SPL 18 INTEGRATED SELF POWEREDSUB LOUDSPEAKER SYSTEM

Applications:

Low Frequency enhancement of:� Concert Sound Reinforcement� Auditorium Installations� Dance Clubs� Houses of Worship� Theatre and Film� Corporate A/VFeatures:� Fully integrated amplifier/speaker combination� High power and low distortion provide true sonic accuracy� ISC system protection and CoolPortTM technology� A flexible Sub Bass solution for all applications - just connect a signal and AC power

ABOUT THE SPL18The SPL18 is an integrated bandpasssubwoofer and amplifier combination,using a single 18� long throw driver. Itis designed to provide extended lowfrequency from 35 Hz to 100 Hz toenhance existing speaker systems.The cabinet is built throughout frompremium grade void free plywood, withextensive bracing to reduce unwantedcoloration, and is painted in multipletextured coats of catalysed polyure-thane.Originally designed as a complementa-ry sub bass cabinet for the SPL12, theSPL18 can easily be used with otherspeaker systems. Since its control elec-tronics and amplifier are built-in, theSPL 18 is the perfect add-on whenmore low frequency output is required- for any system!All that�s required to vary the systemsetup are some patch leads and an ACpower feed.

INSIDE INFORMATIONThe all new amplifier design inside theSPL18 uses existing proven analogamplifier technology for predictableoperation in all professional applica-tions.Its transformer based power supplyand Mosfet drive circuitry both enablea reduced parts count for long termreliability. Plus, with their inbuilt selfregulation, Mosfets are accepted asbeing the most thermally reliable andpredictable amplifier output stage avail-able.The 18� bass driver and the output ofthe amplifier section are perfectly

matched to form a composite unit thatis designed to do only one thing, and doit extremely well.

BENEFITSThe benefits, both acoustic and prac-tical, of the amplifier/speaker combi-nation are many:� Improved speaker response. The

close-coupled design deliversgreater actual power at the speakerand improves the damping factor.

� Thermal reliability. Thanks to ourunique heat exchange/cooling de-sign, the harder the system is driven,the more efficiently the heat ex-changer operates.

� There is no power loss caused bylong runs of loudpeaker cable - typi-cally 30 meters (100�) or more. Allthe amplifier power is delivered tothe speaker.

� An elegant all in one solution - amp,processor, speaker are combined.There are no amp racks to store andcool, no heavy speaker cabling torun.

� Reduced number of connections con-tributes to inherent low noise, andgreatly reduces the possibility ofground loops.

OTHER FEATURES� L and R mix to mono built in. With

separate inputs and loop throughoutputs for Left and Right channels,the SPL18 needs no special settingup when run in a mono Sub configu-ration.

� Phase Switch and Level control onrear panel for compatibility withexisting systems

� Locking AC power connectors. Byusing the Neutrik PowerCon de-sign, the power connector locks tothe cabinet, avoiding the problemof a connector vibrating loose dur-ing a performance.

As well, an extra auxiliary AC poweroutput is fitted as standard, so thatsystems can be powered in a serial/daisy chain layout rather than a radialmanner, thus reducing the cabling re-quired.At ARX we have designed the SPLseries to be a true �building block� au-dio system.� It is truly cost effective, with no need

for speaker cabling, extra amplifiersor amp racks.

� The modular concept means totalflexibility, with system inventorykept at the most efficient level. Toincrease or decrease the size of thesystem, simply add or remove cabi-nets as required.

� With a lower parts count than stan-dard systems, and under- stressedcomponents used throughout, me-chanical and electrical reliability isconsistent with world�s best prac-tice.

To sum up, the SPL series successfullycombines state of the art design withpractical, proven technology to deliveran integrated speaker/amplifier solu-tion with all the dynamic impact andtransparent audio that today�s audi-ences expect.

ARX Systems Pty Ltd, Australia; Phone: +61-3 9555 7859 Fax: +61-3 9555 6747

©1999 ARX Systems Pty.Ltd. ACN 006 471 825. All rights reserved. ARX Systems® is a Registered Trade Mark.

SPL 18 Specifications

Frequency response 35Hz - 100Hz +/– 4dBLoudspeaker type 18” 450mm 8 OhmsSize 845H x 540W x 585DWeight 60 Kgs

Input Connectors 3 pin Female XLR, polarity Pin 2 +,Pin 3 –, Pin 1 Ground

Input Impedance 44K Balanced (electronic)Nominal input level 0dB for nominal rated amplifier outputsInput Loop Connectors 3 pin Male XLR, polarity Pin 2 +,

Pin 3 –, Pin 1 GroundSub Level Control –10dB to +6dB, detented for 0dBPhase Reverse Normal or 180° reversed

Crossover Frequency 100HzCrossover Type 24dB Linkwitz Riley Filter typeHighpass Filter –3dB @ 35Hz 24dB Linkwitz RileyMaximum SPL 128 peak, 125 continuous

Amplifier power 400 Watts RMS 8 ohms, 625 W PeakAmplifier type Lateral MosFetTHD <.01%Loudspeaker protection ISC amplifier anti-clipping circuitry

Relay muted inputRelay switched output sensing DCand RF error

Status LEDs AC Power, Protection Active

AC Power 110V / 220V / 240V 50 / 60HzAC Power Input Neutrik PowerCon locking type

NAC 3 FCAAC Power Loop Neutrik PowerCon locking type

NAC 3 FCBAC Power protection User resettable external circuit breakerAC Wattage Max 600 VA (600 Watts)Transformer type Toroidal, thermally protected

@ 110 Deg C

Architects’ and Engineers’Specifications

Every ARX speaker system provides in-novative solutions designed to deliverultimate audio reproduction.Our integrated self powered speakersystems, like every audio product wemake, have been engineered for flaw-less performance day after day, nightafter night.

FRONT SIDE REAR

REAR CONNECTOR PANEL DETAIL

The speaker system shall be an active bandpasssubwoofer system powered by an internal poweramplifier. This amplifier shall have an onboard24dB Linkwitz Riley crossover at 100 Hz.The frequency response of the system shall be35Hz - 100Hz +/– 4dB and shall contain a LowFrequency 18" 460mm 8 ohm driver.The amplifier power shall be 400 Watts RMS 8ohms. The amplifier type shall be a Lateral Mos-Fet design. THD shall be <.01% and the High-pass filter shall be –3dB down@ 35Hz.Loudspeaker protection shall include anti-clip-ping circuitry, relay muted input, and relayswitched output sensing DC and RF error.There shall be Left and Right Input 3 pin FemaleXLR connectors, polarity Pin 2 +, Pin 3 –, Pin 1Ground, and the Input Impedance shall be 44KBalanced (electronic), with a nominal input levelof 0dB for nominal rated amplifier output.There shall also be corresponding 3 pin MaleXLR Input Loop Connectors, polarity Pin 2 +, Pin3 –, Pin 1 Ground for continuation of the inputsignal(s) to other parts of the system. There shallalso be a subwoofer volume control and a 180°Phase Reverse switch on the input panel.AC Power input shall be preset at either 110V/220V/240V, 50/60Hz. The AC Power Input shallbe the Neutrik PowerCon type NAC 3 FCA, andthe AC Output shall be the Neutrik PowerContype NAC 3 FCB. AC Power protection shall beprovided by a user resettable external circuitbreaker. Maximum AC Wattage shall be 600 VA(600 Watts).The transformer type shall be Toroidal, and ther-mally protected by a safety cutout @ 110 Deg C The integrated self powered speaker systemshall be the ARX SPL18

Specifications available on disk and CD ROM<

Our policy is one of continuous improvement, andtherefore designs may change without notice.However, unless otherwise stated, specificationswill always equal or exceed those previouslygiven.