User manual ROLLS RA63S

[. . . ] LIMITED WARRANTY This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation, use and service for a period of one (1) year from the date of purchase as shown on the purchaser's receipt. The obligation of Rolls Corporation under this warranty shall be limited to repair or replacement (at our option), during the warranty period of any part which proves defective in material or workmanship under normal installation, use and service, provided the product is returned to Rolls Corporation, TRANSPORTATION CHARGES PREPAID. Products returned to us or to an authorized Service Center must be accompanied by a copy of the purchase receipt. [. . . ] This unit will distribute a mono signal to eight outputs, or a stereo signal to four right and four left outputs. The outputs are designed to drive high-level balanced lines in a sound distribution system. The screw terminals on the rear panel are for input and output, and each output may power more than one line. NOTE: THIS MANUAL ASSUMES THE USER HAS A BASIC WORKING KNOWLEDGE OF AUDIO ELECTRONICS, BALANCED AND UNBALANCED CONNECTIONS, AND PROPER SIGNAL LEVEL SETTING. DESCRIPTION FRONT PANEL MONO INSTALLATION Install the RA63s in a standard 19" rack. The unit is intended for installations where several zones or areas need to be controlled and a high level balanced signal is required to drive the input lines. STEREO/MONO CONFIGURATION To change the stereo/mono configuration of the RA63s, begin by carefully removing the lid. Behind the Channels 5 and 6 level potentiometers is the 4X2 / 8X1 jumper. For stereo operation place the jumper in the 4X2 position, and for mono operation place the jumper in the 8X1 position. Mark the Configuration pad on the rear panel with a felt tip pen so you know which mode the RA63s is in. Replace the lid. 1 2 3 4 5 6 7 8 GAIN 0 dB +20 dB DISTRIBUTION AMPLIFIER 8 Channel Mono 4 Channel Stereo pwr STEREO 1 2 LEFT 3 4 1 2 RIGHT 3 4 Mono 1 - 8 / Stereo 1 - 4: These screwdriver-adjustable controls vary the level of signal for each indicated output. +20dB/0dB Gain switch: Pressing this switch in provides 20 dB of gain to the input signal. pwr: LED indicating the unit's power status. REAR PANEL INPUTS MODEL RA63s SERIAL NUMBER 63sMADE IN U. S. A. [. . . ] MONO 1 - 8, STEREO 1 - 4: For each channel; the two terminals labeled + for the positive or "hot" portion of the output signal, and the - for negative or neutral portion. The ground signal indicates the terminal to be connected to earth ground. _________________________________________________________________ CONNECTION -+ + = In-phase or "Hot" - = Out-of-phase or "Negative" (NOTE: This is NOT a ground connection) = Ground [. . . ]