Wadia Digital DECODING COMPUTER User's Manual
Contents
1. DIGITAL CORPORATION Wadia 9 DECODING COMPUTER INFORMATION amp OPERATING MANUAL SOFTWARE LICENSE IMPORTANTI THIS AGREEMENT SETS FORTH LICENSE TERMS AND CONDITIONS FOR THE DigiMaster SOFTWARE The DigiMaster software is copvrighted and patented It is the proprietarv propertv of Wadia Digital Corp of River Falls Wisconsin Title to the Licensed Software is not transferred to the Customer Customer is granted a nonexclusive license to use the Licensed Software on a single Decoding Computer basis The Licensed Software cannot be shared among multiple Decoding Computers Each Decoding Computer must have Its own separatelv Licensed Software Customer may copy the Licensed Software in whole or in part only for backup and archival purposes Each copv shall include in readable format anv and all confidential proprietarv and copyright notices or markings contained on the original provided by Wadia Digital Corp At Wadia Digital Corp s sole discretion Wadia Digital shall provide Customer with updates of the Licensed Software Wadia Digital retains the right to provide the Licensed Software updates for a fee The customer may refuse to accept such Licensed Software updates CAUTION TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE TO REDUCE THE RISK OF ELECTRICAL SHOCK DO NOT REMOVE THE PRODUCT S COVER THERE ARE NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED2. LEVEL LEFT 100 MUTE LEVEL RIGHT 100 MUTE LEVEL There are 100 discrete output levels within the Wadia 95 digital volume control These 100 levels were selected to provide the listener with a smooth continuous output calibration The output levels are spaced at levels from 1dB to 1 5th dB In the primary listening range levels are typically spaced at 1 5 dB When the unit is plugged in it is at its lowest volume level LEVEL LEFT 00 LEVEL RIGHT 00 MUTE Indicates that there is no analog output present at the output connectors of the Wadia 9 From anv volume level Mute can be accessed bv pressing the MUTE button on the remote control Pressing MUTE again or either of the VOLUME buttons on the remote control will bring the unit out of Mute If one of the other two screens other than the LEVEL MUTE screen is selected from the remote control after about 5 seconds of displaving the information desired the information window will revert to displaving the LEVEL MUTE screen Wadia 9 DECODING COMPUTER WADIA 9 POWER SUPPLV The front panel of the Wadia 9 Power Supplv has no lights nor displavs anv information Wadia DIGITAL POWER SUPPLY WADIA 10 GLASS OPTICAL INTERFACE The front panel of the Wadia 10 Glass Optical Interface has a series of eight LEDs across its face When AC power is connected to it the first LED POWER is illuminated There are then a series of six LEDs which correspond to the six inputs
3. AES EBU format is provided through an XLR type connector When using this method of digital transmission be sure that the pin configuration on the associated equipment matches that of the Wadia 9 Pin 1 Ground Pin 2 Not Inverted Signal Pin 3 Inverted Signal AC Power Connector There is a standard 3 pin connector to which the AC cord should be connected which will provide power to the Wadia 10 Wadia 9 DECODING COMPUTER UNPACKING Unpack vour Wadia 9 Decoding Computer Wadia 9 Power Supplv and Wadia 10 Glass Optical Interface and keep all packing materials for future use To avoid damaging the connectors on the rear of the product or those on digital output cables never tip the product back in a way that would put stress on these connectors Carefully inspect the product for damage and flaws If any are found immediately contact your Wadia dealer SET UP AND INSTALLATION 1 2 Make sure that the Wadia 9 Decoding Computer is not plugged into the AC power supply and is disconnected from all associated equipment Place the Wadia 9 Decoding Computer on a flat stable surface and turn it onto either of its sides The finish of the metal work can be protected by first placing a soft cloth or towel down onto which the Wadia 9 can be placed While the Wadia 9 is still on its side screw in the four pointed feet into the bottoms of the four corner posts Turn the Wadia 9 upright and place it in the desired location Four
4. LEVEL LEFT 72 LEVEL RIGHT 75 etc Volume can then be adjusted with this level offset LEVEL LEFT 72 LEVEL RIGHT 75 LEVEL LEFT 73 LEVEL RIGHT 76 LEVEL LEFT 74 LEVEL RIGHT 77 etc Finallv when vou want to return the levels of both channels to an equal setting again using the above example bv pressing the FADE RIGHT button the level of the left channel will rise until it is at the same level as the right channel LEVEL LEFT 75 LEVEL RIGHT 77 LEVEL LEFT 76 LEVEL RIGHT 77 LEVEL LEFT 77 LEVEL RIGHT 77 Continuing to press the RIGHT FADE button would then cause the level of the right channel to diminish LEVEL LEFT 77 LEVEL RIGHT 76 LEVEL LEFT 77 LEVEL RIGHT 75 LEVEL LEFT 77 LEVEL RIGHT 74 etc TIME BASE CORRECTION Pressing these two buttons once simultaneously calls the INVERT EMPHASIS TIME BASE CORRECTED screen to the information window on the front of the Wadia 9 Pressing them again toggles between the AUDIO MODE and the VIDEO MODE During all purely listening sessions the AUDIO MODE should always be in the signal path When watching a Laser Disc or other video format which has a digital audio output that is connected to the Wadia 9 the real amount of time that the audio signal is delayed as it goes through the process of Time Base Correction in the AUDIO MODE may result in a discrepancy between what is occurring visually on the screen and what is being heard through the speakers For this reason it is possible to chang
5. RATE 32 kHz 44 kHz and 48 kHz These three designations correspond to the sampling rates of the three consumer digital audio formats When a digital source that is connected to one of the inputs of the Wadia 9 Decoding Computer is received and recognized bv the Wadia 9 and the sampling rate is locked onto bv the Wadia 9 the appropriate sampling rate will illuminate Digital radio broadcasts are tvpicallv in the 32 kHz format Compact Disc is in the 44 1 kHz format indicated on the displav as 44 kHz due to space limitations and DAT is in the 48 kHz format Recentiv introduced consumer digital recording formats are likelv to be in the 32 kHz format although some mav be at the higher sampling rates The Wadia 17 Analog to Digital converter for example can operate at the 48 kHz sampling rate As a result its output when connected to the Wadia 9 Decoding Computer would illuminate the 48 kHz sampling rate displav The second screen indicates whether the signal has been inverted INVERT whether the source has been emphasized EMPHASIS and the Signal Qualitv of the digital signal entering the Wadia 9 from a digital source INPUT SIGNAL LEVEL 1 for example The second screen also indicates when the Time Base Correction circuit has been emploved INVERT EMPHASIS AUDIO MODE INVERT EMPHASIS VIDEO MODE INVERT Indicates digital inversion plus becomes minus and minus becomes plus has been accessed through the remote control A
6. bases are provided to be placed underneath the four pointed feet for the protection of the furniture upon which the product is to be placed Repeat steps 2 3 and 4 for the Wadia 9 Power Supply and the Wadia 10 Glass Optical Interface Connect one end of the power supply cord to the receptical on the rear of the Wadia 9 Power Supply and the other to a wall outlet Do the same for the Wadia 10 Glass Optical Interface Connect the three umbilical cords Left Analog Power Right Analog Power and Digital Power from the back of the Wadia 9 Power Supply to the matching connectors on the back of the Wadia 9 Decoding Computer Connect the single ended or balanced analog outputs of the Wadia 9 Decoding Computer to the input of a pre amplifier or power amplifier Please make certain that the power to the preamplifier or amplifier is not on or that the amplifier is not connected to the loudspeakers before making this connection Connect a digital source to the Wadia 9 The Wadia 9 Decoding Computer powers up at the lowest volume setting Pressing the VOLUME h button on the remote control will bring the unit out of the lowest volume level no volume Adjust the digital volume control to a safe level i e a setting near the bottom of the scale This can be re adjusted after the music starts to play Wadia 9 DECODING COMPUTER 10 FOR USE WITH A PREAMPLIFIER If the Wadia 9 Decoding Computer is to be used with a preamplifier and if the volu
7. connected to a pre amplifier to adjust volume then the level should be set at its maximum 100 WADIA 5 WADIA 9 DISPLAV ON OFF Some listeners prefer to listen in an environment that is as dark as possible There is some psvcho acoustic truth to the fact that when vour brain does not have to deal with the information presented to it by the sense of sight it is more capable of allowing the cues it is presented with through the sense of hearing to more easilv concentrate on the listening experience Bv pressing this button the user can extinguish the information window The information in the window will re illuminate whenever a button is pressed that activates the displav Following about 5 seconds of illumination the displav will once again go dark WADIA 5 8 WADIA 9 INPUT SELECT Pressing this button will scroll through 1 2 3 1 etc the three inputs of the Wadia 9 WADIA 10 INPUT SELECT Pressing this button will scroll through 1 2 3 4 5 6 1 etc the six inputs of the Wadia 10 LEFT and RIGHT FADE for a digital volume control is similar to Balance for an analog volume control Let us for example assume that vou are listening at a level of 75 in both channels LEVEL LEFT 75 LEVEL RIGHT 75 and vou would like to adjust the balance between the left and right channels Bv pressing the FADE LEFT button the level of the left channel will begin to diminish LEVEL LEFT 74 LEVEL RIGHT 75 LEVEL LEFT 73 LEVEL RIGHT 75
8. if there is a disturbance in the Time Base Information that precludes a 20 bit signal from ever reaching those DACs With the Wadia 9 Wadia introduces to digital audio the concept of actually correcting for Time Base Errors that may have occurred in the digital source or transmission method between that source and the Wadia 9 as well as in the re generation of the clock information within the Wadia 9 The Time Base Correction circuit we have chosen results in less than 1 part per million of disturbance to the Time Base Information of the digital signals received by the Wadia 9 This level of performance is unprecedented in digital consumer audio Because of the amount of real time which it takes for the Time Base Correction circuit to achieve its desired result it is not appropriate for it to be used when decoding the audio which goes along with a video source As a result we have provided for a VIDEO MODE which should be employed when listening to a video source whose digital audio is being decoded by the Wadia 9 Under normal listening conditions involving audio only sources the AUDIO MODE should be selected for the highest sound quality level The third screen which is the default screen and will be seen unless information from some other screen is required and accessed through the remote indicates the relative volume level of the Wadia 95 output LEVEL LEFT 100 LEVEL RIGHT 100 and whether or not the unit has been muted
9. NT SAFETV INSTRUCTIONS To get the best performance from vour Wadia 9 Decoding Computer and for vour own safetv please read and follow these important safetv instructions 1 Before operating the Wadia 9 Decoding Computer please read all operating and safetv instructions 2 Keep all operating and safetv instructions for future reference 3 Always heed all warnings and cautions on the product and in the Owners Manual 4 Alwavs follow all instructions for the operation and use of the Wadia 9 Decoding Computer 5 Never use the Wadia 9 Decoding Computer near water 6 Never place the Wadia 9 Decoding Computer near heat sources such as radiators fireplaces stoves or other appliances that produce heat Avoid placing the Wadia 9 Decoding Computer where it will be subject to direct sunlight or low temperatures 7 The Wadia 9 Decoding Computer should only be connected to a power supply as directed on the rear panel 8 This product is equipped with a three prong AC mains power cord which includes an earth ground connection To prevent shock hazard all three connectors must always be used If your electrical outlets will not accept this type of plug an adaptor may be purchased If an adaptor is necessary be sure it is an approved type and that it is used properly supplying an earth ground If you are not sure of the integrity of your home s electrical system contact a licensed electrician for assistance 9 AC extension cords n
10. PERSONNEL NOTICE This equipment generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio and television reception lt has been type tested and found to comply with the limits for Class B computing devices in accordance with the specifications in Subpart J of Part 15 of FCC Rules which are designed to provide reasonable protection against such interference in residential installation However there is no guarantee that interference will not occur in a particular installation If this product does cause interference to radio or television reception which can be determined by turning the equipment on and off the user is encouraged to try to correct the interference by one or more of the following measures Reorient the receiving antenna of the radio or television Relocate the Decoding Computer with respect to the radio or television Move the Decoding Computer away from the radio or television Plug the Decoding Computer into a different outlet so that the Decoding Computer and radio or television are on different branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Prob
11. The last LED is DATA which will illuminate when an input is selected that has a digital source connected to it Wadia 9 DECODING COMPUTER REMOTE CONTROL The remote control for the Wadia 9 Decoding Computer can also be used to operate the functions of the Wadia 5 PowerDAC the Wadia 7 Compact Disc Transport and the Wadia 10 Glass Optical Interface Only the functions that controlled on the Wadia 9 and Wadia 10 will be described in this Owner s Manual DELE VU 000 00 INVERT ON OFF VOLUME 7 2 9665 650 566 00 000 OD OQ RIGHT 00 OO OO 6 0 AUTO SPACE OPEN CLOSE JODOODOO OO Wadia DIGITAL DISC REMOTE CONTROL MUTE Places the Wadia 9 Decoding Computer in out of mute Mute on the Wadia 9 Decoding Computer is at absolute zero or at no volume Pressing the MUTE button again or either of the VOLUME buttons will take the unit out of MUTE INVERT Selects digital inversion of the music signal The first time this button is pressed it calls the screen to the information window and displays it Pressing this button again while the screen is visible in the information window will change the status from or to INVERT Wadia 9 DECODING COMPUTER VOLUME These kevs allow the digital volume control level to be decreased or increased on the Wadia 9 Decoding Computer There are 100 discreet levels to this volume control varving in size from 1 5 dB to dB per step If the Wadia 9 is to be
12. UP RESET Wadia 9 Decoding Computer is totally reset upon power up If the system ever refuses to operate please turn off the amplifier and then disconnect the AC power cord from the Wadia 9 Power Supply After a minimum of 30 seconds power up the system and all subsystems will be totally reset The volume will be reset to zero Remember the Wadia 9 Decoding Computer is a computer and as with any computer an occasional reset may be necessary CARE AND MAINTENANCE To clean the Wadia 9 Decoding Computer use a soft cloth moistened with plain water Don t apply water dusting sprays solvents abrasives or cleaning fluids directly to the chassis Make sure that the remote sensor window on the front of the product and the remote control s projection lens are kept clean and dust free When the remote control s batteries need to be replaced always replace both batteries at the same time Always dispose of batteries in a manner that is considerate of the environment Wadia 9 DECODING COMPUTER SERVICE If you have a service problem immediately contact your Wadia dealer It is important that your Wadia 9 Decoding Computer be serviced only by an authorized Wadia service facility This will ensure that proper repairs are made and that your Wadia 9 warranty stays in effect throughout the warranty period BATTERIES The Wadia 9 Wadia 10 are completely controlled by the Remote Control If these products do not respond to comma
13. al will not pay for damage caused to other audio components caused by the failure of a Wadia 9 Decoding Computer within the limits allowed by State Law 5 All repairs performed after the warranty period has expired will be billed to the owner and will carry a 90 day warranty on parts and labor 6 All repairs must be performed by an authorized service facility or by Wadia Digital 7 This oroduct is onlv warrantied in the country of original sale by Wadia Digital Wadia 9 DECODING COMPUTER SPECIFICATIONS Resampling Rate Decoding Software Resolution Digital Volume Control Range Passband Ripple CPU Power Signal Inverting Math Resolution Inverting Switch Modularitv Upgradeabilitv Dither Output Level 0 dB ref Output Impedence Channel Isolation at 1 kHz Channel to channel phase error PC Boards Power Distribution Power Supplies Wadia 9 Power Supplv Wadia 10 Enclosures Weight Wadia 9 Decoding Computer Wadia 9 Power Supplv Wadia 10 Dimensions Wadia 9 Decoding Computer Wadia 9 Power Supplv Wadia 10 64 Times DigiMaster Accomplished in software and hardware bv doing 16 times Spline resampling in DSP and 4 times of 1st order LaGrangian resampling in the DACs 22 bits 50 dB DC 20 kHz None Monotonic 128 MIPS Digital domain 240 dB 40 bits Digital Domain Programmable Gate Array Chip or hardware options and upgrades On round offs 13 dBV c 1 ohm both single ended an
14. d balanced gt 110 dB lt 0 5 degrees at 10 kHz 4 1 signal carrying boards in the Main Unit Massive multiple power plane layers 3 Toroidal Transformers Toroidal Transformer The Wadia 9 Decoding Computer the Wadia 9 Power Supply and the Wadia 10 Glass Optical Interface are of Airborne computer quality machined from a solid block of aluminum Detuned for Lenz s Law and package parasitic resonances Side panel skin effect transitions lt 20 Hz 21 Ibs 19 Ibs 13 Ibs 3 637 High 17 Wide and 14 Deep 3 637 High 17 Wide 9 Deep 3 637 High 17 Wide and 9 Deep Specifications subject to change without notice 19 di Wadia DIGITAL The Leader in Signal Conversion Wadia 1556 Woodland Drive Saline MI 48176 734 786 9611 www wadia com
15. e from the AUDIO MODE of Time Base Correction circuit to the less time consuming VIDEO MODE of the Time Base Correction circuit Even when this is done the input stage of the Wadia 9 operates in a manner that is superior to the methods of re clocking the digital signal that it receives by a factor of 2500 1 over other commonly utilized methods Still because we believe that all pure audio listening should be done with the AUDIO MODE of the Time Base Correction circuit in the signal path we have made it a two button push to get out of this mode so that it is unlikely that you will remove it from the signal path accidentally Wadia 9 DECODING COMPUTER REAR PANELS WADIA 9 DECODING COMPUTER ANALOG OUTPUTS For maximum convenience and functionalitv the Wadia 9 Decoding Computer includes both single ended and balanced output connections The single ended connectors are the gold plated RCA tvpe The balanced connectors are professional qualitv XLR type Pin 1 GROUND Pin 2 signal Pin INVERTED SIGNAL DIGITAL INPUTS For maximum performance the Wadia 9 Decoding Computer provides three Glass Optical digital inputs lt is our assumption that a CD Transport with Glass Optical Output will be connected to one of these inputs Up to six non Glass Optical Outputs can be connected to a Wadia 10 and the Glass Optical Output of the Wadia 10 can then be connected to the second input of the Wadia 9 The third input of the Wadia 9 can be used fo
16. ia 9 has three Glass Optical Inputs This is to ensure the highest quality digital interconnection between it and digital sources Certainly if a digital source component has a Glass Optical Output it should be connected to the Wadia 9 directly through this connection method There are many digital source components however which do not have a Glass Optical Output Rather than risk the potential contamination of the circuitry of both the Wadia 9 and components further along in the rest of the system by ground noise from digital source components Wadia requires that all digital source components that do not have Glass Optical Outputs be connected to the Wadia 9 through the Wadia 10 Glass Optical Interface The Wadia 10 has six digital inputs four coax via BNC connectors and one each AES EBU via XLR connector and EIAJ standard optical via a Toslink type connector and a single Glass Optical digital output Through this device digital source components that do not have Glass Optical Outputs can be connected to the Wadia 9 Coaxial digital interconnection is available through a high quality BNC type connector If this method of interconnection is chosen it would be recommended that the cable of your choice be terminated with a BNC type connector A BNC to RCA adapter is provided with the Wadia 10 Glass Optical Interface for those who would like to experiment with a number of coaxial cables prior to having one terminated with a BNC connector The
17. lems This booklet is available from the US Government Printing Office Washington DC 20402 Stock No 004 000 00345 4 CAUTION Use of all controls adjustment or performance of procedures other than specified herein may result in hazardous radiation exposure A Table of Contents IMPORTANT SAFETY 7 FRONT PANEL i cco a 8 FRONT PANEL CONTROLS L 9 REMOTE CONTROL i iii anna in ina uat 12 REAR PANEL S g 14 UNPACKING 2 22 16 SET UP AND INSTALLATION 16 POWER CONNECTION 2 222 22 17 POWER UP 222 2 22 2 1 1 117 CARE AND MAINTENANCE 17 SERVICE is ii 18 BATTERIES cessi 18 WARRANT ini 18 2 19 inspiration Wadia F Moses at age 35 hank you for choosing the Wadia 9 Decoding Computer Manufactured under strict quality control standards the Wadia 9 is a superb example of state of the art digital technology We encourage you to read this manual thoroughly and to carefully follow all safety and operating instructions used properly this product will provide you with years of musical enjoyment Wadia 9 DECODING COMPUTER IMPORTA
18. me is to be controlled bv the preamplifier and not the Decoding Computer then the Wadia 19 should be set for it s maximum volume output To do this you must press the VOLUME button on the remote control until the LEVEL LEFT and LEVEL RIGHT are at their maximum setting of 100 This will bring the outputs to the maximum level so that the preamplifier can control the svstem AC POWER The proper voltage for this product is indicated on the AC Entrv Module on the rear panel of the chassis Double check proper voltage operation to ensure that the voltage at which this product is manufactured to operate is consistent with the AC line voltage in your country This Wadia product has been manufactured to be used at one voltage only If you plan to use this product at a voltage which is different from the one indicated on the chassis the product must be returned to the Wadia factorv for modification NOTE The use of this product at a voltage other than that specified on the unit will almost certainiv cause irreparable damage to the Wadia 9 and is not covered bv the Wadia warranty Connect the linecord supplied with the system first to the Wadia 9 on the AC Entry Module and then to the service outlet Unplug the unit immediately if it becomes wet In the event of fuse failure locate the FUSE PULL tab on the AC Entry Module Replace the fuse only with the exact type and size fuse originally provided with the Wadia 9 POWER
19. nds from the Remote Control the useful life of the batteries may have expired Remove the back cover of the Remote Control there are 4 screws in the 4 corners of the rear panel on the Remote Control and replace the two AA batteries WARRANTY This warranty covers the Wadia 9 Decoding Computer Wadia Digital warrants that this product shall be free from defects in materials and workmanship for 5 Years for all parts of the product excluding batteries The warranty period begins at the time the product is first shipped from Wadia Digital and is subject to the following requirements and understandings 1 The product must not have been modified in any manner whatsoever or the warranty is immediately voided 2 The product must not have been stored in a humid damp environment nor subjected to weather water or salt spray 3 During the warranty period Wadia Digital will repair the Wadia 9 to working order or at Wadia s option replace a defective Wadia 9 with a similar available product at no cost to the owner for labor materials and shipping charges from Wadia Digital River Falls Wisconsin 4 Wadia Digital shall not under any circumstances be liable for any incidental or consequential damages arising from the loss of property or other damage or losses due to the failure of a Wadia 9 Decoding Computer Wadia Digital will not pay for loss of use or inconvenience caused by the failure of a Wadia 9 Decoding Computer Wadia Digit
20. ot recommended for use with this product If an extension cord must be used be sure that it is an approved type and has sufficient current carrying capacity to power this product Wadia 9 DECODING COMPUTER FRONT PANELS LEVEL LEFT 100 MUTE LEVEL RIGHT 180 MUTE WADIA 9 DECODING COMPUTER The front panel of the Wadia 9 Decoding Computer is simple and elegant with onlv a single information window with three individual screens to indicate the status of the unit All functions are accessed through the remote control When the digital power supplv umbilical cord is connected to the Wadia 9 the displav window will illuminate If no digital source is connected to Input 1 the information window will provide the information INPUT 1 NO DATA As mentioned above the information window has three individual screens which indicate the status of the unit The first screen indicates the Input selected and the Sampling Rate of the digital source connected to that input INPUT 1 NO DATA INPUT 2 SAMPLING RATE 44 KHZ Wadia 9 DECODING COMPUTER INPUT The Wadia 9 Decoding Computer has 3 Glass Optical digital inputs The input that is selected through the remote control will be indicated in the information window Again if no source is connected to the input then NO DATA will also appear If a digital source is connected to the input selected the information window will indicate the sampling rate of the source SAMPLING
21. r accepting the output of an Analog to Digital Converter into which vou have connected vour analog sources In this wav the Wadia 9 can operate as a complete control center source select and volume control for an entire home entertainment svstem 100 120 220 240 WC INPUT 48 WATTS USE 2 FUSE ONLY DESIGNED MANUFACTURED IN THE USA WADIA 9 POWER SUPPLY AC Power Connector There is a standard 3 pin connector to which the AC cord should be connected which will provide power to the Wadia 9 POWER SUPPLY There are then three cables which come out of the back of the Power Supply and should be connected to the power supply connectors on the back of the Wadia 9 itself These three power supply cables are labeled LEFT RIGHT and DIGITAL on the rear of the Power Supply The three connectors are all labeled POWER on the rear of the Wadia 9 itself under the appropriate headings DIGITAL LEFT ANALOG and RIGHT ANALOG Like all digital audio products best performance is achieved only after the product has been on for 72 or more hours Do not connect or disconnect the power cord unless the Wadia 9 Decoding Computer is not connected to another component in the system or unless the amplifier is either turned off or not connected to the loudspeakers Wadia 9 DECODING COMPUTER 100 120 220 240 wc INPUT 25 WATTS USE 1 AMP FUSE AES EBU COAX 4 COAX 3 Coax 2 Coax Y INPUT WADIA 10 GLASS OPTICAL INTERFACE o The Wad
22. s there are no standards for correct polaritv some discs and even certain songs within a disc will sound better tighter bass more distinct image when the signal is digitallv inverted EMPHASIS Some discs have been encoded with an equalization process called emphasis While giving better measurements these discs alwavs sound worse than thev would had this process not been utilized All compact disc players recognize discs that have been encoded in this way and then de emphasize the digital signal prior to the digital to analog conversion The Wadia 9 notifies the user that a disc has been encoded in this way through the illumination of EMPHASIS Wadia 9 DECODING COMPUTER AUDIO MODE VIDEO MODE Throughout the development of Wadia s product line caution has alwavs been maintained when dealing with component parts circuit paths transmission formats enclosures and anvthing else that can negativelv affect the Time Base Information encoded in a digital signal This is because digital itself is Time Based Format and anv disturbance of Time Base Information will result in less than perfect information retrieval Disturbances of the Time Base of as little as 1 1 000 000 000 of a second will result in less than 18 bit performance irrespective of whatever component parts are used and whatever their static specifications might be That is to sav that the utilization of 20 bit DAGs in a product will not result in 20 bit performance
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