Model 112 Stereo Power Amplifier Owner’s Manual Model 112 Stereo Power Amplifier Owner’s Manual
Introduction W elcome to the Jeff Rowland Design Group “family” and congratulations on your purchase of what is J eff Rowland Design Group, Inc. unquestionably one of the world’s finest audio power amplifiers.
Product Features • XLR input connectors for balanced (Differential Mode) system • Standby power condition reduces warm-up time. configuration. • Fail-safe operation provided by user-resetable thermal circuit • 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.
Contents Model 112 Stereo Power Amplifier AC Power Cable Warranty Warranty Card
Initial Inspection Contents I nspect E nsure that all of the auxiliary components listed below are enclosed the shipping container for damage. If the shipping container, packing material, amplifier, or accessories are damaged or missing, notify your dealer and the shipper (if a claim is to be made) immediately. Note: Many shippers require notification and inspection within twenty-four hours of delivery to determine the nature of damages incurred.
Care, Cleaning, and Maintenance PUSH NEUTRIK PUSH NEUTRIK
Care T he Model 112 Stereo Power Amplifier is finely constructed from pieces of solid aluminum. The surface of the unit is cut in a unique process that uses a diamond tipped blade. This process was refined over many years to produce an artistic and attractive finish. The front, top, bottom and side panels are then finished with fine automobile polyurethane clear coat after a light anodizing to preserve the clarity of the finish and are not raw or exposed metal. based furniture polish.
Amplifier Front and Rear Panel Function Controls Standby/Power Button PUSH NEUTRIK PUSH NEUTRIK Right Channel Input Select Switch Power Indicator LED Left Channel Input Select Switch
Amplifier Front and Rear Panel Function Controls B 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. Front Panel Rear Panel 1 FRONT PANEL STANDBY/POWER BUTTON: Press this button to (Note: If desired, the switch described below can be switched while the amplifier is operational and playing music.) operate the amplifier.
Rear Panel Power Connections Amplifier Rear Panel PUSH NEUTRIK PUSH NEUTRIK AC Power Cable Connector Volts AC Indicator
Installation Rear Panel Power Connections Connections L ocate the amplifier as close as possible to its final installation point. Important: Please strictly follow the steps in order as outlined below 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.
Signal Connections and Remote Input Select Switch Unbalanced Input Connector Amplifier Rear Panel 12V Remote Connector PUSH NEUTRIK PUSH NEUTRIK Balanced Input Connector Speaker Output
Signal Connections Remote T he Model 112 Stereo Power Amplifier offers unprecedented 1 A 12V REMOTE ON/OFF mini-plug connector is provided on the compatibility with associated audio components. When 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).
Internal Function Controls Overall Gain DC Protection System T he overall gain of the Model 112 Stereo Power Amplifier can be The Model 112 Stereo Power Amplifier can produce high power levels that, without well-designed protection circuitry, could damage your loudspeakers and is equipped with a circuit that protects the amplifier from DC current emitted by source components. This system also prevents amplification of DC currents that can damage your loudspeakers.
Model 112 Stereo Power Amplifier Specifications Specifications Output Power: Continuous RMS watts @ 8 ohms @ 4 ohms 150 watts 275 watts Power Bandwidth: DC to 160 kHz, -3 dB Slew Rate: 30 volts/microsecond THD + Noise: <.
Basic Troubleshooting A summary of fault conditions and their causes and remedies are listed below. 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.
Additional Information I 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.
Post Office Box 7231 Colorado Springs, Colorado 80933 USA
