Atlas AP-S20 User manual

– 1 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
AP-S20
AC Power Distribution Unit &
Surge Suppressor

AtlasSound.com – 2 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Table of Contents
Important Safety Instructions.................................................................................................................. 3
Introduction ........................................................................................................................................... 5
Key Features .......................................................................................................................................... 5
Applications ............................................................................................................................................ 5
Front Panel Description........................................................................................................................... 6
Rear Panel Description............................................................................................................................ 6
Installation .............................................................................................................................................. 7
Specifications ......................................................................................................................................... 7
Warranty.................................................................................................................................................. 8

– 3 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other device (including amplifiers)
that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the
other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your
safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they
exit from the device.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the device. When a cart is used,
use caution when moving the cart/device combination to avoid injury from tip-over.
13. Unplug this device during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the device has been damaged in any way, such as
power-supply cord or plug is damaged, liquid has been spilled, or objects have fallen into the device, the device has been exposed
to rain or moisture, does not operate normally, or has been dropped.
15. WARNING: To reduce the risk of fire or electric shock, this device should not be exposed to rain or moisture and objects filled with
liquids, such as a vase, should not be placed on this device.
16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the receptacle.
17. The mains plug of the power supply cord shall remain readily operable.
The lightning flash with arrowhead symbol within an
equilateral triangle, is intended to alert the user 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 to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.

AtlasSound.com – 4 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
When The Device Is In Use
• Topreventelectricshock,donotremovetheproductcoverastherearehighvoltagecomponentsinside.Referallservicingto
Atlas Sound.
• Shouldanyofthefollowingirregularitiesoccurduringuse,immediatelyswitchoffthepower,disconnectthepowercordfromthe
AC outlet and contact Atlas Sound. Do not to attempt to continue operation with the product as this may cause fire or electric shock:
 • Smokeorstrangesmellcomingfromtheunit.
 • Iftheproductfallsorthecaseisdamaged.
 • Ifwateroranymetallicobjectsfallsintotheproduct.
 • Ifthepowersupplycordisdamagedinanyway.
 • Iftheunitismalfunctioning.
• Donotinsertordropmetallicobjectsorammablematerialsintotheventilationholesoftheproduct'scover,asthismayresultin
electric shock or fire.
• Donotplaceanycontainerswithliquidormetallicobjectsonthetopoftheproduct.Ifanyliquidspillsintotheunit,reorelectric
shock may result.
• Neveroperatethisproductortouchthepowersupplycordduringanelectricalstorm,electricshockmayresult.
• Neverexceedthepowerratingontheproductwhenconnectingequipment.Fireand/orpropertydamagemayresult.
• Operatetheproductonlywiththevoltagespecifiedontheunit.Fireand/orelectricshockmayresultifahighervoltageisused.
• Donotmodify,kink,orcutthepowercord.Do not place the power cord in close proximity to heaters and do not place heavy objects
on the power cord, including the product itself, doing so may result in fire or electrical shock.
• Replacetheprotectivecoveroverthespeakerterminalsafterinstallation.Donottouchthe70Vspeakerterminalsaselectricshock
may result.
• Ensurethatthesafetygroundterminalisconnectedtoaproperground.Neverconnectthegroundtoagaspipeasacatastrophic
disaster may result.
• Besuretheinstallationoftheproductisstable,avoidslantedsurfacesastheproductmayfallandcause   
injury or property damage.
When Installing The Product
• Plugginginorunpluggingthepowercordwithwethandsmayresultinelectricshock.
• Nevermovetheunitwiththepowercordpluggedintothewall,asdamagetothepowercordmayresult.
• Whenunpluggingthecordfromthewall,grasptheplug,NOTthecord.
• Neverinstallthisproductinhumidordustylocations,norindirectsunlight,nearsourcesofheat,orinareaswheresootysmokeor
steam are present. Fire and electric shock may result.
• Keepallsidesoftheunitatleast31⁄2"awayfromobjectsthatmayobstructairflowtopreventtheunit'sinternaltemperaturerise.
When The Product Is In Use
• Whenpoweringtheproductupforthefirsttime,ensurethatthelevelcontrolisturneddown.Unexpectedhighsoundpressure
levels may be present at the speakers and result in hearing loss.
• Neverplaceheavyobjectsontheproduct,causingittofalland/orbreak,resultinginpersonalinjuryandpropertydamage.In 
addition, the product itself may fall and cause injury and property damage.
• Neveroperatetheproductforextendedperiodswiththesoundinadistortedcondition.Thisisanindicationofamalfunction,which
may result in excessive heat being generated and causing a fire.
• Contact Atlas Sound for instructions on cleaning the inside of the unit. Large accumulations of dust inside the unit may result in heat
buildup and fire.
• Ensurethatthepowersupplyplugissecurelypluggedintothewalloutlet.Neverallowdusttoaccumulateonthepowerplugor
inside the wall outlet.
• Whencleaningtheunitortheunitisnottobeoperatedforanextendedperiod,unplugthepowercordfromthewall.
CAUTION
WARNING
CAUTION

– 5 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Introduction
Thank you for purchasing the Atlas Power AP-S20 AC Power Distribution & Surge Suppressor Unit. The AP-S20 has been designed to
meet most installation requirements for AC power distribution and equipment power protection.
The AP-S20 features noise filtering for unwanted Radio Frequency Interference (RFI) that is commonly introduced into AC lines by
nearby radio transmitters or wireless products. The benefit of these filters can be seen on video products or audibly by reducing static
pops and external signal interference in sound reinforcement systems.
Unstable AC Mains voltage is one of the main reasons for equipment failure. The amount of energy that can be injected into the power
systemcanbeimmensewithvoltagesreaching6kVorcurrentpeaksof3000A.Thesespikesareveryfastandusuallyonlylastfora
very short period of time. The AP-S20’s circuitry is very fast and can suppress unwanted energy within a nanosecond response and
sustain the suppression up to 2 milliseconds, thus ensuring virtually trouble-free protection. If the suppression circuitry is damaged, the
ACProtectLEDwillturnOfftoindicateafaulthasoccurred.
The AP-S20 offers power management control, noise filtering, and protection against abnormal voltages, spikes, and surges, making it
the most compact, effective power management protection system on the market today.
Key Features
 • 9TotalOutlets
  • 7RearPanelSwitchedOutlets
  • 1RearPanelUnswitchedOutlet
  • 1FrontPanelUnswitchedConvenienceOutlet
 • 12gauge9'(2.74m)Cord
 • RFINoiseFilteringtoReduceRadioFrequencyInterference
 • CircuitBreakerProtection20A
 • VoltageProtectionRating
  • ClampingVoltageL-N:400,L-G:500,N-G:400/3KA,8/20µs
  • Max.SpikeClampingVoltage6KV,1.2/50µs
 • ACProtectActiveIndicator
Applications
TheAP-S20wasdesignedtobeexiblewithfeaturesthatallowittobeusedinavarietyofapplications.TheAP-S20canbeusedsolely
for protection against voltage surges or for AC distribution. If fuzzy video or frequent static pops occur, AC power conditioning may
eliminate or reduce those inconveniences. The following are just a few examples of applications where the AP-S20 can be used:
 • Restaurants
 • HousesofWorship
 • Schools
 • HomeTheaters
 • OfficeBuildings
 • SportsBars

AtlasSound.com – 6 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Front Panel
1. Unswitched AC Outlet
The120VAC20ANEMA5-20RoutletisalwayslivewhentheAP-S20powercordispluggedintoanACMainspowersourceand
voltage is present. Note: The AC Mains power switch does not affect the Unswitched AC Outlet. The Unswitched Outlet is protected
by the surge protection circuitry.
2. AC Mains Breaker
The120VAC20A2500WratedbreakerwillopenifthecombineddrawofallACoutletsexceeds20A.Note: The breaker is designed to
exceed its rating for a short period of time. If the breaker is tripped, you must first remove the load from the AP-S20 and then push to
reset.
3. Power Switch
ToturntheAP-S20OnorOff,presstheswitchtotheONorOFFposition.Thisswitchpowersthe“switched”outlets.Theswitch
willilluminateRedwhenitisintheONposition.
4. Power AC Present LED
WillilluminateRedwhentheACMainsPowerSwitchisintheONposition.
5. AC Protect Active LED
Although the Clamping Suppression circuit virtually assures protection from most transient voltage spikes and surges, nature has
a way of occasionally creating electrical forces that are beyond the capabilities of any device to absorb without some degree of
damage.Intherareinstancethatthisoccursandthecircuithasbeendamaged,theGreen“ACProtectActive”LEDindicatorwillturn
Off, indicating that the AC Protect Circuitry is no longer protecting equipment connected to the Switched outlets. The unit will still
operate as an AC distribution unit but the surge suppressor protection will not function until the unit is repaired. Note:Beadvisedthat
activation of this fault condition and the associated repair is not covered under warranty. If the AC Protect is disengaged, it is important
to have all equipment that was connected to that AC Mains Line be inspected for proper operation.
Rear Panel Features
1. AC Mains Input
Connectthe12gauge9'(2.74m)powercordtoa20A120VACoutlettoprovidepowertotheAP-S20.
2. AC Power Outlets Switched
Seven120VAC20ANEMA5-20Routletsare“Live”whenthefrontpanelpowerswitchisactivated.
3. Unswitched AC Outlet
The120VAC20ANEMA5-20RoutletisalwayslivewhentheAP-S20powercordispluggedintoanACmainspowersourceand
voltage is present. Note: The AC mains power switch does not affect the Unswitched AC Outlet. The Unswitched Outlet is protected
by the surge protection circuitry.
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132

– 7 – AtlasSound.com
Specifications are subject to change without notice.
Owner’s Manual AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Installation
Beforeinstalling,westronglysuggestyoureadtheentiremanualtoensureyoubenetfromallthefeaturesoftheAP-S20.The
AP-S20canbeplacedonashelforrackmountedinastandard19"widthrack.Whenrackmounted,placementwithintherackisexible
howevertheAP-S20shouldbewithin6'ofadedicated20AACoutlet.Whenrackmounting,useRackRailtypescrewswhichare
10⁄32" x 1". Always make sure the 20A outlet is properly inspected by a certified electrician prior to connecting the AP-S20. Make sure to
inspect the equipment that is to be plugged into the AP-S20 to ensure it does not exceed 20A total amperage draw.
Specifications
Type AC Power Distribution & Surge Suppressor
Front Panel
Outlets NEMA5-20R,1Unswitched
ActivationSwitch Rocker,IlluminatesRedwhenintheONposition
ACMainsCircuitBreaker 20AResettable
Indicators ACPowerONRed,ACProtectActiveONGreen
Rear Panel
ACOutlets NEMA5-20R,8Outletstotal:7Switched,1Unswitched
ACMainsPowerCord 9'(2.74m),12gauge,ACPlugNEMA5-20P
Technical Data
Current Rating Limited to 16A 2000W Continuous
CurrentProtection 20AACMainsBreaker
OperatingVoltage 102VAC–132VAC
MOV-NewGeneration Qty.3HottoNeutral,HottoGround,NeutraltoGround
ClampingVoltage L-N:400,L-G:500,N-G:400/3KA,8/20µs
Max.SpikeClampingVoltage 6KV,1.2/50µs
Max. Spike Clamping Resp. Time <1 nanosecond
MaximumSurgeCurrent 45000A,8/20µs
EnergyRating 900Joules,8/20µs
NoiseAttenuationEMI/FRI 40dB@10kHz-100MHz
TemperatureRange 5°–35°C
Humidity Range 5% to 95% R.H.
Mechanical
ChassisFinish Black
Mounting Rack Mount, 1 RU
Height 1.75" (1RU, 44.5mm)
Width 19" (482.6mm)
Depth 3.75" (95.5mm)
Weight 5.5 lbs (2.49kg)
Power Consumption 800 milliwatts
Agency Listings UL and cUL Listed

AtlasSound.com – 8 –
Specifications are subject to change without notice.
Owner’s Manual
AP-S20
AC Power Distribution Unit & Surge Suppressor
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Limited Warranty
All products manufactured by Atlas Sound are warranted to the original dealer/installer, industrial or commercial purchaser to be free
from defects in material and workmanship and to be in compliance with our published specifications, if any. This warranty shall extend
fromthedateofpurchaseforaperiodofthreeyearsonallAtlasSoundproducts,includingSOUNDOLIERbrand,andATLASSOUND
brand products except as follows: one year on electronics and control systems; one year on replacement parts; and one year on
Musician Series stands and related accessories. Additionally, fuses and lamps carry no warranty. Atlas Sound will solely at its discretion,
replace at no charge or repair free of charge defective parts or products when the product has been applied and used in accordance
with our published operation and installation instructions. We will not be responsible for defects caused by improper storage, misuse
(including failure to provide reasonable and necessary maintenance), accident, abnormal atmospheres, water immersion, lightning
discharge, or malfunctions when products have been modified or operated in excess of rated power, altered, serviced or installed
in other than a workman like manner. The original sales invoice should be retained as evidence of purchase under the terms of this
warranty. All warranty returns must comply with our returns policy set forth below. When products returned to Atlas Sound do not
qualify for repair or replacement under our warranty, repairs may be performed at prevailing costs for material and labor unless there is
included with the returned product(s) a written request for an estimate of repair costs before any nonwarranty work is performed. In
the event of replacement or upon completion of repairs, return shipment will be made with the transportation charges collect.
EXCEPTTOTHEEXTENTTHATAPPLICABLELAWPREVENTSTHELIMITATIONOFCONSEQUENTIALDAMAGESFORPERSONAL
INJURY,ATLASSOUNDSHALLNOTBELIABLEINTORTORCONTRACTFORANYDIRECT,CONSEQUENTIALORINCIDENTAL
LOSSORDAMAGEARISINGOUTOFTHEINSTALLATION,USEORINABILITYTOUSETHEPRODUCTS.THEABOVEWARRANTYIS
INLIEUOFALLOTHERWARRANTIESINCLUDINGBUTNOTLIMITEDTOWARRANTIESOFMERCHANTABILITYANDFITNESSFOR
APARTICULARPURPOSE.
Atlas Sound does not assume, or does it authorize any other person to assume or extend on its behalf, any other warranty, obligation,
or liability. This warranty gives you specific legal rights and you may have other rights which vary from state to state.
Service
Should your AP-S20 require service, please contact the Atlas Sound warranty department at
1-877-689-8055, ext. 277 to obtain an RA number.
Atlas Sound Tech Support can be reached at 1-800-876-3333.
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All other trademarks are the property of their respective owners. ATS004045 RevA 4/11