为什么要这样调整小谷MX55开盘机的放音特性

红灯记

奇异 发表于 2015-2-2 15:22
是不是换了磁头？这金黄色磁头是不是国产的啊，

金色是原装的，换上去的是国产组装产品

emgc

红灯记 发表于 2015-2-1 11:38
) h9 |  k4 |8 ~. a原文出处：

1. Connect the AC Voltmeter to the CH 1 OUTPUT connector.
2 ]' X) }7 p% g9 D3 g* u! j1。连接交流电压表CH 1输出连接器。
4 @2 m. Z3 ?! U* s, h2 T: N2. Thread the machine with the Reproducer Calibration Tape, press the OUTPUT SRL switches for both CH1 and CH2 and set both READY/SAFE switches to the Safe position. Set both INPUT/SEL’REP/REPRO switches to the Bepro position.
2。螺纹与扬声器校准磁带机，按两CH1和CH2的输出该开关和设置准备/安全开关到安全位置。设置输入sel'rep /摄制切换到百诺位置。
8 C! a: g: K) ^0 I. U3. Play the 1 kHz at Reference Level portion of the Reproducer Calibration Tape.
3。在磁带放音机校准参考水平的部分发挥1千赫。
& D! ^; Q+ Y: Q- t5 P8 l3 V4. Adjust the CH1 REPRO LEVEL trimmer (VR15) on the AUDIO AMPLIFIER PCB assembly so that the AC voltmeter indicates +4 dBu.
4。调整CH1摄制水平微调（vr15）在音频放大器电路板组装，交流电压表指示+ 4 dBu。
4 V! c# m9 u. W; b" c$ X5. Repeat Steps 3 and 4 for channel 2 using the CH 2 REPRO LEVEL trim¬mer (VR25).
5。重复步骤3和4通道2用CH 2摄制水平配平¬MER（vr25）。
9 F; C: q. {. Z( c5 h; ^3 f4.3.3.4 Reproduce Equatizatioti Adjustment
equatizatioti 4.3.3.4再现调整
NOTE: This procedure adjusts the High Frequency Reproduce Equalization.
注意：本程序调整高频再现均衡。
- e9 @5 K0 f; j, w4 V% j9 _  |The Low Frequency Reproduce Equalization is adjusted during the Record
7 r1 ^* N; _/ z- i& {低频再现均衡是在记录调整
8 ]: m5 r& S2 I1 t0 g8 |- DAlignments. Due to the fringing effect which occurs at low frequencies,
对齐。由于边缘效应在低的频率发生，
adjusting the Low Frequency Reproduce Equalization using the Reproduce
调整低频再现均衡使用复制
, O' z% \. M/ k" Y+ C7 I& s1 jAlignment Tape does not produce accurate results.
. t6 A7 S$ E6 x6 x0 S2 Q/ O7 `调整带不产生精确的结果。
1. Thread the machine with the 15 ips Reproducer Calibration tape.
1。螺纹15 IPS设备校准磁带机。
5 S& R% t0 s/ L3 g2. Set the SPEED LO/HI switch to the Hi position.
" ~3 u0 f  I2 `+ [1 r# o- |2。设置速度的高低切换到高的位置。
6 u* }1 [3 Q$ S. G& K2 _3. Set both READY/SAFE switches to the Safe position. Set both INPUT/SEL.REP/REPRO switches to the Repro position, and press both OUTPUT SRL buttons (SRL On).
3。设置好/安全开关到安全位置。设置输入sel.rep/repro切换到复制的位置，并按输出SRL按钮（SRL对）。
5 M9 k+ ^, J7 W: u6 |( T4. Play the 10 kHz portion of the Reproducer Calibraion tape and adjust the CH 1 REP EQ HF H (VR17) trimmer until the AC voltmeter indicates +4 dBu.
( o  u, R) H: |! g" K& g4。玩的放音机标定带10千赫的部分和调整CH 1代表情商HF H（vr17）微调直到交流电压表指示+ 4 dBu。
5. Adjust the CH 2 REP EQ HF H trimmer (VR27) until the AC Voltmeter indicates +4 dBu.
, t# P4 P0 S% w5。调整CH 2代表情商HF H微调（vr27）直到交流电压表指示+ 4 dBu。
# x- s+ t: \3 P+ S' a. B8 D) }6. Thread the machine with the 7.5 ips Reproducer Calibration tape.
6。螺纹7.5 IPS设备校准磁带机。
" ~8 r0 J6 {. F+ @1 S0 l7. Set the SPEED LO/HI switch to the Lo position.
7。设置速度的高低位置切换到LO。
8. Play the 10 kHz portion of the Reproducer Calibration tape and adjust the CH 1 REP EQ HF L (VR19) trimmer until the AC voltmeter indicates -6 dBu.
8。玩的放音校准带10千赫的部分和调整CH 1代表情商HF L（vr19）微调直到交流电压表指示6 dBu。
NOTE: 7.5 ips calibration tape equalization tones are recorded at 10 dB below
注：7.5 IPS校准带均衡音在10分贝以下记录
2 }; X: c' O! u1 h: g3 Mreference level.
参考水平。
7 J* }7 b& m2 c9. Adjust the CH 2 REP EQ HF L trimmer (VR29) until the AC voltmeter indicates -6 dBu.
9 c% M/ G5 D5 n, h0 \9。调整CH 2代表情商HF L微调（vr29）直到交流电压表指示6 dBu。

dianfan

emgc 发表于 2015-2-3 11:15
1. Connect the AC Voltmeter to the CH 1 OUTPUT connector.
- m( x; R2 J9 h' t. S1。连接交流电压表CH 1输出连接器。
; _; a; Z7 w' k5 D, M3 ?; B2. T ...

& g* |) p; k$ `# H% @" _# F刚到手一台 MX-55D ，真想调整一下， 看起来很专业，也很复杂。