The info on the sub is scarce. At first I thought that Equator guys were crazy enough to devise 18" coax main monitors. Here's the skinny -
Frequency Response (-6dB): 15Hz - 180Hz
Recommended Line Level Input: 10mV-2V
Amplifier Power (LF): 1000W
Amplifier Peak Power (LF): 2000W
Sensitivity: 1w/1m output, 103dB
Max SPL: ≥129
Input Impedance: 10kΩ
L.F. Driver VC Size: 4”
L.F. Driver (4- ohm): 18”
Crossover Frquency: Software Configurable
Inputs: XLR, USB, RS485 in/thru, ¼” phone jack
Protection: Compression (LF), thermal, short circuit, under voltage
Magnetic Shielding: No
Enclosure alignment: Bass-reflex
Enclosure Construction: 1” HDF baffle & 3/4” 13 layer Baltic Birch
Finish: Black/Micro-Metallic Gray
Dimensions H x W x D (in.): 29 x 25 x 25
Shipping Weight (lbs.): 160
Originally these sold for around 5k$, but now I'm able to get one for 800EUR shipped.