3-way XM44 shown

Available 1-way, 2-way, 3-way or 4-way.

Steep 24 dB/octave 4-th order slope (Linkwitz-Riley) standard. Up
to 48 dB/octave optional.

Any slope available (6,12,18,24,30,36,42 or 48 dB/oct)

Asymmetric or symmetric slopes (different slopes can be mixed)

Crossover frequency 20Hz - 20 KHz.

Subwoofer summing switch.

Heavy duty gold plated RCA connectors for input and output.

Standard 12 position attenuators, 1 dB/step, for level
control on all outputs; 24 position attenuators optional.

Options: Balanced outputs/inputs, baffle step compensation,
notch/boost filters, delay sections and bass boost filter
(Linkwitz transform).

The XM44 Electronic Crossover Network is a very flexible
crossover design that provides individual outputs for 1, 2, 3 or 4
frequency bands on the 1- 2- 3- and 4-way models respectively. The
crossover frequency of XM44 Electronic Crossover Network can
easily be set by replacing frequency modules. Each frequency
module has the capacitors and resistors that set the crossover
frequency and slope for that channel. Normal slope is 24 dB/oct,
4th order, constant voltage, but modules for first, 2nd, 3th, 4th,
5th, 6th, 7th and 8th order slopes are also available. When
choosing slopes of 24 dB/octave and 48 dB/octave the high-pass and
low-pass outputs of the crossover are always in phase with each
other (Linkwitz-Riley alignment). Note that the slopes on the low,
mid and high channels can be different, so asymmetrical slopes are
possible. For example, a 2-way XM44 can easily be set with 6
dB/oct on the high pass and 18 dB/oct on the low pass by choosing
appropriate frequency modules. One set of frequency modules is
included whith the XM44 crossover. Muting relays ensure there are
no transients during turn-on or turn-off.

Optional plug-in modules are also available for special features
like delay, bass boost(Linkwitz transform), baffle step
compensation and notch filter.

The XM44 is available as a 1-way version, 2-way version, 3-way
version and a 4-way version.

The XM44front panel has 1, 2, 4 or 6 calibrated level controls
(for left and right ) for each channel. The level controls are 12
position stepped attenuators with 1 dB steps. This allows for very
precise and repeatable setting of the output levels. A sum switch
allows the low pass channels to be summed. This is useful when
using the XM44 with a common subwoofer.

Options for the XM44 include balanced inputs/outputs. Rackmount
brackets are also available.

Also available an an option are 24 position stepped attenuators
instead of the standard 12 position attenuators for level control.
These 24 position stepped attenuators are calibrated in 0.5 dB
steps and allow very accurate setting of the levels for each
output.

SPECIFICATIONS:

Frequency response: DC to 100 Khz, +/- 1 dB

Crossover frequency choice: 20Hz - 20KHz

Insertion gain: +6 dB with level controls at maximum.

0 dB (unit gain) with level controls at center.

Filter slope: 24 dB/octave standard, up to 48dB/octave.

Harmonic distortion at 1 KHz: Less than 0.001%

Signal-to-noise ratio: Better than 110 dB

Input impedance: 100K

Output load capability: 1 KOhm min.

Output impedance: 50 Ohms

Maximum input voltage: 5 V RMS

Power supply requirement: 117VAV/230VAC 1A fuse

Dimensions: 17" x 3.5" x 11"

Shipping weight: approx. 15 pounds (7 Kg)

ORDERING INFORMATION:

XM44-1AA......Electronic crossover, 1-way model (low-pass or high-pass only).

XM44-2AA......Electronic crossover, 2-way model.

XM44-2FBA.....Electronic Crossover, 2 way, fully balanced

XM44-3AA......Electronic crossover,3-way model.

XM44-4AA......Electronic crossover,4-way model.

XM44-FMA......Frequency module , (4 required for each xover frequency point)

XM44-BAL......Balanced option.

XM44-RACK.....Set of rackmount brackets

When ordering please specify the crossover frequency. We have
frequencies from 20Hz to 20KHz available.

Front panel of the XM44 3-way

Ideal for custom installing into other equipment, like
amplifiers, etc. The XM44EMB has two channels on a single circuit
board. Each channel takes one or two XM44 frequency modules. This
allows each channel to be hi-pass, low-pass, bandpass, etc. Each
channel has an input that can be configured as single ended or
balanced. The outputs are single ended only. There is an output
level control adjustment for each or the two channels. The board
needs dual +/-15Volt supply (+/-6V to +/-18V is acceptable).
Supply voltage can be from +/-6V to +/-18V. The size of the
circuit board is 2.5" x 5.5". Total height, includung 0.5"
mounting standoffs and the frequency modules, is 2.5".