PROEL ACDT90 Instruction Manual
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PROEL ACDT90 Instruction Manual

Pa combo amplifier
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INSTRUCTION MANUAL
PA Combo Amplifier
ACDT90

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Summary of Contents for PROEL ACDT90

  • Page 1 INSTRUCTION MANUAL PA Combo Amplifier ACDT90...
  • Page 2 IMPORTANT SAFETY INSTRUCTIONS To reduce the risk of electric shock do not remove cover (or back panel). No CAUTION: user serviceable parts inside. Refer servicing to qualified personnel only. To reduce the risk of fire or electric shock, do not expose this apparatus to WARNING: rain or moisture.

  • Page 3: Detailed Safety Instructions

    Sentences preceded by symbol contain important safety instruction. Please read it carefully. DETAILED SAFETY INSTRUCTIONS. 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.

  • Page 4: Important Safety Instructions

    Objects or liquid entry inside the unit: Be careful that no objects fall or liquid is spilled inside the unit through ventilation openings. Safe power line use: • Keep firmly the plug and the wall outlet while disconnecting the unit from AC power. •...
  • Page 5 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. • PROEL S.P.A. is not responsible for any damage that occurs due to a wrong unit installation.
  • Page 6 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. D ESCRIPTION This unit is designed for speech, music, paging and sound reinforcement applications.

  • Page 7: Front Panel Description

    3. FRONT PANEL DESCRIPTION fig.1 Power On/Off switch. Overload LED. Output LED meter. Unbalanced 1/4” jack (MIC1 and MIC2). Unbalanced Microphone/Aux 1/4” jack. MIC1, MIC2, MIC3/AUX volume controls. MIC3/AUX switch. Siren On/Off switch. Tone controls (BASS and TREBLE). 10. CD player section. 11.

  • Page 8: Installation

    12. IEC AC power socket. 13. AC type T 1,6 AL 250 V fuse-holder. 14. DC type T 10 AL 250 V fuse-holder. 15. Emergency DC power switch (24 V DC). 16. 24V DC emergency power terminal. 17. Speakers output for constant impedance/constant voltage. 18.
  • Page 9 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.
  • Page 10 This unit can be used both with constant impedance speakers (4 Ω) and constant voltage speakers (25V, 70V, and 100V). CONSTANT IMPEDANCE LINE To use this amplifier with a constant impedance line (4Ω), please connect the COM terminal to the negative post of your speaker, and connect the 4Ω...
  • Page 11 CONSTANT VOLTAGE LINE If you’re using a constant voltage line, connect either the 25V, 70, or 100V to the “+” side of the speaker system, and connect COM to “-“ side of the speaker (fig. 2 ref. 17). • Speakers should have a transformer of the same voltage developed by the amplifier.

  • Page 12: Cd Player Section

    6. OPERATIONS: 1. Pressing the POWER switch the unit turns on, and its LED is lit. Pressing it again the unit turns off. 2. BASS control modifies signal lower frequencies output (up to 10 dB of boost or cut). Set this control level by personal taste and ambient acoustic character.
  • Page 13 CD player functions: • OPEN/CLOSE. Press this key to open/close the CD tray. • PLAY/PAUSE. Starts/stops track playback. • LEVEL. This control serves to set CD player volume. • STOP. Stops CD playback. • B.SKIP/REV. Pressing this key once, playback starts from the beginning of current track.

  • Page 14: Troubleshooting

    • MANUAL SEARCH. If signal is too weak, automatic search operation will not be possible, so it’s necessary to perform manual search. a. Press BAND key to select desired band (AM or FM). b. Pressing shortly the UP or DOWN key, frequency will changes with 100KHz step.
  • Page 15 • Check speakers wires and overall There’s no output signal on one or both channels. line. • Check that pilot signal has a proper level. CD player display doesn’t turn lit. • Check that dedicated CD player POWER switch is ON. No output signal from CD player.
  • Page 16 8. Technical specifications Model ACDT90 Output power 90 W RMS 130 W MAX Constant impedance output 4Ω ~ 16Ω Constant voltage output 25 V / 70 V / 100 V MIC1 – MIC3: unbal. 6.3 mm jack 600Ω -52dB ±2 dB Inputs connectors AUX 2: unbal 6.3 mm jack 600Ω...
  • Page 17 9. Typical hookup diagrams...
  • Page 19 Directive 73/23/EEC (Low Voltage) and following modifications 93/68/EEC, as the following standard: EN 60065:1998 Proel SpA pursue a policy of continuous research and development. Proel SpA reserve the right to modify product circuitry and appearance at any moment, without prior notice.
  • Page 20 PROEL S.p.A. (World Headquarters - Factory) Via alla Ruenia 37/43 64027 Sant’Omero (Te) – Italy Tel: +39 0861 811241 Fax: +39 0861 887862 E-mail: info@proelgroup.com installation.proelgroup.com...

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