Operation; Equalisation; Arraying - Tannoy Power Dual iQ 15 User Manual

5. Operation

For optimal performance, the iQ 10/15 has been designed to operate in conjunction
with the Tannoy TDX1 & TDX2 System Controllers, and iQ18B bass unit for extended
bass performance. The TDX controllers have been factory preset to provide the
recommended eq, crossover points, and overall system balance. Please refer to the
TDX1 & TDX2 manual for operation.
If you intend using an alternative loudspeaker management system (e.g. BSS™,
KlarkTeknik™, XTA™ etc) please refer to section 12 of this manual.

6. Equalisation

Over equalisation can reduce system headroom, and introduce phase distortion
resulting in greater problems than cures. If equalisation is required then it should be
applied gently and smoothly. Violent equalisation will be detrimental to the overall
sound quality.

7. Arraying

Comb filtering is a phenomenon, which cannot be cured by equalisation. Small
alterations to loudspeaker positions can have the effect of minimising problematic
combing frequencies. Arrays should be constructed so that the individual coverage
patterns of each loudspeaker combine with minimal overlap. The design of the
iQ 10/15 cabinet greatly simplifies the creation of effective arrays, allowing seamless
wide (120 degree) horizontal coverage using two loudspeakers without the need for
tedious experimentation.
By placing the iQ 10/15 cabinets as shown in the diagram below, minimal dispersion
pattern overlap is achieved, guaranteeing an extraordinarily smooth transition.
8.
6
40°