Ashly's XR-Series crossovers are based upon a powerful
state-variable filter circuit guaranteeing that two adjacent frequency
band outputs always remain in phase. Our crossovers offer a number of
useful and unusual features, including continuous tuning, a response control,
and a unique output stage which maintains low noise at any level setting.
These models also include a 200:1 tuning range, individual output mute
switches, and both TRS and XLR connectors. Like other Ashly products,
your crossover features low noise and distortion, active balanced inputs,
a peak level indicator, a precision regulated power supply, protection
against abnormal input or output conditions, and rugged mechanical construction.
Conservative design and an unusually thorough procedure for quality control
have earned Ashly a reputation for dependability in the recording, sound
reinforcement, and broadcast fields.
Response Control; an Ashly Exclusive...
This control, found adjacent to the crossover frequency control, adjusts
the damping of the filter affecting the response shape of the filters
at the crossover point. This helps offset the inaccuracies inherent in
typical loudspeakers, thereby helping you to achieve a flat system response.
Dial calibrations refer to the amount of attenuation effected by the filter
at the crossover frequency, i.e., a setting of 3dB means that the filter's
high-pass and low-pass outputs are each "rolled off 3dB at the crossover
point". This describes Butterworth filter response, or a gentle 3dB
peak at the crossover point when the two filter output signals overlap.
To obtain a flat signal, or "Linkwitz-Riley" response through
the crossover region, set the Response control to "6". This
attenuates each output of the filter by 6dB at the crossover point (two
identical signals added together yield a +6dB increase). To obtain a notch
at the crossover point, turn down the response control past "6"
to best suit your needs.
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