What is cheap? I think they are cheap enough for me to go about 120 mi to look at them. A demo might not be possible though.
I will take a vom and make sure the drivers are not open.
Frequency Response: 44Hz - 200Hz(+-)4dB (-10dB @ 34Hz) @ 3 meters, 1/2 space anechoicUsable response to 2.5kHz SENSITIVITY: 103dB @ 2.83V, 1 meter, 1/2 space anechoic POWER HANDLING: 400 watts (44.7V) MAX CONTINUOUS OUTPUT: 127dB NOMINAL IMPEDANCE: 8 ohms, 5 ohms minimum @ 43Hz WOOFER: One 18" K-49-K die-cast aluminum frame woofer and one 15" KD-17 passive radiator CROSSOVER FREQUENCY: 150Hz ENCLOSURE MATERIAL: 1" baffle board; all sides 0.75" (19mm) plywood, internally braced, lined with acoustical foam. INPUT CONNECTIONS: Parallel-locking Neutrik® D-shell 0.25" phone jacks and red/black five-way binding posts. Input is fused (4-A recommended). COVERAGE ANGLE: Essentially omnidirectional below 150Hz DIMENSIONS: 26.9" (68.3cm) x 23.825" (60.6cm) x 24" (61.1cm) WEIGHT: 85 lbs. (38.6kg) Net/99 lbs. (45kg)