ARX SPL 8H User manual

SPL 8H Owner's Manual v 1 ©2003 ARX® SPL 8H Owner's Manual v 1 ©2003 ARX®
8 1
SPL 8H
Integrated Self Powered
Loudspeaker System
Owner’s Manual
WarrantyServiceProcedure
Should it become necessary to have your equipment serviced under the terms of the
warranty, please follow these steps:
1. Contact ARX for a Return Authorization (RA) number;
2. Carefully repack the unit, in its original packaging where possible, including a note
with the RA number, a description of the problem, and a copy of the receipt
showing date of purchase. Attach these to the actual unit itself. Don’t forget to write
your name and address clearly, and include a phone number where you can be
contacted during normal business hours. Make it easy for our service technicians to
contact you if they have a question. Also, use plenty of packing material - better to
be safe than sorry.
3. Send the unit freight prepaid to ARX Systems, at the address given you with your
RA number. We will pay the return freight when the serviced unit is returned to you.
4. We strongly recommend you insure the package. We can’t fix it if it gets lost! Send it
by UPS, Fedex, DHL or a similar service elsewhere.
If Warranty Registration Card is missing, please write to ARX in the country of purchase,
stating model and where purchased, or to ARX, PO Box 15, Moorabbin, Victoria 3189,
Australia.
You can also Email us at: [email protected]
INTERNATIONAL LIMITED WARRANTY
ARX Systems (ARX) warrants to the first purchaser of any ARX equipment that it is
free from defects in materials and workmanship under normal use and service.
ARX’s sole obligation under this warranty shall be to provide, without charge, parts
and labour necessary to remedy defects, if any, which appear within twelve (12)
months from date of purchase, and for a further twelve (12) months supply parts
only.
Thisisouronlywarranty.Itdoesnotcover(1)finishorappearanceitems,(2)burned
voice coils, or (3) if the equipment has been, in ARX’s sole judgement:
• Subjected to misuse, abuse, negligence or accident;
• Repaired, worked on, or altered by persons not authorized by ARX;
• Connected, installed, adjusted or used for a purpose other than that for which it
wasdesigned.Thisincludesrunningspeakersystems(a)withouttheappropriate
ISC processor (b) with a non ARX crossover, or (c) with the ISC disconnected
or bypassed.
Some states do not allow the exclusion or limitation of incidental or consequential
damages so some of the above exclusions may not apply to you.
This warranty gives you and us specific legal rights and you may also have other
rights which vary from state to state.
ARXARX
ARXARX
ARX Systems Pty Ltd, PO Box 15,
Moorabbin, Victoria 3189, Australia
PhonePhone
PhonePhone
Phone: [phone] FaxFax
FaxFax
Fax: [phone]
International FaxInternational Fax
International FaxInternational Fax
International Fax: [phone]
On the WebOn the Web
On the WebOn the Web
On the Web: www.arx.com.au
EmailEmail
EmailEmail
Email: [email protected]

SPL 8H Owner's Manual v 1 ©2003 ARX® SPL 8H Owner's Manual v 1 ©2003 ARX®
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This symbol is intended to alert you to the presence of uninsulated dangerous
voltage within the product's enclosure that may be of sufficient magnitude to
constitute a risk of electric shock.
This symbol is intended to alert you to the presence of important operating
instructions contained in this owner's manual
WARNING SYMBOLS USED ON THIS EQUIPMENT
IMPORTANT - This self-powered loudspeaker is
designed to be connected ONLY to the AC voltage
ticked below
100 V AC, 50 - 60
Hz
!
It is essential that you check that this
voltage is correct for your area before
connecting it to AC power. Do not plug
power cable into AC power until the voltage
has been checked. If incorrect, contact your
ARXdistributor.
Your warranty does not cover connecting to
the wrong AC voltage!
110 V AC, 50 - 60 Hz
220-240 V AC, 50 - 60 Hz
240 V AC, 50 - 60 Hz
Complieswith89/336/EECEMCDirective,amendedby92/31/
EEC and 93/68/EEC and meets the following standards:EN
55013:1990,Sections3.2and3.5EN55020:1988,Sections
4.3,5.4,6.2,7.0,8.0.
ComplieswithAustralianStandardAS/N251053
SPL8H Specifications
Frequencyresponse 70Hz - 20KHz +/– 4dB
Loudspeakertype Low Frequency 8" (205mm) 8 Ohm
High Frequency 8 Ohm; FerroCooled
HF Flare type Modified flat front radial horn flare
Size 460H x 280W x 330D, 7.5° taper to back
Weight 22Kg
Dispersion Nominal 80° H x 60° V
InputConnector 3 pin Female XLR, polarity Pin 2 +,
Pin 3 –, Pin 1 Ground
InputImpedance 44K Balanced
Nominalinputlevel 0dB for nominal rated amplifier output
Input Loop Connector 3 pin Male XLR, polarity Pin 2 +,
Pin 3 –, Pin 1 Ground
CrossoverFrequency 1500Hz
CrossoverType 24dB Linkwitz Riley Filter type
HighpassFilter –3dB @ 75Hz 24dB Linkwitz Riley
MaximumSPL 124 peak, 118 continuous
Amplifierpower 120 Watts RMS 8 ohms, 280 peak
Amplifiertype Lateral Mosfet
THD <.01%
Loudspeakerprotection ISC amplifier anti-clipping circuitry
Relay muted input
Relay switched output sensing DC
and RF error
StatusLEDs AC power, System Protect
ACPower 110V / 220V / 240V 50 / 60Hz
AC Power Input Neutrik PowerCon type NAC 3 FCA
AC Power Loop Neutrik PowerCon type NAC 3 FCB
ACPowerprotection User resettable external circuit breaker
AC Wattage Max 300 VA (300 Watts)
Transformertype Toroidal
This product has a locking removable AC power lead. Switch amplifier OFF and
power OFF before removing connector
To insert power cable, line up pins, insert connector and twist to the right.
To remove, depress lever on top of the connector, twist to the left, and pull out.

SPL 8H Owner's Manual v 1 ©2003 ARX® SPL 8H Owner's Manual v 1 ©2003 ARX®
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BALANCED INPUT CONNECTOR
3 pin female XLR type connector receives
the input signal - typically from the mixing
console. Wired Pin 1 Ground, Pin 2 + (Hot)
Pin 3 – (Cold)
LOOP OUTPUT
3 pin male XLR type connector sends the
signal on to another cabinet if required.
Wired the same as the input
AC POWER/CIRCUIT BREAKER This will
trip to protect the internals if the cabinet
encounters AC power problems. Push IN to
reset. If it continues to trip, remove the
cabinet from use and arrange for checking
by an authorised ARX service centre.
AC POWER INPUT AND OUTPUT The
input connector is designed to receive the
Neutrik PowerCon NAC3FA. This is a fully
safety approved latching ‘twist-and-lock’ AC
connector. For looping power to another SPL
series cabinet, a complementary output
connector, the NAC3FB, is also provided.
SYSTEM PROTECT LED
This LED will illuminate if the SPL 8H’s
amplifier has encountered a problem. Switch
off AC power, wait 15 seconds, and switch
back on. If the problem was temporary, the
cabinet will now operate. If not, arrange for a
service inspection
WARNING MESSAGES
These could save your life and other
people’s. Please read them carefully.
SERIAL NUMBER
Unique to your SPL 8H. Please use it in any
correspondence with ARX
AC VOLTAGE
This will indicate the voltage that the cabinet
is expecting to see on the AC power
connectors. Please ensure that it is correct
for your area before plugging it in!
COOLING SLOTS
These allow cooling air to circulate
throughout the amplifier section. Keep clear
at all times and do not obstruct them with
drapes or anything else
www.arx.com.au
Our Internet site has product news, advice,
technical notes, and lots more on all ARX
products. Check it regularly for the latest
information
SPL 8H REAR PANEL
Setting up and using the SPL 8H
The SPL 8H is very straightforward to setup and start using, but a few basic steps
should be followed.
1. Connect the signal and power cables to the SPL(s) before switching it on.
2. Connect and switch on all preceding equipment (mixer, EQs, etc) before switching
on the SPL 8H(s), but make sure their level controls are pulled down. The SPL 8H
will switch itself on and off silently, but will reproduce (at very high SPL!) whatever
switch-on noise or signal that is sent to it.
Positioningthecabinet
The SPL 8H has a nominal dispersion of 80H x 60V. If arraying 2 cabinets side by side
to cover a wider area, the cabinets can be splayed 40 degrees each side of an imagi-
nary line
The speakers also have a stand mount insert on the bottom surface, so that they can be
mounted on a standard 35mm diameter speaker stand.
The SPL 8H can be wall mounted by using the Omnimount bracket, part no. WB 100 or
similar. The cabinet is screw tapped to receive 4 x 8mm bolts to fit the bracket.
Screw holes are positioned on the top surface for vertical mounting, and also one of the
side surfaces for horizontal mounting
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FRONT SIDE REAR
TOP BOTTOM SPL 8H Layout Details
andDimensions

SPL 8H Owner's Manual v 1 ©2003 ARX® SPL 8H Owner's Manual v 1 ©2003 ARX®
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Introduction
Thank you for choosing this ARX SPL 8H Integrated Self-Powered Loudspeaker
system. We hope you enjoy using it as much as we enjoyed creating it. As with all ARX
equipment, it has undergone precise factory calibration, testing and ‘burn in’ before
shipping. To ensure continued trouble free use, please familiarise yourself with the
contents of this owner’s manual before using your SPL 8H system.
About the SPL 8H
The SPL 8H represents a major change in the way we think of a speaker system. Its
internal amplifier is fully integrated with the speaker combination to create a totally
transparent, powerful and efficient ‘building block’ audio module with well defined
coverage parameters.
Low frequencies are handled by a new 8” (205 mm) driver, and high frequencies by a
FerroCooled* 1” (25mm) compression driver mounted on a flat front radial horn flare.
The cabinet is built throughout from premium grade long strand high density fibrewood,
with a heavy duty steel mesh protective grille, and is painted in multiple textured coats of
catalysed polyurethane.
InsideInformation
The all new amplifier design inside the SPL 8H uses ARX’s existing proven analog
amplifier technology for predictable operation in all professional applications.
Its transformer based power supply and Mosfet drive circuitry both enable a reduced
parts count for long term reliability. Plus, with their inherent self regulation, Mosfets are
accepted as being the most thermally reliable and predictable amplifier output stage
available.
Benefits
The acoustic and practical benefits of the SPL 8H’s amplifier/speaker combination are
many:
• Improved speaker response. The closely-coupled design delivers greater actual
power at the speaker and improves the damping factor. Frequency response is
optimised and phase response is idealised with no potential for mis-adjustment
• Thermal reliability. Our fan-forced temperature management system comes from
ultra-reliable mission-critical computer systems with extended MTBF* criteria.
• There is no power loss caused by long runs of loudspeaker cable which can typically
be 30 metres (100’) or more. All the amplifier power is delivered to the speaker.
• A compact, elegant all-in-one solution - amp, processor, speaker are combined in the
one cabinet. There are no amp racks to store and cool, no heavy speaker cabling to
run.
• Reduced number of connections contributes to inherent low noise, and greatly
reduces the possibility of ground loops.
To sum up, the SPL 8H successfully combines state of the art design with practical,
proven technology. It delivers a compact, integrated speaker/amplifier solution with all
the impact and transparent audio quality that today’s audiences expect.
OtherFeatures
• Noiseless turn on/turn off.
• Interactive System Control, our transparent speaker protection system, keeps the
SPL 8H functioning well within the driver’s Safe Operating Area at all times
• Auxiliary Audio Loop out, to connect the signal chain for multiple cabinets to in a
serial/daisy chain layout if required, rather than radially from a central point.
• Auxiliary AC Power out, to connect to other SPL 8H or SPL 28 cabinets (Max
recommended - 4)
At ARX we have designed the SPL series to be a true ‘building block‘ audio system.
• It is truly cost effective, with no need for speaker cabling, extra amplifiers or amp
racks.
• Ease of installation - simply connect AC power and a signal.
• The modular concept means total flexibility, with system inventory kept at the most
efficient level. To increase or decrease the size of the system, simply add or remove
cabinets as required.
Architects’ and Engineers’ Specifications
Thespeakersystem shall be an active two way reflex system powered by an internal
poweramplifierwithanonboard 24dB Linkwitz Rileycrossoverat1500Hz.
The frequency response of the system shall be 80Hz - 20KHz +/– 4dB. The
loudspeakers shall be a Low Frequency 8" 205mm 8 ohm driver and a High Frequency
compressiondriverwith integralwaveguide.Dispersionshall beanominal120°
Horizontalx120°Vertical.
The amplifier power shall be 120 Watts RMS at 8 ohms. The amplifier type shall be a
LateralMosfetdesign.THDshall be <.01%.
Rated SPL @ 1 metre shall be 124 dB peak, 118 continuous, averaged across cabinet
frequencyresponse.
TheHighpassfiltershallbe–3dBdown@70Hz,andshallbe24dB,LinkwitzRiley
type.
Loudspeakerprotectionshallincludeanti-clippingcircuitry,relaymutedinput,relay
switchedoutputsensingDCandRFerror.
The Input connector shall be 3 pin Female XLR, polarity Pin 2 +, Pin 3 –, Pin 1 Ground,
and the Input Impedance shall be 44K Balanced, with a nominal input level of 0dB for
ratedamplifieroutputs.
There shall also be a 3 pin Male XLR Input Loop Connector, polarity Pin 2 +, Pin 3 –,
Pin1Ground.
The AC Power Input shall be the Neutrik PowerCon type NAC 3 FCA, and the AC
auxiliaryoutputshallbetheNeutrikPowerCon type NAC 3 FCB.ACPowerprotection
shallbeprovidedbya user resettableexternalcircuitbreaker.MaximumAC Wattage
shall be 300 VA (300 Watts).
Thepowertransformer typeshallbeToroidal.
The integrated self powered speaker system shall be the ARX SPL 8H MTBF** - Mean Time Before FailFerroCooled* is a trademark of the Ferrofluidics Corporation