Creek CD-50 Mk2 Brochure
CD50 mk2
Creek’s CD50 mk2 really gets the heart racing – it works faultlessly with a wide range of music,
no matter how complex. The musical detail it exhibits is impressive.
The player now uses a ROM drive. Extracting the digital information from the ATAPI bus,
similar to a computer, has enabled Creek to work with a virtually jitter free signal source. To
convert the signal to a usable format, this player uses a digital buffer circuit (FPGA) that stores
the signal for a short time and converts it into a suitable format for feeding to the Crystal Semiconductors CS4396 24 bit 192 kHz D to A converter. This creates shock immunity from the
player, so that the disc is not playing exactly in real time, but slightly delayed through the
dynamic buffer. It also converts the signal into a SPDIF signal to provide a high quality digital
output, which is available via TOSLINK optical as well as co-axial sockets.
To enable the CD50 mk2 to be future-proofed, connection of the player to an RS232 bus
system will allow remote control and serial connection of the CD50mk2 with next generation
Creek equipment or proprietary room controllers. This feature will be available by plugging in
the appropriate module into the motherboard and upgrading the software. Soft upgrades are
made easy. The buffer and microcontroller are both programmed by separate EPROMs that
contain all the code.
Two separate high current mains transformers are used in the CD50 mk2. The voltage to the
digital and analogue circuitry, display and ROM drive are kept completely separate, for
maximum interference immunity.
The CD50 mk2 has been designed to read all currently known ‘Copy Protected Discs’.
SPECIFICATION
Power requirements Supplied 220/240—50 Hz or 100/120—60Hz
Power consumption 20 W max 6 W standby
Frequency response 1 Hz - 20 kHz ± 0.25 dB
Output level 2.0 V RMS at 1kHz, 0 dB
Output impedance 50Ω , min load 1 KΩ
Laser type Semiconductor ALGaAs
Wavelength 790 nm ± 25 nm
Light output (cw) 0.18 mW typical
THD + Noise > -97dB
Dynamic range > 117dB
Number of channels 2
Total harmonic distortion < 0.0008% at 1 kHz, 0 dB
Weight 5 Kg
Dimensions CD50 430 x 62 x 250 mm
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