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发表于 2009-2-4 22:30:01
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http://stereophile.com/cdplayers/343/
stereophile当年的试听报告提到该机有一个显著特点：使用外部数码线连接数码输出到eclipse自己的数码输入，将bypass hdcd解码，这时听到的才是它真正的声音。我记得kevinlove也是这样用的。
According to Simaudio, jumpering the digital output and input bypasses the HDCD digital filter, the data being passed instead to the Burr-Brown filter chip. They feel, and I definitely agree, that although the market demands HDCD capability, the filter degrades the Eclipse's playback of non-encoded discs, slightly decreasing resolution and focus. So why not a switch? I ended up doing all of my listening using Nirvana's killer T-2 digital cable to bypass the HDCD chip.
Playing CDs via the HDCD filter, the unit's unbalanced maximum output level (MOL) was 1.93V, this doubling from the balanced outputs, as expected. With the Moon fed from an external digital source, I expected a 6dB rise in level; the external input bypasses the PMD100 filter, which drops the level of non-HDCD-encoded discs by the same 6dB. However, the maximum output level actually rose by 7dB for external sources, to a high 8.644V from the balanced output jacks. (This could prove problematic for some older preamps with switched-transistor volume controls.)
All of the above characteristics reflect the Eclipse's performance with its HDCD chip bypassed. With the HDCD filter/decoder in-circuit, the player was an entirely different animal. There were noticeable reductions in detail, clarity, and transparency. Transients sounded compressed and their leading edges dulled, giving the entire performance a liquid, laid-back character. The perspective changed as well, becoming more distant, and the soundstage itself was recessed, dropping back a few feet behind the plane of the speakers. If you want to hear what this player can do, take my—and Simaudio's—advice: bypass the HDCD chip. |
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