Because the CD vibrates (chatters) slightly due to the high rotational spin speed of the CD mechanism this "chatter" problem had to be addressed. Oracle have created an interface system that effectively controls this unwanted vibration through an innovative combination of materials and their interaction.

CD Coupling System

Chatter is a persistent feature of the compact disc, and it causes a major problem. The chatter or wobble of the disc causes the laser to lack focal clarity, this results in distortion or misread information. This in turn causes the error correction circuitry to have to operate, sometimes to excess.

Oracle pioneered the now well established "record clamp" system to solve problems with analogue records. A similar system has been developed by Oracle to combat CD chatter. Our Disc clamp acts to eliminate the chatter by magnetism, this, coupled with a slight vacuum created by a thick Urethane washer resolves the problems.

Craftsmanship

In order to achieve an impeccable natural finish on most of the machined parts, diamond cutting tools are used extensively. Each aluminium component is coated with a high gloss polyester lacquer to seal and preserve the beautiful natural appearance.

At Agence Commerciale A.C.I. Inc., people make the difference in manufacturing, they are craftsmen devoted to serving our sophisticated customers. Their work creates pride of ownership, their passion for detail shows at every step of the manufacturing process. Their manufacturing techniques and skills result in a work of art.

We couldn’t imagine any better way to achieve built in quality assurance.

Main Chassis

The main chassis plays an important role within the CD replay system, it must rigidly support both the mechanism and the adjacent electronics. Maximum rigidity, minimal surface area and energy control are key design parameters. The chassis system as a whole, due to its mass, contributes in effectively controlling vibration with the aid of additional mechanical filters. The chassis’s nylon sleeve eliminates the high frequencies, the « Delrin » drive coupling pillars remove mid and high frequency interference from the vicinity of the drive mechanism. Finally, a Urethane compound acts as a mechanical energy trap reducing any remaining vibration to an insignificant level.

Suspension

Because the world around a CD player vibrates, the mechanism must be isolated from it. Oracle’s suspension system has proved to be virtually the very best in the industry.

The Oracle CD Player main chassis assembly is suspended and isolated from room vibrations using four suspension towers. Each suspension tower assembly combines no less than 12 different components on both the CD Drive/Player. The suspension system is a highly sophisticated device combining 7 different mechanical filters, all working as a whole to effectively control unwanted vibrations.

The CD players levelling feet with their convex shape represent the first barrier to limit vibrations from reaching the CD playing platform. The « Delrin » suspension pillars will cut mid and higher frequencies, the upper spring rubber bushing controls spring resonance, the conical shape suspension spring takes care of the crucial lower frequencies from 5Hz and up. The spring adjustment sleeve provides spring calibration while controlling spring resonance, the sorbothane damper represents the mechanical energy trap reducing vibrations to an insignificant level. Finally, the felt dampers control inner spring resonances.

[제품 사양]

Digital to Analogue Converter Board
- Balanced out
- 12dB filtering without looping
- No global feedback diagram
- No continuous control
- No solid current generator
- Maximum bandwidth possible
Single Ended SP/DIF, Digital Audio Signal
- Format BNC
- Load Impedance 75 Ohm
- Output Impedance 75 Ohm
- Output Level 0.5 Volts, peak to peak at 75 Ohm load
RCA (CINCH), Analogue audio Signal
- Format Cardas Rhodium plated RCA connectors
- Load Impedance 5k Ohm minimum, 50k Ohm maximum
- Output Impedance lower than 100 Ohm
- Output Level 2,4 Volts effective
- Conversion Crystal CS4390, 24-Bit
- Type Delta- Sigma
- Signal to noise ratio 115 dB
- Dynamic Range 106 dB
- Oversampling 128X