Technical data

33
EQ Frequency
This diagram shows a variation of center frequencies with the EQ Gain controller fully turned clock-
wise (HI). The x10 button shifts the complete frequency area by a factor of 10. With settings in the
border areas of the covered frequencies it is also possible to realize “almost” shelving lters, but in
these cases the level has to be adapted with the Gain controllers.
SC Gain
The blue curve shows an almost linear compression with a constant Gain reduction across the
complete frequency spectrum. If the SC Gain controller is set to High Pass (HP – green curve),
however, the low frequencies will not inuence the detection circuit and the Gain reduction sets in
only on higher frequencies. In Low Pass mode (LP – yellow curve) just the low frequencies are fully
processed and the intensity of the Gain reduction decreases with rising frequencies. Of course
there are a lot of useful interim values between the linear and the extreme positions.
-10
+10
-9
-8
-7
-6
-5
-4
-3
-2
-1
-0
+1
+2
+3
+4
+5
+6
+7
+8
+9
20 30k50 100 200 500 1k 2k 5k 10k 20k
Hz
dBr A
-10
+10
-9
-8
-7
-6
-5
-4
-3
-2
-1
-0
+1
+2
+3
+4
+5
+6
+7
+8
+9
20 30k50 100 200 500 1k 2k 5k 10k 20k
Hz
dBr A
REFERENCE - EQ Frequency & SC Gain