QLIGHT
TQ-300 SERIES
USER MANUAL
TQ-310
TQ-315
Turbosound Ltd.
Star Road, Partridge Green
West Sussex RH13 8RY England
Tel: +44 (0)1403 711447 Fax: +44 (0)1403 710155
web: www.turbosound.com
Issue 1.0 Copyright 2001 Turbosound Ltd.
user manual
QLight series
CONTENTS
Introduction ................................................................................................................................................. 3
Thanks...................................................................................................................................................3
Unpacking the TQ series loudspeaker ............................................................................................... 3
Features ....................................................................................................................................................... 4
Product Range Summary........................................................................................................................... 5
TQ-310 passive two way loudspeaker ...............................................................................................5
TQ-315 bi-amped two-way loudspeaker............................................................................................ 6
Amplifier Considerations .................................................................................................................... 7
Equalisation.......................................................................................................................................... 9
Converging Elliptical Waveguide ....................................................................................................9
Mounting and Fixing ................................................................................................................................10
Rigging Hardware ..............................................................................................................................10
Permanent Installations..................................................................................................................... 11
Choosing the best location ...............................................................................................................12
Maintenance – TQ-310.............................................................................................................................. 13
Removal of the Low Frequency Driver ............................................................................................13
Removal of the HF unit......................................................................................................................13
Maintenance – TQ-315.............................................................................................................................. 14
Removal of the Low Frequency Driver ............................................................................................14
Removal of the HF unit......................................................................................................................14
Appendix A................................................................................................................................................ 15
Spares and accessories ..................................................................................................................... 15
Appendix B ................................................................................................................................................ 16
Appendix B ................................................................................................................................................ 16
Technical Specifications....................................................................................................................16
Appendix C: Warranty .............................................................................................................................. 17
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INTRODUCTION
Thanks
Thank you for choosing a QLight 300 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.
Unpacking the TQ 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.
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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.
• Converging Elliptical Waveguide: eliminates reflections in the horn throat and gives
excellent pattern control.
• Rotatable HF waveguides: high frequency waveguides are designed to accommodate 90°
rotation within the enclosure for horizontal or vertical orientation.
• Ease of use: QLight 300 series products are exceptionally easy to set up and use with the
minimum of technical knowledge required.
• Multiple applications: the non-symmetrical enclosure shape of the TQ-310 and TQ-315 allow
them to be used both in front of house loudspeaker systems as well as for floor monitor
applications.
• Wide dynamic range: all drive units are capable of handling large amounts of amplifier power
in order to achieve high SPL without losing headroom.
• Wide dispersion: QLight 300 series enclosures exhibit wide dispersion patterns which
maximise the sound coverage directed at audience areas.
• Aligned components: low and high frequency components are physically aligned in the
enclosure to ensure perfect time arrival at the listener’s ear.
• Solid construction: all QLight 300 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, as well as OmniMount and Powerdrive brackets, for all types of fixed installations
and mobile sound reinforcement applications.
• Compact enclosures: the overall dimensions of all QLight 300 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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PRODUCT RANGE SUMMARY
TQ-310 passive two way loudspeaker
The TQ-310 is a trapezoidal passive full range two-way loudspeaker enclosure designed for use in
mobile speech and music sound reinforcement applications, including use as a floor monitor, as
well as in a wide range of fixed installations.
The loudspeaker complement consists of a front loaded 10” low frequency driver and a 1” high
frequency compression driver on a 100°H x 60°V HF waveguide, matched with an internal passive
crossover network.
The TQ-310 features Turbosound’s Converging Elliptical Waveguide™ (CEW™) technology. The
comparatively short flare allows physical alignment of the HF and LF devices, and ensures that the
wavefront is shaped smoothly, eliminating reflections in the throat area while giving excellent
pattern control. Additionally this design does not suffer from the distortion typical of horns
employing diffraction edges. The waveguide can be rotated within the enclosure, making it
possible to swap the horizontal and vertical coverage patterns, for example when installing the
TQ-310 horizontally. The quasi-trapezoidal enclosure has been designed with a 15° side angle on
one side, and with a 15° and 45° angle on the other. This shape allows the loudspeaker to be used
for ether front of house or as a floor monitor.
The TQ-310 includes the provision for fitting optional RT-767 ring-type fittings, two on the top and
one on the rear, enabling it to be suspended and angled in permanent installations as well as in
mobile applications. A pole mount socket is fitted for use with 35mm poles and speaker stands.
M10 rigging points are provided on the sides for horizontal orientation. It is also compatible with
optional Turbosound hardware, as well as Omnimount and Powerdrive brackets.
The cabinet is constructed from 12mm (1/2”) birch plywood, screwed and glued together for
maximum strength and rigidity, and includes a reticulated foam and steel mesh grille. It is finished
in durable semi-matt black textured paint; TurboBlue textured paint is optionally available. A
rear panel connector plate carries two Neutrik Speakon NL4MP connectors for loop in and loop
out connections to additional enclosures.
The TQ-310 is intended for use with professional quality digital controllers providing at least five
parametric EQ points per output, and output limiting functions.
The TQ-310 is a full range loudspeaker, and used by itself will provide high quality audio for all
speech and many music reproduction applications. In order to extend the effective bass frequency
range of the loudspeaker by a further octave the use of the complementary TQ-115 or TQ-425
subwoofer is recommended.
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TQ-315 bi-amped two-way loudspeaker
The TQ-315 is a trapezoidal, switchable bi-amped/passive two-way loudspeaker enclosure,
designed for use in mobile speech and music sound reinforcement applications as well as in a
wide range of fixed installations.
The loudspeaker complement consists of a front loaded 15” low frequency driver and a 3”
diaphragm high frequency compression driver on a 80°H x 50°V HF waveguide. The TQ-315 may
be used either in bi-amped mode, or in fully passive mode by means of a rear panel switch.
The TQ-315 features Turbosound’s Converging Elliptical Waveguide (CEW). The comparatively
short flare allows physical alignment of the HF and LF devices, and ensures that the wavefront is
shaped smoothly, eliminating reflections in the throat area. Additionally this design does not
suffer from the distortion typical of horns employing diffraction edges. The waveguide can be
rotated within the enclosure, making it possible to swap the horizontal and vertical coverage
patterns, for example when installing the TQ-315 horizontally.
The quasi-trapezoidal enclosure has been designed with a 15° side angle on one side, and with a
15° and 45° angle on the other. This shape allows the loudspeaker to be used for either front of
house applications or as a floor monitor.
The TQ-315 includes the provision for fitting optional RT-767 ring-type fittings, on the top, bottom
and rear, enabling it to be rigged in permanent installations as well as in mobile applications. A
pole mount socket is fitted for use with 35mm poles and speaker stands. It is also compatible with
Omnimount 300 series and Powerdrive 120 series wall and ceiling brackets. M10 rigging
points are provided on the sides for installing in a horizontal orientation.
The cabinet is constructed from 15mm (5/8”) birch plywood, screwed and glued together for
maximum strength and rigidity, and it is finished as standard in durable semi-matt black textured
paint. TurboBlue textured paint is optionally available. An acoustically transparent, reticulated
foam and perforated steel mesh grille protects the drive units.
A rear panel connector plate carries two Neutrik Speakon NL4MP connectors for loop in and loop
out connections to additional enclosures, and a recessed toggle switch for bi-amped/passive
mode selection.
The TQ-315 is intended for use with professional quality digital controllers providing two inputs
and four outputs, with at least five parametric EQ points per output, and output limiting functions.
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System requirements for QLight 300 series products
The TQ-310 is a passive loudspeaker enclosure, meaning that it requires 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 300 series 2-way enclosures to extend low frequency response, additional amplifier
channels and external electronic crossovers will be required. The Turbosound LMS-D6 digital
loudspeaker management system is recommended for this purpose, as well as other professional
quality digital controllers.
The TQ-315 is a bi-amplified loudspeaker, meaning that each frequency band requires the use of
one amplifier channel for correct operation. Frequency splitting between the low frequency driver
and the high frequency driver is accomplished by an external electronic crossover. The
Turbosound LMS-D6 digital loudspeaker management system is recommended for this purpose,
as well as other professional quality digital controllers.
If subwoofer enclosures are used as part of a bi-amplified system in conjunction with the TQ-310
or TQ-315 to extend low frequency response, additional amplifier channels and external electronic
crossovers will be required.
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 TMC-1250,
TMC-750 and TMC-T1000 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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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.
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Equalisation
QLight 300 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.
Should an extended frequency response be required at more than moderate sound pressure
levels, the use of complementary TQ-115 or TQ-425 subwoofer enclosures is strongly
recommended.
In order to compensate for the room acoustics, QLight 300 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.
Converging Elliptical Waveguide
A design feature of the TQ-310 and TQ-315 is the Converging Elliptical Waveguide (CEW),
available in two directivity patterns: 100° x 60° for the TQ-310 and 80° x 50° for the TQ-315. This
gives many user advantages. The comparatively short flare length allows the HF and LF
components to be physically aligned in the cabinet, so ensuring coherent arrival at the listener’s
ear irrespective of distance from the loudspeaker. The elliptical format shapes the wavefront
smoothly, and eliminates reflections in the throat area. Additionally this design does not suffer
from the distortion typical of horns employing diffraction edges.
The waveguides can be removed and rotated through 90º in the cabinet, which allows the
products to be installed in either vertical or horizontal formats while retaining the required
coverage.
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MOUNTING AND FIXING
Rigging Hardware
A versatile range of mounting hardware is available that allows enclosures to be used in a variety
of ways, in either mobile applications or permanent installations.
A top hat stand type fitting is mounted in the base of both cabinets for use with 35mm diameter
loudspeaker stands with a load rating of at least 37kgs (82lbs).
An optional 35mm diameter straight pole used between these enclosures enables a minimum
footprint and ensures the correct vertical distance between cabinets.
RT-767 ring type flying points. Rigging points are
provided on the top and rear of the TQ-310 for use
with optional RT-767 rings, enabling it to be rigged
in permanent installations and for mobile
applications. Downward inclination of the enclosure
can be adjusted using the RT-767 rigging point on
the rear of the cabinet.
The TQ-310 can also be installed with M10
shoulder eyebolts in a horizontal orientation
using the M10 internal rigging points on the
side of the cabinet. In this case use the rear
RT-767 flypoint on the rear as a pull-back.
The SB-310 swivel bracket provides a means of wall
mounting the TQ-310 in either a horizontal or vertical
orientation. The swivel bracket is attached to the box
using the integral pole mount fitting at the bottom and
the M8 internal rigging point on the top of the cabinet.
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For applications requiring the TQ-310 to be installed
rapidly in a horizontal format, an additional scaffold
clamp assembly attaches to the SB-310 swivel
bracket. This method allows a virtually unlimited
range of placement angles.
The TQ-315 is fitted with rigging points on
the top, bottom and rear for use with
optional RT-767 ring-type flying points.
The rear RT-767 rigging point provides a
means of adjusting the downward angle of
the cabinet.
M10 rigging points are provided on each
side to allow the enclosure to be flown
horizontally using the rear RT-767 point as
a pull-back.
M8 rigging points are provided on the rear
of the cabinet for use with OmniMount
300 series and Powerdrive 120 series
wall and ceiling brackets.
Permanent Installations
Any installation, whether temporary or permanent, must be securely attached to the structure of
the building using chain, steel wires or web straps which are certified and load rated for the
purpose. The combined weight of the sound system, its cables and the rigging system must be
safely carried by the points at which attachment is made to the building or structure. Great care
must be taken in selecting the attachment points and methods, being absolutely sure of the load
carrying capacity of points chosen.
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NOTE: The rigging of loudspeaker systems is an extremely serious matter with potentially lethal
consequences should anything go wrong. It is of vital importance that you, or other people
rigging 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 the TQ-310 and TQ-315 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).
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MAINTENANCE – TQ-310
If any of the drive units should cease functioning and needs a replacement recone you are advised
to remove the faulty unit from the cabinet and send it to a professional recone service authorised
to recone Turbosound loudspeakers. This will ensure the continued high performance of your
QLight series product.
Removal of the Low Frequency Driver
1. Unscrew the six countersunk socket head screws at the side of the cabinet that hold the
protective grille in place. Be careful when removing the grille as it is under tension and may
spring outwards when released. Set the grille and fixing screws aside for later re-assembly.
2. Undo the four Allen head bolts holding the driver in place, and carefully pull it out and away
from the cabinet. WARNING - this unit is heavy! Disconnect the cables from the loudspeaker
terminals and completely remove the driver from the cabinet. Make a note of the driver
polarity for later reconnection.
3. To reinstate the driver, simply reverse the procedure making sure you observe the correct
polarity when reconnecting the cables back into the terminals of the drive units.
Removal of the HF unit
1. Unscrew the six countersunk socket head screws at the side of the cabinet that hold the
protective grille in place. Be careful when removing the grille as it is under tension and may
spring outwards when released. Set the grille and fixing screws aside for later re-assembly.
2. Unscrew the four Allen head bolts holding the high frequency range horn in place and
carefully pull it out and away from the cabinet. WARNING - this unit is heavy! Disconnect the
cables from the loudspeaker terminals and completely remove the driver from the cabinet.
Make a note of the driver polarity for later reconnection.
3. To reinstate the driver, simply reverse the procedure making sure you observe the correct
polarity when reconnecting the cables back into the terminals of the drive units.
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MAINTENANCE – TQ-315
Removal of the Low Frequency Driver
1. Unscrew the six countersunk socket head screws at the side of the cabinet that hold the
protective grille in place. Be careful when removing the grille as it is under tension and may
spring outwards when released. Set the grille and fixing screws aside for later re-assembly.
2. Undo the four Allen head bolts holding the driver in place, and carefully pull it out and away
from the cabinet. WARNING - this unit is heavy! Disconnect the cables from the loudspeaker
terminals and completely remove the driver from the cabinet. Make a note of the driver
polarity for later reconnection.
3. To reinstate the driver, simply reverse the procedure making sure you observe the correct
polarity when reconnecting the cables back into the terminals of the drive units.
Removal of the HF unit
1. Unscrew the six countersunk socket head screws at the side of the cabinet that hold the
protective grille in place. Be careful when removing the grille as it is under tension and may
spring outwards when released. Set the grille and fixing screws aside for later re-assembly.
2. Remove the centre portion of the top grille support bracket, which will allow the horn and
driver to come out easily. Unscrew the four Allen head bolts holding the high frequency
range horn in place and carefully pull it out and away from the cabinet. WARNING - this unit
is heavy! Disconnect the cables from the loudspeaker terminals and completely remove the
driver from the cabinet. Make a note of the driver polarity for later reconnection.
3. To reinstate the driver, simply reverse the procedure making sure you observe the correct
polarity when reconnecting the cables back into the terminals of the drive units. Replace the
top grille support bracket before re-fitting the grille.
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APPENDIX A
Spares and accessories
CD-110 1” (25mm) HF compression driver for TQ-310
RD-110 Replacement diaphragm for CD-110
CD-208 3” diaphragm (76mm) HF compression driver for TQ-315
RD-208 Replacement diaphragm for CD-208
LS-1018 10” (254mm) LF loudspeaker for TQ-310
RC-1018 Recone kit for LS-1018
LS-1520 15” (381mm) LF loudspeaker for TQ-315
RC-1520 Recone kit for LS-1520
PX-310 Passive crossover network for TQ-310
PX-315 Passive crossover network for TQ-315
MG-310 Replacement foam / metal grille for TQ-310
MG-315 Replacement foam / metal grille for TQ-315
Flying accessories
RT-767 Ring-type flying points (set of three)
CB-100 Ceiling bracket
WB-100 Wall bracket
SB-310 Swivel bracket
SC-440 Scaffold clamp
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APPENDIX B
Technical Specifications
TQ-310 TQ-315
Dimensions 525mm x 319mm x 277mm
(20.7” x 12.5” x 10.9”)
691mm x 443mm x 381mm
(27.2” x 17.4” x 15”)
Net weight 21kgs (46.2lbs) 35.5kgs (78.1lbs)
Components 1 x 10” (254mm) LF driver
1 x 1” (25mm) HF compression
driver
1 x 15” (381mm) LF driver
1 x 3” diaphragm (35mm) HF
compression driver
Frequency
response
65Hz – 20kHz ±4dB (with digital
controller)
55Hz – 20kHz ±4dB (with digital
controller)
Nominal
dispersion
100°H x 60°V @-6dB points 80°H x 50°V @-6dB points
Sensitivity 96dB, 1 watt @ 1 metre 99dB, 1 watt @ 1 metre
Power handling 350 watts r.m.s., 700 watts
program, 875 watts peak
LF: 600 watts r.m.s., 1200 watts
program, 1500 watts peak
HF: 80 watts r.m.s., 160 watts
program, 200 watts peak
Maximum SPL 124dB continuous, 130dB peak 130dB continuous, 136dB peak
Construction 12mm (1/2”) birch plywood
throughout; rebated, screwed and
glued. Finished in black semi-matt
textured paint.
15mm (5/8”) birch plywood
throughout; rebated, screwed and
glued. Finished in black semi-matt
textured paint.
Grille Reticulated foam on expanded steel
mesh
Reticulated foam on expanded steel
mesh
Connectors (2) Neutrik Speakon NL4MP
wired pin 1+: +ve, pin 1-: –ve
(2) x Neutrik Speakon NL4MP, wired
pin1+:+ve, pin 1-: -ve. Active: pin1+:
LF+; pin 1-: LF-; pin2+: HF+, pin2-: HF-
Options TurboBlue semi-matt textured
paint
TurboBlue semi-matt textured paint
Due to continuing product improvement the above specifications are subject to change.
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APPENDIX C: WARRANTY
Limited Warranty
This Turbosound loudspeaker product is warranted to the original end-user purchaser and all
subsequent owners for a period of one (1) year for electronics assemblies and two (2) years for
loudspeakers from the original date of purchase.
Warranty Coverage
Warranty coverage includes defects in materials and workmanship. It does not include:
• damage caused by accident, misuse, abuse, neglect or modification by any person other than
an authorised Turbosound representative,
• damage caused by failure to operate the product in accordance with the instructions
contained in the user manual,
• damage occurring during shipment in transit,
• claims based on any misrepresentation by the seller,
• products which do not have the original components as specified in the product engineering
information,
• products on which the serial number has been removed or defaced.
Shipping
Should any fault develop with a component of your Turbosound system, please return the
product, freight pre-paid, in its original packing carton, along with proof of purchase such as the
original bill of sale or receipted invoice, and a description of the suspected fault to Turbosound
Ltd. (Att: Customer Service), Star Road, Partridge Green, West Sussex RH13 8RY, England, or your
local authorised Turbosound representative. The product serial number must be quoted in all
correspondence relating to the claim. Insurance is recommended, as Turbosound or its
representatives are not liable for loss or damage in transit. Turbosound will pay for return freight
costs should repairs be covered under warranty.
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Incidental and consequential damages
Turbosound's liability is limited to the repair or replacement, at our option, of any defective
product, and shall not be liable for any incidental and consequential damages including, without
limitation, injury to persons or property or loss of use.
Limitation of implied warranties
All implied warranties, including warranties of merchantability and fitness for a particular purpose,
are limited in duration to the length of this warranty.
This warranty is in addition to, and in no way detracts from, your statutory rights as a consumer.
No other warranty is expressed or implied.
Please record your purchase information below for future reference:
Dealer Name ________________________________________________________________
Dealer Address ________________________________________________________________
________________________________________________________________
________________________________________________________________
Post / Zip Code ________________________________________________________________
Dealer telephone / fax ________________________________________________________________
Invoice number ________________________________________________________________
Date of purchase ________________________________________________________________
Unit serial number ________________________________________________________________
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Turbosound Ltd.
Star Road, Partridge Green
West Sussex RH13 8RY England
Tel: +44 (0)1403 711447 Fax: +44 (0)1403 710155
web: www.turbosound.com
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