Turbosound QLIGHT TQ-440, User Manual, Page: 6 / 21

user manual
QLight
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series
TQ-440 manual
page 6
System Requirements
The TQ-440 is a bi-amped loudspeaker system. It requires two independent amplifier channels:
one channel to power the low frequency driver (LF) plus another channel to power the midrange
(MF) and high frequency (HF) together. A frequency dividing network is also required to split the
signal and feed it to the appropriate driver section; the LMS-D6 digital loudspeaker management
system or the LMS-A6 loudspeaker management system is recommended for this purpose.
Amplifier considerations
The TQ-440 should be driven by high quality power amplifiers designed for true professional use.
Such amplifiers will have balanced inputs, DC and RF fault protection, and well designed cooling
systems for reliability.
The program power listed in the loudspeaker’s technical specification is the best guide to the size
of amplifier required for general purpose applications. The amplifier should therefore be capable
of delivering long term broadband power equal to the loudspeaker’s program power rating at the
loudspeaker’s stated nominal impedance. This approach allows sufficient headroom to generate
good dynamic range.
RECOMMENDED AMPLIFIER POWER RATINGS: RECOMMENDED AMPLIFIER POWER RATINGS: RECOMMENDED AMPLIFIER POWER RATINGS: RECOMMENDED AMPLIFIER POWER RATINGS:
The amplifier's rated r.m.s. continuous power output (20Hz – 20kHz, per
channel) should be equal to the recommended program power handling of
the loudspeaker at its nominal impedance.
In general, the more powerful the amplifier the better it will sound, provided that it is not driven
into sustained clipping. It should be understood that overdriving an insufficiently powered
amplifier is more likely to cause loudspeaker damage – the total energy in a heavily clipped signal
is far higher than in an unclipped signal – than operating a more powerful amplifier within its
ratings.
One controller can be used to feed several amplifiers as long as all the amplifiers are the same (or
have the same gain ratings). More than one controller may be required if the amplifiers are of
different gain or type. Please contact your dealer if you require help in this area.