User manual QSC AUDIO RMX 1450
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QSC AUDIO RMX 1450 FICHE TECHNIQUE (128 ko)
Manual abstract: user guide QSC AUDIO RMX 1450
Detailed instructions for use are in the User's Guide.
[. . . ] WHAT IT IS The low-frequency (LF) filter rolls off signals below either 30 Hz or 50 Hz. This improves bass performance by limiting sub-audio cone motion, making more power available for the speakers' rated frequency range. The filter settings for each channel are When the filter is turned off, a 5 Hz rolloff protects against DC or deep sub-audio inputs. WHEN TO USE IT (OR NOT) As a rule, your speakers will sound better with proper filtering. [. . . ] Driving a single 8-ohm speaker with the combined 4-ohm power of both channels. â· Driving a single 4-ohm speaker with the combined 2-ohm power of both channels. Bridge mono with parallel switches engaged Bridge Mono mode makes it possible to drive thousands of watts into a single speaker. Avoid excessive signal level, and make sure the wiring and speaker can handle the power. â· If the load is 4 ohms or less and prolonged overloads occur, the amplifier will probably mute for several seconds during peaks, and the circuit breaker may trip. Use four screws and washers when mounting the amplifier to the front rack rails. Support the amp at the rear also, especially in mobile and touring use; rear rack mounting ear kits are available from QSC's technical services department or by special order from your dealer or distributor. Balanced signals are less prone to AC hum, but unbalanced signals can be suitable for short cable runs. The signal source's output impedance should be less than 600W to avoid high frequency loss in long cables. Unbalanced inputs: Connect the unused side of the balanced input to ground, as shown below left. For two-channel (stereo) operation, use the inputs for both Channel 1 and Channel 2; for parallel or bridged mono operation, use the Channel 1 input. To patch the audio signal to other amps (parallel and bridged modes only), see the instructions for using parallel inputs on page 9. The RMX amplifier offers a choice of output connections, with two Neutrik NL4MD Speakon jacks and two pairs of "touchproof" binding posts. The upper Speakon jack has both Channel 1 and Channel 2 outputs, so it is especially useful for parallel, biamp, or bridged mono operation (see bridged mono operating precautions on page 11). For easier insertion, use the newerstyle NL4FC Speakon connectors with quicklock thumb latches. SPEAKER CABLING Larger wire sizes and shorter lengths minimize both loss of power and Do not place speaker cables next to input wiring. WARNING: To prevent electric shock, do not operate the amplifier with any of the conductor portion of the speaker wire exposed. WARNING: To prevent electric shock, do not operate the amplifier with any of the conductor portion of the speaker wire exposed. SPEAKER CABLING Larger wire sizes and shorter lengths minimize both loss of power and degradation of damping factor. Make sure you connect the amplifier to the correct AC line voltage, which is shown on the serial number label. Connecting to the wrong line voltage is dangerous and may damage the amplifier. Before applying power, check all connections and turn down the gain controls. [. . . ] Is not liable for any damage to speakers, amplifiers, or any other equipment that is caused by negligence or improper installation and/or use of the RMX amplifier. 11- Protect the power cord from being walked on or pinched, particularly plugs, convenience receptacles, and the point where they exit from the apparatus. To fully disconnect from the AC mains, the AC plug must be removed from the AC outlet or the appliance coupler (IEC block) must be removed from the amplifier module. Ensure either the AC line cord plug or the appliance coupler are accessible in case of emergency disconnect requirement. [. . . ]
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