Hs80M Inspections - Yamaha HS80M Service Manual

HS80M
I
HS80M INSPECTION
1. Test conditions
(1) Input Signal: PHONE 1 kHz (WF), 10 kHz (TW)
(2) Output load: 4 ohms (WF), 8 ohms (TW)
(3) AC power supply:
(4) VR-Level:
MID EQ SW:
ROOM CONTROL SW: 0
HIGH TRIM SW:
LOW CUT SW:
2. Specifications
ITEM
OUTPUT POWER
1
GAIN
2
T.H.D.
3
FREQUENCY RESPONSE
4
TONE-CONTROL
5 CHARACTERISTIC
RESIDUAL NOISE
6
(NOTE): 0 dBu = 0.775 V
AC100 V, 50/60 Hz (J)
AC120 V, 60 Hz (U, T)
AC230 V, 50 Hz (B, H, O)
AC230 V, 60 Hz (K)
AC240 V, 50 Hz (A)
MAX
0
0
FLAT
INPUT CONDITIONS
INPUT: PHONE -10 dBu, 10 kHz
INPUT: PHONE -10 dBu, 1 kHz
INPUT SIGNAL: 10 kHz
INPUT SIGNAL: 1 kHz
INPUT SIGNAL: 3.5 kHz
INPUT SIGNAL: 2 kHz
INPUT SIGNAL: 36.5 Hz
MID EQ SW: -2
MID EQ SW: +2
ROOM CONTROL SW: -2
ROOM CONTROL SW: -4
HIGH TRIM SW: -2
HIGH TRIM SW: +2
LOW CUT SW: 80 Hz
LOW CUT SW: 100 Hz
LEVEL VR = MIN.
OUTPUT CONDITIONS
1 % THD OUTPUT
15 W OUTPUT
10 W OUTPUT
REF: TW OUTPUT
10 kHz 1 W
REF: WF OUTPUT
1 kHz, 1 W
REF: MID EQ SW: 0
INPUT SIGNAL: 2 kHz
REF: ROOM CONTROL SW: 0
INPUT SIGNAL: 500 Hz
REF: HIGH TRIM SW: 0
INPUT SIGNAL: 10 kHz
REF: LOW CUT SW: FLAT
INPUT SIGNAL: 80 Hz
REF: LOW CUT SW: FLAT
INPUT SIGNAL: 100 Hz
DIN AUDIO Filter
DIN AUDIO Filter
HS80M/HS50M
LIMIT
TW > 30 W
WF > 34 W
26 ± 2 dBu
TW
22 ± 2 dBu
WF
TW < 0.5 %
WF
-3 ± 2 dB
TW
-3 ± 2 dB
WF
4 ± 2 dB
-2 ± 1.5 dB
+2 ± 1.5 dB
WF
-2 ± 1.5 dB
-4 ± 1.5 dB
-2 ± 1.5 dB
TW
+2 ± 1.5 dB
-3 ± 2 dB
WF
-3 ± 2 dB
WF
< -58 dBu
TW
15