Magico LLC, the Leader in High-Performance Loudspeaker Design and Manufacture, is pleased to announce that the state-of-the-art MXO analog active crossover originally conceived and designed for the M9 loudspeaker system (@ 120Hz fixed) will also be available with high/low pass filtering (@ 55Hz fixed).  Implementing the same MXO platform, this purpose-built version will benefit end users worldwide who demand the ultimate performance in sub/main integration.  The MXO provides extremely transparent high/low pass filtering which relieves the main loudspeakers of the punishing low frequencies below 55Hz and sends extended low bass information to the powered subwoofers.  This level of analog upper and lower range signal management improves transparency and resolution in the main loudspeakers and allows the powered subwoofers to seamlessly integrate with the main speakers.

The MXO features an Active 2-Way, 24dB/octave, Linkwitz-Riley filter slope at 55Hz with a 0/180-degree phase option and 12dB gain per channel. Designed in-house, the MXO is a dual mono, fully balanced / discrete circuit topology design from input to output using the highest quality precision parts (resistors/capacitors) to ensure an extremely low noise floor with extended signal bandwidth and ultra-linear response.

Precision step attenuators provide 0.5 dB/step control with up to +/- 12dB of gain adjustment per channel using a proprietary design to ensure purity in the signal path.  The unique gain stage features software driven relays to control the circuit. A propriety technique is implemented to have one fixed resistor in series while maintaining a constant output impedance during volume changes to achieve optimized sound performance at all volume settings.  The open architecture of the MXO uses a modular card to motherboard design that enables the implementation of additional filter topologies or upgrades in the future.

The dual chassis design of the MXO isolates the sensitive filter processing circuitry from the separately housed power supply. Featuring oversized lab grade power transformers, the power supply regenerates AC and applies active regulation across every stage of the circuitry.

Designed and constructed with the same high standards found in the finest preamplifiers in the industry, the MXO seamlessly integrates main/subwoofer speaker systems offered by Magico or other manufacturers for any listening room setting, while maintaining ultimate transparency.

Fully populated, 4-way expansion (future upgrade).

MXO main and power supply rear connectors.

SPECIFICATIONS

Input Impedance Balanced:
44 kΩ (22 kΩ per leg)

Maximum Input Voltage:
15 V rms (+24 dBv)

Output Impedance Balanced:
100 Ω (50 Ω per leg)

Maximum Output Voltage:
15 V rms (+24 dBv)

Maximum Gain:
12db

SNR 1 V / 100 kΩ:
95dB (22Hz-22KHz, Unweighted at 0 db)

THD+N:
< 0.001 % at 1 V rms/100 kΩ load

All Pass Bandwidth:
10 Hz -200 kHz +/- 0.5 db

Channel Separation:
>115 dB at 10 kHz

Mains Voltage (Frequency):
100V (60 Hz) 115V (60 Hz) or 230V (50 Hz), factory-set.

Volume Control:
+/– 12 dB with 0.5 dB/steps, via front panel knob, each channel, each line

Phase Control:
independent for each output, via front panel push-button switches

Stereo Inputs:
Balanced L/R (2 XLR)

Main Line Outputs:
Balanced L/R: (2 XLR)

Subwoofer Line Outputs:
Balanced L/R: (2 XLR)

Subwoofer version Crossover Frequency

Filter frequency:
55 Hz

Filter Slope:
24 dB/octave, Linkwitz-Riley

Low Pass Frequency Response:
+0, -0.7 dB from 10 Hz to 35Hz, -6dB at 55Hz

High Pass Frequency Response:
+0, -0.7 dB from 100Hz up to 200 kHz, -6dB at 55 kHz

Dimensions

MXO Crossover:
8” H x 18” D x 20” W (20 x 46 x 51 cm)
MXO Power Supply:
8” H x 18” D x 20” W (20 x 46 x 51 cm)

Weight

MXO Crossover:
40 lbs. (18 kg)

MXO Power Supply:
60 lbs. (27 kg)