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
9 [' L+ Y% ]0 C0 d2 y0 D' y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
# \6 M2 t- ^( i) {# Q原文出处：

8 v' S. [) l# T* B1. Connect the AC Voltmeter to the CH 1 OUTPUT connector.
  ?; V+ o# s3 n& ~2 M1。连接交流电压表CH 1输出连接器。
& Y) i3 Y6 ~/ a2. 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.
8 [# S9 r- l0 R: w, B% w" |- k2 W2。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。
3. 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。
4. 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。
5. Repeat Steps 3 and 4 for channel 2 using the CH 2 REPRO LEVEL trim¬mer (VR25).
% h1 O. n! H' H4 G7 P, M! S5。重复步骤3和4通道2用CH 2摄制水平配平¬MER（vr25）。
! a9 f: j' H) R+ n4.3.3.4 Reproduce Equatizatioti Adjustment
. n4 _/ \6 F% X3 D( S9 sequatizatioti 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。
The Low Frequency Reproduce Equalization is adjusted during the Record
/ P5 W% i; O8 M" g/ \/ @低频再现均衡是在记录调整
' L9 T" K( S+ \Alignments. 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
Alignment Tape does not produce accurate results.
. ~: X8 t4 ?$ n0 a% y; t3 ^! q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。
3 n; A6 v% s" d# f! k: z2. Set the SPEED LO/HI switch to the Hi position.
1 z7 ^; A. Z! U+ H2。设置速度的高低切换到高的位置。
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）。
$ o8 ^; @  H9 U9 Y4. 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.
) `* V* R% v- I: T5 K3 _4。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。
6 S9 g! U% F' n5. Adjust the CH 2 REP EQ HF H trimmer (VR27) until the AC Voltmeter indicates +4 dBu.
5。调整CH 2代表情商HF H微调（vr27）直到交流电压表指示+ 4 dBu。
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。
7. Set the SPEED LO/HI switch to the Lo position.
7。设置速度的高低位置切换到LO。
# R/ j! f$ r4 \' z% [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。
& w& O1 }: O/ a6 O. z9 p( lNOTE: 7.5 ips calibration tape equalization tones are recorded at 10 dB below
7 T. K0 S+ `0 u" n+ j注：7.5 IPS校准带均衡音在10分贝以下记录
reference level.
' y' A" I: `& V参考水平。
: ]  g. _" _+ a6 L* T9. Adjust the CH 2 REP EQ HF L trimmer (VR29) until the AC voltmeter indicates -6 dBu.
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。
& Q) M8 @# _4 A1 @/ m; c

dianfan

emgc 发表于 2015-2-3 11:15
. l% D, x5 {. W* K" f1. Connect the AC Voltmeter to the CH 1 OUTPUT connector.
1。连接交流电压表CH 1输出连接器。
2. T ...

) V, K2 c# H3 u. m- t: z9 C, k* `刚到手一台 MX-55D ，真想调整一下， 看起来很专业，也很复杂。