Onkyo DX-7500 is a fully featured Compact Disc player. It features dual 18-bit D/A converters with eight-times oversampling at 352,8 kHz. The player also makes extensive use of optical signal transmission and isolation techniques.
Onkyo's Opto-Drive system is claimed to completely eliminate any electromagnetic interference from the outputs of D/A converters by using phototransitors instead of diodes to regulate the power-supply voltage to the converts. Optical coupling between the digital and analog circuitry of the DX-7500 eliminates the possibility that digital signals could leak into the analog sections and degrade the output quality. The analog audio outputs are supplemented by two digital outputs - electrical and optical - for use with an external D/A converter.
In addition to its internal sophistication , the DX-7500 offers almost every feature one could hope to find in a CD player. Besides the usual operating functions, including repeat of a track, disc, or any selected portion , it has a Time Editing feature that determines how many tracks can be accommodated on each side of a tape cassette.
The memory system can be programmed to play up to twenty tracks of a CD in any order, and a Memory Edit feature allows the program to be modified at any time. The player haas a shuffle-play mode, in which all the tracks on a disc are played back in a random order. It also provided direct keypad access to any numbered track.
Specifications
Signal Readout System: Optical non-contact
Reading Rotation: About 500 - 200 rpm (constant linear velocity)
Linear Velocity: 1,2 - 1,4 m/s
Error Corection System: Cross Interleave Raedsolomon Code
Decoded Hits: 18 bits linear
Sampling Frequency: 352,8 kHz (eight-times oversampling
Number of Channels: 2 (stereo)
Frequency Response: 5 Hz - 20 kHz
Total Harmonic Distortion: 0,0015% (at 1 kHz)
Dynamic Range: 103 dB
Signal-to-Noise Ratio: 110 dB
Channel Separation: 103 dB ( at 1 kHz)
Wow and Flutter: below threshold of measurability
Output Level: 2 V RMS
Power Consumption: 23 watts
Dimensions (W x H x D): 435 x 131 x 365 mm (17-1/8" x 5-1/8" x 14-7/16")
Weight: 8,8 kg (19,4 lbs)
Nessun commento:
Posta un commento