AudioToolsLite
With this application you can make EndFire subwoofer arrangements. Cardioid Arrays, Stack, Digital Arc, Line Sub, Cardioid Line Sub and Frontfills "Pro version only." A good number of calculators are available: Time / Distance, Wavelength, Time / Angle, Sum of SPL, OHM Law, FactorQ / W and V-dBu-dBV