Dolby Laboratories 218-I Owner's Manual
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Dolby Laboratories 218-I Owner's Manual

Dolby Laboratories 218-I Owner's Manual

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Dolby 218-I
Owner's Manual
1 January 2023
Issue 1

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Summary of Contents for Dolby Laboratories 218-I

  • Page 1 Dolby 218-I Owner's Manual 1 January 2023 Issue 1...
  • Page 2 1275 Market Street San Francisco, CA 94103-1410 USA Telephone 415-558-0200 Fax 415-645-4000 http://www.dolby.com Trademarks Dolby and the double-D symbol are registered trademarks of Dolby Laboratories, Inc. The following are trademarks of Dolby Laboratories: ™ ® Dialogue Intelligence Dolby Theatre ® ® Dolby Dolby Vision ™...

  • Page 3: Table Of Contents

    1.1 218-I Overview ........................1 1.2 218-I Specifications ......................1 1.3 218-I Processor Settings .....................2 Chapter 2 Installing the Dolby 218-I ................3 2.1 Rigging the 218-I for Overhead Installations ..............3 2.1.1 Tools Required......................3 2.1.2 Installing the 218-I......................3 2.1.3 Connecting the Safety Cable ...................4 2.2 Connecting Audio .......................5...
  • Page 4 Dolby disclaims any liability, including damage or injury, for the use of mounting hardware supplied by any party other than Dolby. Any modification to Dolby 218-I Owner's Manual Issue 1 1 January 2023...
  • Page 5 Caution: This symbol that appears on the unit and/or instruction manual is intended to alert the user to the presence of important safety operating and maintenance instructions. Dolby 218-I Owner's Manual Issue 1 1 January 2023...
  • Page 6 For additional information regarding Waste Electrical and Electronic Equipment (WEEE) and product disposal go to http: dolby.com/us/en/about/environmental-commitment.html. Russian environmental regulations and compliance This product complies with Russia EAC RoHS requirements. Dolby 218-I Owner's Manual Issue 1 1 January 2023...

  • Page 7: Chapter 1 Introduction

    2. Measured with 12 dB crest pink noise @ 2 Vrms in ground plane conditions with required HPF and LPF. Sensitivity interpolated to 1m 3. 6 dB crest pink noise for one hour with required HPF and LPF, calculated power based on minimum impedance Dolby 218-I Owner's Manual Issue 1...

  • Page 8: 218-I Processor Settings

    28 Hz 24 dB octave (fourth order) Butterworth Lowpass filter 80–160 Hz 24 dB octave (fourth order) Butterworth Limiting Section Threshold/RMS Voltage Attack Release Peak Stop Voltage Appendix B 64 V 720 ms 126 V Dolby 218-I Owner's Manual Issue 1...

  • Page 9: Chapter 2 Installing The Dolby 218-I

    Installing the Dolby 218-I Rigging the 218-I for Overhead Installations The 218‐I provides sixteen M10-1.5 rigging points to attach installer‐supplied rigging hardware. There are four rigging points on each of the subwoofer long sides. You can purchase eyebolts from Dolby or a 3rd party supplier Warning: CONSULT A PROFESSONAL MECHANICAL OR STRUCTURAL ENGINEER TO APPROVE ALL ATTACHMENTS TO BUILDING STRUCTURE.

  • Page 10: Connecting The Safety Cable

    5:1 SAFETY FACTOR BASED ON THE WEIGHT OF THE APPARATUS. YOU MUST SECURELY TIGHTEN THE HARDWARE. REMOVE ALL SLACK FROM THE CABLE. REPLACE THE CABLE IF IT HAS BEEN PULLED DUE TO A PRIMARY RIGGING FAILURE. REMOVABLE THREAD LOCKING IS RECOMMENDED ON ALL FASTENERS. Dolby 218-I Owner's Manual Issue 1...

  • Page 11: Connecting Audio

    Chec k the safety cable to ensure there is no slack, rubbing, buzzing, or rattling, and • that the safety cable cannot short out exposed speaker wiring. I f possible, play sound through the speaker to identify any connection issues, • buzzing, rattling, or vibrations. Dolby 218-I Owner's Manual Issue 1...

  • Page 12: Dimensions

    Installing the Dolby 218-I Dimensions 7.00 178 mm 35.37 898 mm 7.00 178 mm 35.01 889 mm 20.24 514 mm Figure 2‐6 Figure 2-3 Dimensions in [Inches] and Millimeters Dolby 218-I Owner's Manual Issue 1...

  • Page 13: Appendix A Environmental Compliance And Regulations

    For additional information regarding Waste Electrical and Electronic Equipment (WEEE) and product disposal go to http://www.dolby.com/us/en/about/environmental-commitment.html Russian Environmental Regulations and Compliance Following is the 218‐I Russian environmental compliance information. Restriction of Hazardous Substances (RoHS) Directive This product complies with Russian EAC RoHS requirements. Dolby 218-I Owner's Manual Issue 1...

  • Page 14: Appendix B Setting System Limiters

    However, amplifier gain changes modify the limiter action. If the amplifier gain is decreased, protection engages early, which limits driver output. If the amplifier gain is increased, protection engages only after the driver reading is above the safe RMS voltage. Dolby 218-I Owner's Manual Issue 1...

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