Turbosound TQ-310, TQ-230, TQ-425, TQ-445, TQ-308, TQ-115, TQ-315 Converging Elliptical Waveguide

user manual

QLight™ series

6dB down with respect to centre, (averaged over the whole frequency range of the loudspeaker).

Converging Elliptical Waveguide™

A design feature of the TQ-308, TQ-310 and TQ-315 is the Converging Elliptical Waveguide™ (CEW™), available in two directivity patterns: 100° x 60° and 80° x 50°. This gives many user advantages. The comparatively short flare length allows the HF and LF components to be physically aligned in the cabinet, so ensuring coherent arrival at the listener’s ear irrespective of distance from the loudspeaker. The elliptical format shapes the wavefront smoothly, and eliminates reflections in the throat area. Additionally this design does not suffer from the distortion typical of horns employing diffraction edges.

The waveguides can be removed and rotated through 90º in the cabinet, which allows the products to be installed in either vertical or horizontal formats while retaining the required coverage.

To rotate the horn, first remove the grille by undoing the countersunk Allen head screws which retain the grille from the sides of the cabinets. Remove the four screws holding the horn flange in place. Lift the horn and driver assembly out, rotate it through 90º and replace the fixing screws. Replace the grille.

TQ series manual page 10