User
Manual
MODEL: HPI12S
Contents
Safety Precautions ............................1
General Description ............................3
Getting The Best From Your HPI12S ...............4
Flying Your System ............................6
HPI12S Specifications ..........................8
HPI12S Reference Diagram ......................9
User Manual HPI Series
HPI12S
HPI12S
User Manual
User Manual
HPI Series
HPI12S
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
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WARNING
When the Unit is in Use
• Turn down amplifiers before switching on
the system. 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 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
• Flying and\or installation of this speaker
cabinet must be carried out by suitably
qualified personnel following the
locally authorised and approved safety
standards.
• 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.
WARNING
Flying the box from one insert must not be attempted!
Improper installation may result in damage, injury or death.
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General Description
The HPI212S is designed as a very compact
high output sub bass loudspeaker for
permanent installation and live sound.
For permanent installation, the lightweight
cabinet can be flown using the threaded
inserts. This feature and the very compact
size makes the HPI12S ideal for venue
environments where a conventional sub
bass system would be too physically large or
intrude into the visual design of the venue.
Versatile and Functional
The HPI12S sub bass is primarily intended
to deliver sub bass support to the HPI5/25
or HPI8i speaker systems but it can also
be deployed with any small to medium
format speaker or distributed system where
extended medium output sub bass is
required from a compact enclosure. A 35mm
pole insert top hat is also installed so a
distance rod can be attached for accepting
a satellite speaker in a mobile performance
environment.
Please read and become familiar with the
following installation manual to get the best
results from your Quest HPI series speakers.
All Quest HPI series speakers are designed
and for the high end professional live sound
industry. However they will give better results
if they are installed and operated within
standard industry practice. Pay particular
attention to the section on “Overhead
installation and rigging” if you are flying an
array of speakers or flying the sub bass.
Features
The HPI12S has a number of features
designed to increase performance and
versatility for a professional mobile sound or
permanent installation environment. A great
deal of attention was paid to the details of
the design to make the HPI12S both sonically
excellent and functionally suited to touring
sound reinforcement and also A/V rental
markets.
The compact design makes it possible to
locate the HPI12S under a low stage or stage
riser. The back input panel is located on
a recessed and sloping panel intended to
relieve the strain on the input cable and also
make it possible to locate the sub cabinet
against a wall.
Solid Build Construction
Built for a heavy duty professional use, the
HPI12S is well suited to all professional
applications.
Like all Quest products, it is “built tough for a
tough world”.
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Connections
Two NL-4 connectors are mounted in a
recessed panel on the rear surface of the
box. This allows the speaker box to be set flat
against a wall without physical interference to
the speaker connector.
• 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 HPI12S
Amplification
The performance of any loudspeaker depends
on the amplifier delivering an adequate
supply of clean power.
Please ensure a suitable amplifier is selected
for use in conjunction with the HPI12S and
accompanying speaker system.
Power in the Right Hands Can Save
Your Speakers
If the loudspeakers are used for a
professional application with competent
operators, the power principle is as follows:
When the loudspeaker is needed to achieve
maximum output levels, the amplifier
should be able to sustain a peak of twice
the wattage listed in the loudspeaker
specifications. A quality amplifier will provide
a clean peak voltage capability of 6 dB above
the maximum RMS power of the amplifier.
To avoid “clipping” or distorted output
from a lesser quality amplifier, select an
amplifier with double the RMS power rating
of the loudspeaker. The thermal limits of the
speaker are unlikely to be exceeded with an
undistorted signal.
HPI12S in Recommended
Configuration (4 ohm total
load)
Band-pass frequency range for
better results
Reducing low frequency output below 40 Hz will help
protect the 12” woofer in higher power applications.
Better sonic results will result if the HPI12S is
operating at a frequency range no lower than 40Hz.
OUTPUTASSIGNMENT
PIN1+:
PIN1-:
SIGNAL
GROUND
LINKA
LINKB
INPUTA
INPUT B
PushTo Reset
~
220 240V10A50/60Hz
OUTPUT A
OUTPUT B
BR
IDGE
PIN1:
PIN2:
PIN3:
SIGNALG N D
SIGNAL +
SIGNA L -
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OFF 80Hz 110Hz
LOWPASS-A
26dB
32dB1.4V
GAIN
STEREOPARALLEL BRIDGE
MODE
OFF 35H z 80Hz
HIGHPASS-B
OFF 80Hz 110Hz
LOWPASS-B
ON OFF
LIMITER
LIFT GROUND
GROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALI A
MODEL:
OFF 35H z 80Hz
HIGHPASS-A
OFF 35Hz 80Hz
HIGHPASS-A
10
1
1 2
5
10
1
5
OUTPUTASSIGNMENT
PIN1+:
PIN1-:
SIGNAL
GROUND
LINKA
LINKB
INPUTA
INPUT B
PushTo Reset
~
220 240V10A50/60Hz
OUTPUT A
OUTPUT B
BR
IDGE
PIN1:
PIN2:
PIN3:
SIGNALG N D
SIGNAL +
SIGNA L -
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OFF 80Hz 110Hz
LOWPASS-A
26dB
32dB1.4V
GAIN
STEREOPARALLEL BRIDGE
MODE
OFF 35H z 80Hz
HIGHPASS-B
OFF 80Hz 110Hz
LOWPASS-B
ON OFF
LIMITER
LIFT GROUND
GROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALI A
MODEL:
OFF 35H z 80Hz
HIGHPASS-A
OFF 35Hz 80Hz
HIGHPASS-A
10
1
1 2
5
10
1
5
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Avoid Amplifier Clipping
Bearing in mind the previously described
principle of amplifier power being higher
than speaker power, keep signal levels low
enough so that neither the Clip or Limit Active
indicators are blinking frequently or are on
continuously. If they are, turn down the input
signal level.
A low power amplifier that is clipping will
quickly damage the loudspeaker.
The Secret to Long Life
A competent audio system operator will
operate the loudspeaker within its limits.
Operation beyond the loudspeaker’s
capabilities usually includes, but is not limited
to, one or more of the following conditions:
1. Amplifier clipping
2. Noticeable distortion
3. Mechanical noise (such as a cone
bottoming out)
4. The gain to the amplifiers is increased with
no audible increase in sound pressure level
(power compression).
At a minimum, the operator should have a
meter display on the mixing desk calibrated to
indicate where the amplifier’s maximum RMS
voltage limits will be reached.
How to Calibrate the Mixer VU
Meter
With the loudspeakers disconnected, turn up
the mixer with program music until the mixer
VU meter indicates +3dB on peak. Check
the amplifier status lights and if the clip light
appears intermittantly the VU meter will be a
guide as to available amplifier power.
The purpose of this test is to determine at
what point of the mixer VU amplification, the
amplifier is at full power. Depending on signal
path, this could be anywhere between 0dB
and +6 on the mixer VU.
Finding a Suitable Amplifier
The HPI12S is an 8 ohm system.
A recommended minimum power range per
amplifier channel is 800-1,000 watts RMS into
a 4Ω load.
An ideal partner for the HPI12S is the Quest
QA 2004/3004 as each channel is capable of
providing more than 800 watts RMS into a
4Ω load.
For any application where the HPI12S is to be
used in parallel connection to the amplifier,
ensure the amplifier is capable of providing up
to 1,000 watts RMS into a 4Ω load.
Setting the QA amplifier’s high pass filter at
35Hz is recommended for clean high SPL
applications.
Loudspeaker Wire Gauge
The proper conductor size (wire gauge) to
use for the loudspeaker cable is primarily
a function of the wire length. The general
rule is that lower resistance, in relation to
the loudspeaker’s impedance, is better. To
achieve this, use larger conductor sizes
for longer lengths of cable and for lower
impedance loudspeaker loads. For wiring
cables to sub bass boxes, 2.0 - 2.5mm 14
Gauge would be the minimum for short cable
runs.
Standard AWG
• 14ga ... 0.6410” dia = 1.63mm dia
10.44ohm/km
• 16ga ... 0.0508” dia = 1.29mm dia
13.17ohm/km
• 18ga ... 0.0403” dia = 1.02mm dia
20.94ohm/km
Euro Standard Wire
• 1x1.00mm2 = 18 ga AWG
• 1x1.50mm2 = 16 ga AWG
• 1x2.50mm2 = 14 ga AWG
• 1x4.00mm2 = 12 ga AWG
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Overhead Installation and Rigging
“Rigging” is used in this manual as a general
term referring to fixed mounting or hangin
suspension as well as the hardware used for
such mounting and suspension. It also applies
to temporary and permanent installation.
Mounting or rigging overhead suspension of
any speaker box load can result in serious
injury and equipment damage if not done
correctly. Rigging and installation personnel
must determine the mounting or suspension
method that takes into consideration all loads
that the speakers and rigging system will be
subjected to. All such work must be done
in accordance with and in compliance with
all government, state, and local regulations
governing such work.
NOTE: The user assumes all responsibility
and liability for the proper design, installationand use of any rigging and mounting systems
for Quest Engineering loudspeakers.
NOTE: Accessory items are available from
Quest Engineering and aftermarket suppliers
to facilitate suspension, wall, ceiling, or other
rigging. When using these items, review all
enclosed documentation and carefully follow
all instructions and safety precautions.
Flying Your System
Purchaser\Installer Responsibility
It is the responsibility of the purchaser and
end-user of Quest Engineering products to:
1. Read the product instructions and labels
and follow them.
2. Inspect the product immediately upon
receipt as well as before and after each use.
3. Receive training in the proper installation
and use of the equipment. Proper training
includes safety procedures, limitations of the
equipment, inspection of the equipment, and
risk management. If you are not competent in
the use of a product, do not use it.
4. Determine if the product is suitable for its
intended use and that it meets all applicabl
standards and regulations.
6. Use adequate back-up rigging safety
systems.
Rigging and Safety
Whether mobile sound or fixed installation, for
best and safest results your speakers need to
be installed and positioned correctly. Placing
a mid-high on a sub bass and pointing it
at the crowd does not ensure safety if the
speaker vibrates and falls off the stage and
into the audience. This also applies when
hanging a box from a lighting bar with non
rated hardware.
Only a professional installer with extensive
and proven knowledge of load limits and
weight ratings atempts flying any loudspeaker
product.
WARNING
Use a thread retention compound such as “Loctite” to make sure the
bolts are firmly secure and cannot become loose.
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Maintenance of Rigging
Suspension systems can degrade with time,
exposure to atmospheric conditions and ware,
they require regular inspection and routine
maintenance to insure the speaker cluster
and fittings are secure. The installation must
be inspected for fatigue at least annually. The
inspection must include a survey of all load
bearing surfaces including those attached to
the building for signs of deterioration or any
other condition that may decrease the strength
of the installation or loudspeaker enclosure.
Quest Engineering or its distributors are not
responsible for the non legal application or
misuse and abuse of its products by installers
and product users.
HPI12S Rigging Points
The HPI12S casing contains internal threaded
inserts for flying the box. Rated M8 eye bolts
can be attached to the casing for flying the box
in a permanent installation.
HPI12S as a mobile system
The HPI12S can be coupled with any of the
compact HPI systems for an ultra compact
high quality full range system.
When coupled with the Quest QM1000P
sub satellite flexi amp, 2 x HPI12S sub bass
elements and a number of HPI satellite boxes
(depending on the model) can be connected.
This flexible combination can function well
as both a mobile system or for permanent
installation.
Drawing of HPI12S with eye bolt fly points
Drawing of HPI12S with HPI8i pole mounted.
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HPI12S Specifications
Power Handling 500 W rms
Frequency Response 42-250 Hz
Sensitivity 92 dB
Maximum SPL @ 1m 125 dB
Impedance 8 ohms
Connections and Wiring Input 1+/- ; Through 2+/-
Woofer 12 inch woofer (x1)
Dimensions 540 x 470 x 365 mm
Weight 20.5 kg net
Typical Frequency Reponse
Technical Specifications
HPI 12S - Frequency Response - 2.83V/1m (processed)
HPI 12S - Frequency Response - 2.83V/1m
Frequency (Hz)
100 1k 10k
90
70
50
20 50 200 500 2k 5k 20k
100
80
60
40
20
(dB) Lev el, Sound pre ssure
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HPI12S Reference Diagram
4 - connection panel
(2x NL4MP)
5
- Manufacturer plate
8
-metal dish
(handle back cover)
10
-short rubber skids
2
-12 inch high-excursion woofer
3
- Metal grill with foam glued on the inside
7
-Q badge
25mm
6
- pole mount plate
(here 1/2 microphone thread)
9
- metal internal reinforcement
1
- HPI1S wooden cabinet
HPI12S speaker Compact High performance single 12" subwoofer
MPCHPI12S speaker - manuf. kit Manuf. Kit - Complete HPI12S without driver
ASBHPI12S speaker - quest kit Quest kit - Complete HPI12S with drivers
T12009
2
driver 12" high-quality LF driver to suit HPI12S
RT12009 recone recone kit for HSG317 (HPI212S)
HGHPI12S
3
grill complete grill to suit HPI12S (includes acoustic foam)
HCP12S
4
hardware connection plate for HPI12S
HMP12S
5
hardware manufacturer plate for HPI12S
HTHP2
6?
hardware top hat plate (standard) 2
HIB12S
9
hardware internal metal bracket fof HPI12S
HSK52
10
accessory rubber skid - short -52mm
HQB25
7
accessory Q-badge 25mm with spring loaded pin
8 handle
1 wood cabinet
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
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