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user manual
QLight™ series
TQ series manual
page 18
the system, are suitably qualified to do so and have a full understanding of all the factors involved
with safety as a number one priority. Turbosound accepts no responsibility for any accident,
damage or failure of any rigged system. This rigging information is specifically related to the
requirements of Qlight™ series enclosures only. For more detailed information on the whole topic
of rigging various handbooks are available. If you are in any doubt contact your Turbosound
dealer who will be able to refer you to an experienced rigging company.
Choosing the best location
When using any QLight™ system, certain room parameters will affect the resultant sound quality
and coverage. For example, any boundary like a wall or floor will lift certain frequencies. If you are
placing the unit in a corner then a lift at the bass end is to be expected and it may sound rather
boomy. This can be compensated for moving the speaker or cutting low frequencies with a
graphic equaliser.
When speakers are flown in free space then boundary effects are minimised. The result is a
smooth frequency response without any boost at odd frequencies, but the bass end may appear
subjectively light. In this case increase the sub-bass level to bring the low end up.
The relationship between sound pressure level and distance is an “inverse square law” so
remember that every time the distance from the sound source is doubled the sound level
decreases by 6dB. For every 3dB increase of speaker output you need a doubling of input power
and you can work out the wattage input needed to give the required SPL levels at various
distances from the loudspeaker(s).