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JEFF ROWLAND 112 Owner's Manual

Jeff rowland design group stereo amplifier owner's manual 112
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Model 112
Stereo Power Amplifier
Owner's Manual
Model 112
Model 112
Stereo Power Amplifier
Stereo Power Amplifier
Owner's Manual
Owner's Manual

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  Summary of Contents for JEFF ROWLAND 112

  • Page 1 Model 112 Stereo Power Amplifier Owner’s Manual Model 112 Model 112 Stereo Power Amplifier Stereo Power Amplifier Owner’s Manual Owner’s Manual...
  • Page 2 Introduction Introduction elcome to the Jeff Rowland Design Group “family” and congratulations on your purchase of what is unquestionably one of the world’s finest audio power amplifiers. numerous function control and interconnect possibilities, precision electronic circuitry, and accurately machined chassis components throughout, your Model 112 Stereo Power Amplifier will offer you many years of musically satisfying enjoyment.
  • Page 3: Product Features

    Product Features Product Features XLR input connectors for balanced (Differential Mode ) system configuration. RCA input Connectors for unbalanced system configurations. Selectable overall gain of 26 or 32 dB. User selectable switching between balanced and unbalanced connections. 12V remote ON/OFF power switching connector. Automatic temperature stabilizing circuitry maintains constant operating temperature.
  • Page 4 Contents Contents AC Power Cable AC Power Cable Model 112 Stereo Model 112 Stereo Power Amplifier Power Amplifier Warra Warranty Card nty Card...
  • Page 5: Initial Inspection

    Note: Many shippers require notification and inspection within twenty-four hours of delivery to determine the nature of damages incurred. Your Model 112 Stereo Power Amplifier has undergone extensive performance evaluations, listening tests, quality control inspections, and a minimum seventy-two hour burn-in period prior to shipment and should therefore be in perfect operating condition upon receipt.
  • Page 6: Care, Cleaning, And Maintenance

    Care, Cleaning, and Maintenance Care, Cleaning, and Maintenance...
  • Page 7: Maintenance

    If you have any questions about the treatment or cleaning of your Model 112 amplifier, please contact your dealer or the Jeff Rowland Design Group factory before attempting to clean the chassis. The...
  • Page 8 Amplifier Front and Rear Panel Function Controls Amplifier Front and Rear Panel Function Controls Standby/Power Button Standby/Power Button Right Channel Input Right Channel Input Select Switch Select Switch Power Indicator LED Power Indicator LED Left Channel Input Left Channel Input Select Switch Select Switch...
  • Page 9 Amplifier Front and Rear Panel Function Controls Amplifier Front and Rear Panel Function Controls efore attempting any system interconnection, please familiarize yourself with the front and rear panel controls of the Model 112 Stereo Power Amplifier. The descriptions below refer to the diagrams above.
  • Page 10: Ac Power Cable Connector

    Rear Panel Power Connections Rear Panel Power Connections AC Power Cable AC Power Cable Connector Connector Amplifier Rear Panel Volts AC Volts AC Indicator Indicator...
  • Page 11: Installation

    Allow access to the rear panel for making connections. The Model 112 Stereo Power Amplifier is convection cooled, eliminating the need for fan or forced-air cooling. When operating, the chassis should have at least two (2) inches of air space around the heatsink areas.
  • Page 12: Balanced Input Connector

    Signal Connections and Remote Signal Connections and Remote Input Select Input Select Switch Switch Balanced Input Balanced Input Connector Connector Amplifier Rear Panel 12V Remote 12V Remote Connector Connector Unbalanced Unbalanced Input Connector Input Connector Speaker Speaker Output Output...
  • Page 13: Signal Connections

    Signal Connections Signal Connections he Model 112 Stereo Power Amplifier offers unprecedented compatibility with associated audio Connecting or disconnecting speaker or interconnect cables, it is necessary to place the amplifier in Standby mode (orange POWER INDICATOR LED on the front panel OFF).
  • Page 14 Overall Gain Overall Gain he overall gain of the Model 112 Stereo Power Amplifier can be adjusted between 26 dB and 32 dB. The setting from the factory is 26 dB, which is adequate for the majority of applications, though in a small number of situations involving low efficiency systems the higher gain setting may be necessary.
  • Page 15 Model 112 Stereo Power Amplifier Specifica Model 112 Stereo Power Amplifier Specifications Output Power: Output Power: Continuous RMS watts @ 8 ohms 150 watts @ 4 ohms 275 watts Power Bandwidth: Power Bandwidth: DC to 160 kHz, -3 dB Slew Rate:...
  • Page 16: Basic Troubleshooting

    The Model 112 Stereo Power Amplifier can produce high power levels that, without well-designed protection circuitry, could damage loudspeakers. Therefore, most fault conditions will result in the Model 10 reverting into Standby Mode.
  • Page 17: Additional Information

    Additional Information f you have any additional questions regarding the installation or operation of the Model 112 Stereo Power Amplifier, please contact your authorized Jeff Rowland Design Group dealer or check the Jeff Rowland Design Group web site at http://www.jeffrowland.com.
  • Page 18 Post Office Box 7231 Colorado Springs, Colorado 80933 USA...