确实想换整机，但想问问variable speed会比2 stage安静很多吗？

所有跟帖： 

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

• 这是内机还是外机的区别呀？我只需要内机安静点 -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 是对数, 10DB 能量差10倍。 3db差不对是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