NewerTech Guardian MAXimus Whisper Quiet Test Results Recording Studio Quiet from 2 feet away! SPL mic distance 6 inches away SPL mic distance 2 feet away dB 42-43 dB dB 35 dB Testing Parameters: 2 Drive States Idle: Drive not reading/writing, not processing. Extreme Read/Write: AJA DiskWhakTest reading and writing 4GB of HD video to create mechanical load heat increase and cause the cooling fan to activate. dB Human Perception of Change 1 dB Subtle
Change
3 dB Barely
Noticable
5 dB Clearly
Noticable
10 dB Twice
as loud
20 dB Four times
as loud