The P-D1 Compact Disc Player: Proof of Pioneer leadership in laser and audio technology.
The Compact Disc represents a radical departure from conventional analogue forms of music reproduction. The sound quality of a CD player relies on more than just the digital circuity. Analogue circuitry - a series of stages after the D/A converter - handles music in its original analogue audioform.
The very best analogue technology is needed to ensure that distortion does not creep in at this final stage. That's why for the P-D1, we,ve used our finest audio circuitry built around select parts such as our polypropylene capacitors. Pioneer's unmatched reputation for excellence in analogue audio technology is your guarantee of incomparable sound quality.
Pioneer
microelectronics
When the CD
player reads the microscopic pits that store musical information, it must do so
at high speed and with perfect accuracy. To keep the pickup on track.
We’ve used three sophisticated servo
systems - a focus servo, a tracking
servo and a spindle servo.
The focus
servo keeps the laser beam focused on the reflective surface of the CD by
moving the objective lens toward or away the focus of the laser beam to
follow the centre line of a track by
monitoring adjacent tracks. The spindle servo keeps the linear velocity of the
disc constant by continuously adjusting the speed of the spindle motor.
All of this
advanced Pioneer electronics ensures the tracking remains smooth, precise and
free of transfer error.
Best quality
audio circuitry
The sound
quality of a CD player relies on more than just the digital circuitry. Analogue
circuitry - a series of stages after the D/A converter - handles music in its
original analogue audio form. The very
best analogue technology is needed to ensure that distortion does not creep in
at this final stage. That's why for the P-D1, we've used our finest audio
circuitry, built around select parts such as out polypropylene capacitors.
Pioneer's unmatched reputation for excellence in analogue audio technology is
your guarantee of incomparable sound quality.
Super
Specifications
You have to
hear the sound of the Compact Disc System to believe it. Noise and distortion
are, for all practical purposes. Nonexistent. Frequency response and channel
separation are dramatically increased. Dynamic range is a 50% improvement over
conventional analogue systems, very nearly reproducing the dynamics of a live
performance. The specifications are nothing short of electrifying:
Dynamic
range is over 90 dB
Signal-to-Noise
ratio is better than 90 dB
Harmonic
distortion is less than 0,006%
Channel
separation is greater than 90 dB
Frequency
Response is flat within ±0,5 dB from 5 Hz to 20 kHz
Wow and
flutter are unmeasurable by state-of-the-art.
Instrumentation
Convenient
features of the P-D1
In addition
to musical information, a Compact Disc contains a digitally- encoded table of
contents and indexes for instant cueing.
This makes possible the following convenient functions:
Random
Search - lest you start playback from any desired point on a disc. Select by
means of specific track (selection) or by means of elapsed time ( from start of
the track)
Phrase Play
- when a phrase number is entered playback starts automatically from the
beginning of any phrase within a single track.
Skip - lest
you backtrack to the beginning of the current track (selection) or skip ahead
to the next one.
Index Scan -
lets you hear the first 7 seconds of every track (selection) on a disc in
succession
Music
Repeat/One-Side Repeat - permit repeat of any track (selection) and repeat of
the whole side of a disc, respectively.
Programmed
Function - lets you hear any number of tracks (selection) up to 16 in any order
you desire.
Status
Indications - when the Total key is touched, the total number and total
play time of selections you have
programmed are displayed. Touch the "PGM Check" key to find out the
track number of the current selection and the total time of selections yet to
be played.
P-D1 Specifications
Audio Section
Frequency response: 5 - 20,000 Hz ±0,5 dB
Signal-to-noise ratio: more than 90 dB
Dynamic range: more than 90 dB
Channel separation: more than 90dB (1 kHz)
Wow and Flutter: unmeasurable (dependent on accuracy of crystal oscilator)
Distortion: less than 0,006% (1 kHz, 0 dB)
Output voltage: 190 mV ( 1 kHz, -20 dB)
Number of channels: 2 (stereo)
General
System: Compact Disc Digital Audio System
Disc
Diameter: 120 mm
Thickness: 1,2 mm
Playing time: over 60 minutes
Scanning velocity: 1,2 - 1,4 m/sec.
Rotation: Counterclockwise
Signal format
Sampling frequency: 44,1 kHz
Quantisation: 16 bits linear/channel
Transfer bit rate: 4.321 M bits/sec.
Modulation system: EFM
Error correction: CIRC system
Pre-emphasis: 50/15µsec
Pickup laser: Semiconductor laser; wavelenght 0,78µm
Power requirements: 220/240 V 50/60 Hz
Power consumption: 46 watts
Dimensions (W x H x D): 420 x 140 x 330 mm (16-9/16 x 5-1/2 x 13 inches)
Weight: 12,1 kg (26 lbs. 11 oz.)
Functions
Play / Pause / index Scan / Repeat / Skip / Time Display /Pharse Dispay / Time Search / Pharse Search / Programmed Playback / Programme Check / Total Time Display