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•
If you are using the PP50 DSP with the PP 7E or PP 7S subwoofers, please use the following
settings for the subwoofer channel high-pass filter crossover frequency:
49 Hz characte
-
ristics:
Self-Define Q-factor:
1.5
• Begin with a suitable setting for the subwoofer channel low-pass filter. A good initial value in
this respect is a crossover frequency of 80 Hz with a slope of -24 dB and a Butterworth charac-
teristics.
•
In many cases it is useful to relieve the front and rear loudspeakers from low frequencies using
a high-pass filter. The following settings have proven to meet the operational requirements for
the various loudspeaker sizes (LS): 6x9” or 20 cm LS:
high-pass filter –12 dB, Butterworth,
crossover frequency 40 Hz16.5 cm LS:
high-pass filter –12 dB, Butterworth, cross
-
over frequency 50 Hz13 cm LS:
high-pass filter –12 dB to –18 dB, Butterworth,
crossover frequency 70 Hz 10 cm LS:
high-pass filter -18 dB to –24 dB,
Butterworth, crossover frequency 80-100 Hz
•
Now set the phase control and the output level of the subwoofer channel so there is a harmo-
nious balance between the front/rear channels and the subwoofer even without the help of the
equalizer.
•
If it is not possible to achieve an even frequency response in the bass range using the settings
given above, you can use the equalizer for further adjustments in the subwoofer channel.
Important information about the PP50 DSP
