EMS-81X Compact Passive Loudspeaker User Manual – v1.0 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 2012 1 EMS-81X User Manual www.emacoustics.co.
CONTENTS Introduction Thank you ...……………………………………………………………………………………………………………………………. 3 Unpacking ……………………………………………………………………………………..……………………………………….. 3 Declaration of Conformity …………………….…………………………………………………………………………………… 3 Product Overview EMS-81X passive two-way enclosure ..............…………………………………………………………………….……… 4 System Set-up Safety Considerations………………………………………………………………………………………………………………… 5 Cabling & Amplifier selection ……………………………………………………………………………………………………… 6 Protective DSP Settings .................
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.
PRODUCT OVERVIEW EMS-81X compact passive loudspeaker The EMS-81X is a compact, versatile, passive loudspeaker product designed for a wide variety of compact and discreet sound reinforcement applications. It features a high-power 8” (203mm) neodymium LF drive unit in a reflex enclosure, and a 1.7” diaphragm, 1” (25mm) exit neodymium high frequency compression drive unit coupled to a 90° x 60° rotatable waveguide.
SYSTEM SET-UP Safety Considerations 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.
personnel following safe working practice. Should you be in any doubt whatsoever, please contact your local dealer who will be able to refer you to a suitable rigging company.
Protective DSP Settings The EMS-81X requires no DSP program to function correctly. However, excessive low frequency information will cause the LF drive unit’s excursion to increase, which can result in damage to your loudspeaker. The higher you raise the high pass filter on an EMS-81X, the more headroom and overall sound pressure level output there is available.
MOUNTING & RIGGING OPTIONS Rigging Hardware & Accessories The EMS-81X has four options for mounting and suspension, both for temporary use and permanent fixed installation. The EMS-81X contains five M8 threaded fixing points around the enclosure, to enable suspension using forged shoulder eyebolts (minimum thread length 20mm) or the optional FC-81Xv vertical or FC-81Xh horizontal flying cradles.
Attachment of the FC-81Xv vertical flying cradle Using the supplied M8 hexagon head bolts, align the mounting holes in the inner yoke with the mounting points on the top or the bottom of the enclosure. Ensure that both the flat and spring washers are used – the flat washer should be in contact with the cradle. Tighten the bolts to ensure a solid fit. Once the desired angle of the loudspeaker is set, tighten the knobs on the cradle to lock the position in place.
Attachment of OmnimountTM or PowerdriveTM Installation Brackets It is strongly suggested that you position your loudspeakers, then mark & drill the holes in the mounting walls before you attach the bracket to the loudspeaker, as it is much easier to check positioning and fit of the holes without the weight of the loudspeaker. The EMS-81X is designed to work with OmniMountTM Series 30 or PowerDriveTM Series 75 products.
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. EMS-81X: Low Frequency Drive Unit 1. Using a 3mm Allen key, undo the four M4 machine screws top & bottom of the enclosure (2 each end). Gently remove the grille from the front of the enclosure. 2.
WARRANTY Limited Warranty This EM Acoustics loudspeaker product is warranted to the original end-user purchaser and all subsequent owners for a period of three years from the original date of purchase. Warranty Coverage This warranty covers defects in materials and workmanship. It does not include: Damage or failure caused by accident, misuse, neglect, abuse or modification by any person other than an authorised EM Acoustics representative.
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-81X ENCLOSURE TYPE: DIMENSIONS (HxWxD): NET/SHIPPING WEIGHT: FREQUENCY RESPONSE1: SENSITIVITY2: DISPERSION3: DRIVE UNITS: POWER HANDLING: MAXIMUM SPL4: NOMINAL IMPEDANCE: CROSSOVER: CONNECTORS: ENCLOSURE: RIGGING & HARDWARE: GRILLE: OPTIONS: ACCESSORIES: SPARE PARTS: two-way passive, reflex loaded 462 (18.2) x 262 (10.
