User manual JEFF ROWLAND CONSUMMATE

[. . . ] CONSUMMATE PREAMPLIFIER OWNER'S MANUAL Version II TABLE OF CONTENTS Introduction Initial Inspection Features Installation Impedance Adjustments Preamplifier Internal View Impedance Adjustment Diagram Overall Gain Adjustments Gain Adjustment Diagram Control Instructions Remote Operation Technical Specifications Introduction Congratulations on your purchase of what is unquestionably one of the finest analog preamplifiers available today. With its combination of features such as full-function remote control, fully balanced operation and state-of-the-art circuitry, your Consummate Preamplifier will give you many years of trouble free, top-quality performance and enjoyment. Please take a few moments to read this owner's manual. The Consummate offers a large number of interconnect and user-operational possibilities. A thorough understanding of these features will allow you to gain the maximum performance for which this preamplifier was designed. [. . . ] The 300 ohm unbalanced/600 ohm balanced output impedance should be selected when Jeff Rowland Design Group power amplifiers are used. It is recommended that these power amplifiers also be set for the low input impedance option (300 ohm unbalanced/600 ohm balanced) when used with this preamplifier. This configuration will create an ideal situation in terms of interconnect interface between the preamplifier and power amplifier. Power amplifiers from other manufacturers that have a similar input impedance configuration will also benefit from this impedance matching condition. The 150 ohm unbalanced/300 ohm balanced output impedance option can be selected when power amplifiers with higher input impedances (greater than 300 ohm unbalanced/600 ohm balanced) are used. This option is recommended for interconnection conditions other than those discussed in the paragraph above. All impedance switches may be adjusted during listening if desired. Preamplifier Internal View Impedance Adjustment Diagram Overall Gain Adjustments The overall gain structure of your Consummate Preamplifier can be configured to one of four different values: 6 dB, 12 dB, 18 dB or 20 dB. The Consummate can thus be used with a wide variety of analog and digital sources since many digital sources such as compact disc players and digital to analog converters have high output voltages relative to tuners, tape decks, etc. This feature also allows you to tailor the gain structure for use with power amplifiers of nonstandard gain parameters and/or loudspeakers with various efficiencies. The gain switches are located on the underside of the plug-in modules located within the preamplifier. The top cover should be removed according to the instructions outlined in the "Impedance Matching" section of this manual. Once the top cover is removed, the modules can be lifted directly upward from their sockets. Underneath each module is a switch similar to the switches used to set input and output impedance. Adjust these switches according to the module diagram shown on page 11. After the gain switches have been set to the desired positions, reinstall the modules, paying careful attention to the exact alignment of the pins and sockets. If you are in doubt as to the correct procedure outlined above, then contact your dealer or the factory for assistance. Incorrect installation of these modules may result in damage to the preamplifier circuitry which cannot be covered under warranty. This symbol pointing to the right will indicate which input is routed to the preamplifier Record Outputs for recording. Note: If your system utilizes a signal processor or tape recorder, you should use input 6 on the rear panel as the processor or tape input (return). Selecting input 6 when the INPUT/RECORD button is in record will display a "0" in the front panel display. This prevents the possibility of causing a feedback situation when a signal processor or tape deck is connected. 6 (SINGLE) Pressing any of the numerical push buttons will route the selected input (indicated on the front panel display) to either the Main Outputs or Record Outputs depending upon the last command of the INPUT/RECORD button. [. . . ] A small red lamp located behind the front panel will light during the presence of the infrared signal. Occasionally, certain ambient lighting conditions or signals from other hand held remotes will also light this lamp. Since the Consummate Preamplifier is only sensitive to the infrared code of the hand held transmitter, occasional lighting of this lamp under such circumstances will not normally interfere with the operation of the Consummate. If the infrared transmission of other hand held remotes does interfere with the operation of the Consummate, two other data rates of infrared transmission can be selected inside the preamplifier and hand-held remote transmitter. [. . . ]