User
Manual
MODEL: HPI25
Contents
Safety Precautions ............................1
General Description ............................3
Features .....................................3
Connections and installing the HPI25 ..............4
HPI25 Specifications ...........................5
HPI25 Spare Part Reference .....................6
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
HPI25
User Manual
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.
WARNING
Flying the box from one insert must not be attempted!
Improper installation may result in damage, injury or death.
HPI25
User Manual
3
General Description
The HPI25 is a very compact wide frequency
range multi-purpose 2-way passive speaker
system designed for discrete very high-fidelity
audio installations where a low visual profile
yet high output is required.
It is suited to full range front-of house sound
for short and mid throw applications in both
standalone applications or in a distributed
system. (See HPI Series bass speaker
systems).
The HPI25, like all speakers in the HPI Series
have been designed to deliver high fidelity
audio performance without the requirement of
dedicated system processors.
Features
The HPI25 has a number of features designed
to increase performance and versatility for a
professional sound installation environment.
A great deal of attention was paid to the
details of the design to make the HPI25 both
sonically impressive and functionally suited
to all aspects of very compact mobile and
permanently installed sound reinforcement.
High Powered Purpose Designed
Components
A powerful 1” diaphragm high frequency
driver matched to a Quest designed mid/
short throw and rotatable horn flare delivers hi
fidelity high frequency response with medium
throw capability.
The HPI25 is a bass-reflex design where the
porting is specifically dimensioned to match
the low frequency range capabilities of the
two high powered 5” transducers, despite the
relatively small dimensions of the drivers and
the enclosure.
Exceptional vocal and midrange response
makes the HPI25 an exceptional performer
when it comes to natural sounding vocal
projection and reproduction of acoustic
instrumentation.
Driver Placement
An added benefit with the HPI25 design is
the capacity to relocate all the transducer
components to suit the audio application.
The HF horn can be moved to the centre
and rotated to horizontal dispersion to suit
a theatre infill or delay or alternatively the
system can have the 5” drivers located
together to increase directivity for added
“throw”. The horn can be located also at the
top or the base of the cabinet for precise
control of HF coverage.
Functional Design
The recessed input panel and innovative
installation bracketing system allows a
visually tidy installation in both vertical
and horizontal installation. The speaker
impedance of 8 ohms means two
loudspeakers can be connected to each
channel of a 4 ohm minimum amplifier.
Solid Build Construction
Built for long life in high heavy duty cycle
environments, the HPI25 is well suited to
all professional applications. The ply timber
casing, high powered components and heavy
gauge power-coated steel grill make the
HPI25 “a tough package for a tough world”.
Mounting the HPI25
The HPI25 can be wall mounted with the
accessory U bracket UB-HPI25 or a ball
mount UB1-OMA. Ceiling mounting is
possible with the UB2-OMA mounting kit.
UB1-OMA
Single Wall Mount
UB2-OMA
Ceiling/Wall Mount
HPI25
User Manual
4
OUTPUT ASSIGNMENT
PIN 1+ :
PIN 1- :
SIGNAL
G
ROUND
LINK A
LINK B
INPUT A
INPUT B
Push To Reset
~
220 240V 10A 50/60Hz
OUTPUT A
OUTPUT B
PIN1:
PIN2:
PIN3:
SIGNAL G ND
SIG NAL +
SIGNA L -
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
OFF 80Hz 110Hz
LOW PASS -A
26dB
32dB1.4V
GAIN
STEREOPARALLEL BRIDGE
MODE
OFF 35Hz 80Hz
HIGH PASS -B
OFF 80Hz 110Hz
LOW PASS -B
ON OFF
LIMITER
LIFT GROUND
GROUND
DESIGNED BY QUEST ENGINEERING,AUSTRALI A
MODEL:
OFF 35Hz 80Hz
HIGH PASS -A
OFF 35Hz 80Hz
HIGH PASS -A
10
1
1 2
5
10
1
5
Two Neutric Speakon model 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.
Suitable Amplification
The HPI25 is an 8 ohm enclosure and can be
connected in multiple parallel connections to
an amplifier channel. In the case of a 4 ohm
minimum amplifier, this means that 2 x HPI25
speakers can be connected to each channel.
Connecting the HPI25
The recommended power range per amplifier
channel is 350-600 watts RMS into an 8 ohm
load or up to 900/1,200 watts RMS into a 4
ohm load. The HPI25 will work well with the
Quest QA2004/3004 amplifiers.
The QM1000P sub/satellite amplifier can
also be employed when a compact amplifier
installation is required to power 2 x HPI25 and
2 x HPI12S system per channel.
Setting crossover frequencies
Set the QA amplifier’s high pass filter at
80Hz if the system will be driven hard in a full
range application. If you are intending to add
sub bass speakers or use for mainly vocal
reproduction, the high pass filter should also
be set to 80Hz.
Recommended HPI25
Amplifier Configuration
Reducing low frequency
output will make
more amplifier power
available for clean vocal
reproduction for full
range sound, set the
high pass filter to 80Hz.
Rec Amplifier 240 - 360W Nom.
Impedance 8Ω
Frequency response 60Hz - 19kHz
Max. SPL 118dB
Directivity Rotatable 100° x 60°
[horizontal x vertical]
Woofer 2 x 5” Propitiatory Design Woofer
Tweeter 1” Ferrite Compression Driver
Connections & wiring 2x Speakon 1+/-
Dimensions 432mm x 182mm x 150mm
Net weight 9.3kg
Rigging options U bracket or ball mount pan/tilt Quest UB1/2 wall and ceiling
mount.
HPI25
User Manual
5
HPI25 Specifications
Typical Frequency Response
Technical Specifications
110
100
90
80
70
60
50
20 50 100 200 500 1k 2k 5k 10k 20k
Frequency (Hz)
(db) Level, sound pressure
HPI25
User Manual
6
HPI25 Spare Part Reference
No. Description Spare Part
1 HPI25 Wooden cabinet HPI25C
2 Woofer - 5” - 150W rms - 16ohms T5001
2bis Recone kit for T5001 (5” woofer) RT1005
3 Compression Driver 1.0” exit (1.4” voice-coil, 25W rms, 8ohms) T1011
3bis Compression driver recone (diaphragm for T1011) RT1011
4 Horn-flare for HPI25 (plastic injected PP) HWGHPI25
5 Complete grill for HPI25 (perforated steel with acoustic foam) HGHPI25
6 Passive filter network (assembly) for HPI25 AXHPI25
7 Manufacturer information (sticker) HMSHPI25
8 Connection plate (with 2 Neutrik NL4 connectors) HCPHPI5
9 Internal metal plate (x2) HIPHPI5
1
2
3
4
5
6
7
8
9
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