Playing around with Bass Box Pro- A pair of Lab12's modelled in a push-pull sealed enclosure (non-isobaric) gives an spl of about 120db at 800 watts at about 100 hertz and an F3 around 43 hz with a moderately damped enclosure of 2 cubic feet.How would this system load a room size of 24x24 sq. feet at about 500 watts? Will one do or a pair of the above be necessary for deep punchy and fast bass?