這還不如換整機

所有跟帖： 

• 確實想換整機，但想問問variable speed會比2 stage安靜很多嗎？ -kitfrommars- ♀ (0 bytes) () 04/25/2024 postreply 11:06:12

• about 10dB difference close to blowing motor. about 10x -RomaVacation- ♂ (613 bytes) () 04/25/2024 postreply 11:23:02

• 這是內機還是外機的區別呀？我隻需要內機安靜點 -kitfrommars- ♀ (0 bytes) () 04/25/2024 postreply 12:21:39

• Blowing motor noise (in door). No one know how good sound -RomaVacation- ♂ (96 bytes) () 04/25/2024 postreply 23:44:40

• Db 是對數, 10DB 能量差10倍。 3db差不對是2 x倒是沒錯 -Ridetolight- ♂ (0 bytes) () 04/25/2024 postreply 14:44:13

• Thanks for pointing that. I fixed it. I used 10dB~ 3x3dB -RomaVacation- ♂ (0 bytes) () 04/25/2024 postreply 23:45:58