CD PLAYER JVC XL - Z 431

Πωλειται CD PLAYER JVC XL - Z 431....εδω παραθετω τα χαρακτηριστικα του...Our tests of the XL-Z431 were limited to its CD-playing performance, not its Compu-Link features. Its output from a 0-dB (maximum-level) test track was 2.19 volts. The channel levels differed by only 0.03 dB over most of the audio range. The frequency response from 15 to 20,000 hz was + 0.03, -0.05 dB on one channel and + 0.01, -0.15 dB on the other. Maximum interchannel phase shift was 1.08 degrees at 20,000 Hz. De-emphasis response error was less than 0.05 dB on one channel and a maximum of 0.2 dB at 16,000 Hz on the other.
Dynamic range (EIAJ) was 98.8 dB, and quantization noise was -95.2 dB. The wideband noise (A-weighted) was — 108.8 dB, and the speed error was -0.0017 percent. Channel separation was 112 to 115 d B at 100 Hz, decreasing linearly to 71 dB at 20,000 Hz.
The XL-Z431’s outstanding low-level linearity was a testimonial to the effectiveness of its PEM DD converters. From -60- to -100-dB levels, the amplitude errors ranged from a maximum of +0.73 dB at -90 dB to a minimum of -0.05 dB at -100 dB, averaging only 0.3 dB over that full range.
A spectrum analysis of the player’s noise level showed a nearly constant -120-dB level from 20,000 Hz down to 1,000 Hz, varying between —120 and -130 dB from 1,000 to 30 Hz. At a 0-dB level, the player’s total harmonic distortion plus noise (THD + N) was a nearly constant 0.002 percent from 100 to 3,000 Hz, rising to 0.0035 percent at 20 and 10,000 Hz and returning to 0.0016 percent at 20,000 Hz. At 1,000 Hz, the THD + N was 0.0016 percent for all levels between —5 and — 70 dB.The slewing