Quest Engineering HPI12S Manuel utilisateur

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

User Manual

HPI Series

HPI12S

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

HPI12S

User Manual

User Manual HPI Series

HPI12S

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.

HPI12S

User Manual

HPI Series

HPI12S

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”.

HPI12S

User Manual

User Manual HPI Series

HPI12S

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.

OUTPUT ASSIGNMENT

PIN1+ :

PIN1-:SIGN AL

GR OUND

LINKA

LINKB

INPUTA

INPU T B

PushTo Reset

~220 240V10A50/60Hz

OUTPUT A

OUTPUT B

BRIDGE

PIN1:

PIN2:

PIN3:

SIGNALG N D

SIG N AL +

SIGNA L -

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

OFF 80H z 110Hz

LOW PASS-A

26dB

32dB1.4V

GAIN

STEREOPARALLEL BRIDGE

MODE

OFF 35Hz 80Hz

HIGHPASS-B

OFF 80Hz 110Hz

LOW PASS-B

ON OFF

LIMITER

LIFT GROUN D

GROUND

MODEL:

OFF 35Hz 80Hz

HIGHPASS-A

OFF 35Hz 80Hz

HIGHPASS-A

1 2

OUTPUT ASSIGNMENT

PIN1+ :

PIN1-:SIGN AL

GR OUND

LINKA

LINKB

INPUTA

INPU T B

PushTo Reset

~220 240V10A50/60Hz

OUTPUT A

OUTPUT B

BRIDGE

PIN1:

PIN2:

PIN3:

SIGNALG N D

SIG N AL +

SIGNA L -

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

OFF 80H z 110Hz

LOW PASS-A

26dB

32dB1.4V

GAIN

STEREOPARALLEL BRIDGE

MODE

OFF 35Hz 80Hz

HIGHPASS-B

OFF 80Hz 110Hz

LOW PASS-B

ON OFF

LIMITER

LIFT GROUN D

GROUND

MODEL:

OFF 35Hz 80Hz

HIGHPASS-A

OFF 35Hz 80Hz

HIGHPASS-A

1 2

HPI12S

User Manual

HPI Series

HPI12S

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 4Ω 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

4Ω 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 4Ω 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

HPI12S

User Manual

User Manual HPI Series

HPI12S

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, installation-

and 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.

HPI12S

User Manual

HPI Series

HPI12S

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.

HPI12S

User Manual

User Manual HPI Series

HPI12S

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

20 50 200 500 2k 5k 20k

100

(dB) Level, Sound pressure

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