Synology DS420j 4-bay NAS Review 34

Synology DS420j 4-bay NAS Review

Performance Rating & Performance per Dollar »

Output Noise

I use a Class 1 Bruel & Kjaer 2250-L G4 sound analyzer with a Type 4955a microphone that features a weighted dynamic range of below 6 dBA and up to 110 dBA. All tests are conducted inside a hemi-anechoic chamber at 25–28 °C ambient, and the test subject is placed a meter from the sound analyzer.



Output Noise Comparison Graphs

The following graphs show the output noise of the DS420j and compare it to that of other units I have tested in the past.

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Jan 9th, 2025 02:04 EST change timezone

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