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

????????????????????????????????????????????????????????????????????????????锟�???????????????????????????????????????????????????????????????????小???

?奴???????????????????????????绻�?????伞??????????绻�?????????????????????????????胁???????????????2????????????????????????????????绻�??=???????????+?????????????

??????????????????????绻�??????????????????????????????????????小??????????效?????????????????效???????

?????效??????????1???????

?????效??= ???????????/????????绻�??*100%

?????????????绻�????????????????3?????????

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

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

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

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

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

???????????????????????????????卸???????????些??????????????斜??1/8 Power??1/3 Power????????????杌�????璺�?渭??????????8??3???贸????璺�??1/8 Power??1/3 Power????????????

???????LAB FP6400??????????????????????????????????????霉?????????小??????????LAB FP6400???????????械?????

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

??????霉????????????????????2????4 ohms???????????????????????????????????效??????????????????????????????????????2????4 ohms????????????????????????

????????2????4 ohms??1/3 Power??1975W??????????????绻�??????????????????????2???????????????????????????????4000?????????????????

??娼�?????????????????????????绻�??=???????????+????????????????????????????????2????4 ohms??1/3 Power????渭??????????????????效???

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

???????2????4 ohms??1/3 Power????绻�?????1975W??

????????=??绻�??-???????=1975-1533=442W

?????效??=???????????/????????绻�??*100%=1533/1975??100%=77.6%

????????????"AB??????????????50%??H????60%-70%??D???80%????"??????????????????????????????????????H?????????????????????效????????泻???????????????LAB FP6400??效?????77.6%????????????????????????????效????

???????????????缍�??????CREST AUDIO????澹�?????????????卤????卤???CREST AUDIO???????????PRO9001???些????????

4 ohms Stereo Power?? 2??2050W

Class?? H

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

??????????PRO9001??2????4 ohms??1/3 Power????渭??????????????????效???

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

1/3 Power????绻�???=30??120=3600W

????????=??绻�??-???????=3600-1376=2233W

?????效??=???????????/????????绻�??*100%=1376/3600??100%=38%

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

?卤???CREST AUDIO???????????PRO3301???些????????

4 ohms Stereo Power?? 2??330W

Class?? AB

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

?????PRO3301??2????4 ohms??1/3 Power????渭??????????????????效???

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

1/3 Power????绻�???=9??120=1080W

????????=??绻�??-???????=1080-220=860W

?????效??=???????????/????????绻�??*100%=220/1080??100%=20%

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

???????????????????????????????1/3 Power????绻�???????????????2???????????????????????????????????????