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EMS Series
User Manual – v2.0
EMS-81/EMS-81i
EMS-121/EMS-121w/EMS-121i/EMS-121h
EMS-152/152w
EMS-215/EMS-215i
EM Acoustics Loudspeakers
Building 74, Dunsfold Park
Cranleigh, Surrey
GU6 8TB, UK
Phone +44 (0) 1483 266520
Fax +44 (0) 1483 275619
www.emacoustics.co.uk
_________________________________________________________________________________________
Copyright EM Acoustics 2006
1
EMS Series User Manual
www.emacoustics.co.uk
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Table of Contents
Related Manuals for EM Acoustics EMS Series
Summary of Contents for EM Acoustics EMS Series
- Page 1 User Manual – v2.0 EMS-81/EMS-81i EMS-121/EMS-121w/EMS-121i/EMS-121h EMS-152/152w EMS-215/EMS-215i EM Acoustics Loudspeakers Building 74, Dunsfold Park Cranleigh, Surrey GU6 8TB, UK Phone +44 (0) 1483 266520 Fax +44 (0) 1483 275619 www.emacoustics.co.uk _________________________________________________________________________________________ Copyright EM Acoustics 2006 EMS Series User Manual www.emacoustics.co.uk...
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Page 2: Table Of Contents
DA-1 Amplifier Installation ………………………………………………………………………………………………………………………16 Maintenance EMS-81 Drive Unit Service ………………………………………………………………………………………………………….17 EMS-121 Drive Unit Service ………………………………………………………………………………………………………. 18 EMS-152 Drive Unit Service ………………………………………………………………………………………………………. 19 EMS-215 Drive Unit Service ………………………………………………………………………………………………………. 20 Warranty ……………………………………………………………………………………………………………………………………………. 21 Appendix A – Technical Specifications …………………………………………………………………………………………………… 22 EMS Series User Manual www.emacoustics.co.uk... -
Page 3: Thank You
INTRODUCTION Thank you Thank you for purchasing a product from the acclaimed EMS Series from EM Acoustics. The EMS Series products have been carefully designed and rigorously tested to ensure years of flawless operation and unprecedented sonic quality. Flexibility is the key factor with EMS products, and consequently they are at home within a wide variety of applications from live and portable applications, through to cafes, bars, nightclubs, theatres and conference centres. -
Page 4: Product Range Overview
5. Reinstate the grille as described in the Maintenance section on Page 10. As with all EM Acoustics full-range products, no active controller or programmed EQ is required for correct operation. For demanding applications, a 50Hz high pass filter is recommended to increase drive unit headroom however this is not essential for normal operation. -
Page 5: Ems-121 Passive Two-Way Fullrange Enclosure
– both permanent and temporary. As with all EM Acoustics full-range products, no active controller or programmed EQ is required for correct operation. For demanding applications, a 40Hz high pass filter is recommended to increase drive unit headroom however this is not essential for normal operation. -
Page 6: Ems-152 Passive Two-Way Fullrange Enclosure
Integral to the enclosure are four M10 flying points to allow suspension using a variety of different rigging methods. As with all other EM Acoustics fullrange products, no external processing or equalisation is required to allow the loudspeaker to function correctly. -
Page 7: Ems-215 Subwoofer
The EMS-215i is the dedicated installation version of the EMS-215 with no handles, wheels or polemounts, and with a single NL4MPR connector and a four-way barrier strip instead of two NL4MPR connectors. The EMS-215 can also accept the new DA-1 digital power amplifier module if required. EMS Series User Manual www.emacoustics.co.uk... -
Page 8: System Set-Up
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. Professional loudspeaker systems are capable of producing damage-inducing sound pressure levels, and hence care should be taken when setting your system up, particularly when it comes to loudspeaker placement within a venue. -
Page 9: Cabling & Amplifier Selection
Should you be in any doubt whatsoever, please contact your local dealer who will be able to refer you to a suitable rigging company. Cabling and Amplifier Selection The EMS Series products are designed to be used with professional power amplifiers providing the following power outputs: EMS-81... -
Page 10: Mounting & Rigging Options
Series 100 mounting products. For array assembly, the DFB-81 and DFB-121 dual flybars are available from your EM Acoustics representative. These steel plates allow two enclosures to be bolted together, with an angle variable from 0 degrees to 40 degrees splay between the two enclosures. -
Page 11: Vertical Flying Cradle Use
Additional strength can be gained by tightening the M5 locking bolt on each side (marked “D”) using an 8mm spanner. Rotate the enclosure to the desired position and tighten the bolt securing the attachment device. EMS Series User Manual www.emacoustics.co.uk... -
Page 12: Horizontal Flying Cradle Use
Once the enclosure is in place, lock off the attachment device to prevent the enclosure rotating, and use the M5 locking bolts (marked “C” in Fig 1) to secure completely. EMS Series User Manual www.emacoustics.co.uk... -
Page 13: Dual Enclosure Flybar Use
Assuming that this point is secured onto a solid structure, this down-tilt angle point can be used as a secondary safety for the cluster. Alternatively, remove one of the countersunk M10 bolts on the rear of the enclosures and fit another M10 eyebolt as a safety point. EMS Series User Manual www.emacoustics.co.uk... -
Page 14: Ems-152 Rigging Options
VFA-152 (marked “C” in Fig 1). By adjusting the knob at the rear of the VFA-152 using a 19mm socket (point “D” on Fig 1), the hanging point can be moved. This adjustment moves the suspension fulcrum relative to the enclosure’s centre of gravity, and hence will adjust the suspension angle. EMS Series User Manual www.emacoustics.co.uk... -
Page 15: Ommimount/Powerdrive Bracket Use
If you are in any doubt whatsoever about how to safely suspend your loudspeakers, do not hesitate to contact your EM Acoustics representative who will be able to refer you to a qualified rigging company for advice. -
Page 16: Amplifier Installation
Installation of the DA-1 Power Amplifier Module The EMS-152 fullrange loudspeaker and EMS-215 subwoofer can accept the EM Acoustics DA-1 digital power amplifier module. One DA-1 is used to drive one loudspeaker, in the following configurations: EMS-152 – bridge-mono mode, with the two amplifier channels driving the internal passive circuitry. -
Page 17: Maintenance
MAINTENANCE Your EM Acoustics loudspeakers have been rigorously tested before they leave our factory, to ensure that they give you a lifetime of flawless operation. Should any of your drive units fail and need replacing, please follow the guidelines below. -
Page 18: Ems-121 Drive Unit Service
M6 socket-head bolts. 5. Reinstate the grille by easing into one side slot, then gently applying a curve to the grille to ease it into the other side. EMS Series User Manual www.emacoustics.co.uk... -
Page 19: Ems-152 Drive Unit Service
5. Sit a new diaphragm in place, and reinstate the screws. Reconnect the cables and run a sine wave signal through the enclosure to ensure that the diaphragm is properly centred before applying final tension to the diaphragm screws. 6. Reposition the rear door and retighten the M5 countersunk bolts. EMS Series User Manual www.emacoustics.co.uk... -
Page 20: Ems-215 Drive Unit Service
7. Reinstate the grille by easing into one side slot, then gently applying a curve to the grille to ease it into the other side. 8. Reinstate the six Pozidrive screws to secure the grille in place. EMS Series User Manual www.emacoustics.co.uk... -
Page 21: Warranty
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. -
Page 22: Appendix A - Technical Specifications
APPENDIX A – TECHNICAL SPECIFICATIONS EM Acoustics operates a continuous process of research and development, and as such reserves the right to alter specifications without notice. EMS-81 Enclosure Type: 2-way, reflex loaded Dimensions (HxWxD, mm/ins): 461/18.1 x 308/12.1 x 268/10.6... - Page 23 DFB-121 dual flying bar DU-1202 replacement LF drive unit CDU-1001 replacement HF compression drive unit RK-1202 re-cone kit for DU-1202 RD-1001 replacement diaphragm for CDU-1001 RFG-121 replacement foam/grille UN-1/121 UniPhase crossover network – EMS-121 version EMS Series User Manual www.emacoustics.co.uk...
- Page 24 DFB-152 dual flying bar VFA-152 Variable Angle flying bracket DU-1503 replacement LF drive unit CDU-2001 replacement HF compression drive unit RK-1503 re-cone kit for DU-1503 RD-2001 replacement diaphragm for CDU-2001 RFG-152 replacement foam/grille UN-2/152 UniPhase crossover network EMS Series User Manual www.emacoustics.co.uk...
- Page 25 3 x 35mm polemount sockets Grille: Acoustically transparent black foam on expanded steel mesh Options: Colours Connectors EMS-215i (install version) Spares & Accessories: DU-1501 replacement LF drive unit RK-1501 re-cone kit for DU-1501 RFG-215 replacement foam/grille EMS Series User Manual www.emacoustics.co.uk...
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