XM26 Tube Electronic Crossover

Uses Vacuum Tube technology for superior sound quality.
Steep 24 dB/octave slope.
Slopes of 6dB/oct, 12dB/oct , 18dB/oct and 24dB/oct available.
Crossover frequencies available: 20Hz - 20KHz.
Subwoofer summing switch.
Heavy duty gold plated RCA connectors for input and output.
Fourth-order constant-voltage design (Linkwitz-Riley).
Outputs are always in phase.
No transients during turn-on or turn-off.
Toroidal power transformer.

The XM26 Electronic Crossover Network is a fourth- order constant-voltage crossover design that provides both low-pass and high-pass outputs. The slope of each output is normally 24 dB/octave and, because of the fourth-order design, the high-pass and low-pass outputs of the crossover are always in phase with each other. Other slopes of 6dB/oct, 12dB/oct or 18dB/oct are available.
The XM26 uses 4 12AX7 tubes in each of the two channels. It has a solid state regulated power supply for the filament voltage. Power is provided with a heavy duty toroidal power transformer.
The crossover frequency of XM26 Electronic Crossover Network can easily be set by replacing a frequency module. A total of four frequency modules set the crossover frequency for left and right, low and high pass filters. 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 (Linkwitz-Riley), but modules for first, second and third order slopes are also available.
The XM26 front panel has 4 calibrated level controls using stepped attenuators, one for each low pass and high pass, for left and right channel. A sum switch allows the low pass channel to be summed. This is useful when using the XM26 with a common subwoofer.
Available options include 24 position stepped attenuators instead of the standard 12 position attenuators for level control. The 24 position stepped attenuators are calibrated in 0.5 dB steps and allow very fine setting of the levels for each output.
Balanced inputs/outputs are also available as an option.
The XM26 is also available as 1-way instead of 2-way. The 1-way can be used as low-pass only to drive subwoofers or as high-pass only.

Frequency response: 5Hz to 100 Khz, +/- 1 dB
Crossover frequency choice: 20 Hz - 20 Khz
Insertion gain: -1 dB with level controls at max
Filter slope: 6,12,18 or 24 dB/Octave
12 step attenuator step: 1 dB/step (standard)
24 step attenuator step: 0.5 dB/step (optional)
Harmonic distortion at 1 Khz: Less than 0.1%
Signal-to-noise ratio: Better than 110 dB
Input impedance: 500K Ohm
Output load capability: 10 Kohm min.
Output impedance: 500 Ohms typical
Maximum input voltage: 25 V peak-peak (10 V RMS)
Power supply requirement: 110V AC. 1A or 220VAC 1/2 amp
Dimensions: 17" x 3.5" x 11" (wxhxd)
Shipping weight: approx. 15 pounds (7 Kg)

XM26-AA.......Tube electronic crossover .
XM26-1AA......low-pass/high-pass only tube electronic crossover
XM26-FMA......Frequency module (4 required,included)

When ordering please specify the crossover frequency and slope.

(C) 2020 Marchand Electronics Inc. Last updated 17 May 2020