s e r i e s n r. 5 ( y e a r september 2006 )
update new dac 24 bit PCM-1704
W hen the perfect mechanical solution join original electronic design born a superior cd player class A product.
The circuity of power supply employ 14
regulation stages , only
one capacitor on signal path as film & foil custom made, special material chassis by aerospace alluminium die-cast. The output tube triode circuity is in class A
with only one passive first order filter so do not have indesiderate rotative
signal phase.
The CD mechanism have two different solution of mechanical damping:
A original magnetic clamp system give more stability to the rotation the CD disc so to have the double stabilization on two axis: orizzontal and vertical.
C O N V E N I E N C E A N D P E R F O R M A N C E
S P E C I F I C A T I O N
| Type | Top Loading CD player tube analog |
| Digital section | 24
bit PCM-1704 dual mono oversampling by
DSP
and NO data L/R shift phase |
| S/N ratio | 105 db |
| Distorsion | 0.1% THD or better |
| Frequency response | 20-20khz (with gently slope filter) |
| Output impedance | 150 ohm 3.0 volts rms (2.5
Volt min)
The output voltage is measured at 0 db test cd disk The music cd disk have output rathed at 200-500 mV so the CDP-7 can interface ANY preamplifier or amplifier without NO input saturation |
| Power supply | 220-240-120-100 vac (separate box model PSU 3) |
| Dimension CDP 7T | 400x115x300 (lxhxp) |
| Dimension PSU 3T | 225x85x300 (lxhxp) |
| Weight net | CDP7T=
12 kg PSU3T= 3 kg |
READ THIS IMPORTANT DESIGN ORIGINAL SOLUTION
| Chassis | Machined alluminium die cast chassis |
| CD-TRANSPORT Laser assembly | Lector design proprietary mechanism made from alluminium one shot construction, brass pillar and solid plexiglass as mechanical isolated filter from chassis ground |
| Magnetic Clamp | Made by special delrin with isolated viton rubber control resonance and neodinium magentic puck |
| Jitter control | By own design servo board ( no economical pre-assembly kit's) by selecting XTAL oscillator work as "suspended mode" data digital signal leaves as full integrity and channel switch is on latch digital signal, own proprietary software control firmware |
| Power supply | Separate box include 3 power transformer so reduce magnet flux, passive AC mains filter included , CDP-7 main unit uses 14 local voltage regulators |
| Digital filter section | By D.S.P. (digital signal processor) as low taps, phase correct, 18 bit interface real data transfer resolution to DAC interface |
| Analog filter section | Minimize phase distorsion and phase rotation design only simple first order passive filter, D.S.P. make the 99% reduce jitter noise |
| DAC power supply | By two double voltage regulator and separate plug-in board as isolated ground loop for reducing ground jitter |
| I- TO- V circuit |
Based on zero feedback control by mixing of tubes and passive components |
| Reclock data DAC circuit | Based on D.S.P. (digital signal processor) controlled by Xtal drive by PLL as low noise circuit |
DOCET-LECTOR reserve the right to change or modify this specification without notice.
Design and handmade in Italy EU by Docet-Lector.
This units meet C.E. rules as EN55013 and EN5502
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CDP-7 Black plexiglass lateral panels version |
CDP-7 / PSU-3T Black plexiglass panels for power supply |
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Spindle motor transmit vibration to laser pick up |
Lector CDM adopt special spindle solution for control and reduce the vibration comes from the motor |
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V. S. D. C. S.
VIBRATION SYSTEM DISC CONTROL SPINDLE : proprietary only on Lector CD player!
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R e f e r e n c e d o c u m e n t s: |
download & links |
Download a full doc's of CDP-7 catalogue "CDP-7 in detail"
click here (for acrobat pdf version) click here (for zip version)
Back to the Lector-home page(english) Ritorna alla pagina iniziale in Italiano
DOCET-LECTOR - Via Verdi,35 - 27010
Albuzzano (PV) - Italy
Voice: +39 0382-48.41.65 Fax:+39 0382-48.10.21 -----
