User manual PROEL AMP 120Z4

[. . . ] 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. [. . . ] Maintenance: The user shouldn't attempt maintenance operation not described in this user's manual. Every maintenance operation should be done by qualified personnel only. IMPORTANT SAFETY INSTRUCTIONS: · Install this unit following owner's manual instructions. · Don't install, connect or disconnect power supply when the unit is powered, otherwise there's an high risk of electric shock. · Don't open the unit, there are no user serviceable parts inside. · 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. Description These units have been specifically designed for paging, music, and sound reinforcement applications in P. A. FEATURES · Impedance constant outputs (4, 8, 16 ) and constant voltage outputs (25, 70, 100 V). · Four combo (XLR ­ ¼" jack) inputs · PRE-OUT output · MAIN-IN input · RCA input · LED level meter · Five zone selection switches · Monitor output · Vocal activating priority input · Contact activating priority input · Signal peak LED · Signal present LED · · · · · Protection circuit LED Telephone-line signal input Bass and Treble EQ controls Output volume control Five independent level controls for input signals 3. 5) PEAK - Signal peak LED 6) SIGNAL - Signal present LED 7) PROT - Protection circuit status LED 8) ZONE SELECT - Active zone LED indicator 9) TREBLE - High frequencies control 10) BASS - Low frequencies control 11) Input signal level controls 12) MASTER ­ Master level control 13) CHIME ­ Chime activating switch 4. REAR PANEL DESCRIPTION 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) 16) 17) fig. Input connections yellow green red · INPUT1, INPUT2, INPUT3, and INPUT4 are balanced/unbalanced, useful for low impedance (30-600) dynamic microphones, or 24V phantom condenser microphones, or audio sources with line level output (i. e. The connectors are 3-pin "XLR". To choose the source type to be connected, please use selectors (fig. 7): LINE position for AM/FM tuners, CD players etc. , MIC position for dynamic microphones and PHANTOM position for condenser microphones. When this input receives a signal, this signal has priority over all the other inputs; in this way only INPUT 1 audio signal is amplified. [. . . ] - If you're using a zone selector, you won't be able to use constant impedance speakers, since the line is set at 100 V constant voltage. - Speakers should have a transformer of the same voltage developed by the amplifier. - The speakers power sum should not exceed the amplifier maximum output power. · MONITOR output connection This output allows you to connect a speaker (monitor), driven from the unit internal 1W amplifier, reproducing AUX IN signals. - Output signal is set by AUX IN volume control, or by rear panel Monitor vol. [. . . ]