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MLS 304 Series, MLS 406 Series • Reference Material
PRELIMINARY
Frequency Response Graph for the Loudness Feature
The following graph represents the frequency response of these MLS models when
the loudness feature has been turned on.
+10
+8
+6
+4
+2
+0
-2
-4
-6
-8
20 50 100 200 500 1k 2k 5k 10k 20k
1 W
3 W
6 W
14 W
0.5 W
Frequency (Hz)
Loudness (dB)
Audio Reference Levels
The specifications for the audio source devices may be listed in one of several units.
Or you may wish to use a sine wave generator such as the Extron VTG 300 as a
source for setting up audio inputs before the input devices are available. The tables
below are a convenient reference for equivalences between dBV, voltage, and dBu.
dBV Voltage dBu
-20 dBV 0.100 V -17.8 dBu
-19 dBV 0.112 V -16.8 dBu
-18 dBV 0.126 V -15.8 dBu
-17 dBV 0.141 V -14.8 dBu
-16 dBV 0.158 V -13.8 dBu
-15 dBV 0.178 V -12.8 dBu
-14 dBV 0.200 V -11.8 dBu
-13 dBV 0.224 V -10.8 dBu
-12 dBV 0.251 V -9.8 dBu
-11 dBV 0.282 V -8.8 dBu
-10 dBV 0.316 V -7.8 dBu
-9 dBV 0.355 V -6.8 dBu
-8 dBV 0.397 V -5.8 dBu
-7 dBV 0.447 V -4.8 dBu
-6 dBV 0.501 V -3.8 dBu
-5 dBV 0.562 V -2.8 dBu
-4 dBV 0.631 V -1.8 dBu
-3 dBV 0.708 V -0.8 dBu
-2 dBV 0.794 V 0.2 dBu
-1 dBV 0.891 V 1.2 dBu
0 dBV 1.000 V 2.2 dBu
1 dBV 1.122 V 3.2 dBu
2 dBV 1.259 V 4.2 dBu
3 dBV 1.413 V 5.2 dBu
4 dBV 1.585 V 6.2 dBu
5 dBV 1.778 V 7.2 dBu
6 dBV 1.995 V 8.2 dBu
7 dBV 2.24 V 9.2 dBu
8 dBV 2.51 V 10.2 dBu
9 dBV 2.82 V 11.2 dBu
10 dBV 3.16 V 12.2 dBu
dBu Voltage dBV
-20 dBu 0.078 V -22.2 dBV
-19 dBu 0.087 V -21.2 dBV
-18 dBu 0.098 V -20.2 dBV
-17 dBu 0.109 V -19.2 dBV
-16 dBu 0.123 V -18.2 dBV
-15 dBu 0.138 V -17.2 dBV
-14 dBu 0.155 V -16.2 dBV
-13 dBu 0.174 V -15.2 dBV
-12 dBu 0.195 V -14.2 dBV
-11 dBu 0.218 V -13.2 dBV
-10 dBu 0.245 V -12.2 dBV
-9 dBu 0.275 V -11.2 dBV
-8 dBu 0.309 V -10.2 dBV
-7 dBu 0.346 V -9.2 dBV
-6 dBu 0.388 V -8.2 dBV
-5 dBu 0.436 V -7.2 dBV
-4 dBu 0.489 V -6.2 dBV
-3 dBu 0.549 V -5.2 dBV
-2 dBu 0.616 V -4.2 dBV
-1 dBu 0.691 V -3.2 dBV
0 dBu 0.775 V -2.2 dBV
1 dBu 0.870 V -1.2 dBV
2 dBu 0.976 V -0.2 dBV
3 dBu 1.095 V 0.8 dBV
4 dBu 1.228 V 1.8 dBV
5 dBu 1.378 V 2.8 dBV
6 dBu 1.546 V 3.8 dBV
7 dBu 1.735 V 4.8 dBV
8 dBu 1.974 V 5.8 dBV
9 dBu 2.184 V 6.8 dBV
10 dBu 2.451 V 7.8 dBV