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Documentation revision history

The documentation revision history lists the date, issue number, and description of all publications of

the

Dolby Speaker System 128 Owner's Manual.

Date

Issue

Description

31 August 2021

Issue 1

Initial release

27 October 2021

Issue 2

Updated Chapter 5

Documentation revision history

Dolby Speaker System 128 Owner's Manual

8800293 Issue 2

27 October 2021

Summary of Contents for All-in-Wonder 128

Page 1: ...Dolby Speaker System 128 Owner s Manual 27 October 2021 8800293 Issue 2...

Page 2: ...el Every Dimension Feel Every Dimension in Dolby Feel Every Dimension in Dolby Atmos MLP Lossless Pro Logic Surround EX All other trademarks remain the property of their respective owners Patents THIS...

Page 3: ...em 128 18 3 4 Working with electrical components 22 3 5 Connecting and configuring the CS128MH 22 3 6 Connecting and configuring the CS128LF 24 4 Dolby Speaker System 128 and system components specifi...

Page 4: ...plied rigging hardware is intended only for use with the specified loudspeaker s The installer assumes all risk of loss and or injury arising out of the use of the supplied rigging hardware with any o...

Page 5: ...attempting any relocation of the loudspeakers as there is danger of tipping if the system is not secured to the building structure High temperature warning Loudspeaker system may reach elevated temper...

Page 6: ...r system that provides better audience coverage lower distortion discomfort and increased low frequency response With intuitive ergonomic design and features the Dolby Speaker System 128 enables quick...

Page 7: ...deling motor and suspension optimized cooling for low power compression and an aluminum demodulation ring for decreased distortion The cabinet depth is optimized for use in auditoriums with minimal sp...

Page 8: ...in an independent chamber within the cabinet that provides improved performance and reliability On the CS128LF a unique flip card allows you to change the electrical routing for parallel wiring of the...

Page 9: ...tailed information regarding speaker operating modes Note The input terminals are marked with indicators to show the polarity Per International Electrotechnical Commission IEC standards a positive vol...

Page 10: ...he horn positioned exactly two thirds the distance from the bottom of the screen The acoustic center of the speaker system is 1 6 m 63 inches above the building structure from which it is secured See...

Page 11: ...is minimizes high frequency reflections screen loss but does not locate the speaker too close to the screen When aiming the system angling of the CS128MH may require that the speaker system be set bac...

Page 12: ...ndex php fc downloads en html Dolby Speaker System 128 GLL file descriptions CS128LF GLL The file name to create the Dolby Speaker System 128 screen channel is Dolby_CS128LF For correct simulation pla...

Page 13: ...nd cable length Typical maximum acceptable power loss is 0 5 dB or less than 11 2 7 Contacting Dolby You can contact Dolby Cinema Solutions and Support using email or regional telephone numbers You ca...

Page 14: ...he bottom speaker cabinet to the building structure may result in the system tipping or falling which may cause damage or injury Caution Dolby disclaims any liability including damage or injury for th...

Page 15: ...he exclusive responsibility of the installer We recommend using M10 bolts and a serviceable thread locking compound for example Loctite 243 We also recommend applying acoustic or other non hardening c...

Page 16: ...Figure 8 Securing the CS128LF Assembling the Dolby Speaker System 128 Dolby Speaker System 128 Owner s Manual 16 8800293 Issue 2 27 October 2021...

Page 17: ...l aiming process at this point 4 Fully tighten the M10 bolts Optionally the M10 bolts can be loosely installed and tightened later as discussed in Aiming the Dolby Speaker System 128 on page 18 Figure...

Page 18: ...there is danger of tipping if the system is not secured to the building structure 3 3 Aiming the Dolby Speaker System 128 Use the information provided in this section to aim the Dolby Speaker System 1...

Page 19: ...st in the horizontal aiming process a Place the laser pointer on the outside left or right side of the CS128MH enclosure b Align the laser with the vertical plane of the enclosure c Adjust the horizon...

Page 20: ...128MH toward the theater RLP The angle adjustment range is 15 15 degrees If a laser pointer is used to assist in the vertical aiming process a Place the laser pointer on the top of the CS128MH enclosu...

Page 21: ...stment pivot bolt and M5 set screw 5 Tighten the M10 bolts and M5 vertical aiming set screws to 4 Nm 2 95 ft lb 35 4 in lb so the vertical angle adjustment is locked in place Aiming the Dolby Speaker...

Page 22: ...mended The following sections provide basic information regarding Dolby Speaker System 128 input plates choosing between the two modes of operation installing the wiring and detailed information regar...

Page 23: ...spring loaded and pushing it inward opens the gap in the hole directly below the tab 4 Insert the wire fully into the hole 5 Release the terminal tab and the spring mount clamp will secure the wire F...

Page 24: ...off all amplifiers when connecting loudspeaker wiring Procedure 1 Locate the input plate on the side of the CS128LF Figure 19 CS128LF input plate location The input plate contains a flip card that yo...

Page 25: ...move if any are found Note The input terminals are marked with indicators to show their polarity Per IEC standards a positive voltage on the positive marked input results in the transducers moving out...

Page 26: ...8 ohm load to a single amplifier channel Figure 23 Mid high configuration The low frequency parallel configuration is a 4 ohm load to a single amplifier channel Assembling the Dolby Speaker System 128...

Page 27: ...sing for both channels RMS voltage limiting remains the same as in parallel mode as only the amplifier power requirement decreases by 50 percent for the respective amplifier channel In this configurat...

Page 28: ...Figure 25 Low frequency independent wiring Assembling the Dolby Speaker System 128 Dolby Speaker System 128 Owner s Manual 28 8800293 Issue 2 27 October 2021...

Page 29: ...ts are available The list below is an outline of this chapter Dolby Speaker System 128 specifications CS128MH specifications CS128LF specifications Dolby Speaker System 128 and system components dimen...

Page 30: ...dB bandwidth BW low pass filter LPF the rated system frequency range CS128LF sensitivity 1 W 101 dB Measured with 12 dB crest pink noise 2 Vrms in half space conditions with required processing C128M...

Page 31: ...with required HPF and 48 dB bandwidth BW low pass filter LPF the rated system frequency range calculated power based on rated impedance Power draw 300 W Measured average power over 5 seconds at the r...

Page 32: ...B crest pink noise with required HPF and LPF This measured power draw from the amplifier is useful for estimating amplifier sizing in overall system design Maximum voltage peak 138 Vpk Measured Vpk ov...

Page 33: ...and system components dimensions Figure 27 Dolby Speaker System 128 and system components dimensions Dolby Speaker System 128 and system components dimensions Dolby Speaker System 128 Owner s Manual...

Page 34: ...uirements The values in the requirements apply to both parallel and direct drives The list below is an outline of this chapter CS128MH digital signal processing requirements CS128LF signal processing...

Page 35: ...r it may show only BW with no option to input or show Q To correctly match the intended performance of this Dolby product confirm with your DSP manufacturer as to which implementation is used The Dolb...

Page 36: ...I may provide both Q or BW settings or it may show only BW with no option to input or show Q To correctly match the intended performance of this Dolby product confirm with your DSP manufacturer as to...

Page 37: ...ystem limiters process with the required digital signal processing engaged The list below is an outline of this chapter Setting system limiters System limiters Dolby Speaker System 128 Owner s Manual...

Page 38: ...e than five seconds very important for low frequency outputs 2 Access the RMS limiter setting in the DSP and set it to the maximum value such that no limiting should occur 3 Set the attack and release...

Page 39: ...r and description of all publications of the Dolby Speaker System 128 Owner s Manual Date Issue Description 31 August 2021 Issue 1 Initial release 27 October 2021 Issue 2 Updated Chapter 5 Documentati...

Page 40: ...et Street San Francisco CA 94103 1410 USA 2021 Dolby Laboratories All rights reserved Dolby and the double D symbol are registered trademarks of Dolby Laboratories All other trademarks remain the prop...

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