EC-2 Specifications

The crossover shall be a dual channel 2 way or single channel
3 way unit in a steel chassis six inches deep and one rack
unit high. There shall be a rear panel switch to put the unit
into either mode. The crossover shall have true Linkwitz Riley
24 dB per octave, phase corrected state variable filters.
The front panel shall feature controls for Low and High
frequencies in dual channel mode, and Low, Mid and High
frequencies in single channel mode. There shall also be two
LED indicators to show crossover mode status.
There shall be corresponding outputs on the rear panel, plus a
separate mono low frequency summed output. Each output will
have up to +6dB of gain available, to compensate for
amplifiers and speakers of differing sensitivities. There
shall also be a preset 30 Hz High Pass filter to remove
unwanted subsonics.
The unit shall have electronically Balanced inputs, on
TipRingSleeve (TRS) jack connectors (Tip +, Ring -, Sleeve
Ground), and XLR connectors, with passive RFI filters and an
Input impedance of 20 Kohms (10 Kohms unbalanced). 
The Input headroom shall be +21dB, with a CMRR of better than
50dB, and the frequency response shall be 30 Hz, -0.5dB (as a
function of the High Pass filter) to 20 KHz, +0.16dB. 
The Outputs shall also be Balanced, on XLR connectors, with an
output impedance of 300 ohms balanced (150 ohms unbalanced),
and the maximum Output level shall be +21dB, with a Signal to
Noise ratio of -93dB 'A' weighted (-90dB unweighted). 
Total Harmonic Distortion shall be .004% @ 0dB, 1 KHz, and the
unit shall have a dynamic range of 111dB.
AC Power shall be supplied via a removable mains cable,
connecting to an IEC connector with an integral fuse and
voltage change switch on the unit's rear panel.
The crossover shall be the ARX EC-2.