I wrote about UNI-T UT353 Sound Level Meter a few month ago as I thought it could be a neat way to measure fan noise on some TV boxes and mini PCs in an objective way. I finally ended up buying Benetech GM1352 model instead for $13.9 on DX, but I did not really use so far, since I did not get a new device with fan. I’ve now had the chance to try it as Voyo VMac Mini comes with a fan.
Let’s just go through some of GM1352’s key features first:
- Noise Levels & Accuracy – 30 to 130 dB with +/- 1.5 dB accuracy (94dB @ 1 KHz)
- Frequency Range – 31.5 to 8 KHz
- Measurement features – MAX/MIN & Data hold
- Display – 1.7″ LCD display with backlight
- Buttons – Power/Backlight, MAX/MIN/Normal selection, HOLD
- Power Supply – 3x AAA batteries (included)
- Dimensions – 15.7 cm x 5 cm x 2.8 cm
- Weight – 81 grams
Now that we got that out of the way, I’ve done some measurements inside a quiet room, with fans, an airplane flying over my house, etc… When possible, I placed the microphone two to three centimeters from the noise source.
Here are the results of my little experiment.
|Noise Level (dBA)|
|Voyo Vmac Mini||52.3|
|Tower PC idle||58|
|Tower PC high load||67.5|
|Plane over the house||68|
|Running Tap Water||86|
My main PC is really noisy, so if you have numbers in the 58 dBA range with the mic at 2 to 3 cm from the fan, it’s already pretty loud. Voyo VMac Mini fan is much quieter, but at 50.2 dBA, it will still annoy some people, although it does not run all the time. It’s a little noisier than the fan on Beelink BT7 mini PC, which I found to be pretty quiet, but some people found it really loud.