Page 1
User
Manual
MODEL: QM 700
Page 2
Contents
Safety Precautions ............................1
When Installing the Unit .............................................. 2
When the Unit is in Use .............................................. 2
General Description ............................3
Fold-back Monitors as Mirrored Pairs .................................. 3
QM Range Accessories .............................................. 3
Functional Design ................................................... 3
Getting The Best From Your QM700 ...............4
Connections ....................................................... 4
Suitable Amplification ............................................... 4
Amplifier Configuration for Front of House or Stage Monitor Use ............. 4
Speaker Placement for Maximum Stage Monitor Performance. . . . . . . . . . . . . . . 5
Speaker cables ..................................................... 6
Speaker Placement as a Single Box or in Arrays .......................... 6
Flying the QM700. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rotating the Horn Flare .............................................. 7
Foldback HF coverage ............................................... 7
QM700 Wave Guide Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
QM700 Specifications ..........................9
Technical Parameters ................................................ 9
QM700 Reference Diagram ......................10
Tech Tips and Troubleshooting ...................11
Mixer Basics ....................................................... 11
Input Gain Settings .................................................. 11
Buzzes and Noises in the Sound System? ............................... 12
User Manual Q Motion Series
QM700
Page 3
QM700
User Manual
User Manual
Q Motion Series
QM700
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 result from 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
Page 4
QM700
User Manual
User Manual Q Motion Series
QM700
2
WARNING
When the Unit is in Use
• Turn down the amplifier before switching
on the amplifier. If there is no sound,
check the speaker connections. Speakon
connectors must be locked in place.
• Should any of the following irregularities
be found during use, immediately switch
off the amplifier power, disconnect the
power supply plug from the AC outlet and
contact your nearest Quest dealer:
• If you detect smoke or a strange smell
coming from the unit,
• If the unit falls and the unit case is
damaged,
• If it is malfunctioning (no HF or low
frequency output).
Make no further attempt to operate the unit if
it is found to be in any of the above conditions
as this may cause fire or electric shock.
When Installing the Unit
• Do not expose the unit to rain or an
environment where it may be exposed to
water or other liquids, as doing so may
result in damage to the bass driver or
corrosion of the steel protective grill.
• Do not cut, kink, otherwise damage
nor modify the speaker cable. Also use
speaker cable of at least 1.5mm core
diameter. In addition, avoid locating the
speaker cables close to heaters, high
traffic areas or locations where the cables
can be damaged.
• Avoid installing or mounting speaker
boxes in unstable locations and when
flying, use the hardware designed for the
speaker box and fix securely to a solid
wall. Failing to do so may result in the
unit falling, causing personal injury and/or
property damage.
• Be sure to ground to the safety ground
(earth) terminal to avoid electric shock.
Never ground to a gas pipe as a
catastrophic disaster may result.
• Never hang a speaker box from only
one rigging point. Use multiple points
and attach a safety line to a point strong
enough to take the weight of the speaker
box.
Page 5
QM700
User Manual
User Manual
Q Motion Series
QM700
3
General Description
The QM700 is a passive two way bass
reflex design speaker suitable for mobile or
installation use. The design characteristics of
the QM700 make it suitable suitable as a high
powered fold-back monitor, full range front of
house or as the high-mid component of a multi
way system with sub-bass enhancement.
Fold-back Monitors as Mirrored Pairs
The QM700 is available as mirrored pairs which
is a great aid for minimising interferences
effect when the QM700 is used as a large stage
monitor. (See section on Fold-back monitor
technique).
The new generation high frequency transducer
is matched to a rotatable asymmetrical wave
guide that can be rotated through 270 degrees
for horizontal, vertical or fold-back monitor
installation.
The asymmetrical coverage allows the horn to
achieve both long throw performance and wide
angle close coverage without “hot zones” or
adding to unnecessary room reflections that
can degrade vocal intelligibility. The unit can be
used in a stand alone configuration or as part
of a system coupled with any Quest sub-bass
system. When used in conjunction with these
devices, the QM700 will form part of a high
performance multi way audio system.
Installation
Temporary installation is possible with the
35mm floor stand mounting in the base of
the enclosure. Fold-back installation can give
extra uniform stage coverage by rotating the
horn flare to the “fold-back” position.
Five M10 thread inserts are located on
the top, sides and one under the QM700
enclosure. These are intended to be used with
the WB700 wall bracket.
QM Range Accessories
Two optional accessories are available for the
QM700:
• WB 700 Wall bracket kit
• QB 700 Protective transit cover
Functional Design
The QM700 casing features an asymmetrical
horizontal angle along one side which makes
it suitable for use as a stage\foldback wedge
when laid flat.
Solid Build Construction
The QM700 is well suited to all professional
applications. The casing is specially
formulated to withstand demanding use
and the heavy gauge power-coated steel
grill ensures the driver and horn are always
protected.
WARNING
Flying the box from one insert must not be attempted!
Improper installation may result in damage, injury or death.
Page 6
QM700
User Manual
User Manual Q Motion Series
QM700
4
Connections
Two Neutrik™ Speakon model NL-4
connectors are mounted in a removable panel
on the rear surface of the box.
The connector input is wired pin 1+ and pin 1-.
Pin 2 is not connected.
Take care when inserting the Speakon
connector twisting the connector until it
locks into place. Reverse the procedure to
disconnect.
Getting The Best From Your QM700
Suitable Amplification
The QM700 is an 8 ohm enclosure and can
be connected in multiple parallel connections
to an amplifier channel that can operate at
speaker impedances of 4 ohms.
The QM700 is a mid power level high
efficiency system, so ultra high power is not
necessary to obtain high sound pressure
levels. The recommended power range per
amplifier channel is 550 - 850 watts RMS into
an 8Ω load or up to 1,600W RMS into a 4 ohm
load. A suitable partner to the QM700 is the
Quest QA3004 or QA4004 amplifiers. Setting
the QA amplifier’s high pass filter at 35Hz is
recommended for full range applications. If
you are intending to add sub bass speakers,
the high pass filter can be set to 80Hz.
OUTPUT ASSIGNMENT
PIN 1+ :
PIN 1- :
SIGN A L
GROUND
LINK A
LINK B
INPUT A
INPU T B
Push To Reset
~
220 240V 10A 5 0/60Hz
OUTPUT A
OUTPUT B
BR
IDGE
PIN1:
PIN2:
PIN3:
SIGNAL G N
D
SIG N AL +
SIGNA L -
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OFF 80Hz 110Hz
LOW PASS -A
26dB
32dB1.4V
GAIN
STEREO PARALLELBRIDGE
MODE
OFF 35Hz 80Hz
HIGH PASS -B
OFF 80Hz 110Hz
LOW PASS -B
ON OFF
LIMITER
LIFT GROUND
GROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALIA
MODEL:
OFF 35Hz 80Hz
HIGH PASS -A
OFF 35Hz 80Hz
HIGH PASS -A
10
1
1 2
5
10
1
5
Speaker 1 Speaker 2
Reducing low frequency output will make more
amplifier power available for clean vocal reproduction
Recommended minimum power range per amplifier channel is 1,400 watts RMS into a 4Ω load. Higher power per
channel is possible if the power is undistorted. An ideal partner for the QM 700 is the QA 3004 or QA 4004 amplifier.
Setting the QA amplifier’s high pass filter at 80Hz is recommended for clean high SPL vocal applications.
Amplifier Configuration for Front of House or Stage Monitor Use
Page 7
QM700
User Manual
User Manual
Q Motion Series
QM700
5
The QM 700 is primarily intended for use as
a stage monitor in mirrored pairs or as single
speaker boxes.
Why Mirrored Pairs?
When two standard design fold-back monitors
are placed in close proximity to each other and
are reproducing the same signal, “interference
effect” between the speaker transducers will
contribute to uneven frequency response. This
is called “comb filtering” and is impossible to
correct with EQ alone. The QM 700 is designed
to minimize this potential problem.
Speaker Placement for Maximum Stage Monitor Performance
Two conventional monitors with top mounted HF
horns. Regardless of where they are located, the
HF horns (as pictured in Fig 1.) spill across each
other and this causes “tangential interference”
as the mid-high frequency waves intersect and
create both peaks and cancellations which will
radically change the frequency response in
different areas of the sound field.
This is the source “hot zones” found as you
move a microphone in an arc in front of a pair of
monitors (See Fig 1).
The “mirror” design allows a monitor engineer to
locate the HF horns at a greater distance apart
and lower the level of interference between the
boxes (See Fig 2).
By moving the QM 700 monitors, the frequency
response of the monitor pair can be partially
“flattened” and “hot zones” removed without
losing gain with excessive EQ.
This is a common configuration for a guitar
player/vocalist and leaves space for an effects
board and boom microphone stand.
Fig 1: Conventional monitors
Fig 2
Fig 3
Page 8
QM700
User Manual
User Manual Q Motion Series
QM700
6
Speaker cables
Speaker cable needs to be as heavy gauge
as conveniently possible for low-loss results.
Light gauge cable (below 1.5mm) will create
extra resistance and waste amplifier power.
This particularly applies to long speaker
runs. The amplifier’s damping factor statistic
(“punch” for the non technical) is greatly
diminished, so keep your speaker cables
short and as heavy gauge as practical.
Speaker Placement as a Single Box
or in Arrays
The QM700 is intended for use as a single
speaker system or as part of a multiple
speaker setup with or without sub bass
reinforcement. It can also be installed in small
arrays of up to three boxes per array for very
wide coverage applications.
When a group of point source speaker boxes
are placed together, it is possible to have
“interference effect” between some of the
boxes causing uneven frequency response.
This can be particularly noticeable in the
mid-high frequency area.
If you intend to set up the QM700 as part of a
multiple box array, see the section ‘Flying the
QM700’.
When positioning the speaker system on a
stage, make sure the HF horn at the top of
the speaker box is above the heads of the
audience. At full power the output of the
QM700 is very high and hearing damage can
result from short to medium term exposure.
For best results when the QM700 is used as a
front of house speaker, consider angling the
box forward slightly to direct the HF horn to
cover the audience area. The HF horn should
be aimed away from the ceiling and focused
on the intended area of coverage. This will
minimize HF reflections, lower the reverberant
field in the room and give better intelligibility.
Ideal QM700 Flown Configuration
Page 9
QM700
User Manual
User Manual
Q Motion Series
QM700
7
Flying the QM700
Before suspending any speaker system
always inspect all components (enclosure,
rigging frames, track fittings, etc.) for cracks,
deformations, corrosion, missing, loose or
damaged parts that could reduce strength
and safety of the array. Do not suspend the
speaker system until the correct preparation
of the installation site has been taken to avoid
health risks during and after the completion
of the installation. A licensed Professional
Engineer must approve the placement and
method of attachment to the structure prior to
the installation of any overhead object.
Rotating the Horn Flare
The asymmetrical horn flare can be rotated
through three separate planes of dispersion
depending on the speaker box requirement
and installation environment. The planes are
vertical installation, horizontal installation and
foldback monitor.
Good coverage of audiences often requires
wide dispersion at the base of the horn flare
to cover close listeners and a focused narrow
dispersion at the top of the flare to beam to
the back of the room.
The QM700 horizontal horn covers both
“short-throw” and “long-throw” requirements
in a single system. For the majority of
installations (where the box is installed
vertically), the asymmetrical horn should be
used as supplied and will not need to be
rotated.
For horizontal installation rotate 90 degrees
so the arrow is pointing at the floor side so
as to have the “beaming” facility at the top of
the horn.
Foldback HF coverage
For stage foldback monitors the coverage
must be wide when performers are close
to the wedge and beam down the stage
to minimize the spill off the stage that may
interfere with the main PA.
For floor monitor use the horn must be
rotated with its “wide” dispersion (arrow
indicator), side directed towards the top of
the horizontal floor cabinet.
When removing and reinstalling the front grill
to rotate the horn, ensure the nuts are not
over tightened as this may make them difficult
to remove in future or cause damage to the
grill retainer thread.
WARNING
Ensure the box is securely located. If any doubt about the
physical stability, tie the box down with ratchet straps to a
secure base.
Page 10
QM700
User Manual
User Manual Q Motion Series
QM700
8
QM700 Horiztonal Configuration (front)
QM700 Horizontal Configuration (side)
QM700 FOH Configuration (side)
QM700 Wave Guide Examples
QM700 FOH Configuration (front)
QM700 Foldback Configuration (side)QM700 Foldback Configuration (front)
45˚
60˚
+15˚
-45˚
60˚
45˚
+15˚
-4
5˚
45˚
60˚
+
1
5
˚
-4
5˚
Page 11
QM700
User Manual
User Manual
Q Motion Series
QM700
9
QM700 Specifications
Technical Parameters
Power Handling 700W program ; 1400W peak
Frequency Response 50-16kHz
Sensitivity 98dB @ 1kHz
Maximum SPL @ 1m 130dB
Impedance 8 ohms
Connections and Wiring 2 x Speakon NL4 - 1+/1- (2+/2- through)
Woofer 15” High Power Woofer
Tweeter 1.4” Ferrite Compression Driver
Directivity Asymmetric +15/-45 ; 30/45 horizontal
Dimensions 725 x 432 x 369.5 mm
Weight 28 kg Net
QM700 - Frequency Response - 2.83V/1m
Frequency (Hz)
100 1k 10k
80
60
20 50 200 500 2k 5k 20k
90
70
50
20
Page 12
QM700
User Manual
User Manual Q Motion Series
QM700
10
QM700 Reference Diagram
No. Description Spare Part
1 Complete Grill (with Acoustic Foam) HGQM700
2 15” Woofer (3” voice-coil, 500Wrms, 8ohms) T15005
2bis Recone kit to suit 15” woofer RT15005
3 Compression Driver 1.4” exit (3”voice-coil, 80Wrms, 8ohms) T2003
3bis Compression driver recone (diaphragm) RT2003
4 Asymmetric horn flares - GT12 HWG110
5 Passive filter network (complete) - X-over AXQM700
6 Back connection panel HCPQM700
7 Internal metal brace HIBQM700
8 Top hat plate HTHP1
9 Rotating Q badge (25mm) HQB25
10 Rubber skids (medium) HSK137
11 Rubber skids - angled HSK45D
1
2
34
5
6
7
8
9
1011
3bis
2bis
Page 13
QM700
User Manual
User Manual
Q Motion Series
QM700
11
You can never know too much when it comes
to the variety of technical issues that can
appear at your gig. Here are a few tips.
Mixer Basics
Whether you are starting with one microphone
two turntables and an iPod, or a 48 channels
of live band, the audio principles are the
same. If you introduce distortion to any part of
the audio chain, it will still be there at the end
of the line (your speakers).
A small audio system may only be a sound
source, a mixer and a amplifier/speaker
combination. A slightly bigger one may have
added to the chain, DI boxes, digital effects,
compressors, equalizers and electronic
cross-overs. Any of these units that have
excessive input level will pass on distortion
to all the following equipment in the chain. It
follows that all the individual units must have
their input and output levels operating within
their designed operational range.
A mixer output meter that is showing + 9
dB at the end of the “red bars”, only to be
pushing a compressor/limiter to limit 10dB is
only going to sound bad, not get louder. When
you look at a Vu meter on a mixer (Vu means
voltage units), you will see a row of numbers
with a minus (-) sigh in front of them leading
to a “0dB” on the right hand side.
When the gain structure chain is set correctly,
“0” means you have the system full power
(not including any “head room” the system
may have). After “0” db, you are reaching
the limits of the system’s capacity to deliver
undistorted sound. How much distortion
Tech Tips and Troubleshooting
will depend on a number of factors, but it is
enough to say that by the time you get to the
end of the red, your mixer is now clipping and
sooner or later you are likely to damage the
loudspeakers.
Input Gain Settings
Channel input levels must be set to prevent
a mixer channel overloading during the
performance. Too high a setting will introduce
distortion at the start of the signal chain.
10
1
1 2
5
10
1
5
100
5
CLIP/LIMIT
10
1
1 2
5
10
1
5
100
5
CLIP/LIMIT
10
1
1 2
5
10
1
5
100
5
CLIP/LIMIT
MIXER
MIXER
MIXER
AMP
AMP
AMP
VU
1
10
30
-
+
2
3
0
3
Page 14
QM700
User Manual
User Manual Q Motion Series
QM700
12
Powering up the PA system
It is wise to avoid switching on or off devices
in the signal path while the speaker system is
powered and turned up. Otherwise loud clicks
and bangs could result. When shutting down
the system, always turn the speakers off first.
This is to prevent the speaker amplifying the
sound of the other equipment in the chain
being shut down. The reverse is true when
powering up. Mixers and effects on first,
power amplifiers or powered speakers on last.
Buzzes and Noises in the Sound
System?
This is a specialised study in itself but as an
introduction, here’s a few tips.
BUZZ
Sometimes you can experience a hum and
buzz together. A buzz is almost always a
problem with the “earthing” of the system. It
will often occur when you have the system
powered from separate power outlets in the
same building or audio and lighting sharing a
common power circuit.
Even when the audio and lighting systems are
powered from separate sources, there can
still be a common earth between them. For
example, a smoke machine may be powered
from the lighting system, yet the trigger
mechanism could be connected to the audio
system through the audio multi-core/snake.
An earth connection between the audio and
lighting will now exist and a buzz could be
amplified in the audio system. The simple
solution is to power your audio circuit and
everything connected to it from the same
source. If the buzz persists, check your
signal cables, one may have an earth/shield
disconnected. A cheap but possibly life
saving investment is a domestic power tester
to check that the power supply sockets are
correctly wired. Faulty or incorrectly wired
power is a booby trap that is more common
than you think.
WHITE NOISE
This is the hiss that suggests that the gain
structure is set incorrectly. Something in the
signal chain is boosting too much or an input
is set too sensitive. If your equipment has gain
switches on it, set them all the same. If the
switch is labelled +4dB, set them all to that
figure. If one piece of equipment seems to be
overloading, set them all to -10/-20dB and be
prepared to boost the input level of the QSA
input. The last unit in the chain should be set
to +4 dB at the output stage if possible when
connected to the line level input of the QSA
series input.
CHECK THE POWER
A cheap but possibly life saving investment is a
domestic power tester to check that the power
supply sockets are correctly wired. Faulty or
incorrectly wired power is a booby trap that is
more common than you think.
READ THE WARNINGS!
All audio products are sold with instruction
manuals and this is where the important safety
and user information is found. Always read and
follow the safety directions. All manuals for
Quest products can be downloaded from the
internet at the following address:
www.questaudio.net/downloads/
We love receiving your gig stories and photos
and we welcome comments and ”war stories”
from Quest users. Contact [email protected]
Page 15
QM700
User Manual
User Manual
Q Motion Series
QM700
13
Page 16
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
Loading...