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Inter-m PU-103 Operation Manual

Public address mixing amplifier
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Operation Manual
Public Address Mixing Amplifier
PU 103/106/112

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Summary of Contents for Inter-m PU-103

  • Page 1 Operation Manual Public Address Mixing Amplifier PU 103/106/112...
  • Page 2 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 products.

  • Page 3: Table Of Contents

    Environment............................2 Important Safety Instructions......................2 Overview ............................3 Features ............................3 Contents and Accessories ......................4 Operation ............................4 Front Panel ............................5 Rear Panel ............................7 Applications ..........................11 Block Diagram ..........................13 Specifications ..........................14 Service Procedures............................16 Schematic.............................16 Parts List ............................16 Variations and Options .......................16 Warranty ............................16 PU-103/106/112...

  • Page 4: Unpacking

    PUBLIC ADDRESS MIXING AMPLIFIER Unpacking Unpacking Although your PU-103/106/112 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.

  • Page 5: Overview

    Easy to install and operate with compact design of 1U size and functions. - DIGITAL AMPLIFIER CIRCUIT Take up the Digital Amplifier Circuit with High efficiency of the rated power PU-103: 30W, PU-106: 60W, PU- 112: 120W), High reliability, low weight and low temperature.

  • Page 6: Contents And Accessories

    4. Please push the power switch, then the power input led is on and the unit will be operated. 5. Please use your own with adjustment the volume using each input volume and master volume, the tone using the tone control. PU-103/106/112...

  • Page 7: Front Panel

    - When LED is turned on (by pressing the button once): Those files stored in the folder with currently playing audio file are played repeatedly. - When LED blinks (by pressing the button twice): Only the currently playing audio file is played repeatedly. ※ You cannot activate the RANDOM and REPEAT simultaneously. PU-103/106/112...
  • Page 8 This controls the main output level. Turn the master volume clockwise to increase volume. 7. POWER SWITCH, POWER LED It is a power supply switch. After connecting the power cord on the back of the equipment, press the switch to supply power to the equipment and turn on the power LED (Blue). PU-103/106/112...

  • Page 9: Rear Panel

    Priority mute control volume adjusts the output level on INPUT 2~3. 4. INPUT 2 TERMINAL This terminal is for such devices as microphone, computer, CD player, and DVD player. Please refer to the following picture about the suitable cables. 6.3ø phone Jack. PU-103/106/112...
  • Page 10 7. SPEAKER OUTPUT TERMINAL This is the terminal for speakers. 4Ω(8Ω), 70V, 100V cannot be used at the same time. Make certain that the total impedance is not less than the rated impedance indicated. It may cause overload and malfunction. PU-103/106/112...
  • Page 11 PUBLIC ADDRESS MIXING AMPLIFIER ※ Connecting Speakers Before connecting speakers to PU-103/106/112 unit, be sure to disconnect the AC power cable. - FOR 100V TERMINAL - FOR 70V TERMINAL ※ IMPEDANCE ※ IMPEDANCE SELECTION SWITCH ON SELECTION SWITCH ON PU-103 : 333Ω...
  • Page 12 1~3 falls when signal is present on TEL IN. TEL IN mute control volume adjusts the level of output falling on INPUT 1~3. 12. AC POWER CORD This is the AC cord for connecting power. Do not bend, pull, twist, heat and cut by force. It may cause electric shock. PU-103/106/112...

  • Page 13: Applications

    INTERFACE MUTE LOW IMPEDANCE SPEAKER (PU-103/106 : 8Ω) (PU-112 : 4Ω) ※ You have to select one between 4Ω/8Ω and High voltage output. You never use both 4Ω/8Ω with High voltage output at the same time. Please use only one output terminal.
  • Page 14 70V / 100V is connected together. Be careful not to use more than 2 kinds of speakers at the same time. MUTE HIGH IMPEDANCE SPEAKER (70V, PU-103: 166Ω, PU-106: 82Ω, PU-112: 41Ω) (100V, PU-103: 333Ω, PU-106: 167Ω, PU-112: 84Ω) PU-103/106/112...

  • Page 15: Block Diagram

    PUBLIC ADDRESS MIXING AMPLIFIER Block Diagram Block Diagram PU-103/106/112...

  • Page 16: Specifications

    PUBLIC ADDRESS MIXING AMPLIFIER Specifications Specifications PU-103 PU-106 PU-112 15.5V(8Ω) 21.9V(8Ω) 21.9V(4Ω) Rated Output Power (1kHz, THD 1%) 70V(166Ω) 70V(82Ω) 70V(40.83Ω) 100V(333Ω) 100V(167Ω) 100V(83.33Ω) 55dB RCA, 6.35 PHONE JACK 55dB LINE, TEL IN 55dB MIC (BALANCE) -60dBV /2kΩ LINE (BALANCE) -20dBV /2kΩ...
  • Page 17 PUBLIC ADDRESS MIXING AMPLIFIER ※ DIMENSIONS PU-103/106/112...

  • Page 18: Service

    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.
  • Page 20 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 equipment 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).

This manual is also suitable for:

Pu-106Pu-112

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