Operation Manual
Contents
1. apparatus shall not be exposed to dripping or splashing no objects filled with liquids such vases shall be placed the apparatus Worded WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING WATER AND MOISTURE Unit should not be used near water e g near a bathtub washbowl kitchen sink laundry tub a wet basement or near a swimming pool etc Care should be taken so than objects do not fall and liquids are not spilled into the enclosure through openings PA 9312 9324 9336 9348 1 PUBLIC ADDRESS POWER AMPLIFIER Unpacking Although your PA 9312 9324 9336 9348 is neither complicated nor difficult to operate we recommend you take a few minutes to read this brief manual and familiarize yourself with the important information regarding product features setup and operation As with most electronic devices we strongly recommend you retain the original packaging In the unlikely event the product must be returned for servicing the original packaging or reasonable equivalent is required Installation Environment Never place this product in an environment which could alter its performance or reduce its service life Such environments usually include high levels of heat dust moisture and vibration Important Safety Instructions Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth2. 9336 13 60 9348 10 20 2 LEVEL CONTROL This knob provides continuous control of the amplifier s output level from 124 to OdB reference input of OdB at 1V Turning the knob clockwise increases the level and turning it counter clockwise decreases the level PA 9312 9324 9336 9348 5 PUBLIC ADDRESS POWER AMPLIFIER 6 FAN VENTS These vents provide hot air flow out of the unit It is important to keep them free of obstructions to prevent the unit from overheating It is also important to operate the unit in a dust free environment AC POWER INPUT Connect the supplied standard AC input cable here FUSE HOLDER This holder contains the AC overload protection fuse If the fuse has blown out replace it with a fuse of the same type and rating If the fuse continues to blow refer servicing to a qualified service technician HIGH PASS FILTER SWITCH This switch activates the high pass filter circuitry which decreases frequencies lower than 400Hz The high pass filter is designed to protect speakers from damage caused by excessive low frequency transients AUDIO INPUTS These balanced XLR jacks are for the input of audio signal GROUND LIFT SWITCH This switch provides for connection or disconnection of the amplifier s ground to AC earth ground to prevent noise from ground loops Under most circumstances this switch should be set to FRAME
3. Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 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 apparatus 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 apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus 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 apparatus the apparatus has been exposed to rain or moisture does not oper
4. Operation Manual Public Address Power Amplifier PA 9312 9324 9336 9348 inter I PUBLIC ADDRESS POWER AMPLIFIER Contents Welcome dt t e tee eked sala R Ie a 1 B eret are ETT TO 2 Installation Environment eee ete cere rep Pene 2 Important Safety Instructions 20254 blah lah lat ates hie ol ce 2 rrr d ACCESSOMIES 3 ODGFOHO 3 C 4 Rear Panel cce etel tui dp impietate ERE 5 Connecting Speakers 7 Applications oc 8 Block Diagram eso er b 9 Sp cificalions cuoco C o ua 11 Procedures 12 Schematic accom 12 Li Stine ee e eee 12 Variations and Options er erret 12 OL Ce en 12 PUBLIC ADDRESS POWER AMPLIFIER Welcome A personal welcome to you from the management and employees of Inter M All of the co workers here at Inter M are dedicated to providing excellent products with inherently good value and we are delighted you have purchased one of our prod
5. 8 1n0 9336 9348 NOITdO 9NISN3S LA 093345 vna AW134 3sn4 00 gt 93 14 031 TO N0I193103d Avet O I d 1 1190 A00 1 wyog AOL 39 110 p 315 13431 H SWHOMOL 224 9312 9324 9336 9348 10 PUBLIC ADDRESS POWER AMPLIFIER Specifications and design subject to change without notice Specifications Rated Output Power THD 5 1kHz 120W 240W 360W A80W Frequency Response 1 70Hz 18kHz T H D Less than 1 Less than 5 High Pass Filter 400Hz 3dB Gain Control 12dB S N Better than 95dB Better than 90dB Input Sensitivity Impedance 1V 10ko Balanced Output Voltage Impedance 40 22 40 31 40 38 40 43 8 5 20 25 2 60 25 80 54 80 62 420 70 210 70 13 60 70 10 20 70 830 100V 420 100 27 82 100V 20 80 100 Operating Temperature 10 C 40 Power Source 100 1 20VAC or 220 240VAC 50 60Hz 24VDC Supplied AC mains transformer depends on country requirements Power Consumption 1 8 power 130W 310W 380W 600W Weight 14kg 30 8lb 19kg 41 9lb 21kg 46 3lb 22kg 48lb Dimensions 482 W x 132 H x 280 D mm 19 W x5 2 H x1 1
6. D in PA 9312 9324 9336 9348 11 PUBLIC ADDRESS POWER AMPLIFIER Service Procedures Take steps to insure the problem is not related to operator error or other products within the system Information provided in the troubleshooting portion of this manual may help with this process Once it is certain that the problem is related to the product contact your warranty provider as described in the warranty section of this manual Schematic A Schematic is available by contacting your warranty provider Parts List A Parts List is available by contacting your warranty provider Variations and Options Variations Products supplied through legitimate sources are compatible with local AC power requirements Options No optional items are available for this product Warranty 12 Warranty terms and conditions vary by country and may not be the same for all products Terms and conditions of warranty for a given product may be determined first by locating the appropriate country which the product was purchased in then by locating the product type To obtain specific warranty information and available service locations contact Inter M directly or the authorized Inter M Distributor for your specific country or region 9312 9324 9336 9348 inter Inter M Ltd Korea began operations in 1983 Since then Inter M has grown to become one of the largest manufacturers of professional audio and commercial sound electronics equ
7. position DC INPUT TERMINALS These terminals are provided for the connection of backup battery Connect a 24VDC 100A battery source to these terminals Make certain the red terminal is connected to the battery s positive side and the black terminal to the battery s negative side PA 9312 9324 9336 9348 PUBLIC ADDRESS POWER AMPLIFIER Connecting Speakers Before connecting speakers to your PA 9312 9324 9336 9348 unit be sure to disconnect the AC power cable Make certain that the total impedance is not less than the rated impedance indicated 4Q speakers connect the positive connector to 4Q terminal and the negative connectors to the COM terminal For high voltage distributed systems connect with matching transformer to the COM and either B or A terminals Be certain that the total impedance does not equal less than the rated impedance B A al al impedance and output voltage are as follows Countries USA CANADA amp Associated Version EC amp Associated JAPAN Version Impedance Low High B High A Low High B High A Output Terminals PA 9312 PA 9324 PA 9336 PA 9348 A3 8V PA 9312 9324 9336 9348 7 PUBLIC ADDRESS POWER AMPLIFIER Applications CD 3500 PP 9213 LL Ty Se NF 4 et PA 9348 CIOCIA PB 92
8. 07A MEE Jo When using connected to a power outlet of Lm la PD 9359 the only one PA 9348 must t d d connect the plug to the separate outlet block 8 PA 9312 9324 9336 9348 SPEAKER e MODEL ES 9116 PX 9116 RG 9116 EP 9216 PUBLIC ADDRESS POWER AMPLIFIER Block Diagram PA 9312 9324 ZHO9 A0ZZ INdNI OV TO 3sn4 ov MS OV 80103135 39V110A AlddNS 83MOd ZN c lt Avot AOL ASZ noor aoz vso 1n 31039 100 SNISN3S 03345 1 010 137 ana 00 3504 24 43 130 q31 NOIL93103d 2 39V110A d 1 3 15 0 13431 SWHOMOL AL 032 1 8 LNdNI 9 PA 9312 9324 9336 9348 PUBLIC ADDRESS POWER AMPLIFIER Block Diagram AlddNS 1 pe1012055y223 A0 Z A0 Z 1 vavNvo vsn AOZI 0lt 001 WOG A0ZZ INdNI OV Avet 30 35 3 ov AQL 9 AOL Nvavroa 03 52 1 ino 91039 suuoy
9. R This LED indicates the state of the amplifier s protection circuitry When the Protection LED is on illuminated the protection circuitry is active indicating that the unit is not operating normally This is typically due to overheating or power limiting Please check the Input and Output condition of the amplifier POWER LED When the unit is powered on the Power LED will glow steadily OUTPUT LEVEL INDICATOR These three LEDs indicate the amplifier s output status The 40dB LED indicates the presence of audio signal at the amplifier s output The 10dB LED indicates output at nominal operating range The red CLIP LED indicates an excessive output level Do not operate the unit with the CLIP LED continuously on illuminated POWER SWITCH Pressing this switch turns the unit on as indicated by the Power LED Pressing it again turns the unit off PA 9312 9324 9336 9348 PUBLIC ADDRESS POWER AMPLIFIER Rear Panel 1 SPEAKER OUTPUT TERMINALS These terminals are used to connect speakers to the unit You may select either 4Q or 8Q conventional operation or High Impedance operation at either 70V 100V Make certain the combined impedance of the speakers is equal to or higher than the rated output impedance of the amplifier The impedance and output voltage are as follows Countries USA CANADA amp Associated Version EC amp Associated JAPAN Version foe 25V 70V PA 9312 5 20 420 9324 2 60 210
10. ate normally or has been dropped 0c RON 2 9312 9324 9336 9348 PUBLIC ADDRESS POWER AMPLIFIER Features HIGH POWER LOW DISTORTION 120W 9312 240W 9324 or 360W PA 9336 of RMS power with less than 1 THD 480W PA 9348 of RMS power with less than 5 THD BALANCED INPUT Balanced XLR inputs to reduce ground hum and increase efficiency GAIN ADJUSTMENT Input gain is adjustable from 124 to OdB via rear panel control EMERGENCY BATTERY BACKUP Emergency battery backup for unexpected AC power failure SLIM DESIGN COMPACT SIZE Streamlined design fits in a compact 3RU space Accessories One detachable AC power cord and XLR cord are provided for use with this product Operation Make certain that speakers and input sources are properly connected before switching on Keep volume levels turned down before switching on NOTE The system s operation is delayed by approximately three seconds after pressing the power switch This is due to the built in protection circuitry designed to protect speakers and other system components PA 9312 9324 9336 9348 3 PUBLIC ADDRESS POWER AMPLIFIER Front Panel 4 1 VENTS These vents provide cool air flow into the unit It is important to keep them free of obstructions to prevent the unit from overheating It is also important to operate the unit in a dust free environment PROTECTION INDICATO
11. ipment in the world Inter M has gained worldwide recognition for its own branded products as well as private label manufacturing of electronics sold under other names OEM The company is no longer just a Korean company but rather a global company that is truly international in scope with factories and offices in Korea and China and sales and marketing operations located in Japan Europe and the U S A With more than 850 employees around the globe Inter M is well poised for further growth and expansion INTER M AMERICAS INC 1 EAST BEACON LIGHT LANE CHESTER PA USA 19013 4409 TEL 1 610 874 8870 FAX 1 610 874 8890 Home Page http www inter m net E mail service inter m net INTER M Corporation SEOUL OFFICE 653 5 BANGHAK DONG DOBONG KU SEOUL KOREA TEL 82 2 2289 8140 8 FAX 82 2 2289 8149 Home Page http www inter m com E mail export inter m com MADE IN KOREA April 2006 9000000420
12. ucts We sincerely trust this product will provide years of satisfactory service but if anything is not to your complete satisfaction we will endeavor to make things right Welcome to Inter M and thank you for becoming part of our worldwide extended family This symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient RISK OF ELECTRIC SHOCK magnitude to constitute a risk of electric shock to DO NOT OPEN persons This symbol is intended to alert the user to the presence of important operation and maintenance DO NOT REMOVE COVER OR BACK ae in the literature accompanying CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK NO USER SERVICEABLE PARTS INSIDE Caution To prevent electric shock do not use this polarized plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Attentions Pour pr venir les chocs lectriques ne pas utiliser cette WARNING fiche polaris e avec un prolongateur une prise de courant on une autre sortie de courant sauf si les lames peuvent To prevent fire or shock hazard do not tre ins r es fond sans en laisser aucune partie d couvert expose the unit to rain or moisture not install this equipment in a confined space such as a book case or similar unit
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