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