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Axiom QC4.2 User Manual

Digitally controlled class d power amplifiers with smps & dsp
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QC series
QC4.2 - QC4.4 - QC2.4
Digitally Controlled Class D Power Amplifiers with SMPS & DSP
USER MANUAL

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Summary of Contents for Axiom QC4.2

  • Page 1 QC series QC4.2 - QC4.4 - QC2.4 Digitally Controlled Class D Power Amplifiers with SMPS & DSP USER MANUAL...

  • Page 2: Fcc Compliance Notice

    FCC COMPLIANCE NOTICE This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

  • Page 3: Table Of Contents

    CE CONFORMITY ......11 PACKAGING, SHIPPING AND COMPLAINT ..11 WARRANTY AND PRODUCTS RETURN ..11 TECHNICAL SPECIFICATIONS MODEL QC4.2 QC4.4 QC2.4 Channels 4 (single) or 2 (bridge)

  • Page 4: Setup And Rack Mounting (Fig. 1 / 2)

    SETUP AND RACK MOUNTING (FIG. 1 / 2) RECOMMENDED INSTALLATION FIG.1 ON 8U OPEN RACK FRONT REAR COLD AIR HOT AIR FIG.2 EVENTUAL INSTALLATION WITH CLOSED BACK ON 10U closed RACK HOT AIR FRONT REAR (closed) COLD AIR 15 cm 6 inch LOUDSPEAKER CABLE Loudspeaker Line Losses (maximum permissible line lengths for 0.5dB losses, voltage or spl)

  • Page 5: Connections (Fig.3)

    2 positive 17.6 inch QC2.4 19.0 inch n.c. n.c. channel 2 negative channel 1 positive bridge positive 36,8 cm 14.5 inch QC4.2-QC4.4 NOTE: channels 3 and 4 are equal to channel 1 and 2 respectively. 4,2 cm 1.65 inch...

  • Page 6: Front Panel (Fig.5)

    FRONT PANEL (FIG.)

  • Page 7: Rear Panel (Fig.6)

    BRIDGE INPUT MAINS MIN. LOAD 4 MIN. LOAD 8 MIN. LOAD 4 INPUT IMPEDANCE 10K BALANCED INPUT (QC4.2 and QC4.4) BRIDGE INPUT DO NOT COVER DESIGNED & ENGINEERED MAINS MIN. LOAD 4 MIN. LOAD 8 MIN. LOAD 4 INPUT IMPEDANCE...

  • Page 8: Example A

    EXAMPLE A BRIDGE BRIDGE INPUT INPUT BRIDGE BRIDGE INPUT INPUT LIFT MAINS MIN. LOAD 4 MIN. LOAD 8 MIN. LOAD 4 MIN. LOAD 4 MIN. LOAD 8 MIN. LOAD 4 INPUT IMPEDANCE INPUT IMPEDANCE 10K BALANCED 10K BALANCED INPUT INPUT LIFT MAINS MIN.

  • Page 9: Example C

    EXAMPLE C BRIDGE BRIDGE INPUT INPUT BRIDGE BRIDGE INPUT INPUT LIFT MAINS MIN. LOAD 4 MIN. LOAD 8 MIN. LOAD 4 MIN. LOAD 4 MIN. LOAD 8 MIN. LOAD 4 INPUT IMPEDANCE INPUT IMPEDANCE 10K BALANCED 10K BALANCED INPUT INPUT LIFT MAINS MIN.

  • Page 10: Safety And Precautions

    SAFETY AND PRECAUTIONS • CAUTION: before using this product read carefully the following safety instructions. Take a look of this manual entirely and preserve it for future reference. When using any electric product, basic precautions should always be taken, including the following: –...

  • Page 11: Ce Conformity

    • The QC4.2, QC4.4 and QC2.4 amplifiers of Proel have been designed with CLASS I construction and must be connected always to a mains socket outlet with a protective earth connection (the third grounding prong).

  • Page 12: General Information

    GENERAL INFORMATION Thank you for having chosen a PROEL product. QC series is based on PROEL DA amplifiers, a new generation of digitally controlled Class D power modules with Switch Mode Power Supply (SMPS) featuring an innovative technology. Unlike most of the competitors in this range, which use a fixed switching frequency, the PWM (Pulse Width Modulation) output stage of DA modules uses a variable switching frequency according to the input signal level.
  • Page 13 10. Channel SIGNAL/LIMIT Indicator This LED glows in GREEN color to show the presence of the signal at the correspondent amplifier channel. This LED glows in RED color when the DSP is limiting the channel’s output or when the channel input is clipping. NOTE: in case of input clipping you have to reduce the input signal in the signal chain before the amplifier input.

  • Page 14: Pronet

    “easy-to-use” tool to setup and manage your audio system. With PRONET you can visualize signal levels, monitor internal status and edit all the parameters of each connected device. Download the PRONET app from the AXIOM website at http://www.axiomproaudio.com/ clicking on downloads section of the product.

  • Page 15: Qc Setup Instructions

    1. Switch off all the devices. 2. Connect them correctly with the network cables. 3. “TERMINATE” the last device in the network connection. 4. Switch on the first device keeping pressed at least for 5 seconds the “ID” or “PRESET” button on the control panel.

  • Page 16: Dsp Features In Brief

    DSP Features in brief In the BLOCK DIAGRAMS below you can see the CORE DSP processing paths. NOTE: the DSP INPUT section is always fully editable by the user, but the OUTPUT section can have restrictions for FACTORY or PROTECTED presets. In those presets some parameters can’t be edited or viewed. For STEREO and PARALLEL configurations ganging option is available for input and output, to pair easily the sections of the CORE DSP processed channels.
  • Page 17 To make simpler the limiter threshold setting the following table can be used: OUTlimit (dB) QC4.2 QC4.4 QC2.4 Speaker Handling Single Bridge Single Bridge Single Bridge -13,0 -16,0 -19,0 -10,0 -13,0 -16,0 -8,2 -11,2 -14,3 -7,0 -10,0 -13,0 -5,2 -8,2...
  • Page 20 PROEL S.p.A. (World Headquarter) Via alla Ruenia 37/43 64027 Sant’Omero (TE) - ITALY Tel: +39 0861 81241 Fax: +39 0861 887862 www.proel.com REV. 40/15 CODE 96MAN0105...

This manual is also suitable for:

Qc4.4Qc2.4

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