User manual JEFF ROWLAND MODEL 10

[. . . ] Fail-safe operation provided by user-resetable thermal circuit breakers located on power supply rear panel. · Quiet, transient-free operation during power and function mode switching. · · 12V remote ON/OFF power switching connector. Automatic temperature stabilizing circuitry maintains constant operating temperature. · Automatic input muting under anomalous input or output operating conditions. · CE approved speaker output connectors requiring no tools for tight connections. · Fully-balanced Differential ModeTM circuit topology implemented from input to output. · Separate power supply featuring 2nd generation high-speed switch mode circuit design. · Low resonance, structurally integrated chassis constructed of precision-machined aircraft grade aluminum. Features Contents Model 10 Amplifier Section Section Model 10 Power Supply DC Power Supply Cable AC Power Cable Warranty Card Initial Inspection I nspect 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. [. . . ] · Please allow the unit to cure for 6 months before attempting to clean it. This will prevent small scratches from marring the surface before the surface coating has had a chance to harden completely. The top cover, sides, and bottom cover can all be cleaned with a soft cotton cloth (such as an optical lens cleaning cloth or fine furniture polishing rag) dampened with plain water. If a mark has been left on the chassis, do not use any type of abrasive or chemical cleaner to remove the mark. A very mild plastic or glass cleaner that does not contain ammonia should be tried only as a last resort. Please contact the factory before trying any type of cleanser on the chassis other than water to clean the unit. The front panel of the unit should never be cleaned with anything other than a very soft cotton cloth and plain water or fine oil- Maintenance Maintenance A ll Jeff Rowland Design Group products are designed to provide a · lifetime of enjoyment and listening pleasure. The chassis is sealed to prevent dust from entering and the interior of the chassis should not need cleaning during the lifetime of the product. All internal circuitry is self-adjusting or stable so no adjustments or maintenance of any kind should be necessary over a lifetime of normal operation. If the amplifier is ever in need of service, updating, or upgrading, it should only be returned to an authorized repair facility or technician for servicing. It is not recommended that the customer attempt to disassemble or repair the unit and doing so may void your warranty. · Care Amplifier Front and Rear Panel Function Controls Amplifier Front Panel Standby/Power Button Power Indicator LED Amplifier Rear Panel Right Channel Input Select Switch NEUTRIK NEUTRIK PUSH Left Channel Input Select Switch PUSH 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 10 Stereo Power Amplifier. The descriptions below refer to the diagrams above. Front Panel 1 FRONT PANEL STANDBY/POWER BUTTON: Press this button to Rear Panel (Note: If desired, the switch described below can be switched while the amplifier is operational and playing music. ) operate the amplifier. The small orange POWER INDICATOR LED will illuminate when the amplifier is operational. When the POWER INDICATOR LED is not illuminated, all amplifier inputs are muted and internal circuitry reverts to power-saving (Standby) mode. Anomalous operating conditions will place the amplifier in Standby mode and will prevent the amplifier from being switched back on again until such a condition is eliminated. To avoid spurious noises, the amplifier should never be turned on if the inputs on the rear panel are not connected. Note: All ON/OFF power switching should be initiated ONLY with this button. The amplifier should never be disconnected from AC power without first placing the amplifier in Standby mode. 1 INPUT SELECT SWITCH: This switch selects either the unbalanced RCA inputs or the balanced XLR inputs. Note: When the RCA position is selected, pin 2 of the XLR is shorted to pin 1. Control Functions Rear Panel Power Connections Amplifier Rear Panel DC Power Supply Cable Connector NEUTRIK NEUTRIK PUSH PUSH Volts AC Indicator AC Power Cable Connector Power Supply Rear Panel Installation L ocate the amplifier as close as possible to its final installation point. Rear Panel Power Connections Important: Please strictly follow the steps in order as outlined below before operating your Model 10 Stereo Power Amplifier. Allow access to the rear panel for making connections. The Model 10 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. Multiple chassis can be stacked vertically, facilitating an upward flow of warm air currents throughout the vertical heatsink areas. This upward flow must not be blocked or recirculated around the chassis if proper cooling is to be maintained. 1 Verify that the VOLTS AC input identified on the rear panel near the AC input socket is the same as the AC mains voltage in your area. [. . . ] 32. 6 kg Continuous RMS watts @ 8 ohms @ 4 ohms Power Bandwidth: Slew Rate: THD + Noise: Noise: Damping Factor: Gain (1 watt, 8 ohms): Input Impedance: Common Mode Rejection Ratio: Absolute Phase: Inputs: Outputs: Amplifier Section Dimensions: Amplifier Section Weight: Power Supply Dimensions: Power Supply Weight: Shipping Dimensions: Shipping Weight: >80 dB, 20 ­ 20 kHz Phase-Inverted Internal Control & Specifications Basic Troubleshooting A summary of fault conditions and their causes and remedies are listed below. The Model 10 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. Condition: Front panel POWER INDICATOR LED does not illuminate after pressing POWER/STANDBY BUTTON, amplifier does not operate normally: Cause: Incorrect power connections, incorrect speaker connections, or circuit breaker must be reset. Abnormal Operation of the Model 10 internal circuitry. Remedy: Reset circuit breaker, review Installation and Rear Panel Connections section of Owner's Manual. Identify and correct abnormal conditions such as low frequency rumble and/or acoustic feedback caused by phono playback (if applicable). [. . . ]