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Ashly XR-4001
Stereo 4-way Crossover |
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Ashly XR-4001
Stereo 4-way Crossover |
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Description:
The XR-Series crossovers have a design goal of producing a
crossover that is sonically accurate, is flexible enough to suit
a wide variety of systems, and affords maximum protection for
speakers and drivers. The XR4001 crossover is based upon a
state-variable filter circuit, which guarantees that two
adjacent frequency band outputs always remain in phase. The
crossovers offer a number of useful features, including
continuous tuning, a response control, and a unique output stage
which maintains low noise at any level setting.
Specifications:
The unit can be run as a stereo 4-way or mono 7-way, 24dB per
octave electronic crossover and is housed in a two rack space
chassis. Also included are a 200:1 tuning range, output mute
switches, and both 1/4" TRS phono and XLR connectors. The XR4001
features low distortion, active balanced inputs, a peak level
indicator, a precision regulated power supply and protection
against abnormal input or output conditions.
The response control adjusts the damping of the filter,
affecting the response shape of the filters at the crossover
point. The 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 a 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 on the XR4001, the response control should
be set 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, the response control should be turned down past "6". The
purpose of this control is to help offset the inaccuracies
inherent in typical loudspeakers, thereby helping you to achieve
a flat system response.
Key Features
Variable filter response allows tuning-in Linkwitz-Riley or
other filters
24dB/Octave slopes
Output mute switches
Peak overload warning LEDs
Balanced XLR and 1/4" TRS audio connections
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