• Active Crossover

• Stereo 4-Way

• Universal switching power supply; operates from 100 - 240VAC, 50/60Hz.
• Outputs are now servo-balanced.
• Power switch moved to the rear panel.
• Panel color has changed from gray to charcoal.
• Inside rack depth is eight inches.
• Power LED is blue

The XR-Series crossovers are the product of an intensive research effort started in 1972 which combined a reexamination of traditional crossover theory with practical field use. Over the years, a number of refinements and new models have been added to our crossover series, but the original design goals have remained the same: to produce a crossover which is sonically accurate, is flexible enough to suit a wide variety of systems, and affords maximum protection for speakers and drivers.

All Ashly crossovers are based upon the same powerful state-variable filter circuit, which guarantees 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, 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. 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 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.

The purpose of this control is to help offset the inaccuracies inherent in typical loudspeakers, thereby helping you to achieve a flat system response. NOTE: The Response control is not a "slope" control. A 24dB/octave crossover will always have a slope of 24dB/octave. The Response control only affects filter response shape in the immediate vicinity of the crossover frequency; the ultimate crossover slope is a fixed parameter.>

• 24dB/Octave Slopes
• Variable Filter Response Allows Tuning-In Linkwitz-Riley or Other Filters
• Output Mute Switches
• Balanced Inputs and Outputs
• 20Hz Third Order High Pass Filters
• XLR and 1/4" TRS Audio Connections
• Peak Overload Warning LEDs
• Five Year Warranty

Architect Specifications

XR-1001
The unit shall be a stereo two-way, switchable to mono 3-way, 24dB per octave electronic crossover in a one rack space metal chassis. The unit shall have separate front panel input level controls on both channels for interfacing with broad range of nominal system levels. Unity gain operation must be achievable by setting these controls at the “U” position.

Each of the units two channels shall have independent, infinitely variable adjustment of crossover frequency with controls located on the front panel. This control shall provide a total range of 200:1 when used in conjunction with the unit.s adjacent recessed RANGE switch. There shall be a RESPONSE control calibrated in decibels on each channel to adjust the damping of that filter at the crossover point, thus allowing variable system response adjustment to specific site requirements. The unit shall have separate clip indicators to monitor all internal amplifiers for any possible overload conditions.

Each channel of the crossover unit shall have a separate output level control and mute switch located on the front panel. The crossover shall be the Ashly model XR-1001. There shall be separate inputs and outputs for each channel on 1/4. TRS phone jacks and XLR connectors, any of which may be used balanced or unbalanced. There shall be a 1/4" TRS connector providing for a summed mono low output. which can be used balanced or unbalanced.

The crossover must be made in America and covered under a limited full Five Year warranty. The shipping weight shall be eight pounds, with an overall depth of eight inches. The unit must be manufactured by Ashly Audio Inc. of Rochester, New York. No other unit shall be acceptable unless data submitted from an independent test laboratory verifies that the above specifications are fully met or exceeded.

XR-2001
The unit shall be a stereo three-way 24dB per octave electronic crossover in a two rack space metal chassis. This same unit shall also be configurable as a four-channel two-way electronic crossover. The unit shall have separate front panel input level controls on all channels for interfacing with broad range of nominal system levels. Unity gain operation must be achievable by setting these controls at the “U” position.

Each of the units channels shall have independent, infinitely variable adjustment o crossover frequency with controls located on the front panel. This control shall provide a total range of 200:1 when used in conjunction with the unit.s adjacent RANGE switch. There shall be a RESPONSE control calibrated in decibels on each channel to adjust the dampng of that filter at the crossover point, thus allowing variable system response adjustment to specific site requirements. The unit shall have separate clip indicators to monitor all internal amplifiers for any possible overload conditions. Each channel of the crossover unit shall have a separate output level control and mute switch located on the front panel.

There shall be separate inputs and outputs for each channel on 1/4. TRS phone jacks and XLR connectors, any of which may be used balanced or unbalanced. In addition, there shall also be an independent mono summed output labeled MONO LOW OUT (on a separate 1/4. TRS jack and an XLR jack). The crossover must be made in America and covered under a limited full Five Year warranty. The shipping weight shall be ten pounds, with an overall depth of eight inches.

The crossover shall be the Ashly model XR-2001, manufactured by Ashly Audio Inc. of Rochester, New York. No other unit shall be acceptable unless data submitted from an independent test laboratory verifies that the above specifications are fully met or exceeded.

XR-4001
The unit shall be a stereo four-way 24dB per octave electronic crossover in a two rack space metal chassis. The unit shall have separate front panel input level controls on all channels for interfacing with broad range of nominal system levels. Unity gain operation must be achievable by setting these controls at the “U” position.

Each of the units channels shall have independent, infinitely variable adjustment of crossover frequency with controls located on the front panel. This control shall provide a total range of 200:1 when used in conjunction with the units adjacent RANGE switch. There shall be a RESPONSE control calibrated in decibels on each channel to adjust the damping of that filter at the crossover point, thus allowing variable system response adjustment to specific site requirements. The unit shall have separate clip indicators to monitor all internal amplifiers for any possible overload conditions.

Each channel of the crossover unit shall have a separate output level control and mute switch located on the front panel. There shall be separate inputs and outputs for each channel on 1/4. TRS phone jacks and XLR connectors, any of which may be used balanced or unbalanced. In addition, there shall also be an independent mono summed output labeled MONO LOW OUT (on a separate 1/4. TRS jack and an XLR jack). The crossover must be made in America and covered under a limited full Five Year warranty. The shipping weight shall be ten pounds, with an overall depth of eight inches.

The crossover shall be the Ashly model XR- 4001, manufactured by Ashly Audio Inc. of Rochester, New York. No other unit shall be acceptable unless data submitted from an independent test laboratory verifies that the above specifications are fully met or exceeded.

General Specifications

MODELS
XR1001: Stereo 2-way, Mono 3-way
XR2001: 4-channel 2-way, Stereo 3-way, Mono 5-way
XR4001: Stereo 4-way, Mono 7-way

CONTROLS
Input Level: Full-off to +8dB
Crossover Frequency:
XR1001, XR2001: 400Hz-8kHz (40Hz-800Hz*)
XR4001: 400Hz-8kHz (40Hz-800Hz*) (L-LM, LM-HM)
1.2kHz-24kHz (120Hz-2.4kHz*) (HM-H)
* using divide by 10 range switch

Range Switch: divides crossover freq. by 10
Response: -1.5dB to -12dB at xrossover point
Output Level: Full-off to +15dB


INPUT IMPEDANCE
20k Ohms, balanced bridging


OUTPUT IMPEDANCE
200 Ohms, servo-balanced (terminate with >600 Ohms)

MAX INPUT LEVEL
+23dBu

MAX OUTPUT LEVEL
+23dBu

FREQUENCY RESPONSE
+/-.5dB 20Hz-20kHz

TOTAL HARMONIC DISTORTION
<.05% 20Hz-20kHz

SLEW RATE
6V/uS

HUM AND NOISE
-90dBu

POWER REQUIREMENTS
100-240VAC, 50-60Hz, 24W

SIZE
XR1001: 19"W x 1.75"H x 8"D
XR2001: 19"W x 3.5"H x 8"D
XR4001: 19"W x 3.5"H x 8"D

SHIPPING WEIGHT
XR1001: 13 lbs
XR2001: 16lbs
XR4001: 16 lbs