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user manual
QLight™ series
TQ series manual
page 10
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.