In an array where the mids form a line and a single woofer is placed below it like http://www.parts-express.com/projectshowcase/indexn.cfm?proj ect=Colossi , how does one choose the woofer to mid crossover frequency (ie choose the highest possible crossover frequency, assuming a good overlap in mid and woofer driver responses)?
In case of two drivers side by side, the ctc determines the crossover, however, in the line array case how does one calculate the ctc between the line of mids and the woofer below the line ?