Measurements were made against a standard baseline of background noise in each session using a Sonarworks XREF 20 embedded in a foam shielded cone at a distance of 180mm from the tweeter face.
Total Hiss is calculated across a 1-20KHz spectrum as the sum of deviations from the baseline. Peak Hiss records the maximum spike above the baseline at a specified frequency. However, we have not biased these figures in favour of audibility. Self-noise artefacts at 14KHz are less obtrusive than those occurring at 4KHz , but may still contribute to a relatively high Total Hiss figure. For the full picture, please refer to the graphs in the table below.
Where the monitor has adjustable gain or volume control, readings were taken at maximum and minimum gain, and at a midpoint – typically 0dB. In all cases higher numbers indicate more audible self-noise.
At a listening distance of 1m, peak hiss of 6dB at 180mm is typically not audible. Broadly, monitors scoring 150 or less on the Total Hiss scale can be considered unobtrusive. However, a peak hiss in excess of 10dB at 180mm may be audible at distances of up to 2m, depending on ambient noise and the acuity of the listener.
QUIETEST AT USEABLE VOLUME:
|113 (7dB peak)||Adam S Series at -15dB|
|156 (9dB peak)||Yamaha HS Series at 0dB|
|241||ADAM T Series at 0dB|
|245||Fostex PM Series at 0dB|
|251||Dynaudio LYD at 0dB|
NOISIEST AT ANY VOLUME:
|873 (20dB peaks)||Kali IN8 at max gain|
|864 (20dB peak)||KRK G4 at max gain|
|544||ADAM S Series at max gain|
|479||ADAM T Series at max gain|