Orion XTR475 User's Manual
Contents
1. INTRODUCTION 1 DESCRIPTION FEATURES 2 3 SYSTEM PLANNING 4 7 SETTING SIGNAL JUMPERS 8 19 INSTALLATION 20 27 SYSTEM ADJUSTMENTS 28 TROUBLESHOOTING 29 SPECIFICATIONS 30 WARRANTY INFORMATION 31 DESIGN All ORION amplifiers are designed on our sophisticated CAD system utilizing the latest technology available PRODUCTION All ORION amplilicrs are made in the USA with high quality double sided PC boards containing superior grade components PRODUCT USE The ORION XTR Series sets new standards tor performance and reliability They can attain sound pressure levels well in excess of 130 dB Use common sense and wear hearing protection when appropriate INTRODUCTION Congratulations You have purchased the finest Car Audio Amplifier available in the market today The new XTR series of Amplifiers are the result of many years of2. NO AUDIO CURRENT LIMITING CIRCUITRY The amplifier will produce more power at lower impedance loads without going into early protection MODULE SLOTS INPUT JUMPER gt S Din Vl a POWER NER d R5 N IN 2 IN 1 IN 4 IN 3 INPUT GAIN 1 2 INPUT GAIN 3 4 SYSTEM PLANNING The most important part of your amplifier installation is system planning Deciding on a system plan will determine the configuration of your signal jumpers modules and amplifier wiring To help you we have included four systems of the most common with the information necessary to configure the signal jumpers and the modules New XTR amplifiers have the unique ability to be set up ina master slave configuration In this configuration the master amplifier controls the gain of the slave amplifier s SYSTEM 1 Four full range outputs for front rear speakers One amplifier drives two pair of full range speakers The amplifier is configured for this system from the factory Amplifier output is full range The lowest recommended impedance is 2Q per channel stereo SOURCE 4 CHANNEL FULL RANGE AMPLIFIER CROSSOVER CONFIGURATION 00550 Bypass im 60689 SYSTEM 2 Two channels bridged with low pass crossover for woofer Two channels stereo with high pass crossover for midrange tweeter e Amplifier output
3. combining the power from the left and right channels to have one channel of amplification The output capability is normally double the amount of a single stereo channel ORION amplifiers can be bridged to a single mono channel or mixed mono MONO MODE 1 CHANNEL Use the right negative and the left positive speaker outputs Note Any time you bridge an amplifier each channel sees half the impedance of the speaker load For example if you bridge a single 4 ohm speaker each channel will see a 2 ohm load In this configuration NS we recommend that you sum the left and right inputs SS NOT USED mono age10 j to see pag BRIDGED OUTPUT BRIDGED OUTPUT A CAUTION When using an amplifier in mixed mono the passive crossover frequency should not overlap Failure to do so make cause damage to amplifiers and loud speakers WHAT OF INPUTS AND OUTPUTS CAN BE USED There are three different ways you can get signal to your amplifier RCA DIN and High Level Input Regardless of your source unit ORION has provided an input configuration to maximize the performance of your system You can also use different combinations of RCA DIN and High Level Inputs and Outputs Listed are different ways to get audio signal in and out of your amplifier RCA INPUTS AND OUTPUTS CONFIGURATION RCA signal input range to make full power 150mV RMS to 5 V RMS RCA left and right inputs are the main i
4. research and development and ORION s expertise in building high quality high performance amplifiers Each ORION amplifier is hand built and thoroughly tested to ensure that it will perform under the most demanding conditions Our five step quality control process and a two hour burn in help us produce the best sounding most reliable amps on the planet These new amplifiers offer the improved sound quality and raw power you expect from ORION but as a bonus we have added four Module Slots The slots can accept our new crossovers and other signal processors that will be introduced in the future These new amplifiers are compatible with any speaker system and can be used with existing amplifiers to upgrade your system This means you don t have to purchase external crossovers In the System Planning Diagram section we have outlined some killer systems that have been built and tested by our Technical Support Team Each system has diagrams and pictures of the configuration jumpers to make setting up the inputs and crossovers easy If you have any question about your new amplifier or need help designing your system call our Technical Support Department at 1 602 730 8200 DESCRIPTION AND FEATURES PRS MOSFET POWER SUPPLY PULSE REGULATED SUPPLY A very large regulated power supply improves sound quality and amplifier damping so that large bass transients are reproduced accurately ORION s power supplies are very stable and perform
5. when using the SLF 1 crossover module The module 51015 are configured in series this amplifier has the capability of 12 dB octave high pass low pass or bandpass operation 24 dB octave high pass or low pass operation is also possible An additional module is required for bandpass or 24 dB per octave operation 80 Hz LOW PASS 120 Hz LOW PASS 160 Hz LOW PASS 200 Hz LOW PASS Note When two low pass filters of the same frequency are used for 24 dB per octave operation the cut off frequency will decrease by 20 percent When two high pass filters of the same frequency are used for 24 dB per octave operation the cut off frequency will increase by 20 percent INSTALLATION This section details the mechanical and electrical procedures you will need to perform the installation of your ORION amplifier Take a moment to look over the list of precautions tools and additional parts needed to successfully complete the job GENERAL PRECAUTIONS Before installation make sure you pick a location that will provide adequate ventilation around the amplifier The ORION amplifier has massive heatsink fins to couple generated heat to surrounding air space via thermal convection However if the amplifier is mounted in a tight space without any air movement over time the amplifier can fail in spite of its thermal protection circuits Therefore we recommend that you mount the amplifier flat on the floor under the front seat or i
6. CAUTION Be Sure To Turn Off The Power When Disconnecting And Re connecting Cables External fuse blowing bass frequencies low voltage Incorrect wiring or short circuit abuse damaged speakers battery connections Refer to Electrical Installation and check each installation step WARRANTY amp SERVICE ORION Industries Inc hereafter ORION warrants this product to be free from defects in material and workmanship under the following terms zm PARTS and LABOR are warrantied for a period of 2 years from the date of the first tonsumer purchase from an Authorized ORION Dealer Except as specified below this warranty covers ALL defects in material and workmanship in this product The following are NOT covered by this warranty channel all channels 1 Any product which is NOT purchased from an Authorized ORION Dealer If you are uncertain as to whether your dealer is authorized please contact ORION at 602 730 8200 in countries other than the USA each distributor warrantees the ORION products which it sells 11 product is purchased from a non authorized dealer the warranty is 90 days form date of purchase 0 03 6Hz to 30 kHz 2 Any product on which the serial number has been defaced modified or Signal to Noise 10008 removed oet 40 000 10 000 Ohms 3 Damage or malfunction resulting from a A a accident misuse abuse unauthorized modification or fa
7. D DIN AUX 3 amp 4 CH 3 amp 4 ENABLING OR BYPASSING GAIN CONTROL FOR CH 384 GAIN ON 3 amp 4 IS ENABLED GAIN 3 amp 4 AND CH 3 amp 4 MODULE SLOT A ARE BYPASSED NOTE CH 3 amp 4 MODULE A BYPASS SWITCHES MUST BE TURNED OFF DIN AUX 3 amp 4 CH 3 amp 4 DIN AUX 3 amp 4 CH 3 amp 4 AMPLIFIER CONFIGURATION DIAGRAM ACTIVATING SUMMED MONO OPERATION Adding the single black jumper pictured below sums the output of the amplifier under any condition Left and Right inputs are internally summed Channels 1 2 or 3 4 0 44314 suid eubis OM saJO0USQ e aq ue zey suid eubis om se3ouag gt 7 Qm vou Deos Oy xnv ZHDALNO W MAX THONINIVO HDE Hs ZN VOY 5 Zhou 200 INI ino ZW LOS anaon vios noo 0 1 4no iN zunoxay Ino 1no ZNI 4 1075 TINDOW ino 1 A EHS NI NIVO ETE e AD LNO V BAX 1100 xnv 2 182 182 e O xnv 9 NIG 2 i Ni vow C
8. IER CROSSOVER CONFIGURATION 12 48 HIGH PASS 120 Hz 12 dB HIGH PASS A CHANNEL LOVV Uy AMPLIFIER CROSSOVER CONFIGURATION SETTING SIGNAL JUMPERS Setting the signal jumpers allows you to route the input signal several ways For example you can have inputs 1 and 2 routed directly to the Auxiliary output and to channels 3 and 4 This elimates external patch cords and allows you to drive multiple amplifiers from a source unit that has only one pair of RCA outputs You can also route the signal through one or both of the internal module slots of the amplifier Thiss allows you to use one crossover module for all four channels of the amplifier or one crossover module for multiple amplifiers In some systems you can improve performance by bypassing the gain stage of the amplifier Inside the amplifier there are two sets of jumpers The jumpers on the right configure channels 1 amp 2 and the jumpers on the left configure channels 3 amp 4 The following diagrams show you the most common options The un shaded areas show the path of a stereo signal JUMPER PROGRAMMING RIGHT BLOCK 4 signal selections for AUX 1 amp 2 loop outputs AUX 18 2 RECEIVES DIRECT COPY OF CH 1 amp 2 INPUTS DIN AUX 3 amp 4 CH 384 AUX 1 amp 2 RECEIVES CH 1 amp 2 MODULE SLOTS A amp B SERIES OUTPUTS JUM
9. Mixed amp Summed Selectabl via Signal Selectable via Signal n 5 Jumpers For IN WARRANTY service you must include a copy of the original dated sales including serial number from an Authorized ORION Dealer Please also enclose your tame return street address No P O Boxes and a detailed description of the problem 22 x8l2 x 21 4 I xclusion 1 This warranty is in lieu of all other warranties expressed or implied 2 In no event will ORION be liable for any consequential damages resulting from use of the products or any defect in the product I his Warranty gives you specific legal rights and you may also have other rights whith vary from state to state HER 31 TO HIGH PERFORMANCE CAR AUDIO 1995 Orion Industries Incorporated 118 West Julie Drive Tempe Arizona 85283 Phone 602 730 8200 Fax 602 831 8101 One of the ADST family of companies Part 9000 0072
10. PER PROGRAMING AUX 1 amp 2 RECEIVES CH 1 amp 2 MODULE SLOT A OUTPUTS DIN AUX 3 amp 4 CH 3 amp 4 CH 3 amp 4 ARE ROUTED TO AUX 1 amp 2 OUTPUT CH 3 amp 4 ARE ROUTED TO DIN AUX 3 amp 4 ENABLING OR BYPASSING GAIN CONTROL FOR 182 GAIN ON CH 1 amp 2 IS ENABLED GAIN 1 amp 2 AND CH 1 amp 2 MODULE SLOT A ARE BYPASSED NOTE CH 1 amp 2 MODULE A BYPASS SWITCHES MUST BE TURNED OFF B o mu O aaa o oo AUX AUX 1 amp 2 1 amp 2 G CH CH 1 amp 2 1 amp 2 CH CH DIN AUX 3 amp 4 CH 3 amp 4 DIN AUX 3 amp 4 CH 3 amp 4 JUMPER PROGRAMMING LEFT BLOCK 4 signal selections for 3 amp 4 inputs DIN 3 amp 4 RECEIVES DIRECT COPY OF CH 1 amp 2 INPUTS CH 3 amp 4 RECEIVES CH 1 amp 2 MODULE SLOT A OUTPUTS ER 9 o 0 DIN AUX 3 amp 4 NOT CONNECTED DIN AUX 3 amp 4 NOT CONNECTED CH 3 amp 4 RECEIVES CH 1 amp 2 MODULE SLOTS A amp B SERIES OUTPUTS CH 3 amp 4 RECEIVES INPUT FROM JACKS ONLY DIN AUX 38 4 NOT CONNECTE
11. R AND SPEAKER CONNECTORS These new connectors accept larger gauge wire and simplify the installation With less power loss the overall power and performance of the system is improved LARGE EFFICIENT HIGH EFFICIENCY HEAT SINK Large CNC machined high efficiency anodized aluminum heat sink incorporating a large surface area allowing components to run cooler and more efficient for maximum heat dissipation MIXED MONO OPERATION One amplifier can power an entire speaker system using passive crossovers Left and right speakers run in stereo with a woofer bridged mono This is a very popular configuration for low cost entry level system PARALLEL 8 PIN DIN AND RCA INPUTS OUTPUTS Amplifiers can be linked together using DIN or RCA connectors for easy connection in multi amp systems These new eight pin DIN connectors are fully compatible with previous ORION amplifiers crossovers and pre amps MILITARY SPEC DOUBLE SIDED PLATED THROUGH CIRCUIT BOARDS All ORION circuit boards are reinforced with nickel and plated through for greater reliability with through hole parts 15 VOLT PHANTOM POWER SUPPLY FOR ORION SIGNAL PROCESSORS On board power supplies for external processors eliminates grounding problems that can cause engine noise in the system COMPLIMENTARY BI POLAR MATCHED OUTPUTS Matched outputs have less distortion and better sound quality Thermal stability is improved as heat is dissipated from the devices more evenly
12. ROSSOVER CONFIGURATION USING CROSSOVER MODULES The ORION four channel amplifiers have four module slots each pair is in series Module slots are used for crossovers and other future modules Factory shipped the XTR four channel amplifiers have bypass modules installed In default operation the amplifier output is full range Included with the amplifier is two additional modules which can be installed in either slot depending on the system configuration desired The SLF 1 Selectable Low Frequency 1 slot size module can be configured for either high or low pass 12 dB per Octave filter operation It has four selectable frequencies 80Hz 120Hz 160Hz and 200Hz BYPASS BYPASS foa di le osa cac 65999 22899 jos These Jumpers determine crossover type high pass or low pass 2 o t lt gt B 10 H 2 Y 2 24 dB oct Low pass 12 dB oct Bandpass 80 Hz HIGH PASS 120 Hz HIGH PASS 160 Hz HIGH PASS 200 Hz HIGH PASS These Jumpers determine frequency Listed below are the eight possible configurations
13. ilure to follow the Input Sensitivity PES Volts instructions provided with the product Output Load 20 to 80 212 to 8 2 b repair by anyone NOT authorized by ORION lt damage due to shipping these claims must be presented to the freight carrier Current Dre 1 50 Amps to 70 Currant Drow Mete 50 Amps removal or installation of the product Fuse Size 2x20 Amp 2x30 Amp e any failure that has NOT been caused by a defect in material or workmanship M Peu This warranty is in effect for the original purchaser only ORION will pay for labor Damping Factor Greater than 200 Greater than 200 material expense for covered items ORION does not cover removal or installation j arges payment of shipping charges to ORION payment of OUT OF WARRANTY Slew Rate 30 Volts per psec Volts per psec upping charges or damage to other property caused by any defects in this product Stereo Separation 7006 7008 NE rai To obtain service take or ship the product pre paid in its original packaging if input Output Selectable via Signal Jumper Eee teas you do not have the original packaging the product must be packed so no damage will 2 Mace or Reno be incurred the product during its shipment to configuration gr ORION Industries Inc Selectable via Crossover Crossover Settings Signal Jumpers Attn Repair Department Internal 118 West Julie Dr Tempe AZ 85283 USA
14. is low pass for woofer on CH 3 amp 4 Amplifier is configured for summed bridged mono operation on CH 3 amp 4 e CH 1 amp 2 are configured for stereo high pass output The lowest recommended impedance is 4Q bridged mono SOURCE 4 CHANNEL LOVV RANGE AMPLIFIER CROSSOVER CONFIGURATION SYSTEM 3 Amplifier 1 Four channels with high pass crossover for front rear speakers Amplifier 2 Two channel amplifier with low pass crossover for woofer The lowest recommended impedance 2Q per channel stereo The lowest recommended impedance 4Q bridged mono CH 3 amp 4 are passed out AUX 1 amp 2 SOURCE E HIGH RANGE AMPUFIER CROSSOVER CONFIGURATION 120 Hz 12 dB HIGH PASS 120 Hz 12 dB HIGH PASS 2 CHANNEL LOW RANGE AMPLIFIER CROSSOVER CONFIGURATION SYSTEM 4 Amplifier 1 Four channels bridged with low pass crossover for two woofers Amplifier 2 Four channels with high pass crossover for front rear speakers e The lowest recommended impedance 2Q per channel stereo e The lowest recommended impedance 462 bridged mono Amplifier 1 1 2 3 and 4 are 120Hz high pass output e Amplifier 2 CH 1 amp 2 are bridged 80Hz low pass output e Amplifier 2 CH 3 amp 4 are bridged 80Hz low pass output SOURCE ACHANNEL HIGH RANGE AMIPLIF
15. minal before making any power connections 2 Reinforce the battery ground Use an 8 gauge wire ground to ensure an adequate ground See Detailed Power Connections 3 Connect the power cable directly to the positive terminal CAUTION DO NOT connect amplifier power wire to fuse box 4 Use a fuse within 18 inches of the battery 5 Make sure that all connections are clean and properly secured Failure to do so may result in damage to the components in the system 6 Make sure the power wire enters the vehicle safely Always use a grommet when routing wire through metal 7 Run wire through the vehicle in appropriate areas Avoid power routing wires near the fuse box or other audio cables and sensitive electronics They can radiate noise into your power wire Never get power from the fuse box this can cause noise problems and other electrical problems 8 Once you have selected the mounting location mount the amplifier using the four self tapping screws provided Tighten screws securely CAUTION Do not drill into the fuel tank fuel lines or through electrical wiring 9 Connect power wire to the power plug supplied with the amplifier to the chassis of the vehicle Make sure connection is short and secure as possible 10 Ground the amplifier Be sure the ground is secure to prevent power loss due to resistance caused by a poor ground 11 Make speaker connections Do not allow the speaker leads to come into con
16. n all power off 2 Set the gain controls on all amplifiers to their minimum positions Distorted Audio input Sensitivity not set properly or damaged speaker s See Calibrating Input Sensitivity procedure and check each step inspect each speaker for damage and repair or replace suspected component 3 Set all frequency controls on the 300 PRQ Equalizer to flat response dots in top center position If 300 PHD or 300 PSW Low turn on voltage Refer to head unit owner s is being used set both frequency controls and the boost cut manual controls to the center position 4 If a PRQ PHD or PSW is being used set both input controls Audio leve low Mute circuit is on Check electrical system for to minimum fully counterclockwise and the volume control to low Sd 2 speaker maximum fully clockwise R RTA 5 Turn on power to amplifiers Turn on the radio and set the Poor bass Speakers wired with Check polarity of wires from Volume control for approximately 7 4 volume response wrong polarity amplifiers to each speaker as 6 Adjust each input gain control on the pre amp until the system 68 51091680661138 01170 denned Dy ine sys tein check is at full output just below clipping If the input gain controls on the pre amp do not produce full volume increase the gain setting of each amplifier as required to realized full output Decrease the setting of the Volume control on the 300 PRQ to desired listening level
17. n the trunk Remember heat travels up away from the heatsink fins In addition please observe these precautions Do not enclose the top of the amplifier unless you have a cooling fan Direct cool air along the length of the fins rather than across them for the most efficient cooling Remember any moving air will dissipate heat REQUIRED TOOLS Electric drill drill bits Utility knife Phillips and flat head screwdrivers Pliers standard and needle nose Wire cutters strippers Wire crimping tool Wire brush and emery sandpaper for metal Rubber grommets Heat shrink tubing Soldering iron and solder Nylon tie wraps Volt Ohm meter VOM or DVM Felt tip pen or spring loaded center punch tool REQUIRED PARTS Included Four mounting screws Power ground plug Speaker plug Fuse Not Included Power wire Remote turn on wire Battery fuse RCA DIN input cables Speaker cable Battery terminals OPTIONAL PARTS 5 accessory company carries everything you need to complete your car audio system MBR 70 Multiple Battery Regulator Audio Interlink Cables RCA amp DIN Modular Power Distribution POWER BLOCKS Passive Crossovers Modular Fuse Holders POWER BLOCKS Raw Crossover Components Speaker Cable Automotive Carpet Vinyl amp Grill Cloth Power Cable Ground Cable Damping Material Battery Terminals AMPLIFIER WIRING 1 Disconnect the vehicle s battery negative ter
18. noise if you keep the amplifier gain as low as possible This can be accomplished best with a preamp such as the ORION 300 PRQ PHD PSW If there are no accessories equalizers crossovers etc used in the system Turn off all power listing make sure the vehicle s electrical system is working properly by verifying that other electrical items e g headlights windows etc still function correctly Symptom Probable Cause No Audio Low or No Remote Turn On connections Blown Fuse Power wires not connected Blown speakers Solution Check remote turn on voltage at amp and head unit Replace with new fast blow fuse Check butt splices or solder joints check Ground and Battery connections Use VOM or DVM to measure 2 Set the Gain controls on all amplifiers to their minimum not connected speaker coil impedance position check speaker wiring connections 3 Turn on the power to the amplifiers Turn on the radio and set the Volume control to approximately volume Audio cycles Thermal Protection Check location for 4 Adjust the Gain control on each amplifier until the system is at on and off Circuits are properly adequate ventilation check full output just below clipping shutting amplifier off speaker wiring for a short to each time it gets too hot chassis 5 Set the Volume control on the radio for desired listening level ORION accessories are being used 1 Tur
19. nputs for the amplifier RCA s AUX are programmable See Setting Signal Jumper section of this manual Maximum RCA output 8 V RMS when using internal gain stage CHANNEL 1 CHANNEL1 N CHANNEL AUX IN AAA CHANNEL 2 CHANNEL 4 AUX N CHANNEL 2 IN USING ONE PAIR OR TWO PAIRS OF RCA INPUTS ONE PAIR TWO PAIR je ele ele pel fee e 1 2 3 4 are fed by CH 1 amp 2 fed by front RCA one pair of RCA connectors connectors CH 38 4 fed by rear RCA connectors DIN INPUTS OUTPUTS AND PHANTOM POWER e DIN signal input range to make full power 150mV RMS to 5 V RMS DIN AUX 3 amp 4 is programmable Maximum DIN output 8 V RMS when using internal gain stage 15 Volt Rails can supply Phantom Power to ORION accessories e Ground is used for power ground for Phantom Power and audio ground for both DIN audio input and outputs GROUND 1 CHANNEL 1 INPUT 15 V PRE AMPLIFIER CHANNEL 2 INPUT 15 V PRE AMPLIFIER SUPPLY RAIL 6 i AUX 3 2 Aux 4 1 1 CHANNEL 1 CHANNEL 1 AUX IN CHANNEL 3 IN CHANNEL 2 CHANNEL 4 AUX IN CHANNEL 2 IN TROUBLESHOOTING GUIDE This section provides you with a catalog of amplifier symptoms and their probable causes and solutions Before you consult this SYSTEM ADJUSTMENTS You will get less system
20. tact with each other or to ground when the 5 amplifier is on This will cause a noise problem may cause internal damage to the amplifier 12 Connect the signal cables to the amplifier 13 Connect remote turn on lead This wire needs 12 volts input to turn on the amplifier 14 Make necessary gain adjustments POWER AND SPEAKER CONNECTIONS Power and ground connection is made via the 8 ga power connector The ground wire should be as short as possible and grounded to the chassis of the vehicle Do not use a self tapping screw for the ground connection A loose connection can cause resistance in the circuit and overheat the amplifier A bolt nut and washers are recommended SPEAKER CONNECTIONS Speaker connections are made using the 12 ga speaker connector The connector is marked for left and right speakers positive and negative terminals POWER CONNECTIONS 8 gauge wire used for both the power and ground wire Fuse holder as close a possible to the battery less than 18 Add additional ground wire to battery equal to the power wire used for B of the amplifier COVER RELEASE REM PUSE FUSE FUSE SIZE KEEP FUSE 18 60 7 OR CLOSER TO MINIMAL THE BATTERY MODE 1 CHANNEL WIRING Output can be configured left right or mono output The lowest recommended impedance is 4 bridged mono BRIDGING All ORION amplifiers can be bridged by
21. under the most demanding conditions FOUR BUILT IN MODULE SLOTS Four internal module slots are used for unlimited system flexibility Use one crossover module for a 12dB per octave slope or add an additional module to create a bandpass or 24dB per octave crossover Other types of modules for signal processing will be introduced in the future INPUT SIGNAL ROUTING AND SUMMING The input signal can be routed back out the amplifier via the DIN plug or RCA jacks The signal can be routed through the internal crossover or be a full range output The input signal can also be summed mono GAIN STAGE BYPASS The internal gain stage of the amplifier can be bypassed so that one master amplifier can be used to control the gain of the slave amplifiers This can be used in systems with multiple low frequency amps to perfectly level match the system In addition the gain stage on the high frequency amplifier can be bypassed for improved sound quality and a better signal to noise ratio The signal to noise ratio is improved by as much as 10dB REMOVABLE TOP PANEL This provides easy access to the crossover module slots and signal jumpers After the amplifier is installed it is very easy to add a crossover module or reconfigure the input jumpers To remove panel use a small flat blade screwdriver Use screwdriver on endplate in the hole marked cover release Gently pry up top panel It will snap back in either direction LARGE QUICK DISCONNECT POWE
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