TOA Electronics I6 AW user manual Power Selection i6T AW, Equalisation, Dimensions

6. Power Selection (i6T AW)

Determine the maximum power in watts needed at each speaker location. The i6 AW transformer can be tapped at 30w, 15w, 7.5w, & 3.75w via the rotary switch located on the metal plate at rear of the loudspeaker. When the relevant tappings have been selected add the individual wattages required at all speakers and select an amplifier with a rating equal to or exceeding the total wattage required. All of the transformer primaries should be connected in parallel to the output of this amplifier. If for example, you select the 7.5-watt transformer tap, it means that at full rated amplifier output the speaker will receive the full 7.5 watts. If the amplifier gain is reduced each speaker will receive a proportional amount of power, maintaining the overall system balance.

When calculating amplifier wattage requirements for a system, it is recommended that a generous wattage safety margin (3dB of headroom) be left so that the system does not have to operate continuously at its full rated output

7. Equalisation

The i6AW loudspeaker is designed to need no equalisation or correction to overcome system limitations. As a result, it will only need equalisation to compensate for difficult acoustic environments.

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. The i6AW loudspeaker is a point source, phase coherent design and violent equalisation will be detrimental to the overall sound quality.

8. Dimensions