Inter-m R-150 Operating Manual
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Inter-m R-150 Operating Manual

Reference series amplifier
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R-150/R-300/R-500
Reference Series Amplifier
Copyright 2004 Inter-M Corporation

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Summary of Contents for Inter-m R-150

  • Page 1 R-150/R-300/R-500 Reference Series Amplifier Copyright 2004 Inter-M Corporation...

  • Page 2: Table Of Contents

    Welcome ... 3 Unpacking ... 3 Warnings ... 3 Operation... 5 Features ... 6 Front Panel Controls... 7 Operational Modes ... 11 Speaker Impedance and Connections ... 11 Speaker Connection Procedures... 12 Speaker Cable ... 13 Maintaining Proper Polarity ... 13 Rack Mounting Your Amplifier ...

  • Page 3: Welcome

    A personal welcome to you from the management and employees of Inter-M Thank you for purchasing this fine Inter-M product. All of us here at Inter-M are dedicated to providing you with the highest quality products and the best value.
  • Page 4 R-150/R-300/R-500 Reference Series Amplifier 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other devices (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.

  • Page 5: Operation

    R-150/R-300/R-500 Reference Series Amplifier Operation Make certain that speakers and input sources are properly connected before switching AC Mains power on. Keep volume levels at minimum gain before switching on. NOTE: The system’s operation is delayed by approximately three seconds after pressing the AC Mains power switch.

  • Page 6: Features

    Power Amplifier Features High Performance Monitor Amp • Studio quality monitor amp provides clean sound for the studio, conference room, concert hall and commercial installations. Advanced Protection Circuitry • Thermal and current overload protection, short and open circuit protection, power- on delay, for component and loudspeaker protection.

  • Page 7: Front Panel Controls

    Front Panel Controls 1. Power Switch Pushing this switch up swiches the unit on. Pushing it down swiches the unit off. 2. Power Indicator LED When the unit is switched on, the Power LED will glow steadily. 3. Protection Indicators There are two protection indicator LEDs –...
  • Page 8 4. Input Attenuators These are detented controls for regulating each channel’s input level. Clockwise rotation increases gain. 5. Handles Use these handles to easily move the amplifier. 6. Clip Indicators The red CLIP LED indicates an excessive output level, lighting when distortion reaches approximately 1%.

  • Page 9: Rear Panel Controls

    Rear Panel Controls 1. Speaker Output Terminals These five-way binding posts and speaker connect jacks are used to connect speakers to the unit. Speakers may be connected in Stereo or Bridged Mono mode. Please refer to the illustrations below. When connecting speakers in Bridged Mono mode, use the Channel 1 “+“...
  • Page 10 4. Input Connectors Balanced input connectors are provided on XLR jacks, while unbalanced connections can be made using the 1/4” phone jacks. (When operating in Bridged Mono mode, only Channel 1 input is active.) 5. Heat Sink Heat is emitted via the external HEAT SINK when the amplifier is switched on. When the amplifier is rack mounted, we recommend that you keep the rear of the rack open in order to release heat.

  • Page 11: Operational Modes

    In Bridged Mono mode, both amplifier channels are bridged together and function as a single-channel amplifier. Only the Channel 1 input is active, and only the Channel 1 Input Attenuator controls the amp’s output. In this mode, minimum speaker impedance per channel is 8Ω.

  • Page 12: Speaker Connection Procedures

    Make certain the wires do not protrude from the terminals and touch the amplifier’s chassis, or an adjacent terminal. The R-150/R-300/R-500 is capable of very high output levels. Be certain to use a speaker system that can accept high input levels. If the input capacity of your speaker system is less than the amplifier’s rated output, you may protect your speakers by connecting a...

  • Page 13: Speaker Cable

    R-150/R-300/R-500 Reference Series Amplifier Speaker Cable Always use the heaviest-duty (lowest gauge) speaker cable available. The terminals can accommodate very thick speaker cable. Maintaining Proper Polarity It is very important to wire your speaker connectors consistently at each end of each cable, in order to maintain proper polarity.

  • Page 14: Block Diagram

    R-150/R-300/R-500 Reference Series Amplifier Block Diagram...

  • Page 15: Specifications

    Frequency Response ( ± 0.5dB) Input Sensitivity Input Impedance T.H.D Damping Factor Slew Rate Protection GENERAL Power Source Power Consumption R-150 R-300 R-500 Weight R-150 R-300 R-500 Dimensions R-150/R-300 R-500 Specifications and design subject to change without notice for improvements.
  • Page 16 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.

This manual is also suitable for:

R-500R-300

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