PAM-240/360 Public Address Amplifier

PAM-240/360 Public Address Amplifier PAM-240 PUBLIC ADDRESS AMPLIFIER CLIP 0-6 -8-11 -14-19 PROT CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 CHANNEL 6 BASS TREBLE MASTER CHIME SP 1 SP 2 SP 3 SP 4 SP 5 ALL POWER db db db db SPEAKER SELECTOR ON OFF

Contents 1. Unpacking and Installation...1 2. Features...2 3. Front Panel Controls...3 4. Rear Panel Controls...4 5. Installation of The Speaker...7 6. Applications...8 7. Block Diagram...9 8. Specifications...10 OFFICE : 653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREA TEL : 82-2-2289-8140~8, FAX : 82-2-2289-8144 Home Page : http://www.inter-m.com E-mail : export@inter-m.com

Unpacking and Installation Although it is neither complicated to install nor difficult to operate your Public Address Amplifier, a few minutes of your time is required to read this manual for a properly wired installation and becoming familiar with its many features and how to use them. Please take a great care in unpacking your set and do not discard the carton and other packing materials. They may be needed when moving your set and are required if it ever becomes necessary to return your set for service. Never place the unit near radiator, in front of heating vents, to direct sun light, in excessive humid or dusty location to avoid early damage and for yours of quality use. Connect your complementary components as illustrated in the following page. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 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 magnitude to constitute a risk of electric shock to persons. CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK. DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. Caution: This symbol is intended to alert the user to the presence of important operation and maintenance (servicing) instructions in the literature accompanying the appliance. 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. WARNING To prevent fire or shock hazard, do not expose the unit to rain or moisture. Attentions: Pour prévenir les chocs électriques ne pas utiliser cette fiche polarisée avec un prolongateur, une prise de courant on une autre sortie de courant, sauf si les lames peuvent étre insérées à fond sans en laisser aucune partie à découvert. PAM-240/360 1

Features - MODULAR AMPLIFIER This AMP is perfect for applications requiring High Reliability, Excellent Audio Quality. Units assemble in any configuration, AMP+Tuner, AMP+CD (Deck), AMP+Tuner+CD (Deck), utilizing modules. - INPUT GAIN CONTROLS This system controls input gain in rear panel input gain volume per CH, you can use conveniently. - SPEAKER SELECT 6 speaker selector switches are provided to enable you to select 5 speakers individually or totally. - CHIME WITH FOUR TONES You can conveniently use four tone chime before the announcement. - MUTING FOR PRIORITY CH1, 2, CHIME and TELEPHONE have priority to the others signal. - TELEPHONE INPUT/MUSIC-ON HOLD To connect with the telephone system, the function of TELEPHONE INPUT and MUSIC-ON HOLD are provided (MUSIC-ON HOLD is only for PAM-Tuner). - REMOTE CONTROL SYSTEM Speaker zone can be selected and chime operated by remote amplifier. 2 PAM-240/360

Front Panel Controls 1 2 3 PAM-240 PUBLIC ADDRESS AMPLIFIER CLIP 0-6 -8-11 -14-19 PROT CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL 5 CHANNEL 6 BASS TREBLE MASTER CHIME SP 1 SP 2 SP 3 SP 4 SP 5 ALL POWER db db db db SPEAKER SELECTOR ON OFF 9 8 7 6 5 4 1. DECK, CD PLAYER OR TUNER OPTION This Panel is used to connecting the DECK, CD player or TUNER. *Connection of option is provided the connector of internal unit. 2. PROTECTION INDICATOR This LED indicates the condition of the protection circuit. When the protection LED is ON the amplifier is not operating normally (overheating and limiting), please check the INPUT/OUTPUT condition of the amplifier. 3. OUTPUT LEVEL DISPLAY This display indicates the output level (RMS). 4. POWER SWITCH Pressing this switch to ON will make the power indicating LED ON and supply the power to this unit. 5. SPEAKER SELECTOR These switches are used for connecting the output of amplifier to the speakers individually or totally. 6. CHIME BUTTON Pressing this button will activate 4 tone chime circuitry. 7. MASTER VOLUME This control is used for adjusting the volume of finally mixed sound. 8. TONE CONTROL Each frequency level is adjusted to ±12dB by the 2 controls from 100Hz to 10kHz. 9. CH1~CH6 VOLUME These volume adjust the level of CH1~CH6. PAM-240/360 3

Rear Panel Controls 1 2 3 4 5 6 SPEAKER SELRCTOR SP 5 SP 4 SP 3 SP 2 SP 1 S N PRIORITY PRIORITY 19 COM IMPEDANCE SELECTOR 100V 70V FM COM AM W/MIC W/MIC LINK OUT LINK IN EXT CHIME EXT MUTE TEL IN MUSIC ON HOLD ANT B ANT A 18 17 ~AC INPUT AC FUSE REMOTE PREAMP OUT AMP IN CH 6 CH 5 CH 4 CH 3 CH 2 CH 1 16 15 13 14 12 11 10 9 8 7 1. SPEAKER OUTPUT TERALS These terminals are for connection of speaker lines to deliver output to speakers. Impedance (voltages) of 70V and 100V are provided for convenience. In any case, use the speakers whose combined impedance is equal to or higher than the rated output impedance of amplifier. Model 70V 100V PAM - 240 20.4 Ω 41.4 Ω PAM - 360 13.6 Ω 27.8Ω 2. IMPEDANCE SELECTOR SWITCH This switch is for selecting the impedance. PAM-240: 41.4Ω (100V) or 20.4Ω (70V) PAM-360: 27.8Ω (100V) or 13.6Ω (70V) 3. ANTENNA(OPTION) This terminal is for connecting the antenna terminal, when you can use the Tuner (Our Model PAM- TUNER). 4. EQ CONTROL The equalizer section provides ±12dB of control over high, mid and low ranges at the following frequencies. : 10kHz, ±12dB : 1kHz, ±12dB : 100Hz, ±12dB 5. POWER SWITCH This switch turns on/off the phantom power supply for all channels. Use this switch when you are using condenser microphones. When this switch is turned on, DC +24V will be supplied to pins 2 and 3 of each INPUT jack. 4 PAM-240/360

If you do not need phantom power, be sure to leave this turned off. * It is safe to connect balanced dynamic microphones or line level devices even if this switch is left on, but connecting unbalanced devices or devices whose transformers are center-grounded will cause hum or malfunctions. 6. PRIORITY SWITCH This switch have priority to the others channels. 7. INPUT GAIN CONTROL According to the input signal source, adjust adequately these gain controls not to exceed input sensitivity. When the input level exceed the rated sensitivity, output signal of amplifier could be distorted and overloaded. Gain adjusting range of these volumes are 44dB, and general position of the volume is as following. MIC (Microphone)...-50 ~ db MIC ATT (Electric Guitar)...-30 ~ -50dB AUX (Deck, Tuner, etc.)...-20 ~ -30dB 8. CH1~CH6 INPUT JACK These are input terminals which is designed electrical balanced circuitry. Optionally, transformer balanced circuitry is optional per buyer s order. 9. LINK IN JACK To the expansion of input channels, this jack is provided to connect with the output terminal of external mixer. 10. AMP IN JACK This jack is for connecting the external signal input. If plug is inserted on this jack, mixed signal of all input is not connected to main amplifier, and only amp in signal is connected. 11. PRE AMP OUT JACK This jack is for connecting the preamp out signal to external effect derive or external musical instrument. If the plug is inserted on this jack mixed signal of all input is not connect to main amplifier and only amp in signal is connected. 12. LINK OUT JACK This jack is used to connecting the same kinds amp of this unit and record in of deck. 13. AC FUSE HOLDER This fuse holder contain AC fuse. When fuse is blown out, it should be replaced with the same type just like following page. If it continues to blow, stop replacing fuse and refer servicing to qualified personnel. Model Voltage AC 100V/120V AC 230V-240V PAM-240 6.3A/250V 4A/250V PAM-360 8A/250V 4A/250V PAM-240/360 5

14. REMOTE CONTROL INPUT JACK You can use conveniently Remote Control(Speaker zone can be selected and Chime can be operated) through the DIN jack(13 pin) Pin 1 : remote amplifier input signal hot(+) Pin 8 : remote control 5(SP 5) Pin 2 : remote amplifier input signal cold(-) * REMOTE AMPLIFIER OPTION 15. MUSIC-ON HOLD (PAM-TUNER ONLY) These terminals are for connecting to the telephone system. NOTE: When the tuner is turned on, the tuner output signal is always supplied these terminals and is not concerned with master volume and tuner volume. Also, you can adjust to input level by the volume of internal unit. 16. TELEPHONE IN TERAL These terminals are to be connected to telephone exchange system for paging. NOTE: When there are paging signal through this terminal, all other input signals except AMP IN are muted. Also, you can adjust to input level by the volume of internal unit from 200mV to 1V. 17. AC INLET This terminal is connected AC input cord. Pin 9 : remote control ground Pin 3 : signal ground Pin 10 : DC +24V Pin 4 : remote control 1(SP 1) Pin 5 : remote control 2(SP 2) Pin 6 : remote control 3(SP 3) Pin 7 : remote control 4(SP 4) Pin 11 : ground Pin 12 : chime input signal Pin 13 : chime ground 18. EXT MUTE When these two terminals are shorted, the signals from CH3 to CH6, tuner and turntable are muted, and the signals from CH1, CH2, LINK IN and CHIME are not muted. You can use these terminal for remote control. 19. EXT CHIME When these terminals are shorted, the circuitry of 4 tone chime is activated. Also you can use these terminal for remote controls. 6 PAM-240/360

Installation of the Speakers When you connect the speaker, remove the power cord from AC outlet. And use the suitable terminals connecting way as belows. Be sure that total impedance is not less than rated impedance. CONNECTING IMPEDANCE SPEAKERS High-Impedance speakers in parallel that support 70V or 100V line output, you can connect speakers with a total rated input up to 240W(PAM-240) or 360W(PAM-360) SPEAKER SELECTOR SP 5 SP 4 SP 3 SP 2 SP 1 10W 10W 10W 10W COM Total rated input of up to 240W(PAM-240) or 360W(PAM-360) For example, if you are using speakers with a rated input of 15W, you can connect up to twenty four speakers, as shown below. SPEAKER SELECTOR SP 5 SP 4 SP 3 SP 2 SP 1 15W 15W 15W 15W COM 15W X 24 units(360w) * Warning: Extreme care must be exercised when connecting to these terminals as potentially hazardous voltages may be present. * Do not install this equipment in a confined space such as a book case or similar unit is enough. PAM-240/360 7

ON ON PUBLIC ADDRESS AMPLIFIER Applications FM ANTENNA EARTH AM OUTDOOR ANTENNA OTHER AMP AND SOURCE SPEAKER SPEAKER SELRCTOR SP 5 SP 4 SP 3 SP 2 SP 1 S N PRIORITY PRIORITY IMPEDANCE SELECTOR COM 100V 70V FM COM AM W/MIC W/MIC LINK OUT LINK IN EXT EXT TEL MUSIC CHIME MUTE IN ON HOLD ANT B ANT A ~AC INPUT AC FUSE REMOTE PREAMP OUT AMP IN CH 6 CH 5 CH 4 CH 3 CH 2 CH 1 REMOTE AMPLIFIER MIC CHIME MIC REEL DECK MUTE CASSETTE DECK ELECTRIC GUITAR AUDIO MIXER ELECTRONIC ORGAN 8 PAM-240/360

Block Diagram CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 PAM-240/360 9

Specifications...0dB=0.775Vrms - AMPLIFIER SECTION Rated Output Power (THD 1%)...PAM-240: 240W (RMS)...PAM-360: 360W (RMS) Frequency Response...80Hz 20kHz T.H.D (at 1kHz Half Power Output)...Less than 1% S/N...Better than 95dB Input Sensitivity/Impedance CH 1~CH 6... 1mV~160mV/600Ω Link In... 100mV/15kΩ Telephone In...0.775V/600Ω Amp In...1V/20kΩ Remote In...1.2V/20kΩ Speaker Output/Impedance PAM-240...240W: 70V/20.4Ω, 100V/41.4Ω PAM-360... 360W: 70V/13.6Ω, 100V/27.8Ω Pre Amp Out/Impedance...1V/600Ω Music On Hold/Impedance...0.775V/600Ω Link Out/Impedance...500mV/600Ω Tone Control (100Hz, 10kHz)...±12dB EQ Control (100Hz, 1kHz, 10kHz)...±12dB - GENERAL Power Source...AC 110V 240V, 50/60Hz Power Consumption...PAM-240: 240W...PAM-360: 300W Weight...PAM-240: 11kg...PAM-360: 13kg Dimensions...420(W) 132(H) 360(D)mm * Specifications and design subject to change without notice for improvements. 10 PAM-240/360

MADE IN KOREA 9007979410