User manual PROEL ACDT90

[. . . ] Water and moisture: This apparatus should not be used near water (i. e. bathtub, kitchen sink, swimming pools, etc. ) Ventilation: This apparatus should be placed in a position that doesn't interfere with correct ventilation. This unit, for example, should not be placed on a bed, sofa cover o similar surfaces that could cover ventilation openings, or placed in a built-in installation, such a bookcase or a cabinet that could block air flow trough ventilation openings. Heat: This apparatus should be placed away from heat sources, like radiators, heat registers, stoves or other products (including amplifiers) that produce heat. [. . . ] · If you detect a particular smell from the unit, please immediately turn it off and disconnect the AC power cord. · Don't force commands (switches, controls, etc. ) · · · · To obtain good speakers wire contacts, please tighten the screw terminals firmly. This unit should be placed in a rack (see INSTALLATION) and kept far from: Wet places Direct exposure to heat sources (like sun light) Non properly ventilated places Disconnect the power cord during storms or when the unit is not used. In order to prevent fire and electric shock risks, it's necessary to keep the unit far from sprinkling and drops. Please don't put cups, vases or other object containing liquids over the unit. In case of interferences from source signal, THD value will raise over 10%. Don't place this unit in a bookshelf o in other places with small room. is not responsible for any damage that occurs due to a wrong unit installation. · · · Thank you for choosing one of Proel products, and for your confidence towards our brand, synonymous of professionalism, accuracy, high quality and reliability. All our products are CE approved and designed for continuous use in professional installation systems. 2. D ESCRIPTION This unit is designed for speech, music, paging and sound reinforcement applications. · Digital AM FM tuner, with 5 memories for each band, and CD player sections built-in. · Two unbalanced microphone inputs, for dynamic microphones, and one unbalanced switchable Microphone/Aux input. · Four outputs ­ one constant impedance outputs (4) ­ three constant voltage outputs (25 V, 70 V, and 100 V). · In case of AC power fault or black out, the unit will be powered by 24 V DC, with automatic and silent switchover to backup power. Note: to activate this feature switch # 15 of fig. · We inform our customers that if DC power supply is supplied by a battery, the unit won't be able to recharge the battery. · When the amplifiers is powered by 24 V DC, amplifier nominal power will be reduced by 20%. 2. Input connections · MICROPHONE CONNECTION: Despite the kind of microphones you're using, please always use a shielded wire. Please see the following drawings for details about the different wirings: Balanced low impedance microphone: Unbalanced low impedance microphone: AUX balanced and unbalanced connections. 3. Output connections Attention To prevent the risk of electric shock, never touch amplifier outputs when the amplifier is turned on. 17) remove the protection cover unscrewing the screws. This unit can be used both with constant impedance speakers (4 ) and constant voltage speakers (25V, 70V, and 100V). CONSTANT IMPEDANCE LINE To use this amplifier with a constant impedance line (4), please connect the COM terminal to the negative post of your speaker, and connect the 4 terminal to the positive post COM (fig. · To obtain the best performances, total speakers impedance connected to the line, should be equal to the amplifier output impedance. · The speakers power sum should not be lower than the amplifier output power. [. . . ] · Cut the volume, turn off the CD player section for some seconds then turn on the CD player section again. · If the problem remains, please contact a qualified maintenance centre. CD player display doesn't turn lit. Output radio signal is distorted, there are many interferences or a very low-level sound is heard. Output radio signal is discontinuous, with hum and noises. LED level indicator shows signal but no signal is output. CD player display shows an error message (ER. . ). 8. [. . . ]