Arx Sx 1500 User manual

SX 1500

SX 3000

Arangeofamplifiersdesignedsmart,andready

for the intensive duty cycle that today’s stan-

dardsofproductiondemand.Morepower,more

protection; less heat, less weight.

Theseamplifiersareadistillationofourex-

perience gained through years of making com-

pact,powerfulamplifiers.TheARXSX1500and

3000aredesignedtosatisfythemostdemand-

ing professional high power applications.

New Technology Inside

Lookinsideeitherofthesenewampsandyou’ll

see that it looks very different from traditional

amplifiers, without their masses of loose wir-

ing, solder tags, and loads of interconnected

circuit boards.

Thetruth is, youcan't keep makingamplifi-

ers the way people did in the ’50’s. We’ve

learnedalotofmanufacturinglessonsfromour

successfulrangeofARXsignalprocessors,and

we’ve adapted those techniques by putting all

the circuitry on one motherboard, thus reduc-

ing the amount of hand wired links.

This enables fast, accurate assembly, and

means that the whole amplifier can be com-

pletely tested before it gets put into the chas-

sis. Both the SX1500 and the SX3000 use our

SplitSupplyTM powersupplyprotocol,enabling

the drive circuitry to be run on a separate DC

rail to the power circuitry.

The benefits of this layout are lower noise,

greatly reduced IM distortion, and more output

power. And isn't that what we all want?

It Ain’t Heavy, It’s My ARX

Some amplifiers are just designed heavy, be-

cause it takes more time and effort and money

to design them light! Well, here at ARX, we’ve

taken the time and effort andspent the money!

Advanced computer modelling techniques

have enabled us to put the strength where it’s

needed, and to reduce excess weight where

possible.

DUAL CHANNEL HIGH CURRENT HIGH POWER AMPLIFIERSDUAL CHANNEL HIGH CURRENT HIGH POWER AMPLIFIERS

DUAL CHANNEL HIGH CURRENT HIGH POWER AMPLIFIERS

What about Protection?

We’ve done intensive research into amplifier

protection, in order to design something that

really does work, not something that should

work! Both the SX1500 and 3000 have new

relay switched resettable protection circuits,

plusournewswitchableSoftClipTM circuitwhich

intelligently protects the amp from clipping.

Unlike simple limiting which can cause

harsh distortion of low frequency signals, the

SoftClip circuit keeps the amplifier from hard

clipping without destroying the sound quality,

yet still retaining the dynamics of the music. A

newI/OcomparatorcircuithasfrontpanelLED

displays fortrueClippingindication,aswellas

Signal Present and Bridged mono mode sta-

tus.Fourvariablespeedtemperaturecontrolled

cooling fans pump air through ARX’s propri-

etary ‘UltraFinTM’ heatsink to keep the SX am-

plifiers cool. When the internal temperature

rises, so does the fan speed.

Built to Last

Over 10 years ago, ARX was one of the first

companiesintheworldtobringoutahighpow-

ered amplifier (the legendary SS700) in only 2

rackspaces!Aconceptthathasbeenembraced

byvirtuallyeveryampmanufacturersincethen.

Today,thousandsofamplifierslater,we’veprob-

ablyhad moreexperienceingettingmore from

less than just about anyone else!

We believe that when you compare all

these standard features to any other amplifier,

you’ll see why your next amplifier should be

one of the SX series from ARX.

As a company, ARX is dedicated to pro-

ducingproaudioproductsthatconsistentlyde-

liver the power and the quality that audio pro-

fessionals expect. TheSX seriesis proofof our

commitment - a line of amplifiers that work as

hard as you do, day after day, night after night.

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!Toroidal trans-

former based

'Extreme Duty'

power supply

!High Joule

capacitors for

maximum LF

output

!Four variable

speed fans

!'SoftClip' switch

!LED status

display of all

amp functions

!Balanced XLR

Inputs; Speakon

outputs

!Super efficient

'UltraFin' heat-

sink

!Unique one

piece mother-

board construc-

tion

!Extra heavy duty

rear mounting

ears

!Flawless perfor-

mance in any

audio environ-

ment

• Relay switched DC sensing

• 'SilentStart/SilentStop' Input/Output muting at turn on/off

• 'SoftStart' on SX1500/3000

Cooling

Dual Ultra Fin heatsinks and variable speed DC cooling fans:

4 fans, air in front and rear, side exit

ACPower

Supplied 'zone-specific' 100/120/220/240V AC with fixed power

lead

Weight

SX1500: 19 Kg (42 lbs)

SX3000: 21 Kg (46 lbs)

Size

All are standard 2 rack units high and 19" (482mm) wide

Depth: 16" (405mm)

Add 3" (80mm) to depth behind front panel to allow for rear rack

mount ears and connectors.

Add1"(25mm)todepthbeforefrontpaneltoallowforhandlesand

controls.

SlewRate 35VuS

DampingFactor 200:1

Construction

All steel chassis and front panel, with Lexan front print. Front

panel power switchand level controls. Rear rack mount ears for

four point racking in high stress mobile installations

All the ARX SX series of amplifiers are designed around

'over-specified' Toroidal power transformers and Heavy

duty diode bridges.

To retain dynamic range under even the heaviest load

conditions, the SX series all utilise large multi capacitor

arrays for high peak current outputs.

All models can be switched to run in bridged mono mode.

InputConnectors

1 x Female XLR and 1 x Male XLR loop out

Pin 3 -, Pin 2 +, Pin 1 Electronic Ground

Output Connectors

Fully insulated Neutrik Speakon

InputImpedance

40 Kohms Balanced

InputSensitivity

SX1500 1.3 Vrms (0 dB)

SX3000 1.4 Vrms (0 dB)

InputCMRR @ 1KHz >70dB

Channel Separation:@ 1KHz –88dB

Frequency response:

@ rated output: 20Hz - 20KHz ±0.4dB

Metering:

LED status indicators for Signal Present, Clip, Bridge, and

Dual Channel Protection

ProtectionFeatures

• Relay switched thermal sensing

How Much Power?

Choose the amplifier power output that’s just

rightforyour application from our Power Chart.

Please Note:When comparing amplifier power

ratings,rememberthatthesearetrueRMSpow-

er ratings and should not be confused with the

unsustainable peak ratings often claimed by

other amplifier manufacturers.

Power Chart

Watts RMS *Both Channels Driven

MODEL 8 OHMS*4 OHMS*BRIDGED 8

OHMS

• XLR inputs

• Bridged mono switch

• Speakon outputs

• SoftClip switch

• Fixed power lead

• Fuse holder

SX1500

SX3000

490 700 1400

660 1000 2000

Our policy is one of continuous im-

provement, and therefore designs may

change without notice. However, un-

less otherwise stated, specifications will

always equal or exceed those previ-

ously given.

Specifications available on CD ROM. Latest updates available at: www.arx.com.au

ARX Systems Pty Ltd; PO Box 15, Moorabbin, Victoria 3189, Australia

Phone: 03 9555 7859 Fax: 03 9555 6747 International Fax +61 3 9555 6747

Email: [email protected] Internet: www.arx.com.au

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