User
Manual
MODEL: HPI212S
Contents
Safety Precautions ............................1
General Description ............................3
Getting The Best From Your HPI212S ..............4
Flying Your System ............................6
HPI212S Specifications .........................8
HPI212S Reference Diagram .....................9
User Manual HPI Series
HPI212S
HPI212S
User Manual
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.
1
WARNING
Indicates a potentially hazardous situation which, if
mishandled, could result in death or serious personal injury.
HPI Series
HPI212S
User Manual
HPI212S
User Manual
WARNING
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
2
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.
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.
User Manual HPI Series
HPI212S
WARNING
Flying the box from one insert must not be attempted!
Improper installation may result in damage, injury or death.
HPI212S
User Manual
General Description
The HPI212S is designed for the permanent
installation and live sound touring market.
It is suited to mid to high sound pressure level
bass and sub bass high fidelity reproduction
as a stand-alone unit or in combination with
the 18” HPI18LP sub bass as a multi-way sub
bass system.
Versatile and Functional
The HPI212S sub bass is primarily intended to
deliver sub bass support to the HPI-110/210
speaker system but it can also be deployed
with any medium format speaker array or
distributed system where extended high
output sub bass is required from a compact
enclosure.
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 HPI212S 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 HPI212S 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 HPI212S under a stage. 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 touring environment, the HPI212S is
well suited to all professional applications.
Like all Quest products, it is “built tough for a
tough world”.
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HPI Series
HPI212S
User Manual
HPI212S
User Manual
Getting The Best From Your HPI212S
Connections
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 HPI212S and
accompanying speaker system.
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
4
disconnect.
Reducing low frequency output below 35 Hz
will make more amplifier power available for the
audible bass frequencies and help to prevent the 12”
drivers from excessively heating up.
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
10
10
10
10
5
5
5
5
1
1
1
1
12
12
LINK A
LINK A
PIN1:
PIN1:
PIN2:
PIN2:
PIN3:
PIN3:
LINK B
LINK B
SIGNAL GND
SIGNAL GND
SIGNAL +
SIGNAL +
SIGNAL -
SIGNAL -
INPUT A
INPUT A
INPUT B
INPUT B
OFF 35Hz80Hz
OFF 35Hz80Hz
HIGH PASS -A
HIGH PASS -A
OFF35Hz80Hz
OFF35Hz80Hz
HIGH PASS -A
HIGH PASS -A
OFF80Hz110Hz
OFF80Hz110Hz
LOW PASS -A
LOW PASS -A
HIGH PASS -B
HIGH PASS -B
OFF35Hz80Hz
OFF35Hz80Hz
LOW PASS -B
LOW PASS -B
OFF80Hz110Hz
OFF80Hz110Hz
STEREOPARALLEL BRIDGE
STEREOPARALLEL BRIDGE
MODE
MODE
MODEL:
MODEL:
LIMITER
LIMITER
ON OFF
LIFTGROUND
ON OFF
LIFTGROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALIA
DESIGNED BY QUEST ENGINEERING,AUSTRALIA
of the loudspeaker. The thermal limits of the
speaker are unlikely to be exceeded with an
undistorted signal.
CAUTION
26dB
26dB
32dB1.4V
32dB1.4V
OUTPUT A
OUTPUT A
GAIN
GAIN
BR
BR
GROUND
GROUND
OUTPUT B
OUTPUT B
CAUTION
RISK OF ELECTRIC SHOCK
RISK OF ELECTRIC SHOCK
DO NOT OPEN
DO NOT OPEN
OUTPUT ASSIGNMENT
OUTPUT ASSIGNMENT
PIN 1+ :
SIGNAL
PIN 1+ :
SIGNAL
IDGE
IDGE
Push To Reset
Push To Reset
PIN 1- :
GROUND
PIN 1- :
GROUND
220240V 10A 50/60Hz
220240V 10A 50/60Hz
~
~
User Manual HPI Series
HPI212S
HPI212S in Recommended
Configuration (4 ohm)
HPI212S
User Manual
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 HPI212S is a 4 ohm enclosure.
A recommended minimum power range per
amplifier channel is 1,000 watts RMS into a
4Ω load.
An ideal partner for the HPI212S is the
Quest QA3004 as each channel is capable of
providing more than 1,000 watts RMS into a
4Ω load.
For any application where the HPI212S is to
be used in parallel mode, ensure the amplifier
is capable of providing up to 2,000 watts RMS
into a 2Ω 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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HPI Series
HPI212S
User Manual
HPI212S
User Manual
Flying Your System
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.
6
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.
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.
User Manual HPI Series
HPI212S
WARNING
Use a thread retention compound such as “Loctite” to make sure the
bolts are firmly secure and cannot become loose.
HPI212S
User Manual
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.
HPI212S Rigging Points
The HPI-212S casing contains 10 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.
The HPI212S as Part of a Larger
System
The HPI series is designed to be multifunctional. Both the HPI212S and HPI18LP
can be used as a stand alone sub bass or
independently crossed over, as band pass
elements in a multi-way system.
When used in conjunction with a HPI-212S,
the HPI212S can be band-passed with an
electronic x-over to reproduce a very low
frequency range to provide the very low sub
bass of electronic music and the HPI-212S
can be set at a frequency range to provide the
“punch”. The ideal frequency range to set the
individual box element is as follows:
HPI212S band-passed 75-120 Hz.
HPI18LP band-passed 30-75 Hz.
The filter type needs to be a 24 dB per octave
slope.
Depending on the method of installation and
room acoustics, minor variations to these
settings may be necessary for ideal results.
The HPI Ground Stack Footprint
The physical footprint allows the HPI212S to
interlock with the HPI18LP in a ground stack.
Up to three HPI110 or HPI210 box elements
can be stacked in a ground stack array.
7
Drawing of HPI212S with eye bolt fly points
Do not attach the HPI212S to the HPI110 box inserts if flying the sub
WARNING
bass as part of a flown array.
CAUTION
It is strongly advised to attach the
array flying plate to the top of the
ground stacked boxes to prevent any
box elements being dislodged from
the ground stack. A ratchet strap can
also be used to secure the boxes.
HPI Series
HPI212S
User Manual
HPI212S
User Manual
HPI212S Specifications
Typical Frequency Reponse
110
100
90
80
70
60
50
8
20 50 200 500 2k 5k 20k
HPI 1212S - Frequency Response - 2.83V/1m (processed)
HPI 1212S - Frequency Response - 2.83V/1m
Technical Specifications
Power Handling 1000 W rms
Frequency Response 45-250 Hz
Sensitivity 92 dB
Maximum SPL @ 1m 131 dB
Impedance 4 ohms
Connections and Wiring Input 1+/- ; Through 2+/-
Woofer 12 inch Ferrite (x2)
Dimensions 900 x 520 x 395 mm
Weight 36.5 kg net
User Manual HPI Series
HPI212S
100 1k 10k
Frequency (Hz)
HPI212S Reference Diagram
6
7
HPI212S
User Manual
3
4
5
9
2
bis
2
9
1
8
No. Description Spare Part
1 Complete Grille (inc. foam) HGHPI212S
2 12” Woofer (x2) T12007
2bis Recone Kit for 12” Woofer RT12007
3 Top Hat HTHHPI
4 Connection Plate (inc. Connectors) HCP212S
5 Manufacturer Plate HMP212S
6 Internal Metal Brace (x3) HIB212S
7 Rubber Skid 182mm HSK182
HPI Series
HPI212S
User Manual
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