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Inspections (検査 - Yamaha MSP7 STUDIO Service Manual

Msp series powered monitor speaker
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MSP7 STUDIO
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3 7 63 1515 0
I
INSPECTIONS (検査)
Measuring Voltage
Load
LEVEL VR
Tone-control SW
1. Electric performance (電気性能)
ITEM
No.
(項目)
Output Power
1
(定格出力)
GAIN
2
(利得)
Frequency Response
3
(周波数特性)
TE
L 13942296513
Tone-control
4
Characteristic
(トーンコントロール特性)
Noise Level
5
Residual Noise
(残留雑音)
www
MAX. Noise
6
.
DC Voltage
7
(NOTE): 0 dBu = 0.775 V
16
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[測定電圧]
[負荷]
[レベル VR]
[トーンコントロール SW]
INPUT CONDITIONS
(入力条件)
INPUT 400 Hz
INPUT 5 KHz
INPUT -6 dBu 1 KHz
INPUT
HIGH TRIM: 0
LOW TRIM: 0
LOW = -3
REF: 60 Hz
LOW = -1.5
REF: 60 Hz
LOW = +1.5
REF: 60 Hz
HIGH = -1.5
REF: 15 KHz
HIGH = +1.5
REF: 15 KHz
LOW CUT= 80 Hz
REF: 80 Hz
LOW CUT = 100 Hz
REF: 100 Hz
LEVEL VR = MIN.
HIGH TRIM: 0
LOW TRIM: 0
LEVEL VR = MAX.
x
ao
y
HIGH TRIM: 0
LOW TRIM: 0
i
No Signal
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8
AC100 V, 50/60 Hz (J)
AC120 V, 60 Hz (U, C, T)
AC240 V, 50 Hz (A)
AC230 V, 50 Hz (B)
AC230 V, 50 Hz (H)
AC230 V, 60 Hz (K)
AC230 V, 50 Hz (O)
LF 4 Ω
HF 6 Ω
MAX.
HIGH TRIM, LOW TRIM: 0 position, LOW CUT: FLAT
OUTPUT CONDITIONS
(出力条件)
LF: 80 W (27.3 dBu) OUTPUT
HF: 50 W (27.0 dBu) OUTPUT
DIN AUDIO Filter
LF SP-OUT
REF: LF OUTPUT
20 Hz
1 KHz 1 W
REF: LF OUTPUT
60 Hz
1 KHz 1 W
Q Q
3
6 7
1 3
REF: LF OUTPUT
400 Hz
1 KHz 1 W
REF: LF OUTPUT
2 KHz
1 KHz 1 W
REF: LF OUTPUT
4 KHz
1 KHz 1 W
REF: LF OUTPUT
20 KHz
1 KHz 1 W
REF: LF OUTPUT
LOW TRIM: 0
REF: HF OUTPUT
HIGH TRIM: 0
REF: LF OUTPUT
LOW CUT: FLAT
LF SP-OUT
DIN AUDIO Filter
HF SP-OUT
DIN AUDIO Filter
LF SP-OUT
u163
DIN AUDIO Filter
HF SP-OUT
.
DIN AUDIO Filter
HF SP-OUT
LF SP-OUT
2 9
9 4
2 8
LIMIT
(限界値)
< 0.05 %
< 0.05 %
27.3 dBu ± 2 dB
-21.0 ± 3 dB
LF SP-OUT
+6 ± 2 dB
LF SP-OUT
1 5
0 5
8
2 9
9 4
+2.5 ± 2 dB
LF SP-OUT
+3 ± 2 dB
LF SP-OUT
-12.5 ± 3 dB
HF SP-OUT
-23 ± 3 dB
LF SP-OUT
-2 ± 2 dB
HF SP-OUT
+4.5 ± 2 dB
HF SP-OUT
-3 ± 1.5 dB
-1.5 ± 1 dB
+1.5 ± 1 dB
-1.5 ± 1 dB
+1.5 ± 1 dB
-3 ± 2 dB
-3 ± 2 dB
< -60 dBu
< -60 dBu
m
< -60 dBu
co
< -60 dBu
< ±50 mV
9 9
2 8
9 9

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