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Krell Industries Digital-to-Analog Processor REFERENCE 64, Руководство пользователя для владельца

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Содержание Digital-to-Analog Processor REFERENCE 64

Страница 1: ...DIGITAL C D0 0 0 0 REFERENCE 64 OWNER S REFERENCE ...

Страница 2: ...te with the CD transport s clock output The data signal is run through four serial Motorola DSP 56001 processors two per channel in series running Krell written software contained within socketed EPROMs This method allows for simple installation of future software updates Within the digital section data is oversampled 64 times Data then goes through Krell s own custom DACmodules After conversion i...

Страница 3: ...horized dealer or the KRELL staff for assistance In the unlikely event that your REFERENCE 64 should require service you will be pleased to know that it is backed by a com prehensive Customer Satisfaction policy and one of the most advanced service facilities in the industry For detailed infor mation on the terms and conditions of service please consult the Warranty and Service section of this Ref...

Страница 4: ...RUCTIONS 6 ASSEMBLY INSTRUCTIONS 8 PLACEMENT 9 AC POWER CONSIDERATIONS 10 INPUT AND OUTPUT CONNECTIONS 19 PROCESSOR OPERATION 21 23 OPERATING INSTRUCTIONS QUESTIONS AND ANSWERS 26 SPECIFICATIONS 27 WARRANTY AND SERVICE INFORMATION PAGE4 ...

Страница 5: ...Reference and Warranty Card NOTE If any of these items are not included please contact your authorized dealer immediately for assistance 2 Carefully remove the Processor Power Supply and accessories from the box Remove the protective plastic wrap from the Processor and Power Supply NOTE Save all packing materials If you must ship your REFERENCE 64 in the future repack the unit in its original pack...

Страница 6: ...he feet The feet have been carefully designed to slide into the shoes on the front top of the Power Supply cover The rear feet on the processor unit fit directly over the pins protruding on the rear top of the Power Supply cover The rear feet are self centering over the rear protruding pins on the Power Supply cover 4 Face the front of the Power Supply Holding the front of the Processor with both ...

Страница 7: ...ors on the power coupler go into the Processor s male connectors Once the coupler has been firmly pressed into place secure it utilizing the four thumb screws provided When properly seated the coupler edges should be parallel with the rear and top panels of the supply and Processor chassis CAUTION Do not attempt to operate the unit before inserting and tightening the four floating screws to the ch...

Страница 8: ... the chassis are free from obstruction allowing the Processor to dissipate heat created by its Power Supply and Class A output stage Place the unit on a clean level surface away from excessive dirt or moisture Make sure the REFERENCE 64 has at least 2 inches of clearance on either side and 2 3 inches of space at the top Components that are heat sensitive should not sit directly above the unit 3 Th...

Страница 9: ...rds or multiple AC adaptors High quality 15 amp grounded AC strips are acceptable High quality ACline conditioners or filters can be utilized if they are grounded and meet or exceed the unit s Power Supply rating of 300VA CAUTION Do not remove or bypass the ground pin on the end of the ACcord This may cause RFI radio frequency interference to be induced into your playback system PAGE9 ...

Страница 10: ...into th AC Mains CAUTION Only plug the Power Supply into the AC Mains after the power coupler joining the processor and Power Supply has been installed and secured NOTE Once the unit has been connected to the AC Mains the following LEDs on the front panels should be checked for illu mination On the Power Supply Analog Power Digital Power On the Processor DAC Power Digital Power 0 Degree Source NOT...

Страница 11: ... recommend the balanced outputs of the Processor be used There are considerable sonic benefits associated with the use of balanced interconnection The XLRpin configuration is described below Pin 1 Pin 2 Pin 3 Ground Non inverting 0 Inverting 180 NOTE The two outputs can be used to different systems simultaneously feed NOTE If you decide to use the single ended analog outputs the type of interconne...

Страница 12: ...accept a signal from any digital source such as Compact Disc players Laser Disc players DATs or satellite receivers The REFERENCE 64 is also equipped with a single AT Tand single coax digital tape return input When a powered digital source is introduced to an input and that input is selected with the specific Input switch the corresponding signal LEDwill illuminate 5 Once you have completed the ne...

Страница 13: ... System Connection Diagram Digital components can connect to different inputs than are shown LOUDSPEAKERS KSA AMPLIFIER PREAMPLIFIER R L OUTPUT REFERENCE 64 I DAT DECK I SATELLITE RECEIVER il CD TRANSPORT DAT DECK PAGE 13 ...

Страница 14: ...nt at the AT Treceiver If no data is present at the AT T receiver the internal default logic automatically selects the coax input The use of the MONITOR button on the front panel selects the TAPEIN inputs on the rear panel The use of this input does not interfere with the input selection being sent to the Digital tape output NOTE The Tape input can also be used as an additional source input withou...

Страница 15: ...pacitive and have a bandwidth in excess of 10MHz to prevent drop out errors For best results with coaxial cable we recommend the AES EBU balanced format The AES EBU format is a 5 volt balanced digital transmission Because of the high voltage balanced for mat this system allows for accurate data transmission and has great sonic advantages over standard single ended coaxial or Tosh fiber optic termi...

Страница 16: ... normally induced into the system due to the recovery module that separates the data and the clock is eliminated The recovered clock is ignored and the clock in the transport will be the clock used in the Processor The use of the TIMESYNC input requires that the CD transport used be a Krell equipped with the TimeSync Special AT T ST output transmitter It also requires that the TimeSync output of t...

Страница 17: ...ture does eliminate the jitter normally encountered in the normal decoding of the digital data stream however the proprietary Krell DATARECOVERYAND JITTER RF_ ECTION MODULEreduces jitter to an almost unmeasurable level TimeSync provides an additional level of Jitter reduction NOTE The use of the TimeSync button without having an actual TimeSync input or a mismatched input different input selected ...

Страница 18: ...eptacle c Locate the key on the top of the AT Tcable d Remove the plastic cap from both ends of the AT Tcable e Slide the cable connector into the AT T receptacle with the key sliding into the designated slot f Gently push the connector into place depressing the internal spring and twist the outer collar clockwise to secure the connec tion g Use the same procedure for the transport and D A Process...

Страница 19: ...al input Toshiba fiber optic input Priority and Coaxial input Coaxial input INPUT FREQUENCY INDICATORS When the input signal locks with the Processor the correspond ing input frequency LEDwill illuminate The input frequency is automatically selected by the Processor As an example if you select the AT Tinput from a CDtransport the 44 1 KHz LEDwill illuminate FREQUENCY TYPICAL SOURCE 32 0 KHz 44 1 K...

Страница 20: ...ngs the master tape was recorded out of phase creating unusually poor sounding recordings The REFERENCE64 can shift the absolute output phase 180 degrees to correct for this anomoly To change the phase from 0 degrees to 180 degrees press the 180 DEG button To change back to normal phase press the 0 DEG button Utilizing the Phase Shifting can in some instances restore life to a previously dull soun...

Страница 21: ... 3 Turn ON your components remembering that the last compo nent to be energized should be your amplifier The amplifier should only be turned ON after all other components in the system have been on for at least two minutes This will insure that there will not be any large pulse created when the amplifier is turned on 4 Switch the source selector of your preamp to the position correlating to your c...

Страница 22: ...lities It will continue to improve over time Discrete compo nents are utilized in the analog output stage and the warm up period allows them to reach thermal equilibrium Your installation is now complete Should you have any further questions which are not covered in the remainder of this Refer ence contact your authorized Krell dealer We wish you many hours of listening fulfillment PAGE 22 ...

Страница 23: ...v digital format and has the additional benefit of balanced termination Q Will I damage my REFERENCE 64 if I leave the power ON all the time A No The Class A discrete analog circuits perform more consis tently once they reach thermal equilibrium This Processor has been designed to be left on at all times The REFERENCE64 draws less than 50 watts out of the AC mains socket NOTE For the protection of...

Страница 24: ...er Supply stability If you still have no sound turn off the power and contact your dealer Q I have some very fine audiophile interconnect cable which has superior sonic characteristics Can I use this for my coaxial digital input A You may experiment with any high quality cable Do note that most audio interconnect cable is not designed to carry the ultra high frequency information of the digital bi...

Страница 25: ... If these are not the cause speak with your dealer about obtaining different cabling If you are using fiber optics and source material and connections are not the problem speak with your authorized dealer Q Since I installed the Processor in my system I have a low level hum that increases as I turn up the volume There was no hum in my system until I added the Processor Is the Processor malfunction...

Страница 26: ...ON SHIELD PROCESSING KRELLwritten software calculated through 4 custom configured Serial Motorola 560001 processors running at 34MHz two per channel in series configuration LINEARITY 3dB at 90dB THD N 011 CHANNEL SEPARATION llldB at 1KHz ANALOG OUTPUT VOLTAGE 2 4 volts DIMENSIONS 19 10 WIDE 14 00 DEEP 5 63 TALL stacked with feet SHIPPING WEIGHT 54 pounds PAGE 26 ...

Страница 27: ...actory If you think there are problems with your unit please contact your dealer distributor or the factory immediately The operating voltage of this unit is determined by the factory and can only be changed by an authorized KRELLdistributor or the KRELL factory Any unauthorized voltage conversion will void the warranty Should the operating voltage of your REFERENCE 64 require changing contact KRE...

Страница 28: ...Krell Industries Inc 45 Connair Road Orange CT 06477 3650 TEL 203 799 9954 FAX 203 891 2028 E MAlLkrell krellonline com WEBSITE http www krellonline com 2001 Krell Industries Inc REF649303 ...

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