Yamaha M-4 Owner's Manual page 9

SPEAKERS
Output Power vs Intermodulation Distortion Characteristic
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SPEAKER
PROTECTOR
POWER SW
Al d. |
POWER
TRANSFORMER
POWER AMP
+80V
| +В
+65V
DC REG
LIMIT TER
зом
ተ 80V ВЕСТ
Output Power vs Distortion Characteristic
+12V
POWER IND (rey
+12 ВЕСТ |
Frequency vs Distortion Characteristic
PRE DRIVE AMP
CONTROL
5
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OUTPUT POWER {W} OUTPUT POWER (МЛ
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FREQUENCY (Hz)