?????????????????????????????????????????????

????????????????????????????????????????????????????????????????????????????￡???????????????????????????????????????????????????????????????????С???

?ū???????????????????????????繦?????ɡ??????????繦?????????????????????????????в???????????????2????????????????????????????????繦??=???????????+?????????????

??????????????????????繦??????????????????????????????????????С??????????Ч?????????????????Ч???????

?????Ч??????????1???????

?????Ч??= ???????????/????????繦??*100%

?????????????繦????????????????3?????????

1/8 Power??1/3 Power??Maximum Power??

????????????????

1/8 Power?????????????????????????????????????

1/3 Power?? ???????????????????

Maximum Power??????????1%????????????????????

???????????????????????????????ж???????????Щ??????????????б??1/8 Power??1/3 Power????????????軔????跡?μ??????????8??3???ó????跡??1/8 Power??1/3 Power????????????

???????LAB FP6400??????????????????????????????????????ù?????????С??????????LAB FP6400???????????е?????

FP6400 Power 1/3 Power 1/8 Power Idle

8 ohms 2?? 1300W 1230W 575W 105W

4 ohms 2?? 2300W 1975W 900W 105W

2 ohms 2?? 3200W 2950W 1290W 105W

??????ù????????????????????2????4 ohms???????????????????????????????????Ч??????????????????????????????????????2????4 ohms????????????????????????

????????2????4 ohms??1/3 Power??1975W??????????????繦??????????????????????2???????????????????????????????4000?????????????????

??潲?????????????????????????繦??=???????????+????????????????????????????????2????4 ohms??1/3 Power????μ??????????????????Ч???

1/3 Power??????????=2300/3??2=1533W

???????2????4 ohms??1/3 Power????繦?????1975W??

????????=??繦??-???????=1975-1533=442W

?????Ч??=???????????/????????繦??*100%=1533/1975??100%=77.6%

????????????"AB??????????????50%??H????60%-70%??D???80%????"??????????????????????????????????????H?????????????????????Ч????????к???????????????LAB FP6400??Ч?????77.6%????????????????????????????Ч????

???????????????綥??????CREST AUDIO????壩?????????????±????±???CREST AUDIO???????????PRO9001???Щ????????

4 ohms Stereo Power?? 2??2050W

Class?? H

1/3 Power Curr Draw?? 30A??120V??4 ohms??

??????????PRO9001??2????4 ohms??1/3 Power????μ??????????????????Ч???

1/3 Power??????????=2050/3??2=1367W

1/3 Power????繦???=30??120=3600W

????????=??繦??-???????=3600-1376=2233W

?????Ч??=???????????/????????繦??*100%=1376/3600??100%=38%

?????H??????LAB FP6400??Ч????77%????CREST AUDIO PRO9001??Ч??????38%????????CREST AUDIO AB?????Ч???

?±???CREST AUDIO???????????PRO3301???Щ????????

4 ohms Stereo Power?? 2??330W

Class?? AB

1/3 Power Curr Draw?? 9A??120V??4 ohms??

?????PRO3301??2????4 ohms??1/3 Power????μ??????????????????Ч???

1/3 Power??????????=330/3??2=220W

1/3 Power????繦???=9??120=1080W

????????=??繦??-???????=1080-220=860W

?????Ч??=???????????/????????繦??*100%=220/1080??100%=20%

????????????????????"???????"?????"AB??????????????50%??H????60%-70%??D???80%????"????????????????????????

???????????????????????????????1/3 Power????繦???????????????2???????????????????????????????????????