xm44 inside3-way XM44 shown

XM44 Electronic Crossover

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.

Frequency response: DC to 100 Khz, +/- 1 dB
Crossover frequency choice:20Hz - 20KHz
Insertion gain: +6 dB with level controls at maximum.
0 dB (unity gain)controls at center.
Filter slope: 24 dB/octave standard ,48dB/octave.
Harmonic distortion : Less than 0.001% at 1 KHz
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)

XM44-1AA......Electronic crossover, 1-way model (LP or HP only).
XM44-2AA......Electronic crossover, 2-way model.
XM44-2FBA.....Electronic Crossover, 2 way, fully balanced (internally balanced)
XM44-3AA......Electronic crossover,3-way model.
XM44-4AA......Electronic crossover,4-way model.
XM44-FMA......Frequency module ,(4 required for each 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


Embedded solutions

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, including 0.5" mounting standoffs and the frequency modules, is 2.5".

(C)2020 Marchand Electronics Inc. Last edited 14 May 2020