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Resumen del manual
Make sure to leave at least 100mm of space above the cabinet or rack shelf system. Since the temperature inside of the cabinet or rack shelf system can easily rise up to 40°C during operation, bearing in mind the maximally allowable environmental temperature during operation for all other appliances installed in the same rack shelf system is mandatory. (also refer to “MAINS OPERATION & RESULTING TEMPERATURE”) The use of rails or optionally available rack adapters is mandatory as well when installing the appliance in a rack shelf system to prevent the front panel from bending. Caution: For problem-free operation exceeding the maximally allowable environmental temperature or +40°C is not permissible. The power amplifier has to be protected against: dripping or splashing water, direct sunlight, high temperatures or direct influence of heat sources, high humidity, extensive dust and vibrations. Condensation on internal parts may occur after transporting the power amplifier from a cold into a warmer environment. In that case operation is only permissible after the appliance has gained the new temperature (after approximately one hour). If foreign objects or liquids have entered the power amplifier’s enclosure make sure to instantly separate the appliance from the mains power and contact an authorised DYNACORD service centre for inspection before continuing operation. Do not use any sprays or solvents for cleaning the appliance, because they might severely damage the surface of the enclosure or lead to dangerous fire hazard. 13/4“ 44.45 11/4“ 31.75 44.45 151/2“ FRONT VIEW Use the POWER switch located in the centre of the front panel to switch the appliance’s power on. The soft-start function prevents current inrush peaks on the mains, which in addition prevents the mains line protection switch from activating during power-on operation of the power amplifier. The loudspeaker outputs are activated via relay switching with a delay of approximately 2 seconds effectively attenuating eventual power-on noise. The PROTECT LED lights during the delay time and the fans run at maximum speed. This is normal to confirm the immaculate operation of the protection circuitry. Upon power-on, all power amps with RCM-24 Module installed regain the state of operation prior to the last power-off. For example: if a power amplifier had been switched off using the POWER-switch while being in Stand- by mode, upon power-on it restarts in this exact mode. This indicator lights when the power amplifier has been switched on. Causes for the POWER-indicator not lighting are: the appliance is not connected to the mains network, a defective primary fuse, or the power amplifier is set to stand-by operation (STAND-BY LED lights). This indicator light when the power amplifier is in stand-by mode, which can be activated from the RCM-24 or via Easy Remote. In stand-by operation only the internal auxiliary power supply unit is activated. The main power supply unit is separated from the mains. The PROTECT LED lights indicating that one of the internal protection circuits against thermal overload, short-circuit, Back-EMF, HF-occurrence at the output, etc., has been activated. In that case, the output relays separate the power amps from the load connected to prevent the connected loudspeaker systems and the power amplifiers as well from being damaged. Whatever caused the fault – e.g. a short- circuited speaker cable – needs to be remedied. In case of thermal overload you have to wait until the power amplifier automatically regains normal operation. The OUT LED lights as soon as an audio signal of approximately 30dB below full modulation is present. The LED is dimmed when speaker cables are short-circuited or a protection circuit has been activated. The 0dB LED lights when the power amplifier is driven at its maximum. Higher input voltage does not result in higher peak output voltage. This indicator lights as soon as the integrated dynamic limiter is activated and the power amplifier is driven at the clipping limit or generally at its maximum capacity. Short-term blinking is not a problem, since the internal limiter trims input levels of up to +21dBu down to a S/N-ratio of approximately 1%. If, on the other hand, this LED lights constantly, reducing the volume is recommended to prevent the loudspeaker systems connected from being damaged by probable overload. REAR VIEW INPUT A / INPUT B The inputs INPUT A & INPUT B are electronically balanced offering an input sensitivity of +6dBu (1.55V) for direct connection of mixing consoles, etc. Connection can be established via the XLR-type input connectors or the supplied screw-on connectors, which are connected in parallel. The pin-assignment of the XLR-type input connectors is according to the IEC 268 standard. In case floating inputs are needed, retrofitting optionally available input transformers is possible. One extension-kit NRS 90208 (Order-No. 121 641) per channel is needed. PARALLEL CONNECTION Connection c...
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