30
Phonitor
Measurements
THD vs. Output Level (W)
Measuring output and input 600 Ohm, Volume control Phonitor 0 dB.
This measurement represents an analysis of THD values over the com-
plete output level range. High THD values can be perceived as rough
sounds and overemphasized highs. In usual operating ranges around
0 dBu, the Phonitor‘s THD values are extremely low. With a 0 dB input
signal and 600 Ohm headphones the SPL is at ca. 83 dB (stereo signal
in 3 cm distance). Volumes that would result from 10 dBu are already far
above healthy levels.
THD vs. Frequency
Measuring output and input 600 Ohm, Volume control Phonitor 0 dB.
THD vs. frequency range from 10 to 20 kHz at 0 dB over both channels.
The values are extremely low below 0.005% throughout the whole
range; even in long sessions this ensures listening without ear fatigue.
Audio Precision
05/27/08 10:22:37
Phonitor Model 2730 THD+N ratio
0.001
0.01
0.002
0.003
0.004
0.005
0.006
0.007
0.008
0.009
%
10
20k
20
50
100
200
500
1k
2k
5k
10k
Hz
