Ashly XR4001 XR Series Stereo 4-Way Electronic Crossover

Ashly crossovers are the product of an intensive research effort 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 Ashly's 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 2 adjacent frequency band outputs always remain in phase. These 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. They also include a 200:1 tuning range, output mute switches, and both TRS and XLR connectors. Like other Ashly products, these crossovers feature 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.

These crossovers can be easily reconfigured for nonstandard operation. For example, a 4-way crossover can easily be used as a mono 2-way with tunable subsonic and ultrasonic cutoff filters, and a stereo 3-way can function as a mono 5-way crossover. No internal modifications are necessary, and audio performance is not compromised. To allow a wide tuning range, the crossovers use a recessed range switch for each frequency control. LED indicators provide range status as soon as the unit is powered on. The range switch divides the frequency indicated on the frequency control by 10 and gives a total range of 200:1 for each control. Ashly crossovers feature a peak detection circuit which monitors signal level at several critical points in the crossover: input, filters, and outputs. The LED will flash when signal levels of +20dBu are reached anywhere in the crossover. Since our crossovers have a nominal 23dB of headroom referenced to a standard operating level of 0dBu (.77 Volts), a flashing LED warns you that you are only 3dB from clipping.

Product Features
Ý 24 dB/octave slope using fourth-order state-variable filters.

Ý Variable filter response for Linkwitz-Riley and other filter characteristics.

Ý Accurate, wide-range continuous tuning for flexibility of application.

Technical Info

Controls
Input Level: Full-off to +8dB

Crossover Frequency: 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, quasi-balanced (terminate with >600 Ohms)

Max. Input Level
+23dBu

Max. Output Level
+23dBu

Frequency Response
+/-.5dB 20Hz-20kHz

Total Harmonic Distortion (THD)
<.05% 20Hz-20kHz

Slew Rate
6V/uS

Hum and Noise
-90dBu

Power Requirements
120VAC, 50-60Hz, 5W

Size (W x H x D)
19 x 3.5 x 6 in.

Shipping Weight
10 lbs.