Included in this sale:
(1x) Pioneer PD-T05 - CD player(Including alternative remote control)
Does NOT include any other accessories not pictured or described above.
Physical Condition:
Disk player is in excellent condition.
All buttons are in tact.
Shows very minimal signs of ware.
Please refer to the photos.
Body Number:MC1010693AS
Laser head number:PWY1004 (#:1188066-X)
Audio footprint
Pioneer PD-T05
\ 80,000 (released in 1990)
\ 80,000 (released in 1990)
Commentary
CD player which is the first generation adopting the turntable system.
Developed from the disk stabilizer, we adopt the CD turntable system.
By adopting a structure in which the pickup and the spindle motor are installed on the top of the disc, it is possible to support the disc on the entire surface of the turntable from the bottom like the analog player.
This improves the moment of inertia of the turntable by about 3 times, it is strong against the influence of external vibration and sound pressure, the disk with warp, etc., it is possible to suppress unnecessary vibration of the disk.
The 8 fs digital filter and the right and left independent bit stream D / A converter are carried in the D / A conversion part.
In principle, this D / A converter is free from nonlinear distortion and zero-cross distortion caused by errors in resistors such as multi-bit method and deviation of operation timing. Furthermore, by oversampling as high as 192 fs based on the 3rd order noise shaper, the effect of the noise shaper is kept low.
In the 1-bit system, all operations are controlled by the system clock, and system clock jitter affects performance. In order to avoid the influence, the same low system clock (16. 93 MHz) in order to operate.
We are also paying attention to applications, and we have provided vibration isolation and magnetic shield treatment such as providing independent oscillation circuits.
In order to transmit the music signal purely, direct construction is adopted and layout of the main circuit is simplified and straight along the flow of the signal, realizing the shortest signal path.
In addition, it separates the digital / servo and the audio board from the center tray design with the pickup mechanism arranged in the center, and prevents interference in each circuit. Furthermore, analog circuit boards are connected symmetrically from the input to the output terminal with the shortest distance.
This eliminates noise penetration and mutual interference by routing wiring material.
We adopt our own clean laser pickup for pickup and reduce power loss of optical system by reducing optical components such as collimator lens. Furthermore, it reduces the aberration in the optical path, making it possible to pick up signals with less distortion.
Also, we have adopted engineering plastic body for the body, and by dividing the pickup body into about 1000 elements and analyzing the strength, high precision precision shape is realized.
In addition, the I / V conversion head amplifier is built in the photodetector, and it amplifies to the order of about 200 mV, enabling strong transmission against disturbance noise.
The class A operating FET buffer amplifier is adopted as an audio circuit, and the influence of the load etc. of the connected amplifier is reduced by decreasing the output impedance.
Furthermore, due to class A operation, fluctuations in power consumption during operation are reduced, and stable waveform transmission is realized. <A I = 16> In high precision 4 division photodetector, when receiving laser light, a phase difference occurs between the leading signal and trailing signal, and the RF signal is disturbed. In order to solve this problem, we adopted the Accu-Focus system, delaying the preceding signal by the delay circuit and making it coincide with the signal in the following line, thereby obtaining an RF signal with less reading error. The spindle motor is equipped with a brushless hole motor with a starting torque of 65 g · cm. Further φ4. Together with a 5 mm thick shaft, it is robust against load fluctuations and shows stable rotation performance. For pickup drive, we adopted a silent linear motor servomechanism that enables quiet and smooth operation, enabling quick access. In order to protect the optical mechanism from external vibration, we adopt Ramisart mechanism base. It is made by superimposing two sheets of steel sheets and molding with special resin, and by further applying copper plating, improvement of vibration damping characteristics and occurrence of magnetostriction are suppressed. In addition, this mechanical base is mounted on a mechanical chassis via a coaxial suspension of special rubber and springs, and similarly the turntable base is also mounted via a coaxial suspension and each has a flow and structure, It blocks external vibrations from the chassis. A newly developed multilayered honeycomb chassis is adopted as a chassis. Based on a honeycomb chassis made of BMC (Bulk Molding Compound) with high internal rigidity and high rigidity, superior steel plates and cushioning materials superior to electromagnetic shielding are superimposed, excellent vibration damping effect reduces unnecessary vibration, from the floor The reflection of the sound of is also kept low. In addition, by installing the fifth insulator in the center part of the chassis for the insulator, the vibration isolation and weight balance is taken, and the center mechanism is supported. Twin power transformer which is independent for digital / servo circuit and analog circuit is carried in power supply part. Furthermore, bifilar winding is adopted as a transformer for an audio circuit, and by raising the balance impedance of output impedance and inductance, the power supply of the + side and - side is supplied under the same condition, and the sense of transparency and the drive feeling in the low region Has been improved. <A I = 27> In addition, the power supply circuit adopts 4 part 11 regulator, and 4 parts of servo / digital, servo drive, audio +, - are independently rectified, and mutual interference is eliminated. The clean microcomputer which operates only when pressing the operation key is carried and the scanning noise is canceled. The digital / analog output changeover switch is carried. Considering the generation of scanning noise when the display is lit, the display off switch is carried.
.JPG)
.JPG)
CD player which is the first generation adopting the turntable system.
Developed from the disk stabilizer, we adopt the CD turntable system.
By adopting a structure in which the pickup and the spindle motor are installed on the top of the disc, it is possible to support the disc on the entire surface of the turntable from the bottom like the analog player.
This improves the moment of inertia of the turntable by about 3 times, it is strong against the influence of external vibration and sound pressure, the disk with warp, etc., it is possible to suppress unnecessary vibration of the disk.
The 8 fs digital filter and the right and left independent bit stream D / A converter are carried in the D / A conversion part.
In principle, this D / A converter is free from nonlinear distortion and zero-cross distortion caused by errors in resistors such as multi-bit method and deviation of operation timing. Furthermore, by oversampling as high as 192 fs based on the 3rd order noise shaper, the effect of the noise shaper is kept low.
In the 1-bit system, all operations are controlled by the system clock, and system clock jitter affects performance. In order to avoid the influence, the same low system clock (16. 93 MHz) in order to operate.
We are also paying attention to applications, and we have provided vibration isolation and magnetic shield treatment such as providing independent oscillation circuits.
In order to transmit the music signal purely, direct construction is adopted and layout of the main circuit is simplified and straight along the flow of the signal, realizing the shortest signal path.
In addition, it separates the digital / servo and the audio board from the center tray design with the pickup mechanism arranged in the center, and prevents interference in each circuit. Furthermore, analog circuit boards are connected symmetrically from the input to the output terminal with the shortest distance.
This eliminates noise penetration and mutual interference by routing wiring material.
We adopt our own clean laser pickup for pickup and reduce power loss of optical system by reducing optical components such as collimator lens. Furthermore, it reduces the aberration in the optical path, making it possible to pick up signals with less distortion.
Also, we have adopted engineering plastic body for the body, and by dividing the pickup body into about 1000 elements and analyzing the strength, high precision precision shape is realized.
In addition, the I / V conversion head amplifier is built in the photodetector, and it amplifies to the order of about 200 mV, enabling strong transmission against disturbance noise.
The class A operating FET buffer amplifier is adopted as an audio circuit, and the influence of the load etc. of the connected amplifier is reduced by decreasing the output impedance.
Furthermore, due to class A operation, fluctuations in power consumption during operation are reduced, and stable waveform transmission is realized. <A I = 16> In high precision 4 division photodetector, when receiving laser light, a phase difference occurs between the leading signal and trailing signal, and the RF signal is disturbed. In order to solve this problem, we adopted the Accu-Focus system, delaying the preceding signal by the delay circuit and making it coincide with the signal in the following line, thereby obtaining an RF signal with less reading error. The spindle motor is equipped with a brushless hole motor with a starting torque of 65 g · cm. Further φ4. Together with a 5 mm thick shaft, it is robust against load fluctuations and shows stable rotation performance. For pickup drive, we adopted a silent linear motor servomechanism that enables quiet and smooth operation, enabling quick access. In order to protect the optical mechanism from external vibration, we adopt Ramisart mechanism base. It is made by superimposing two sheets of steel sheets and molding with special resin, and by further applying copper plating, improvement of vibration damping characteristics and occurrence of magnetostriction are suppressed. In addition, this mechanical base is mounted on a mechanical chassis via a coaxial suspension of special rubber and springs, and similarly the turntable base is also mounted via a coaxial suspension and each has a flow and structure, It blocks external vibrations from the chassis. A newly developed multilayered honeycomb chassis is adopted as a chassis. Based on a honeycomb chassis made of BMC (Bulk Molding Compound) with high internal rigidity and high rigidity, superior steel plates and cushioning materials superior to electromagnetic shielding are superimposed, excellent vibration damping effect reduces unnecessary vibration, from the floor The reflection of the sound of is also kept low. In addition, by installing the fifth insulator in the center part of the chassis for the insulator, the vibration isolation and weight balance is taken, and the center mechanism is supported. Twin power transformer which is independent for digital / servo circuit and analog circuit is carried in power supply part. Furthermore, bifilar winding is adopted as a transformer for an audio circuit, and by raising the balance impedance of output impedance and inductance, the power supply of the + side and - side is supplied under the same condition, and the sense of transparency and the drive feeling in the low region Has been improved. <A I = 27> In addition, the power supply circuit adopts 4 part 11 regulator, and 4 parts of servo / digital, servo drive, audio +, - are independently rectified, and mutual interference is eliminated. The clean microcomputer which operates only when pressing the operation key is carried and the scanning noise is canceled. The digital / analog output changeover switch is carried. Considering the generation of scanning noise when the display is lit, the display off switch is carried.
Rating of model
Model CD player pick up 3 beam semiconductor laser system Frequency characteristic 2 Hz to 20 kHz SN ratio (EIAJ) 115 dB or more Dynamic range (EIAJ) 99 dB or more Channel separation (EIAJ) 110 dB or more Wow · Flutter (EIAJ) Measurement limit (± 0.001% W.PEAK) or less Harmonic distortion factor (EIAJ) 0.0017% or less Output voltage 2.0 Vrms Number of channels 2 channels (stereo) Digital output Coaxial output: 0.5 Vp-p / 75 Ω
optical output: -15 dBm to -20 dBm (wavelength 660 nm) Power supply AC 100 V, 50 Hz / 60 Hz Power consumption 20 W External dimensions Width 420 × height 130 × depth 330 mm weight 10.0 kg Included Remote controller
| Model | CD player |
| pick up | 3 beam semiconductor laser system |
| Frequency characteristic | 2 Hz to 20 kHz |
| SN ratio (EIAJ) | 115 dB or more |
| Dynamic range (EIAJ) | 99 dB or more |
| Channel separation (EIAJ) | 110 dB or more |
| Wow · Flutter (EIAJ) | Measurement limit (± 0.001% W.PEAK) or less |
| Harmonic distortion factor (EIAJ) | 0.0017% or less |
| Output voltage | 2.0 Vrms |
| Number of channels | 2 channels (stereo) |
| Digital output | Coaxial output: 0.5 Vp-p / 75 Ω optical output: -15 dBm to -20 dBm (wavelength 660 nm) |
| Power supply | AC 100 V, 50 Hz / 60 Hz |
| Power consumption | 20 W |
| External dimensions | Width 420 × height 130 × depth 330 mm |
| weight | 10.0 kg |
| Included | Remote controller |