Turbosound TQ-425, TQ-445, TQ-308, TQ-310, TQ-115 User Manual
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QLIGHT™ SERIES
USER MANUAL
TQ-230
TQ-308
TQ-310
TQ-315
TQ-445
TQ-425
TQ-115
Turbosound Ltd.
Star Road, Partridge Green
West Sussex RH13 8RY United Kingdom
Tel: +44 (0)1403 711447 Fax: +44 (0)1403 710155
Web: www.turbosound.com
Issue 1.2 July 2006
Copyright © 2006 Turbosound Ltd.
user manual
QLight™ series
CONTENTS
Thanks................................................................................................................................................. 4
Unpacking the QLight™ series loudspeaker..................................................................................... 4
Features ....................................................................................................................................................5
Product Range Summary.........................................................................................................................6
TQ-230................................................................................................................................................. 6
TQ-308................................................................................................................................................. 6
TQ-310................................................................................................................................................. 6
TQ-315................................................................................................................................................. 6
TQ-445................................................................................................................................................. 6
TQ-425................................................................................................................................................. 7
TQ-115................................................................................................................................................. 7
System requirements...............................................................................................................................8
Amplifier considerations.................................................................................................................... 8
Equalisation ........................................................................................................................................ 9
Dispersion........................................................................................................................................... 9
Converging Elliptical Waveguide™ ..................................................................................................10
Mounting and Fixing..............................................................................................................................11
Rigging Hardware..............................................................................................................................11
Summary of rigging options ............................................................................................................17
Permanent installations ....................................................................................................................17
Choosing the best location ...............................................................................................................18
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Maintenance...........................................................................................................................................19
TQ-230 - Removal of the drivers.......................................................................................................19
TQ-308/TQ-310/TQ-315 – Removal of the drivers ............................................................................19
TQ-445 - Removal of the 12”/1” driver.............................................................................................19
TQ-115 - Removal of the 15” driver..................................................................................................20
TQ-425 – Removal of the 15” driver(s) .............................................................................................20
TQ-445 - Removal of the midrange drive unit and horn assembly ................................................20
Appendix A.............................................................................................................................................21
Spares and accessories.....................................................................................................................21
Flying accessories..............................................................................................................................22
Appendix B: Technical specifications....................................................................................................24
Appendix B: Technical specifications....................................................................................................24
Appendix C: Warranty............................................................................................................................26
QLight™ series
Limited Warranty.............................................................................................................................. 26
Warranty Coverage........................................................................................................................... 26
Shipping............................................................................................................................................ 26
Incidental and consequential damages........................................................................................... 27
Limitation of implied warranties...................................................................................................... 27
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TQ series manual
page 3
user manual
QLight™ series
Introduction
Thanks
Thank you for choosing a QLight™ series loudspeaker product for your application. Please spare a
little time to read the contents of this manual, so that you can obtain the best possible
performance from this unit.
All TURBOSOUND products are carefully engineered for world class performance and reliability.
If you would like further information about this or any other TURBOSOUND product, please
contact us. Detailed product information is available on our web site at www.turbosound.com
We look forward to helping you in the near future.
Congratulations, you have just purchased a professional loudspeaker system from the renowned
Turbosound range, designed to give you the best in audio quality and many years of reliable,
trouble free operation. It offers superior audio quality, unsurpassed vocal projection, full technical
documentation including EASE data, and comprehensive rigging and flying hardware options.
Please read through this manual carefully before you attempt to operate the loudspeaker system.
It contains valuable information enabling you to quickly and easily set up and connect the
loudspeakers, important system and set-up checks together with positioning and mounting
instructions.
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page 4
Unpacking the QLight™ series loudspeaker
After unpacking the unit please check carefully for damage. If damage is found, please notify the
carrier concerned at once. You, the consignee, must instigate any claim. Please retain all
packaging in case of future re-shipment.
FEATURES
• Superb audio quality: carefully designed and matched loudspeaker drive units are used
to give you exceptional performance and many years of reliable, trouble free operation.
• Ease of use: QLight™ series products are exceptionally easy to set up and use with the
minimum of technical knowledge required.
• Multi-way designs: the exclusive use of cone transducers in the mid frequency bands
guarantees seamless crossover regions, as well as greater power handling, lower
distortion and less mechanical stress.
• Custom-designed drive units: a special 12”/1” co-axial driver was developed for the
TQ-445 which allows this three-way enclosure to exceed the performance of equivalentsized traditional two-way designs.
user manual
QLight™ series
• Wide dynamic range: all drive units are capable of handling large amounts of amplifier
power in order to achieve high SPL without sacrificing headroom.
• Controlled dispersion: QLight™ series mid/high frequency enclosures feature controlled
dispersion patterns which minimise room reflections and focus sound coverage directed
at audience areas without overspill.
• Aligned components: mid and high frequency components are physically aligned to
ensure perfect time arrival at the listener’s ear.
• Solid construction: all QLight™ series cabinets are built from high grade birch plywood,
rebated, screwed and glued together for maximum rigidity and durability.
• Integral rigging points: fitted as standard, enabling use with optional Turbosound flying
hardware for all types of fixed installations and mobile sound reinforcement applications.
• Compact enclosures: the overall dimensions of QLight™ series enclosures have been
kept as small as possible to enable portable use as well as fitting easily into permanent
installations.
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QLight™ series
PRODUCT RANGE SUMMARY
TQ-230
The TQ-230 is a compact passive 2-way loudspeaker with two 5” woofers designed for foreground,
background and in-fill music applications as well as a theatre under-balcony loudspeaker. Its wide
horizontal dispersion and a rotatable high frequency horn enable horizontal or vertical orientation.
Intended for portable use as well as for fixed installations, the TQ-230 is provided with rigging
points to enable use with eyebolts, wall and ceiling brackets, swivel brackets and pole brackets.
TQ-308
The TQ-308 is a compact 8” quasi-trapezoidal passive 2-way loudspeaker designed for use with
Turbosound digital controllers such as the LMS-D4 or LMS-D6. Its primary application is as a small
and unobtrusive speech and music system ideal for corporate rentals or permanent installs such
as theatres, bars and small clubs. Its rotatable 100° x 60° HF horn allows considerable flexibility of
physical orientation as well as audience coverage options. Flying and mounting options include
pole mounts, pole brackets and speaker stands; integral rigging points for use with Turbosound
and OmniMount™ wall and ceiling brackets, and swivel brackets.
TQ-310
The TQ-310 is a full range 10” quasi-trapezoidal passive 2-way loudspeaker designed for use in
mobile speech and music sound reinforcement applications with LMS-D4 or LMS-D6 digital
controllers, including use as a floor monitor. It is also ideal for use in a wide range of fixed
installations using various rigging options which include adjustable wall and ceiling brackets,
swivel brackets, flying frames and RT-767 ring type fly points.
TQ-315
A switchable bi-amp/passive 15” full range quasi-trapezoidal 2-way loudspeaker that doubles as
front-of-house and floor monitor applications when used with Turbosound LMS-D4 or LMS-D6
digital controllers. Its 80° x 55° HF horn pattern is rotatable through 90° to allow a range of
coverage options. Fixed installs are catered for by a range of rigging options, including wall and
ceiling brackets, flying frames, swivel brackets and RT-767 ring type fly points
TQ-445
The TQ-445 is a compact three-way bi-amped full range enclosure that offers unprecedented levels
of audio clarity and definition. It combines a co-axial LF/HF driver with a proprietary 6.5" midrange
cone transducer in a vented trapezoidal enclosure, providing focused directivity and considerable
vocal projection. The TQ-445 is designed for use with the LMS-D6 digital loudspeaker
management system, which provides model-specific crossover, equalisation and limiting
functions. In order to extend the effective bass frequency range of the loudspeaker by a further
octave the use of the complementary TQ-425 subwoofer is recommended.
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QLight™ series
TQ-425
The TQ-425 is a front loaded, double neodymium 15” vented subwoofer designed to combine with
QLight™ series enclosures to give a high quality, full range sound reinforcement system ideally
suited to all corporate, industrial, theatre and audio visual applications. When used with the LMSD6 digital crossover it will reproduce high sound pressure levels at bass and sub-bass frequencies.
The TQ-425 is equipped with a pole mount socket to enable QLight™ series mid-high loudspeakers
to be used at an optimum height above the subwoofer.
TQ-115
The TQ-115 is a front loaded, single neodymium 15” vented subwoofer designed to combine with
QLight™ series enclosures to give a high quality, full range sound reinforcement system ideally
suited to all corporate, industrial, theatre and audio visual applications. When used with the LMSD6 digital crossover it will reproduce high sound pressure levels at bass and sub-bass frequencies.
The TQ-115 is equipped with a pole mount socket to enable QLight™ series mid-high loudspeakers
to be used at an optimum height above the subwoofer.
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QLight™ series
SYSTEM REQUIREMENTS
QLight™ series passive loudspeaker enclosures require only one amplifier channel for correct
operation, the frequency splitting between the low frequency driver and the high frequency driver
being accomplished by the internal passive crossover network built into each enclosure. If
subwoofer enclosures are used as part of a bi-amplified system in conjunction with QLight™
series 2-way enclosures to extend low frequency response, additional amplifier channels and
external electronic crossovers will be required. The Turbosound LMS-D6 and LMS-4 digital
loudspeaker management systems are recommended for this purpose, as well as other
professional quality digital controllers.
Bi-amplified loudspeaker enclosures require the use of one amplifier channel per frequency band
for correct operation. Frequency splitting between the low frequency driver, and the mid and high
frequency section drivers is accomplished by an external electronic crossover; while frequency
splitting between the mid frequency driver and the high frequency driver in 3-way models (TQ-
445) is handled by an internal passive crossover.
Dedicated subwoofer enclosures require an additional amplifier channel when used as part of an
extended frequency system. Frequency splitting between it and a QLight™ series mid-high
enclosure is accomplished by an external crossover. Turbosound digital loudspeaker management
systems are recommended for this purpose.
Amplifier considerations
Turbosound speaker enclosures 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. Turbosound power amplifiers such as the T-45 and T25 are recommended for this purpose.
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:
The amplifier's rated r.m.s. continuous power output (20Hz – 20kHz, per
channel) should be equal to the program power handling of the
loudspeaker at its nominal impedance.
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QLight™ series
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 loudspeaker management system 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 loudspeaker management
system may be required if the amplifiers are of different gain or type. Please contact your dealer if
you require help in this area.
Equalisation
QLight™ series enclosures are designed to provide smooth and even frequency response. They do
not need excessive amounts of external equalisation to overcome the sonic deficiencies often
found in many lesser designs.
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Should an extended frequency response be required at more than moderate sound pressure
levels, the use of complementary Turbosound subwoofer enclosures is strongly recommended.
In order to compensate for the room acoustics, Qlight™ series enclosures require only minimal
equalisation. As in any system, over-equalisation introduces phase shifts, distortion and a
reduction in headroom, usually causing more problems than it cures. Under most circumstances a
1/3 or 1/2 octave graphic equaliser will generally be adequate, with the fader settings applied
smoothly and as little as possible for the required room compensation. Most rooms will have
resonances that will be excited at particular frequencies needing some cut to help tame the sound.
These problems are most pronounced at the lower frequencies where loudspeakers generally
exhibit very little directional control. If you find that the system needs a lot of boost at lower
frequencies you may need additional sub-bass units. It is good practice to use as little equalisation
as possible, aiming to cut frequencies rather than adding large amounts of boost.
Dispersion
Qlight™ series loudspeakers fall broadly into two categories of dispersion pattern: wide and
medium. While a wide horizontal coverage pattern of approximately 80° to 100° is appropriate for
a majority of small to medium venues, one of the design features of the TQ-445 is a tightly
controlled 60º horizontal by 40º vertical dispersion pattern at mid and high frequencies. This gives
many user advantages and eases placement decisions, being essentially a point and shoot system.
The more focused directivity results in greater projection capabilities, making the TQ-445 very
suitable for theatre and small auditorium applications. Remember that a 60º horizontal polar
pattern equals an angle of 30º either side of the centre line at which the sound pressure level is
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