Crown Audio IQ-PIP-USP2_CN - Manual (Page 29)

IQ-PIP-USP2/CN
Page 29 IQ-PIP-USP2/CN Reference Manual
* The low and high-pass equalization fil-
ters can be cascaded to form unique
inter-order crossover-type filters.
7.6.2 High-Pass Crossover
Filter
Description: This filter rolls off low
frequencies at a rate determined by
the shape parameter. The filter is
commonly used to feed the high
frequency portion of an audio signal
to horns or tweeters. It can be com-
bined with a low-pass crossover fil-
ter to create a band-pass crossover
filter for driving mid-range drivers.
• • • • • Passband gain: Fixed at unity.
• • • • • Frequency: Sets the –3 dB
corner frequency of the filter. The
range is 20 Hz to 20 kHz.
• • • • • Shape: Sets the response
shape of the filter. See Section
7.6.1 for available response
shapes.
7.6.3 Parametric Equalization
Filter
Description: This filter boosts or cuts
a relatively narrow frequency band
like a band-pass filter. It is com-
monly used to correct specific
anomalies in the response of driv-
ers.
• • • • • Passband Gain: Sets the
amount of boost or cut for the
filter. The range is +12 dB to –24
dB.
• • • • • Frequency: Sets the center
frequency of the filter. The range
is 20 Hz to 20 kHz.
• • • • • Q: Sets the width and slope of the
filter. The range is 0.1 to 34. The
lower the Q, the wider the filter
and the better the transient
response and visa versa.
7.6.4 Low-Pass Equalization
Filter
Description: This filter combines the
functions of the parametric equal-
ization filter to boost or cut a rela-
tively narrow frequency band with a
low-pass filter to roll of the frequen-
cies above the center frequency.*
• • • • • Frequency: Sets the center
frequency of the filter. The range
is 20 Hz to 20 kHz.
• • • • • Q: Sets the width, slope and gain
of the filter. The range is 0.1 to 34.
The lower the Q, the wider the
filter, the lower the gain and the
better the transient response
and visa versa. Gain examples:
A Q of 2 will result in 6 dB of gain
at the center frequency and a Q
of 4 will result in 12 dB of gain.
7.6.5 High-Pass Equalization
Filter
Description: This filter combines the
functions of the parametric equal-
ization filter to boost or cut a rela-
tively narrow frequency band with a
high-pass filter to roll of the frequen-
cies below the center frequency.* It
is commonly used to create a B
6
(6th-order Butterworth) response in
a vented loudspeaker enclosure.