Denon DP-S1

 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