JL Audio CR-1, Руководство пользователя

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Damping Controls
There are two “Damping” controls on the CR-1, one in the Subwoofer Section
and another in the Satellite Section of the front control panel. This precision
tuning feature allows you to compensate for loudspeaker response variations in
the crossover region. The “Damping” controls work by altering the damping of
the crossover filters. In technical terms, the controls raise or lower the “Q” factor
of each filter. However, the number markings on the “Damping” controls are for
reference only and do not directly refer to any specific “Q” value.
In plain language, the Subwoofer and Satellite “Damping” controls allow the
small frequency ranges around each filter’s initial roll-off region to be boosted
(+) or cut (–), outside of the standard Linkwitz-Riley filter alignments. When
set correctly, the “Damping” controls provide a final “tweak” to an expertly
integrated subwoofer system. For best results, the “Damping” controls should
only be addressed after the subwoofer(s) have been set correctly for polarity and
phase (refer to your subwoofer manuals for details).
If the crossover region sounds “thin,” turn the knobs to the right towards
the “+” numbers, creating a rise in response near the filter’s cutoff frequency.
If the crossover region sounds “thick” or exaggerated, turn the knobs to the left
towards the “–” numbers, creating a softer corner around the filter’s cutoff frequency.
See the diagram for a visual explanation of the “Damping” controls’ effects.
Frequency (Hz)
10 1 100 1K 10K
Voltage (dB)
-50
-40
-30
-20
-10
0
10
Subwoofer / Satellite Damping = +5
Subwoofer / Satellite Damping = Ø
Subwoofer / Satellite Damping = -5
Satellite Subwoofer
100 Hz Crossover Frequency
Effects of “Damping” controls on frequency response (low-pass and high-pass filters are shown)