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發表於 2014-11-7 13:06:12
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Dear 師兄,
通常 MC 唱頭輸出比較細,但其頻寬及訊噪比亦較理想,先天性的優越 CD 很難比較,唯一 DAC 至 OP amp 放大部份的變壓與放大系數較 Phono 高,因此輸出的 Gain UV dB 亦較大,即是 CD 位置大聲些這是理所當然的。
唯有 Vol 開大一點吧
C2500 Phono setting 參考數據如下:
to make the Phono Trim Adjustments:
1. Select either the Phono MM or Phono MC Source
Input.
2. Select “PHONO CARTRIDGE, Moving Coil 400
Ohm” or “PHONO CARTRIDGE, Moving Magnet
50pF” as indicated on the Front Panel Display.
Refer to figures 76 and 77.
3. Set the desired phono cartridge loading value
(Ohms for a Moving Coil Cartridge or Capacitance
for a Moving Magnet Cartridge) that comes
closest to the Phono Cartridge Makers recommended
value.
Sensitivity (for rated output)
Phono MM, 4.5mV
Phono MC, 0.45mV
Maximum Input Signal
Phono MM, 80mV
Phono MC, 8mV
Signal To Noise Ratio (A-Weighted)
High Level, 100dB below rated output
Phono MM, 75dB below 5mV input
Phono MC, 75dB below 0.5mV input
Input Impedance
Phono MM, 47K ohms; 50 to 750pF, in 50pF steps
Phono MC, 25, 50, 100, 200, 400 or 1,000 ohms;100pF
可設定不同抗阻作試聽,通常以高頻開揚度作基準,當然亦要以個人口味為依歸 |
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