User
Manual
MODEL: QM3/QM4
Contents
Safety Precautions ......................1
General Description ......................3
Connection Panel .......................4
System Connections .....................5
QM3 Specifications ......................6
QM4 Specifications ......................7
User Manual Q Motion Series
QM3/QM4
QM3/QM4
User Manual
User Manual
Q Motion Series
QM3/QM4
1
Safety Precautions
• Be sure to read the instructions in this section carefully before use.
• Make sure you observe the instructions in this manual as the conventions of safety symbols and
messages are very important.
• We also recommend you keep this instruction manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols described below are used in this manual to prevent bodily injury and property
damage, which could be a result of mishandling. Before operating your product, read this manual
first and understand the safety symbols and messages so you are thoroughly aware of any risks.
Indicates a potentially hazardous
situation, which, if mishandled, could
result in death or serious personal injury.
WARNING
Do not attempt to clean the
painted enclosure with solvents
or petrochemical based cleaners.
Touching up scratches can be
done with polyester paint.
The QM3 and QM4 are not
designed for flying applications.
For wall mounting with the 36mm
top hat fitting, it is essential to
follow the local approved safety
standards and installation by
qualified personnel.
Installation that allows direct
precipitation is not advised and
the installation method must
prevent liquids from entering the
cabinet.
Do not place sources of heat
on the speaker cabinet such as
lighting equipment or smoke
machines, and where possible
keep out of direct sunlight.
Do not stack the speaker cabinet
in a manner that could cause
injury should a cabinet become
dislodged.
CAUTION
Before connecting or disconnecting
any signals (including mains
power), be sure to set the master
level control counter-clockwise to
the off position. This will prevent
unexpected and possibly damaging
noises from the system.
QM3/QM4
User Manual
User Manual
Q Motion Series
QM3/QM4
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WARNING
When the Unit is in Use
• Do not place objects on the unit as they
can dislodge and cause personal injury
and/or property damage.
• Make sure the volume control is set
to minimum position before power is
switched on. Loud noises produced when
power is switched on can impair hearing.
• Do not operate the unit for an extended
period of time with the sound distorting.
This is an indication of a malfunction or
incorrect gain structure. Turn down the
sound source and check for the source of
distortion. Ignoring this can cause damage
to the speaker system and under some
circumstances can cause excessive heat
to generate and result in a fire.
• Contact your dealer for cleaning
procedure. If dust is allowed to
accumulate inside the unit over a long
period of time, a fire or damage to the unit
may result.
• Switch off the power, and unplug the
power supply plug from the AC outlet for
safety purposes when cleaning or leaving
the unit unused for many days.
When Installing the Unit
• Never plug in, or remove the power supply
plug with wet hands, as doing so may
cause electric shock.
• When unplugging the power supply cord,
be sure to grasp the power supply plug;
never pull on the cord itself. Operating the
unit with a damaged power supply cord
may cause a fire or electric shock.
• When moving the unit, be sure to remove
all signal cabling (including mains power).
Moving the unit with cabling connected
may cause damage to the unit, resulting in
fire or electric shock.
• Do not block the free flow of air around the
unit. Doing so may cause heat to build up
inside the unit and result in fire or damage
to components.
• Avoid installing the unit into areas of:
humid, dusty, direct sunlight, steam,
smoke, or near heating systems. Doing so
may result in fire or electric shock.
QM3/QM4
User Manual
User Manual
Q Motion Series
QM3/QM4
3
General Description
The QM3/QM4 powered speakers are a two
way active bass reflex design suitable for
mobile and installation use.
The amplifier power is supplied by Quest
Engineering’s new “Hybridtec” digital class D
and analogue class A/B amplifier system. The
Hybridtec amplifier is controlled by an internal
analogue system. Simplified controls on the
rear of the QM3/QM4 make operation easy.
The QM3/QM4 features an XLR input, XLR
link output, gain control, bass/treble cut and
boost, and input mic/line sensitivity.
Individually colored LED indicators show mic/
line settings and signal/peak presence.
The QM3/QM4 is a multi-purpose loudspeaker
that can be used as a front of house system
or as a powered foldback monitor. The cut
and boost rotary EQ controls can be adjusted
to make basic alterations to the sound.
Though maximum boost should be avoided at
high power levels.
The Hybridtec design saves weight, lowers
potential heat generation and also improves
sonic performance. A limiter monitors RMS
power for excessive input level.
Limiters and compressors are not a substitute
for sensible operation. The system will
sound its best when mixers and other signal
processors are not driven into distortion.
The design characteristics make the QM3
and QM4 suitable for both full range use or
as the Mid-High component of a multi way
system with bass enhancement. Coupled with
a Quest Engineering compact subwoofer,
the QM3 and QM4 can act as part of a point
source multi way system for full range sound
at medium to high sound pressure level.
Installation
Temporary installation is possible with the
addition of a 35-36 mm speaker stand.
Accessories
An optional transit carry bag is available
for the QM3/QM4. Made from rugged black
canvas to protect your investment.
Solid Build Construction
The QM3/QM4 is well suited to all
professional applications. The high grade
lightweight birch cabinet is specially
engineered to withstand demanding use
and the heavy gauge power-coated steel
grill ensures the driver and horn are always
protected.
Hybridtec Amplifier Technology
QM3/QM4
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User Manual
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QM3/QM4
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Connection Panel
1 Input Volume Control
2 LED Peak Indicator
3 Bass Cut / Boost
4 Treble Cut / Boost
5 Input Selector LED Indicators
6 Input Sensitivity Mic / Line Switch
7 Input XLR / Phono Female
8 XLR Male Line Out / Thru
9 100V-240V Power Input
10 Power On / Off Switch.
10
2
4
8
1
3
7
5
6
EQ Settings
It is advised not to boost Bass or Treble
controls to maximum at more than
medium power levels. Bass boost will
cause the limiter to activate at a lower
input level to prevent overloading the
bass amplifier or woofer.
System Limiter
When driven to full power the system
limiter will engage to prevent overload
and amplifier clipping. Continuing to
drive the input to higher levels will cause
more excessive limiting and loss of high
frequency performance and clarity.
This effect is noticeable and lowering
the input level will restore clarity and
allow the system to achieve its maximum
potential sound pressure level.
9
Use only same fuse for replacement.
Please consult your Quest Engineering
service agent.
CAUTION
QM3/QM4
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System Connections
As a stand-alone system
It is good audio practice to set the input
volume of your powered speakers to a high
level and control the overall sound level from
your mixer.
Be careful to make sure your input switch is
set to Line and not MIC.
As part of a multi way
powered system
(If your powered subwoofer has an electronic
crossover output).
Connecting the QM3/QM4 through the output
of the subwoofer crossover allows for the low
bass to be directed to the subwoofer and the
upper bass/hi frequencies to be reproduced
by the QM3/QM4. This approach takes the
low frequency load off the QM3/QM4 and
makes more power available for mid/high
output.
10
1
1 2
5
10
1
5
OUTPUT
INPUT
INPUT
10
1
5
10
1
5
1 2
* Quest Engineering reserves the right to make changes in specifications, or products without prior notice.
QM3/QM4
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QM3 Specifications
Technical Parameters
Max SPL *calculated 125 dBSPL
Sensitivity *5-band average 98 dBSPL
Frequency Response 60Hz – 20kHz
Amplifier Power RMS 380W Peak 470W
Transducers HF
34mm Compression
Driver
LF 12” High Power Woofer
Directivity
*H x V 85° x 75°
Connections XLR+¼” In, XLR Out
Dimensions
*H x W x D 620 x 380 x 347 mm
Net Weight 16.5 kg
Shipping Weight 20 kg
100
110
120
dBSPL
Frequency - Hz
90
80
70
60
50
100 1k 10k20 50 200 500 2k 5k 20k
* Quest Engineering reserves the right to make changes in specifications, or products without prior notice.
QM3/QM4
User Manual
User Manual
Q Motion Series
QM3/QM4
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QM4 Specifications
Technical Parameters
Max SPL *calculated 127 dBSPL
Sensitivity *5-band average 99 dBSPL
Frequency Response 60Hz – 20kHz
Amplifier Power RMS 380W Peak 470W
Transducers HF
34mm Compression
Driver
LF 15” High Power Woofer
Directivity
*H x V 85° x 75°
Connections XLR+¼” In, XLR Out
Dimensions
*H x W x D 705 x 462 x 440 mm
Net Weight 21.5 kg
Shipping Weight 26 kg
100
110
120
dBSPL
Frequency - Hz
90
80
70
60
50
100 1k 10k20 50 200 500 2k 5k 20k
NOTES
www.questaudio.net
Register Your Product
Thank you for choosing Quest. Please take the
time to complete your product registration card
which is included with the packaging.
Registering your Quest Engineering product will:
• CONFIRM YOUR WARRANTY
• REGISTER YOUR PRODUCT
• PROTECT YOUR NEW PRODUCT
REGISTER ONLINE:
www.questaudio.net/registration
For spare parts and service, contact your local
authorised Quest Dealer.
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