Output Noise
We use a Class 1
Bruel & Kjaer 2250-L G4 sound analyzer, equipped with a Type 4955a microphone that features a below 6 dBA and up to 110 dBA-weighted dynamic range. All tests are conducted inside a hemi-anechoic chamber at 25-28 °C ambient, and the NAS is placed a meter away from the sound analyzer.
Output Noise Comparison Graphs
The following graphs show the DS918+'s output noise and compares it to that of other units we have tested in the past.