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Summary of Contents for EM Acoustics S-48
- Page 1 S-48 Subwoofer Product User Manual v2 November 2019 L O U D S P E A K E R S D E F I N E D...
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Page 2: Table Of Contents
Rigging and Suspension ........................9 Material Damage from Magnetism ....................9 5.0 – Rigging & Mounting Options ......................10 5.1 – S-48 Cabinet Hardware Overview ................... 10 5.2 – Stacking S-48 subwoofers......................11 5.4 – Flying the S-48 subwoofer ......................11 6.0 –... - Page 3 7.1 – S-48: Removing the grilles ......................17 7.2 – S-48: Removing the front drive units..................18 7.3 – S-48: Removing the rear drive units ..................19 Appendix A – Technical Specifications ....................21 S-48 compound isobaric subwoofer ....................21 Appendix C –...
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Page 4: Declaration Of Conformity
The packaging supplied with this product is recyclable. Please retain all packaging, however if disposing of this packaging please ensure that you comply with local recycling regulations. These products also all comply to the RoHS Directive 2002/95/EC. S-48 User Manual v2 November 2019... -
Page 5: Introduction
EM Acoustics representative. The S-48 is a compact compound isobaric subwoofer, intended for a wide variety of low frequency applications in small installation. The S-48 is equally at home in cafes and bars or museums and themed attractions –... -
Page 6: S-48 Subwoofer
Page 6 of 24 2.0 – S-48 Subwoofer S-48 FEATURES & BENEFITS • Signature EM Acoustics “maximum headroom” design approach ensures Low profile VLF installation subwoofer consistency of performance regardless of SPL level. • Multiple M10 threaded flying points for temporary and permanent installation. -
Page 7: Simulation
Tutorials for Ease Focus 3 are available from with the application itself. For training on the design and implementation of S-48 subwoofers including the specific use of Ease Focus 3, please contact your local distributor. -
Page 8: Safety Considerations
General Considerations in use Loudspeaker systems are potentially dangerous objects if used incorrectly. Please ensure that you read this section fully, and contact EM Acoustics or your local dealer should you be in any doubt over correct operation procedures. Personal Injury Never stand in the immediate vicinity of loudspeakers when in use at high level. -
Page 9: Rigging And Suspension
Larger distances may be required for some older cathode ray tube displays. S-48 User Manual v2 November 2019... -
Page 10: Rigging & Mounting Options
Page 10 of 24 5.0 – Rigging & Mounting Options 5.1 – S-48 Cabinet Hardware Overview M10 threaded flying point Rear access door S-48 User Manual v2 November 2019... -
Page 11: Stacking S-48 Subwoofers
Page 11 of 24 5.2 – Stacking S-48 subwoofers The S-48 is not directly intended to be stacked, as it is envisaged that they would be used in distributed systems. Should stacks be required, ensure they are secured with straps or similar. -
Page 12: Powering The System
6.1 - Amplifier and Processing Requirements 6.1.1 - Connections The S-48 requires only a single amplifier channel. Inputs to the S-48 enclosure are on Neutrik SpeakON NL4 as illustrated below. Two-core cable should be used for connecting S-48 subwoofers, and the connections are... -
Page 13: Amplifier Requirements
Page 13 of 24 6.1.3 – Amplifier Requirements The S-48 is a powerful subwoofer, making use of some of the most advanced drive units available in the industry today. It is good practice to ensure that your amplifier can deliver... -
Page 14: Presets And Settings
The presets are intended to be a starting point for your system and will almost certainly require tuning on-site dependent on room characteristics, the rest of your system design and the system voicing you are aiming for. The S-48 is designed with a significant amount of system headroom, so applying EQ is perfectly acceptable. -
Page 15: Use With The Dq Series Advanced System Amplifiers
Page 15 of 24 6.3 - Use with the DQ Series Advanced System Amplifiers The S-48 will perform best when using DQ Series advanced system amplifiers, as not only are they state-of-the-art amplifiers, but the onboard DSP provides appropriate high/low pass filter settings and limiters to get the best from your subwoofers. -
Page 16: System Connectivity
Because pins 2+/2- are linked through inside all EM Acoustics loudspeakers, using a 4-core cable to one loudspeaker (carrying two different signals) allows a crossover cable to be used to link out of the first loudspeaker into another, thereby feeding it from a separate signal. -
Page 17: Servicing Information
To replace the grille, position the grilles on the front of the S-48 (logo badge should be in the bottom left hand corner) and ensure the threaded fittings on the grille are lined up with the mounting holes. -
Page 18: S-48: Removing The Front Drive Units
Page 18 of 24 7.2 – S-48: Removing the front drive units TOOLS REQUIRED: 13mm socket Complete step 7.1 above to remove the grille. Using a 13mm socket, remove the eight M6 Nyloc nuts that secure each of the drive units. Ensure that you remove the flat washers as well as the nuts before you remove the drive unit. -
Page 19: S-48: Removing The Rear Drive Units
Page 19 of 24 7.3 – S-48: Removing the rear drive units TOOLS REQUIRED: 5mm Allen Key & 13mm socket Complete steps 7.1 & 7.2 above to remove the grilles and the front drive unit (s). Using a 5mm Allen key, remove the ten M6x30 socket cap machine screws securing the rear door. - Page 20 (flat washer in contact with the door, spring washer between flat washer and the bolt head). Replace the front drive unit(s) as described in 7.2 above. Replace the grille as described in 7.1 above. S-48 User Manual v2 November 2019...
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Page 21: Appendix A - Technical Specifications
Page 21 of 24 Appendix A – Technical Specifications S-48 compound isobaric subwoofer Dimensions (HxWxD): 308 x 530 x 450mm (12.1” x 20.9” x 17.7”) Net/Shipping Weight: 22kg/24kg (48.4/52.8lbs) Frequency Response (+/- 3dB) 35Hz – 150Hz Dispersion Omnidirectional Drive Units: 4 x 2”... - Page 22 Page 22 of 24 Appendix B – Technical Drawings S-48 User Manual v2 November 2019...
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Page 23: Appendix C - Spare Parts List
Page 23 of 24 Appendix C – Spare Parts List Order Code Description 01A026 DU-806 replacement 16 ohm 8” LF drive unit 04A084 RFG-S14 replacement grille/fabric pair for S-48 S-48 User Manual v2 November 2019... -
Page 24: Appendix D - Warranty Information
Serial numbers must be quoted in all correspondence relating to the claim. EM Acoustics or its representatives are in no way liable for any loss or damage in transit, and hence it is recommended that the sender insure the shipment. EM Acoustics will pay for return freight should the repair be covered under warranty.
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