This is an impressive box.
Have a relatively compact, it hides under its small measurements (64 X 55 X 53 cm) a fiery temperament.
Listed building, it's serious too. The box is good against plywood covered with a thick black paint finish of the most beautiful effect.
It is equipped with a thick steel grill painted black, covering the entire front of the box.
Inside, there is a woofer 18 "(18H GM) loaded bass reflex. Two good-sized vents open into the lower chamber.

Some figures:
- Power: 700 Watts RMS into 8 Ohms
- Frequency response: 30 Hz / 300 Hz
- Max SPL: 133 dB
- Weight: 40.3 kgs
- Connection: dual Neutrik Speakon NL4

Filtered at 100 Hz with the CT1 controller mk3 brand, this box is amazing.
The bass it delivers is deep, round, warm. Not a breath or heel of the membrane of HP. It is superb.
In addition, he does not mind conceding power.
In short, it is excellent. I adopted the brand DAS, a few years ago and even today I do not really regret my purchase this brand.

[ps] Attenction, the picture there in the header does not match the SUB-18R, it is the old 18 SUB.