User manual PROEL ACDT90

[. . . ] INSTRUCTION MANUAL PA Combo Amplifier ACDT90 1. IMPORTANT SAFETY INSTRUCTIONS CAUTION: To reduce the risk of electric shock do not remove cover (or back panel). Refer servicing to qualified personnel only. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. [. . . ] 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. FEATURES · State-of-the-art design and manufacturing accuracy. · Wide frequency response: 50 Hz ­ 18KHz. · Low distortion and low noise level. · Digital AM FM tuner, with 5 memories for each band, and CD player sections built-in. Each section has its own independent power switch and volume control. · 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). Unbalanced 1/4" jack (MIC1 and MIC2). Unbalanced Microphone/Aux 1/4" jack. REAR PANEL DESCRIPTION fig. 2 12. IEC AC power socket. 17. Speakers output for constant impedance/constant voltage. 24V DC emergency power connection (generator or battery). · 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. To access to the speaker connection terminals (fig. 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. [. . . ] Repeat the same procedure to add other tracks to program. Pressing PLAY the CD player will begin programmed playback. Note: It's possible to insert in a program up to 20 tracks. From OFF position moving the knob clockwise the tuner is turned on. [. . . ]