DOUBLE ROLL SURROUND & DRIVER TECHNOLOGY
SIGMA-15 uses the latest in Wharfedale Pro driver technology: For the LF drivers, engineers have incorporated a curvilinear, double-roll surround for smooth mid-high transitions and stability for low through to mid range frequencies. Combined with a 2.5” voice coil for improved thermal dissipation, users can expect consistent delivery at the highest of volumes throughout a performance.
The 44mm titanium diaphragm HF driver is equally robust in design – using a solid aluminum rear plate, the HF driver is strengthened for durability and heat is dissipated efficiently for demanding environments. Wharfedale Pro engineers have selected a 90° x 60° rectangular waveguide optimised for wide coverage for fixed installation purposes.