EM Acoustics HALO B System User Manual
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EM Acoustics HALO B System User Manual

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System User Manual
v2 November 2019
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Summary of Contents for EM Acoustics HALO B

  • Page 1 System User Manual v2 November 2019 L O U D S P E A K E R S D E F I N E D...

  • Page 2: Table Of Contents

    FG-HALO-B Instruction Label – Side ....................19 5.3 – CG-HALO-B ............................20 CG-HALO-B Instruction Label - Left side ..................22 CG-HALO-B Instruction Label - Right side ................23 5.4 – EXT-HALO-B ............................. 24 5.5 – SM-HALO-B ............................25 HALO B User Manual v2 November 2019...
  • Page 3 7.2.2 - FIR Latency ..........................67 7.2.3 - Geometric Delay ........................67 7.2.4 - Applying EQ..........................67 7.3 - Use with the DQ Series Advanced System Amplifiers ............. 68 7.3.1 - Connections ..........................68 HALO B User Manual v2 November 2019...
  • Page 4 Appendix B – Technical Drawings ......................80 Appendix C – Spare Parts List ........................87 Appendix D – Warranty Information ....................... 88 Limited Warranty ..........................88 Warranty Coverage ..........................88 Returning your EM Acoustics loudspeaker................. 88 HALO B User Manual v2 November 2019...

  • Page 5: 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. HALO B User Manual v2 November 2019...

  • Page 6: Introduction

    EM Acoustics representative. The HALO B system draws from its bigger brother HALO A, and utilises our patent-pending multi-drive unit plan wave simulation manifold. This device combines the energy of four 1”...

  • Page 7: Halo-B System Components

    Page 7 of 88 2.0 – HALO-B System Components The HALO B system comprises one loudspeaker model, a compatible subwoofer and associated flying hardware and accessories. Details of the different components are given below – all enclosures and flying grids work on the same principles and use similar if not identical hardware.

  • Page 8: Cg-Halo-G

    HALO-B as a front-fill enclosure. In installation applications, the GS-HALO-B can be used to mount pairs or single elements from ceilings if required. Weight 10.8kg / 23.8lbs HALO B User Manual v2 November 2019...

  • Page 9: Safety-Halo-B

    510mm and the following SWL: 1 tonne 0-45 degrees 1.4 tonne 45-60 degrees The angle between the chain legs must not exceed 60 degrees. Weight 1.6kg / 3.5lbs HALO B User Manual v2 November 2019...

  • Page 10: Safety Considerations

    EM Acoustics is in no way liable for any loss, damage or injury caused by such practice. Do not modify or alter the HALO B hardware or accessories, nor use them in any way other than that described in this manual. Rigging components supplied as part of the HALO B system are in no way interchangeable and should not be used as such.

  • Page 11: Secondary Safeties

    In most cases, annual independent tests & inspections carried out by a suitably approved and qualified inspector will be required. EM Acoustics recommends detailed logbooks be kept of all inspections and load tests to ensure an accurate record is kept of the testing for each EM Acoustics rigging accessory.

  • Page 12: Simulation

    Tutorials for Ease Focus 3 are available from with the application itself. For training on the design and implementation of HALO B including the specific use of Ease Focus 3, please contact your local distributor.

  • Page 13: Rigging System Overview

    5.1 - HALO-B Cabinet Rigging Hardware Lifting & Carrying Handle Front Link (Extended) Front Link Lock Pin Front Enclosure Link Pin Rear Link Angle Set Pin Splay Lock Pin Rear Enclosure Link Pin Splay Lock Pin stow point HALO B User Manual v2 November 2019...

  • Page 14: Halo-B Rear Link Labels

    Page 14 of 88 HALO-B Rear Link Labels Link stow pin point when elements rigged above. Angle Indicator. Splay lock pin stow position for derigging. Splay lock pin location. Rear enclosure link pin location. HALO B User Manual v2 November 2019...

  • Page 15: Fg-Halo-B

    Page 15 of 88 5.2 - FG-HALO-B [11] [12] HALO B User Manual v2 November 2019...
  • Page 16 When using a single pick point, reference Ease Focus 3 [12] – Pickup Links (Half Position) for the pick point for the desired angle. For a half position, line up the red arrow between the appropriate numbers on the spine HALO B User Manual v2 November 2019...

  • Page 17: Fg-Halo-B Instruction Label - Spine, Left Side

    Page 17 of 88 FG-HALO-B Instruction Label – Spine, Left side HALO B User Manual v2 November 2019...

  • Page 18: Fg-Halo-B Instruction Label - Spine, Right Side

    Page 18 of 88 FG-HALO-B Instruction Label – Spine, Right side HALO B User Manual v2 November 2019...

  • Page 19: Fg-Halo-B Instruction Label - Side

    Page 19 of 88 FG-HALO-B Instruction Label – Side HALO B User Manual v2 November 2019...

  • Page 20: Cg-Halo-B

    Page 20 of 88 5.3 – CG-HALO-B [10] HALO B User Manual v2 November 2019...
  • Page 21 When using a single pick point, reference Ease Focus 3 [10] – Pickup Links (Half Position) for the pick point for the desired angle. For a half position, line up the red arrow between the appropriate numbers on the spine HALO B User Manual v2 November 2019...

  • Page 22: Cg-Halo-B Instruction Label - Left Side

    Page 22 of 88 CG-HALO-B Instruction Label - Left side HALO B User Manual v2 November 2019...

  • Page 23: Cg-Halo-B Instruction Label - Right Side

    Page 23 of 88 CG-HALO-B Instruction Label - Right side HALO B User Manual v2 November 2019...

  • Page 24: Ext-Halo-B

    EASE Focus simulation. Links must be secured with the two 0.375” ball-lock pins attached. [3] – 2-ton shackle Use one or two 2-tonne shackles from the CG-HALO-B to suspend the array. HALO B User Manual v2 November 2019...

  • Page 25: Sm-Halo-B

    EASE Focus simulation. Links must be secured with the two 0.375” ball-lock pins attached. The SM-HALO-B is supplied with a single 2-ton bow [4] – 2-ton shackle shackle for suspension. HALO B User Manual v2 November 2019...

  • Page 26: Gs-Halo-B

    Three M8 lobe knobs to secure to an ST-215. These knobs are stowed in the captive threaded bushes at the rear of the GS-HALO-B. [5] – Installation Points For permanent installation, five 11mm diameter mounting holes are provided in the GS-HALO-B surface. HALO B User Manual v2 November 2019...

  • Page 27: System Setup

    The pin in this location does however prevent the splay link from having a complete range of movement, so do not use this location when setting angles prior to flying the array – just leave the pin hanging on its lanyard. HALO B User Manual v2 November 2019...

  • Page 28: Flying Halo-B Systems

    6.1.1, Remove the Front and Rear Enclosure Link Pins Step 2. Remove the WC-HALO-B Rear Link Pin. (Leave the link in the stowed transit position) Step 3. Lower first enclosure onto WC-HALO-B and locate on the front links. HALO B User Manual v2 November 2019...
  • Page 29 HALO-B Rear link so it inserts into the receptacle on the HALO-B splay rigging. Insert Rear Enclosure Link pin on HALO-B to lock in place. Step 6. Insert the WC-HALO-B Link Pin to lock in the upright position. HALO B User Manual v2 November 2019...
  • Page 30 Insert the Front Enclosure Link pins on both sides to secure the fronts of the enclosures together. Step 9. Remove the Rear Enclosure Link pin from the upper HALO-B and the Angle Set pin from the lower HALO-B. HALO B User Manual v2 November 2019...
  • Page 31 Repeat steps 7-10 to add further HALO-B enclosures up to a maximum of four per WC-HALO-B. The optional TC-HALO-B padded transit cover fits over completed WC-HALO-B with four enclosures to add additional protection during transit. HALO B User Manual v2 November 2019...

  • Page 32: Flying From Wc-Halo-B With Fg-Halo-B

    Remove the Splay Link Attachment pin from its location in the spine of the FG-HALO-B. HALO B User Manual v2 November 2019...
  • Page 33 HALO-B spine to prevent you lowering too far. Insert the Splay Link Attachment pin back into its location on the grid spine, thereby securely attaching the FG-HALO-B to the stack of HALO-B elements. HALO B User Manual v2 November 2019...
  • Page 34 Once the array is clear of the ground, reinstate the Splay Lock pins into their splay lock positions – this ensures the angles are now fixed and cannot move. HALO B User Manual v2 November 2019...
  • Page 35 Reinsert the Front Enclosure Link pins to lock the two blocks together at the front. HALO B User Manual v2 November 2019...
  • Page 36 This will lock the angles of the bottom four enclosures. Be aware, the splay link on the first element of the lower four should remain retracted at this point. HALO B User Manual v2 November 2019...
  • Page 37 Once it is hanging, move the Splay Lock pin on the 4 element from stow location to its use location to secure the whole array. HALO B User Manual v2 November 2019...
  • Page 38 Link pins on both sides to remove the wheelcart entirely. Lower it to the floor and set aside. Step 15. Repeat steps 9 to 14 again to continue to assemble the array according to your simulation – up to a maximum of 24 elements. HALO B User Manual v2 November 2019...

  • Page 39: Flying From Wc-Halo-B With Cg-Halo-B

    Step 2. Follow the same procedure as outlined within section 6.2.2 to attach to HALO-B enclosures. IMPORTANT NOTE: CG-HALO-B ACCESSORIES CAN BE USED TO SUSPEND A MAXIMUM OF 16 ENCLOSURES IN A FLOWN CONFIGURATION HALO B User Manual v2 November 2019...

  • Page 40: Using The Ext-Halo-B Extension Bar

    Step 2. Follow the same procedure as outlined within section 6.2.2 to attach to HALO-B enclosures. IMPORTANT NOTE: SM-HALO-B ACCESSORIES CAN BE USED TO SUPPORT A MAXIMUM OF FOUR HALO-B ENCLOSURES HALO B User Manual v2 November 2019...

  • Page 41: Flying Halo-B With St-215 Subwoofers

    Step 2B. Slide the four links upwards into their outward position. Step 2C. Replace four link pins their corresponding pin holes, locking the four links extended. Your ST-215 is now ready to be flown. HALO B User Manual v2 November 2019...
  • Page 42 Replace the enclosure link pins in the first subwoofer, locking the together. Repeat procedure to add more subwoofers as necessary. HALO B User Manual v2 November 2019...
  • Page 43 FG-HALO-B at each position is intended to make this very simple. Step 6C. Replace the sub link lock pins into their lock positions, fixing the links in their upright positions and making the grid ready to attach. HALO B User Manual v2 November 2019...
  • Page 44 FG-HALO-B to the bottom of the subwoofer column. Step 9. Remove the front enclosure link pins, ready to attach the HALO-B enclosures. Also, remove the splay link attachment pin in the FG-HALO-B spine. HALO B User Manual v2 November 2019...
  • Page 45 Ensuring the HALO-B front links engage in the FG-HALO-B clevis, secure the HALO-B cart to the FG-HALO-B by replacing the pins. Do not attempt to connect the splay link of the HALO-B enclosures yet. HALO B User Manual v2 November 2019...
  • Page 46 Once the array is clear of the floor and the HALO-B elements are all hanging at their desired angles, reinstate the Splay Lock pins on the top three HALO-B enclosures – this will prevent the angles closing. HALO B User Manual v2 November 2019...
  • Page 47 Once it is in position, replace the Splay Link attachment pin on the FG-HALO-B to secure the rear of the HALO-B hang. Continue with the procedure for flying HALO-B as detailed in section 6.2.2 to remove the wheelcart and add more elements as required. HALO B User Manual v2 November 2019...

  • Page 48: Ground Stacking Halo-B

    EASE Focus simulation, and insert the Angle Set pin into the appropriate hole. Pay close attention to the label on the FG-HALO-B which illustrates the difference between indicated angle and achieved angle on the FG-HALO-B. HALO B User Manual v2 November 2019...
  • Page 49 It will rest on the splay lock pin of the lower enclosure, preventing it from falling too far. Step 7. Insert the Rear Enclosure Link pin which will join the two enclosures together. HALO B User Manual v2 November 2019...
  • Page 50 8 HALO-B elements. FOR GROUND STACKS GREATER THAN TWO HALO-B ELEMENTS, THE FG-HALO-B MUST BE SECURED TO THE SURFACE IT IS RESTING ON BY RATCHET STRAPS OR SIMILAR. HALO B User Manual v2 November 2019...

  • Page 51: Ground Stacking With Cg-Halo-B

    Repeat the steps in 6.4.1 above to build the ground stack, up to a maximum of 6 HALO-B elements. FOR GROUND STACKS GREATER THAN TWO HALO-B ELEMENTS, THE CG-HALO-B MUST BE SECURED TO THE SURFACE IT IS RESTING ON BY RATCHET STRAPS OR SIMILAR. HALO B User Manual v2 November 2019...

  • Page 52: Ground Stacking With St-215 & Fg-Halo-B

    Step 4. Reinstate both the Enclosure Link and Link Lock pins on all four corners to lock the subwoofers together. Repeat this process if adding more subwoofers. HALO B User Manual v2 November 2019...
  • Page 53 Remove the front Enclosure Link pins, and the Splay Link pin on the spine, from the FG-HALO-B so it is ready to receive HALO-B enclosures. HALO-B enclosures can now be added to the ground stack as described in Section 6.4.1 above. HALO B User Manual v2 November 2019...

  • Page 54: Ground Stacking With Gs-Halo-B

    6.4.5 – Using GS-HALO-B as an installation bracket GS-HALO-B can be used to fly up to pairs of HALO-B enclosures in an installation environment. Additional mounting holes in the GS-HALO-B plate are provided for this purpose. HALO B User Manual v2 November 2019...

  • Page 55: Ground Stacking With St-215 & Gs-Halo-B

    Prepare the first HALO-B enclosure as described in the previous sections – extend the front rigging links, invert the enclosure and position so that the front rigging links engage into the clevises on either side of the GS-HALO-B. HALO B User Manual v2 November 2019...
  • Page 56 FOR ANY GROUND STACK SYSTEM, ENSURE THE STACK IS ON LEVEL, STABLE GROUND AND CANNOT TOPPLE OVER. IF IN DOUBT, SECURE THE STACK USING RATCHET STRAPS OR SIMILAR TO ENSURE THERE IS NO RISK TO ANY PERSON NEAR THE ARRAY. HALO B User Manual v2 November 2019...

  • Page 57: Using The Chain-Halo-B Lifting Chain

    CG-HALO-B pickup link. The CHAIN-HALO-B has a chain hook included so that the chain length can be adjusted as necessary. Using the CHAIN-HALO-B allows you to create sufficient space below the motor for the chain bag to sit safely. HALO B User Manual v2 November 2019...

  • Page 58: Using Halo-B As A Downfill For Halo-A Systems

    PB-HALO-B. Step 4. Insert the HALO-B Front Link Attachment pins back in place to secure the front of the PB-HALO- B to the top HALO-B enclosure. HALO B User Manual v2 November 2019...
  • Page 59 Step 8. Line the HALO-A hang up with the PB-HALO-A front links. Once completely lined up, replace the Front Enclosure Link pins to secure the front of the PB-HALO- bottom HALO-A enclosure. HALO B User Manual v2 November 2019...
  • Page 60 Continue to lift until the PB-HALO-A rear link engages in the receptacle for the Rear Link Attachment of the bottom HALO-A enclosure. Insert the Rear Enclosure Link pin in the bottom HALO-A to secure the PB-HALO-A in place. HALO B User Manual v2 November 2019...
  • Page 61 As each enclosure is locked in place, use the Angle Set pin to ensure each element is correctly angled as per your EASE Focus simulation. Continue to repeat Step 10 up to a maximum of six HALO- B enclosures in the underhang. HALO B User Manual v2 November 2019...

  • Page 62: Fitting An Inclinometer

    M4 countersunk machine screws and Nyloc nuts supplied with the the grid you are using. Locate the inclinometer on the mounting plate, and insert the four screws as indicated. Secure them underneath with M4 Nyloc nuts, and tighten them accordingly. HALO B User Manual v2 November 2019...

  • Page 63: Powering The System

    7.1 - Amplifier and Processing Requirements 7.1.1 - Connections HALO B is a bi-amplified system – requiring two amplifier channels to drive it correctly and active processing on both channels to ensure the system performs as intended. Inputs to the HALO-B enclosure are on Neutrik SpeakON NL4 as illustrated below.

  • Page 64: Amplifier Requirements

    FIR technology. Any amplifier supplied with your HALO-B system will be FIR-enabled, however for older units please check with EM Acoustics directly referencing the unit’s serial number. Alternatively, by connecting any DQ Series amplifier to the System Engineer software the FIR status can be determined –...

  • Page 65: Presets And Settings

    As illustrated, both examples above would use the same preset file recalled into the amplifier, all that is different is the number of amplifier channel pairs required – all of which require the same preset recalled. HALO B User Manual v2 November 2019...
  • Page 66 A, and one module of amplifier B As illustrated, regardless of the combination of amplifiers used, or how the loudspeakers are wired, the preset to be recalled is determined by the number of elements in the array. HALO B User Manual v2 November 2019...

  • Page 67: Fir Latency

    EQ filters applied to only one section of an array will impose a group delay on that part of the system, which will bring further acoustical issues. HALO B User Manual v2 November 2019...

  • Page 68: Use With The Dq Series Advanced System Amplifiers

    As mentioned above, these presets are intended to be a starting point and additional work may be required depending on the venue, the style of content and the end result you are looking for. HALO B User Manual v2 November 2019...

  • Page 69: System Connectivity

    Recommended maximum cable lengths are given below: Conductor Area Maximum Recommended Cable Length 2 ohms 4 ohms 8 ohms 2.5mm (14 AWG) 4.0mm (12 AWG) 6.0mm (10 AWG) 120m HALO B User Manual v2 November 2019...

  • Page 70: Available Cable Accessories

    Page 70 of 88 7.4.3 - Available Cable Accessories There are a number of bespoke cable assemblies which can be supplied by EM Acoustics to ensure correct wiring for your system, both using DQ Series amplifiers alone and also using the DQRack touring solution.

  • Page 71: Use With The Dqrack

    Detailed below are some examples of how you can use the DQRack to power a system appropriately in a touring environment, and the various accessories and other parts that would be required. HALO B User Manual v2 November 2019...

  • Page 72: System Examples With The Dqrack

    2 x SPLIT-HALOB-19P 2 x male-female 19-pole connector cables (16 cores minimum) of suitable length 18 x NL4-NL4 (4-core cable) link cables – optimum length 0.5m 19-pole 19-pole male-female male-female cable cable SPLIT-HALOB-19P SPLIT-HALOB-19P HALO B User Manual v2 November 2019...
  • Page 73 Many other combinations are possible, using the various adapters available – splits can be put in place either near the DQRack or near the loudspeakers, depending on what is required in your setup configuration. HALO B User Manual v2 November 2019...

  • Page 74: Servicing Information

    Page 74 of 88 8.0 – Servicing Information All HALO B components can be removed for service purposes if required, using the minimum of tools. 8.1 - HALO-B: Removing the grille TOOLS REQUIRED: 5mm Allen key Lie the enclosure on its’ back and remove the two M6x20 socket cap screws in each end of the grille.

  • Page 75: Halo-B: Removing Waveguide/Lf Drive Unit Covers

    Replace the relevant machine screws with their washers and ensure every screw has started turning smoothly in its thread prior to tightening. Check that the throat edge is not overhanging the HF drive unit exits, and then begin to tighten. HALO B User Manual v2 November 2019...

  • Page 76: Halo-B: Removing The Lf Drive Unit

    Tighten opposing bolts, working around the drive unit until all bolts are appropriately tightened. Replace the waveguide/drive unit cover parts and the grille as described above. HALO B User Manual v2 November 2019...

  • Page 77: Halo-B: Removing The Hf Assembly

    Ensure that all machine screws (M6 and M8) are started in their threads before tightening any. Once all the screws are started, tighten them all to complete the process. Replace the waveguide/drive unit cover parts, and the grille as described above. HALO B User Manual v2 November 2019...

  • Page 78: Halo-B: Replacing A Front Rigging Flying Pin

    It is imperative that you contact EM Acoustics before attempting this for detailed instructions and relevant replacement machine screws, as removing the rear rigging assembly is a potential safety issue.

  • Page 79: Appendix A - Technical Specifications

    Measured in half-space at 2m with 4W sine wave input and referenced to 1m. Nominal dispersion, measured in an anechoic environment and averaged over stated bandwidth. Calculated and verified by subjective listening test of familiar program material. HALO B User Manual v2 November 2019...

  • Page 80: Appendix B - Technical Drawings

    Page 80 of 88 Appendix B – Technical Drawings HALO B User Manual v2 November 2019...
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  • Page 87: Appendix C - Spare Parts List

    CDU-1005 replacement 16 ohm 1” exit HF drive unit 04A048 RFG-HALO-B replacement grille/fabric for HALO-B 05A097 PIN-0.3125/0.625 ball-lock flying pin – HALO-B front rigging 05A087 PIN-0.375/0.813 ball-lock flying pin – HALO-B splay rigging HALO B User Manual v2 November 2019...

  • Page 88: 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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