User manual MACKIE FRS

[. . . ] TWO CHANNEL POWER AMPLIFIERS FRS·1300, FRS·1700, and FRS·2800 OWNER'S MANUAL FRS Series FRS·2800 FAST RECOVERY POWER AMPLIFIER 1 OL -3 -6 -9 -20 O O 2 OL -3 -6 -9 -20 SIG O O MAX SIG MAX FAST RECOVERY POWER AMPLIFIER CHANNEL 2 BRIDGED CHANNEL 1 SUBSONIC @ 30Hz FILTER SPEAKER OUTPUTS Use only class 3 wiring CLIP LIMIT PIN 1+ 1 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. AVIS: RISQUE DE CHOC ELECTRIQUE -- NE PAS OUVRIR PIN 1+ 1 BRIDGED PIN 1+ 2+ AMP MODE DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA · MANUFACTURED IN CHINA FABRIQUE EN CHINE · COPYRIGHT ©2008 "MACKIE", AND THE RUNNING MAN FIGURE ARE TRADEMARKS OF LOUD TECHNOLOGIES, INC. CH 2 PIN 2+ 1+ 21 CH 1 FRS SERIES AMPLIFIERS Important Safety Instructions 1. Donotblockanyventilationopenings. Installinaccordancewiththe manufacturer'sinstructions. Donotinstallnearanyheatsourcessuchasradiators, heatregisters, stoves, orotherapparatus(includingamplifiers)thatproduceheat. [. . . ] CLIP LIMIT When engaged, this switch protects your loudspeakers from the effects of clipping. It is designed to be virtually transparent, meaning you probably won't even notice any audible difference when the switch is turned on. We recommend that you leave this switch on at all times. However, if you are working at quiet levels, or you have already placed a compressor/limiter in the signal path, you can leave this switch off. The limiter senses when the amplifier is about to be overdriven and attenuates the overall level just enough to keep the signal from clipping. SUBSONIC FILTER Turn this switch on to engage a low-frequency cutoff (high-pass) filter at 30 Hz. The frequency range below 30 Hz is attenuated. The amplifiers can amplify signals below 20 Hz, but most speakers can't reproduce frequencies that low. By engaging the subsonic filter, you allow the amplifier to power only the frequencies you can hear. In addition, this filter can reduce low-frequency stage noise (footsteps) and accidental microphone pops that could damage a loudspeaker. Leave this off if your amplifier is powering a subwoofer, or if your speakers can reproduce low frequencies such as the kick drum range. FAST RECOVERY POWER AMPLIFIER CHANNEL 2 BRIDGED CHANNEL 1 SUBSONIC @ 30Hz FILTER SPEAKER OUTPUTS Use only class 3 wiring CLIP LIMIT PIN 1+ 1 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFIED PERSONNEL. PIN 1+ 1 BRIDGED PIN 1+ 2+ AVIS: RISQUE DE CHOC ELECTRIQUE -- NE PAS OUVRIR AMP MODE DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA · MANUFACTURED IN CHINA FABRIQUE EN CHINE · COPYRIGHT ©2008 "MACKIE", AND THE RUNNING MAN FIGURE ARE TRADEMARKS OF LOUD TECHNOLOGIES, INC. CH 2 PIN 2+ 1+ 21 CH 1 10 10 11 12 FRS SERIES AMPLIFIERS General Precautions AC POWER REQUIREMENTS The amplifier's power cord should be plugged into an AC outlet properly configured with the voltage required for your particular model. Be sure the AC outlet can supply enough current to allow full power operation of all the amplifiers plugged into it. The outlet should be a three-prong socket that matches the power cord. WARNING: Bypassing the plug's safety ground pin can be dangerous. If the amplifier should overheat, a thermal switch turns off the power amplifier, allowing the heatsink to cool down. Once the amplifier has cooled to a safe operating temperature, the thermal switch resets and reactivates the amplifier. If this should occur, identify the cause of the problem and take corrective action. For example: · · · Provide better ventilation Install a fan in the rack to move more air Make sure the amplifier is not overloaded with too low of a load impedance or by a short circuit on the speaker line Owner's Manual The AC current demand of an amplifier varies dependRACK MOUNTING ing on several factors, including the load impedance, the crest factor, and the duty cycle of the program The FRS amplifiers are designed to be mounted in a material. Under typical conditions reproducing rock standard 19 inch rack. They require two rack spaces music where musical peaks are just below clipping, the (2U = 3. 5"). They also require 14. 65" depth inside the amplifiers require the following average currents: rack, including the rear support brackets. [. . . ] IMPORTANT: Make sure that the Service Request Number is plainly written on the shipping carton. LOUD Technologies reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out. LOUD Technologies may, at our option, require proof of the original date of purchase in the form of a dated copy of the original dealer's invoice or sales receipt. Final determination of warranty coverage lies solely with LOUD Technologies. [. . . ]