Compact Disc Player

Budget entry level CD Player with Remote Control Burr-Brown 20 bit SigmaDelta Digital to Analogue converter Low output impedance Separate power regulators for analogue and digital sections Informative display with switchable track, time and repeat Repeat mode for single track or entire CD Random play
Background Over the years NAD has built up an enviable reputation for building fine CD players offering outstanding value for money. The Model 522 will further enhance this reputation with its excellent performance and ease of use at a very keen price. As always, sonic performance is the first priority at NAD. Rather than adding many seldom used features or going for overkill on a single aspect of the design, the NAD engineers have concentrated on the design itself to offer the best performance possible at the price. Behind the deceptively modest front panel lies sophisticated circuitry. Features and Circuitry RANDOM gives the listener a random selection of all tracks on the disc in play and REPEAT allows repeat playing of the disc or individual tracks. Individual tracks are easily accessed by SKIP (Forward and Back). SCAN (Forward and Back) gives an aural prcis of individual tracks, giving the listener the opportunity to reach specific sections of the track. The understated yet comprehensive display gives the listener all the vital information required to access and enjoy the selected music. The track number is displayed and for those who regularly transfer CDs to cassette tape, the button displays the current time elapsed or remaining for complete CDs or individual tracks. A calendar type section in the display gives immediate visual information how many tracks in total there are on the CD. The Model 522 comes supplied with a full function remote control, offering all of the features described above from the comfort of your listening chair. On top of that, the remote control handset gives you direct track access as well. Separate power regulators for the digital and analogue sections isolate the two electrically, and furthermore, careful layout of the PCB tracks around the Digital-to Analogue converter helps to contain RF interference. For the NAD 522 a Burr-Brown 20 bit SigmaDelta Digital-to-Analogue converter chip was chosen for its excellent low level linearity. Metal film resistors and polypropylene capacitors are used in key areas to ensure a highly accurate frequency response. Unusual at this price level, high quality 5532 op-amps are used instead of the much lower grade and type normally found at this price level and higher. Apart from the single output capacitor, no other capacitors are used in the signal path. The output impedance is very low at 120 , making the NAD 522 less sensitive to cables or the ancillary equipment it is partnered with. Truly excellent sound quality is difficult to find at this price, let alone with the added convenience of remote control. Anyone interested in a high performance CD player without frills should put the NAD 522 at the top of their shortlist.
SPECIFICATIONS - NAD 522 Disc capacity Programming capability Digital-to-Analogue conversion Digital filter Analogue filter Frequency response 5Hz-20kHz De-emphasis error THD (at 0dB, 1kHz) Dynamic range Linearity Signal to noise ratio, A-weighted, Channel separation Wow and Flutter Output impedance Output level @ 0dB Digital error correction Remote control Physical specifications Dimensions (W x H x D) Net weight Shipping weight Single disc 120mm or 80mm 21 Tracks Sigma Delta 20 bit resolution 8 x oversampled 4 pole active 0.5dB <0.3dB 0.0025% 96dB +0.5dB; 0 to -90dB 100dB 110dB >110dB >80dB Unmeasurable (Quartz accuracy) 120 2.2V rms. CIRC with double error correction in C1 and C2 Yes

De-emphasis on De-emphasis off @ 1kHz @ 10kHz
435 x 70 x 285 mm 4.1kg 4.9kg
NOTE: NAD reserves the right to change specifications or design at any time without notice. All specifications are those in effect at time of printing.

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OWNERS MANUAL MANUEL DINSTALLATION BEDIENUNGSANLEITUNG MANUAL DEL USUARIO MANUALE DELLE ISTRUZIONI MANUAL DO PROPRIETRIO BRUKSANVISNING
REAR PANEL CONNECTIONS (fig. 1)
FRONT PANEL CONTROLS (fig. 2)
NAD 522 COMPACT DISC PLAYER
disc drawer. Place the CD within the large circular recess in the drawer, with its transparent playing surface facing down. The label must face UP. CD-3 discs (3-inch CD singles) can be played without the aid of an adapter. Place the disc in the drawer, centered in the smaller circular recess, with its label facing UP. NOTE: This player was not designed to accommodate a damping disc placed on a CD, nor two CDs stacked together. It plays audio CDs, but not discs identified as CD-V, DVD, CD-I, CDROM, or PHOTO CD. 3. DISPLAY. The display provides information about playback status and about the laser pickups location on the disc. The displayed track/time information is obtained by reading inaudible sub-codes in the disc. Track number Each disc is segmented into numbered tracks when the recording is made; typically each numbered track will correspond to a different song, symphonic movement, etc. These track numbers are identified on the CD package and are encoded in the disc by its manufacturer. In some CDs, at the manufacturers option, tracks may be sub-divided into sections identified by Index numbers. This player does not display Index numbers. Time Normally this display shows the time elapsed since the beginning of the current track. Using the TIME button you can switch the display to show the playing time remaining to the end of the disc. When you load a different disc and use the OPEN button to close the disc drawer, the display shows the number of tracks and the total playing time of all the tracks on the disc. Status A right-pointing arrowhead , located near the left edge of the time display, glows during PLAY. Two vertical bars indicate that the player is in PAUSE. In STOP mode the display reverts to showing the number of tracks and total playing time of the disc. no disc glows in the display when no disc is present or when you load a disc that cannot be read (because it is dirty or is upside-down). REPEAT ONE glows in the upper-left corner during repeat-play of a single track. REPEAT ALL glows during repeat-play of the entire program or disc. REMAIN glows in the top centre area of the display if you have pressed the TIME button to show the remaining time in the track, disc. Remote receiver. An infrared sensor, located the right-hand portion of the display window, receives commands from the remote control. There must be a clear line-of-sight path from the remote control to
A NOTE ON INSTALLATION Install the Compact Disc player on a level, vibrationfree surface. (Severe vibration, or operation in a tilted position, may cause the player to mis-track.) The player may be stacked with other stereo components, as long as there is adequate ventilation around it. If the player is placed in close proximity to a radio tuner (AM or FM), a VCR, or a television set, the operation of its digital circuits may produce static that would interfere with reception of weak broadcast signals. If this occurs, move the CD player away from other devices or switch it off when viewing or listening to broadcasts. PLAYING COMPACT DISCS A SIMPLE APPROACH 1. Connect a stereo cable from the L (left) and R (right) Line Output jacks to the corresponding CD inputs on your amplifier. 2. Plug in the AC power cord. 3. Press the green POWER button to turn on the player. 4. Press OPEN to open the disc drawer. 5. Place a CD, label side up, in the trays circular recess. Be certain that the disc is centered within the recess. 6. Press PLAY/PAUSE. The drawer closes automatically, and the disc begins to play. 7. At any time you may press SKIP or to select different tracks on the disc. 8. Press PLAY/PAUSE if you want to stop play temporarily while keeping the pickup at its current position on the disc. Press PLAY/PAUSE again when you want to resume playback. Press STOP if you want to end play and re-set the pickup to the beginning of the disc. REAR PANEL CONNECTIONS (fig.1) 1. LINE OUTPUT. Connect a cable from these jacks to your amplifier. Plug one end of a stereo audio cable into the L (upper) and R (lower) output jacks. Connect the other end of the cable to your stereo amplifiers CD input, or to any other line-level input jacks (such as the AUXiliary inputs). Do NOT connect this cable to the amplifiers PHONO input jacks. 2. AC LINE CORD. Connect this power cord to an AC mains wall outlet or to an AC convenience outlet at the rear of your amplifier. FRONT PANEL CONTROLS (fig.2) 1. POWER ON/OFF. Press this green button to switch on the power to the disc player. Press again and release to switch the power off. 2. DISC DRAWER. To play a disc, press the OPEN button to open the

this window; if that path is obstructed, the remote control may not work. 4. OPEN. Press this button to open the disc drawer, and press it again to close the drawer. If this button is pressed while a disc is being played, the playback will stop, the pickup will re-set to the beginning of the disc, and the drawer will open. When the disc drawer is open, the drawer-closing mechanism can also be activated by pressing PLAY or by gently pushing the drawer inward. CAUTION: The disc drawer is opened and closed by an internal motor. Do not close the drawer by hand with the power off. When the drawer closes, the player scans the discs table of contents and displays the number of tracks and total playing time on the disc. If you press PLAY to close the drawer this display is skipped, and play commences immediately at Track 1. 5. PLAY/PAUSE. This dual-function button alternates between starting and stopping playback. Press to start play or to resume play after Pause. During play, press this button to stop playback temporarily, keeping the laser at its current position on the disc. The PLAY mode is identified by a right-pointing arrowhead in the display. In the PAUSE mode is identified by two vertical bars. To resume playback at the exact point where it stopped, press PLAY/PAUSE again. If you dont want to resume play at the same point, you may use the SKIP and SCAN controls to cue the pickup to a different starting point before pressing PLAY again. 6. TIME. The TIME button has two modes, as follows: TIME: the elapsed time since the beginning of the current track, in minutes and seconds. (This is the default setting, selected automatically when the player is turned on.) REMAIN (track number blank): the total playing time that remains until the end of the disc and the total number of remaining tracks (including the current track). During program play the remaining time in the program is shown. 7. STOP. This button stops play, cancels any repeat-play cycle, and re-sets the pickup to the beginning of the disc. The display reverts to showing the number of tracks and total playing time on the disc. 8. REPEAT. This button engages an endless-repeat cycle. Press the Repeat button once to select the REPEAT ONE mode, in which only the current track is repeated over and over again. Pressing the Repeat button once again selects the REPEAT ALL mode, in which the entire disc is played from beginning to end, over and over again. Press the Repeat button a third time to cancel the repeat cycle and return to normal operation. 9. RANDOM. Pressing RANDOM will play all the tracks on the CD in a random order. Press RANDOM either from the Stop or the Play mode and the 522 will play the tracks on the CD in random order until all the tracks have been played. Press RANDOM button again to cancel Random play and return the 522 to the normal Play mode. When the 522 is in Random mode RANDOM will be shown in the Display Panel. 10. SCAN BACK The SCAN button causes the optical pickup to scan backward through the recording at high speed. This button works only while the player is in PLAY or PAUSE. After a STOP command, or after loading a new disc, you must press PLAY before the scan circuit will work. If the scan is initiated while the player is in PAUSE the scan is silent, approximately 15-20 times faster than playing speed. If the scan is initiated during PLAY it is much slower (approximately three times playing speed), and the music will be heard in fragmentary form at reduced volume as the player scans through it. Use this audible scan to cue the player precisely to the spot where you want to resume play. If you scan back to the beginning of the disc while playing Track 1, the player automatically reverts to normal playback. 11. SCAN FORWARD The SCAN button causes the optical pickup to scan rapidly forward through the music. The behavior of this function is similar to SCAN. If you scan forward to the end of the disc while playing the final track, the scan will stop and the Time display will show the table of contents. (There is no wrap-around mode.) 12. SKIP BACK The SKIP button causes the laser to jump backward to the beginning of each numbered track on the disc. The first press skips back to the beginning of the current track. Press SKIP twice to skip back to the previous track. Continuous pressure will cause the player to skip tracks repeatedly, concluding at the beginning of the disc (Track 1). Pressing SKIP once during play causes the pickup to jump back to the beginning of the current

track and play it again. To access the previous track while in Play you must tap SKIP twice in rapid succession, once to reach the beginning of the current track and again to jump to the previous track. 13. SKIP FORWARD During play, pressing SKIP will jump the laser to the beginning of the next track and resume play there. Thus, to sample each song on a disc, press PLAY and then tap SKIP after youve heard a few seconds of each track. REMOTE CONTROL A wireless remote control is provided with your compact disc player, enabling you to operate playback functions from the comfort of your chair or from virtually anywhere in the room. For reliable operation there should be a clear lineof-sight path from the remote control to the front of the CD player. If the player does not respond to remote commands, it may be that this line-of-sight path is obstructed by clothing, paper, or furnishings. Numeric keypad Most of the buttons on the remote control handset have the same effect as the corresponding buttons on the front panel of the disc player. In addition the handset is equipped with a direct-entry numeric keypad, which causes the player to jump directly to the beginning of a numbered track and commence play. Thus to play Track 5, simply press 5. To play Track 23 press +10, +10, 3. Installing and replacing batteries The remote control requires two 1.5-volt AAA-size (i.e. UM-4 or IEC RO3) cells. Alkaline cells are recommended, to obtain maximum operating life. To open the battery compartment, place your fingertip in the recess on the rear of the remote control , push against the flexible edge of the battery cover and lift the cover upwards. Install fresh cells, orienting them as shown on the diagram within the compartment. The coil springs should contact the (-) end of each cell. Push the battery compartment cover back and press gently until it latches. In some cases, poor operation may be caused by corrosion or fingerprint oil on the battery contacts. Remove both cells, rub the metal contacts at both ends of each cell with a clean cloth or a pencil eraser, and re-install the cells, being careful to orient them correctly. MAINTENANCE At periodic intervals, open the disc drawer and wipe with a damp cloth to remove any loose dust. HANDLING COMPACT DISCS Handle Compact Discs with care. The playback of a disc will not be impaired by small dust particles, a few light fingerprints, or slight scratches. But large scratches, or a thick layer of oily fingerprints, can prevent the player from tracking the disc. (Incidentally, although the tracking laser plays the disc through its clear side, the actual data surface is embedded directly beneath the label, protected only by a very thin coating of lacquer. So a scratch that cuts through the label may damage the disc more than a similar scratch on the transparent playing surface. Thus you should treat both surfaces of the disc with care.) Severe scratches or fingerprints may cause the player to mis-track (skipping ahead, or repeating the same passage). Less severe damage may produce very brief bursts of high-frequency noise. The tracking and error-correction circuits of this NAD CD player are unusually sophisticated, providing secure tracking of flawed discs that are unplayable on some other players. Nevertheless, the discs should not be abused or handled carelessly. For best results, grasp the disc only by its edges. Another safe method is to put a finger in the center hole, using the thumb at the edge to hold the disc steady. Each disc should be kept in its protective storage case when not in use. To open the standard Philipstype plastic CD case, grasp the top and bottom of the case with the fingers and thumb of the left hand; then grasp the left and right edges of the case with the fingers and thumb of the right hand, and pull the case open with the right thumb. The disc is held in place within the case by an expansion hub in its center hole. To remove the disc, press the hub with a finger to release the disc, then lift it out by gripping its edges between the fingers and thumb. To replace the disc in the case, simply align its center hole with the hub and press the disc onto the hub. CLEANING DISCS Soiled discs may be cleaned by wiping with a soft cloth, either dry or moistened with water. Do NOT use conventional LP record-cleaning products (cleaning solutions, sprays, treated cloths, or antistatic preparations), nor any kind of chemical solvent (alcohol, benzene, et al). A severely soiled disc may be washed in a warm-water spray, possibly with a small amount of a mild kitchen detergent added, and then wiped dry with a clean, soft towel. When cleaning the disc, use only RADIAL strokes (from center to edge). Never use a circular wiping motion like that used for cleaning ordinary LP records, because in wiping the disc there is a risk of scratching it. A radial scratch will do the least harm