The DP-S1 is
a top quality CD transport developed based on a ploicy of fully eliminating
vibration and resonance within an innovative design. Vibration and resonance
are eliminated through a newly developed pickup mechanism, a large stabilizer,
triple-layer floation, and a frame design which keeps the influence of external
acoustic pressure to the absolute minimum. The DP-S1 provides five types of
digital outputs and an ultra high-speed synchronous optical link (ST-GEN LOCK)
for ultimate synchronized driving.
Newly
developed pickup mechanism unit
Strong cast
aluminum pickup base throughly eliminates extraneous vibration.
A high
torque motor provides accurate, extremely smooth rotation, minimizing jutter,
in addition , the self-centering stainless steel turntable is driven with an
ultra-thick spindle shaft (6mm in diameter), and a very hard, low friction ruby
(5mm in diameter) is used for the bearing, providing outstandingly high
endurance.
The opening
of the disc loading section is air-shielded with a special rubber material to
suppress the effect of air vibration entering through gaps, greatly improving
the airtightness of the pickup mechanism.
Extremely
stable disc playback thanks to a large stabilizer
The
stabilizer holds the disc down to correct any warping in the disc and prevent
jitter during signal readout.
The
stabilizer also thoroughlysuppresses any resonance inthe disc itself.
The moment
of inertia generated by the stabilizer, which is heavier than disc, creates
extremely stable rotation and improves the readout jitter margin.
Through
anti-resonant construction
The latge
insulator absorbs vibrations from the floor through a combination of aluminum
and sintered alloy.
The
mechanissm base which supports the pickup mechanism is floated from the frame
with elastic rubber.
The pickup
mechanism is itself floated with an oil damper and spring. This Triple Floating
Mechanism structure shuts out external vibration to provide playback with
excellent vibration resistance.
The highly
rigid pickup mechanism is palced at the
center where it is less likaly to be affected by external vibration. This also
makes for excellent weight distribution.
The
heavyweight chassis and lowcenter of gravity create an ideal non-resonant
design.
The design
makes use of spherical surfaces and radial forms to keep the influence of
external acoustic pressure to a minimum
Synchronized
driving with an ultra high speed synchronized optical link (ST-GEN LOCK)
The speed at
which date transfer is a very rapid 50Mb/sec, nearly 10 times that of
conventional optical links (6Mbit/sec). This virtually eliminates transmission
distortion due to signal delay.
The D/A
converter master clock is synchronized with the CD Transport clock improving
clock precision and suppressing jitter.
The AT&T
ST-Link system is used for the interface, allowing direct one way connection to
high quality foreign made D/A converters.
Specifications
Disc
Format: Compact disc
Signal
Format
Sampling
Frequency: 44,1 kHz
Quantization
Bits; 16 bits linear/channel
Transmission
Baud Rate: 4,3218 Mb/sec
Digital
Output Signal Format
Format
: Digital audio interface
Optical-ST
Peak Optical
Power: -16 dBm or greater
Acceptable
Laser Wavelength: 875 nm
Optical-TOS
Peak Optical
Power: -12 dBm
Acceptable
Laser Wavelength: 660 nm
Output
Voltage:
Coaxial
- RCA : 0,5 Vp-p/75 Ω
Coaxial
- BNC : 0,5 Vp-p/75 Ω
Balance
: 5,0 Vp-p/110 Ω
Digital
Input Signal Format
Gen Lock
Clock Input -ST
Acceptable
laser Power: -30 dBM or greater
Acceptable
Laser Wavelength: 875 nm
Signal
Format : 16,9344 MHz (384 fs,) Duty 50%
clock
Pickup
Type: Reflex lens drive optical pickup
Reflex lens
Drive Method: Two-dimensional parallel
driving
Light
Source: Semiconductor laser
Wavelength :
780 nm
General
Power
Supply: 110 V - 240V, 50/60 Hz
Power
Consumption: 17 W
Dimensions
(W x H x D): 434 x 143 x 400 mm
(17-3/32" x 5-40/64" x 15-3/4")
Weight: 16,7 kg (3l lbs 14 oz)
Year: 1993