User manual ROLLS RA900

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ROLLS RA900 : Download the complete user guide (173 Ko)

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   ROLLS RA900 DATASHEET (137 ko)

Manual abstract: user guide ROLLS RA900

Detailed instructions for use are in the User's Guide.

[. . . ] In the absence of such purchase receipt, the warranty period shall be one (1) year from the date of manufacture. This warranty shall be invalid if the product is damaged as a result of defacement, misuse, abuse, neglect, accident, destruction or alteration of the serial number, improper electrical voltages or currents, repair, alteration or maintenance by any person or party other than our own service facility or an authorized Service Center, or any use violative of instructions furnished by us. This one-year warranty is in lieu of all expressed warranties, obligations or liabilities. [. . . ] The unit's circuitry is protected from overheating by a variable-speed fan. However, if the heatsink temperature rises above 90 degrees C, the output will mute until the amplifier cools down. An ultrasonic network decouples RF from the output and helps keep the amplifier stable with reactive loads. Thank you for your purchase of the ROLLS RA900 Professional Power Amplifier. The RA900 Power Amplifier is a two channel amp with two 410 watt RMS - 4 ohm outputs via 5-way binding posts. It may be bridged and connected to a 4 or 8 ohm load supplying up to 1100 Watts or 850 Watts respectively. The unit is housed in a painted steel chassis and includes a special high performance transformer, and a fused power line. The RA900 is ideal for DJs, musicians, or other sound reinforcement applications such as powering front-of-house speakers or monitors. INSPECTION 1. If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We suggest saving the shipping carton and packing materials for safely transporting the unit in the future. Please complete the Warranty Registration Card and return it to the factory. Table of Contents INTRODUCTION INSTALLATION REAR PANEL STEREO CONNECTION OUTPUTS OPERATING VOLTAGE PROTECT INDICATORS SPECIFICATIONS WARRANTY 1 INSPECTION 1 FRONT PANEL 2 OPERATION 3 BRIDGED 3 INPUTS 3 GROUND LIFT 3 LOW-CUT FILTER 4 5 Back Cover 1 2 3 3 3 3 3/4 INSTALLATION Connect the power cord to an AC power source, connect the input to the signal source and to the RA900 via the XLR or 1/4" input jacks. Turn the Volume controls fully counterclockwise (off), and turn on the power switch, the power LED should light. With the program material running, slowly increase the Volume controls until the desired level of sound is present. [. . . ] OPERATING VOLTAGE The serial number of your RA900 will indicate the correct AC operating voltage. LOW CUT FILTER The Low Cut Filter removes ultra-low frequency content from the audio signal that could possibly damage or cause distortion in a loudspeaker system. The DIP switch on the rear panel enables or disables the filter independently for each 3 + 2 1 3 B INPUT THRU A LOW LOW CUT FILTER 1 4 CUT FILTER ON=30Hz 2 3 ON=30Hz OFF=50Hz OFF=50Hz - BRIDGE MONO + STEREO BRIDGE Channel B Channel A GROUND LIFT THRU OUTPUTS GND LFT PWR LOW-CUT SWITCHES: Connects or disconnects the low-cut filters. [. . . ]

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