATORS’ MANUAL9MICROPHONE PRE-AMPLIFIER The microphone input stage is based around an advanced, discrete component design,characterised by ext

1962 OPERATORS’ MANUAL10Gain:When depressed, provides an additional 20dB of gain to the auxiliary input.A Yellow status LED will illuminate.Bright:Swi

1962 OPERATORS’ MANUAL11HIGH & LOW PASSThe high and low pass filters are included to allow the userto attenuate undesirable sounds at the extremes

1962 OPERATORS’ MANUAL12Low Fine Tune:Continually variable 6dB per octave shelving filter, providing up to 12dB of cutor boost. This control may be us

1962 OPERATORS’ MANUAL13occur, but as the signal level falls below 0dB, low level, low frequencytransients will be enhanced proportionally.High Enhanc

1962 OPERATORS’ MANUAL14 2) There is a greater chance of a digital overload, undoing the control andsafety feature of the limiter. 3) Any digital outp

1962 OPERATORS’ MANUAL15DIGITAL (when D62 module is fitted)The D62 module is a very high resolution analogue to digitalconverter utilising proprietary

iiTWELVE MONTHS LIMITED WARRANTYDRAWMER ELECTRONICS LTD., (HEREIN AFTER KNOWN AS THE MANUFACTURER)WARRANTS THIS AUDIO PRODUCT TO BE FREE FROM DEFECTS

1962 OPERATORS’ MANUAL161962 FRONT PANEL DIGITAL CONTROLS:Sample Rate:This switch selects 48.0KHz, 44.1KHz and EXTernal clock for synchronisingto othe

1962 OPERATORS’ MANUAL17Dither (cont.):REPLAY A, B, C, D:The four positions A, B, C and D (in yellow) are used for playback from adigital multitrack r

1962 OPERATORS’ MANUAL18DITHER SELECTOR OPTIONSPosition Dither and Noise Shaping1 Positions the noise shaped dither to the very top of the audio spect

1962 OPERATORS’ MANUAL19STEREO LINKStereo Link:Averages the left and right channel signals to provide the same degree ofgain reduction to both limiter

1962 OPERATORS’ MANUAL20IF A FAULT DEVELOPSFor warranty service please call Drawmer Electronics Ltd. Or their nearest authorisedservice facility, givi

1962 OPERATORS’ MANUAL21TECHNICAL SPECIFICATIONS(All measurements taken at 0dBu operating level)INPUT IMPEDANCESLINE 20KΩMIC 150Ω to 600ΩAUX 470KΩMIC

1962 OPERATORS’ MANUAL22BLOCK DIAGRAM

iiiCONTENTSSAFETY CONSIDERATIONS page 1INTRODUCTION page 2APPLICATIONS page 3INSTALLATION page 4" Audio connectionspage 4" Digital connectio

ivFor the USAFEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCESTATEMENTThis equipment has been tested and found to comply with the limits

1962 OPERATORS’ MANUAL1DRAWMER 1962Digital Vacuum Tube Pre-AmpSAFETY CONSIDERATIONSCAUTION - MAINS FUSETO REDUCE THE RISK OF FIRE REPLACE THE MAINS FU

1962 OPERATORS’ MANUAL2INTRODUCTION The 1962 is a hybrid vacuum tube/semi-conductor, dual-channel pre-amplifier whichfeatures extremely low noise oper

1962 OPERATORS’ MANUAL3APPLICATIONSStandalone microphone preamplifiers are generally associated with direct-to-stereorecording or with the purist reco

1962 OPERATORS’ MANUAL4INSTALLATIONThe 1962 is designed for standard 19" rack mounting and occupies 2U (88mm) of rackspace. Avoid mounting the un

1962 OPERATORS’ MANUAL5outputs of the 1962 to the patchbay. If such measures are necessary, balanced operationis recommended. Various signal cable ear