Community VLF Series – Operation Manual - Page 8
ELECTRONIC CONTROLLER OPTIONS
VLF subwoofers are intended to be controlled by a digital signal processor (DSP) that directly precedes the
power amplifier in the signal chain. The controller processes the audio signal to provide an optimized signal
to the loudspeaker under all operating conditions. This results in improved frequency response, maximized
power handling, lower distortion and increased protection for the loudspeaker components.
Recommended DSP Settings for the VLF208
High-Pass Filter: Linkwitz 48 dB/Oct, 55 Hz
Low-Pass Filter: Butterworth 48 dB / Oct, 200 Hz (Varies based on the full-range system used)
Filter
Type
PEQ1 PEQ2 PEQ3 PEQ4
Frequency
58 Hz
70 Hz
110 Hz
248 Hz
Gain
+9 dB
+5.5 dB
-2 dB
-7 dB
Slope/Q 0.2
Oct 0.33
Oct 1
Oct
0.33
Oct
Figure 4: VLF208 Frequency Response Unprocessed (Raw Data):
70
80
90
100
10
100
1,000
Frequency in Hertz
dB
SP
L
10 Hz Resolution, 1/8 octave smoothing
Figure 5: VLF208 Frequency Response Processed:
70
80
90
100
10
100
1,000
Frequency in Hertz
dB
SP
L
10 Hz Resolution, 1/8 octave smoothing
Figure 6: VLF208 DSP Response Frequency:
