I’ve extracted the sounds for a Quick Comparison you can share.
The build quality of all these motors are good and very similar except for Dsservo Ds3225 being more economical.
- Dsservo Ds3225 25Kg Coreless - Economical and Loud
- Flash Hobby M45CHW 45Kg Coreless - “Silent”. Mostly quiet but has larger peak than DSC45M
- 9imod BLS-HV45MG 45Kg Brushless - Expensive and produces more sound then DSC45M but has a longer life and more power (update servo rate to 330 in firmware to make it smoother)
- 9imod DSC45M 45Kg Coreless - “Silent”. More noise produced than M45CHW but has lower peak
Note: This is only a basic comparison and does not fully represent the sound after assembly. You can view the fully assembled ~32min runtime video of the “9imod DSC45M 45Kg Coreless” in 9imod - Google Drive with the filename “VideoPro_20240817_003927-001.mp4”
The SR6 will produce more sound than the OSR2 as there are 2x more servos, and more movement.
Audio:
Waveform:
Waveform Amplified for visibility:
dB:
Spectrograph:
CraftHandy servo motor sound test quick all files.zip.txt (REMOVE .txt AND UNZIP) (1.1 MB)
Falafel has analyzed a similar product before for reference his dB meter was placed 30cm away. more info in thread #149037. This might help someone wanting to know about how loud it should be.
