play from that point on until the end of the disk. While playing, the display will show each track currently playing along with the elapsed time from the beginning of that track. Once the disk is over, the CDP-10 will return to STOP mode.
Playback of only selected tracks
You can program the CDP-10 to play any combination of tracks on a disk, up to a maximum of 20. Using the NEXT (>) and PREVIOUS (<) buttons, or the numeric keypad, find the first desired track on the display. Then press the PROG button. Repeat this procedure until all desired tracks have been stored. As each track is being stored, the display indicates the total playing time of all tracks currently programmed. Please note that the front panel display of the CDP-10 will not show the ‘total time’ if more than 13 tracks are programmed. Press PLAY. Playback will commence from the first programmed track, and all programmed tracks will play in the order they were stored. Please note that:
•If you try to program more than 20 tracks, no more tracks will be entered into memory.
•During programmed playback, the numeric keypad is disabled; use NEXT and PREVIOUS to change tracks.
•The programmed tracks don't have to be in ascending numerical order; i.e. you can program track 2 to play after track 6.
•To clear all the tracks programmed in memory, press the STOP button twice if the CDP-10 is already playing, or once if it is not. If you intend on changing the disk, simply opening the disk tray automatically erases all programmed tracks from memory.
Playback using REPEAT
Pressing the REPEAT button will have the unit repeating the entire disk. Once the REPEAT mode is chosen, press PLAY.
The REPEAT feature can also be used with tracks programmed in memory in the same way as above.
TECHNICAL DESCRIPTION
The Classé CDP-10 compact disk player is a high quality unit utilizing the latest innovations in digital audio reproduction. The philosophy behind the CDP-10 is advanced technology for extracting the maximum musical performance, but also embraces the time proven idea of simplicity, in accordance with the saying "simpler is better."
No effort has been spared in the development of the CDP-10. The chassis is of exceptionally thick gauge metal, and has been designed to resist vibration through solid construction and proper isolation from sources of vibration. The 3/8 inch thick faceplate is a tribute to its construction and aesthetics.
Power Supply
Inside, main power is provided by a custom, encapsulated high-current toroidal transformer. The power supply of the CDP-10 is generously oversized to assure that regardless of how much current is drawn, the circuitry will remain unaffected by any fluctuations. Multiple stages of regulation, 11 in total, are used in the power supply, to assure the elimination of interference caused by fluctuations often induced by heavy current draw on shared supplies. The CDP-10 inherently has a low power consumption, but micro-information is easily contaminated when traditional power supplies clip due to their inadequate output. This is the general idea behind the high current, stable and fully regulated supply that powers the CDP-10. All the critical power supply and reference voltages are bypassed by OSCON capacitors, specially chosen for their very low electrical series resistance.
Disk Transport
The disk transport itself is the professional type VAE1250 transport from Philips. This mechanism is of the latest and newest generation design and reliably reads all CDs and is also compatible with CDR and CDRW. The VAE1250 is of very high quality, and its outstanding construction using highly efficient, long life motors assures excellent long-term reliability.
In addition, this compact disk player is designed not to require periodic calibration, assuring that long-term alignment will always be right on specification.
Control Logic Servo Board
The control logic board of the CDP-10 enables the various digital functions of the transport and carries all the logical functions that are needed to operate and initialise the CDP-10. To isolate this board from the delicate audio processing circuits, the control board has been located separately from these circuits.
Output Board
Jitter, also known as errors in the time domain, is the prime factor in performance degradation, and Classé has addressed this problem from every perspective. The output board carries the master clock, over sampling, digital filter D/A converters and analogue output stage. The original Philips transport has a crystal oscillator directly on the servo board. Since the servo board is actually a very noisy environment, and also because the clock used for the transport is also employed for the critical D/A conversion, we have decided to remove the oscillator and reposition it to a cleaner and quieter environment close to the D/A converter chips. The converter chips then receives the clock signal from the output board. This master oscillator has it’s own local regulator which results in extremely low jitter (<2ps).
Digital Output
The CDP-10 has a single S/PDIF single-ended digital output on a very high quality RCA connector. An added advantage is that the Isolated Master Clock is also responsible for re clocking the S/PDIF output. This permits a very low jitter digital output when the CDP-10 is used as a digital source transport.
HDCD Decoding and Oversampling
The CDP-10 features an HDCD decoder that, in addition to allowing full HDCD decoding, functions as a state of the art oversampling filter if the input data is not encoded in HDCD format. A PMD200 HDCD oversampling filter and HDCD decoder is utilised for that matter. We feel that this is amongst the best oversampling filters available. It runs in 8X oversampling mode.
D/A Conversion (Pure Differential Cross Balance)
The CDP-10 utilises the latest generation D/A converters from TI/Burr-Brown, the PCM1738, which are stereo current-output D/A type (24/192). Each output features a fully differential push-pull output topology. For the CDP-10, we have decided to use one stereo chip per channel. The fully differential output is then used for only 1/2 of the signal. This enables much better stereo separation and fully balanced audio signals. We do not use quasi-symmetrical outputs sourced from a single-ended signal converted to balanced at the output by an inverter stage since this would be a less than optimal ploy found in many lesser designs. The CDP-10 utilises eight current to voltage converters, four per channel. The signals are converted to a balanced output in the subsequent stages. Using Pure Differential Cross Balance™ has an added advantage over standard differential designs since a dual balanced amp takes the difference of both signals halves for the ‘hot’ and ‘cold’ output of the signal. This means that each of the ‘hot’ and ‘cold’ signals that enter the XLR connector are derived from four D/A conversion stages.
Remote Handset
Another technical highlight of the CDP-10 is the custom, solid aluminium remote handset. It features an exceptionally wide transmission angle to the IR receiver on the CDP-10, and is engineered to last an extremely long time.
FCC requirements
Great care has been used throughout the design and layout of the CDP-10 to meet FCC class B requirements. This will ensure that the CDP-10 will be insensitive to noisy components in a system, and in turn will not cause harmful interference to other components.
