EM Acoustics HALO System User Manual Download Page 29

Page 

29

 of 

39

 

 

 

HALO system  User Manual 

V2.2 August 2010 

 

5.0 - Ground Stacking a HALO System 

The HALO system can be easily ground-stacked where necessary.  The methods described 
below describe ground-stacking the system both with & without subwoofers. 

Method A – With HALO-S subwoofers 

The best way to imagine a ground-stacked HALO system is simply a flown system upside 
down.  So, the first step is to move the base board from the HALO-S enclosure due to go 
on  the  bottom  of  the  stack.    In  normal  use,  this  board  would  be  on  the  bottom  of  the 
enclosure (so that when sat on its feet, the EM logo is on the left of the enclosure as you 
look at it.  Remove the four countersunk bolts in the board and move this board to the top 
of  the  enclosure.    You  can  then  position  the  HALO-S  enclosure  in  the  desired  location, 
ready to assemble the system.  Additional HALO-S subwoofers can be added to the stack if 
required, by removing the base board completely, turning the enclosure upside down and 
stacking in place as before. 

The SLG-HALO grid must now be prepared as in the section above, turned upside-down 
and secured to the HALO-S as before.  You are now ready to assemble the HALO array 
itself. 

As the HALO enclosures have to be turned upside down, unless you have already prepared 
these  upside  down  in  their  flightcases  or  wheelboards,  we  would  recommend  attaching 
the  enclosures  one  at  a  time.   Simply  repeat  the  procedures  detailed  above for  a  flown 
system, attaching each enclosure one at a time.   

Method B – Without HALO-S subwoofers 

For ground-stacking HALO systems without the HALO-S, 

only

 use the MFG-HALO grid as 

the FG-HALO grid will not provide a stable enough base for the system.  Prepare the grid 
as detailed in the flying arrays section above, turn it upside down and securely strap the 
grid  down  to  a  level  &  stable  surface.    You  can  then  attach  your  HALO  enclosures.    As 
before, as the HALO enclosures have to be turned upside down, unless you have already 
prepared  these  upside  down  in  their  flightcases  or  wheelboards,  we  would  recommend 
attaching the enclosures one at a time.  Simply repeat the procedures detailed above for a 
flown system, attaching each enclosure one at a time.   

IMPORTANT NOTE: 

In  order  to  maintain  the  stability  of  the stacked system,  do  not  ground-stack 
more than 8 HALO enclosures high. 

Summary of Contents for HALO System

Page 1: ...HALO System User Manual V2 2 August 2010...

Page 2: ...g HALO Systems Page 9 4 1 Assembling Flown Arrays with subwoofers Page 12 4 2 Assembling Flown Arrays without subwoofers Page 22 4 3 Assembling Flown Arrays with the FG HALO grid Page 28 5 0 Ground St...

Page 3: ...Electrical Safety EN60065 1993 RECYCLING This product and its packaging constitute the applicable product according to the WEEE directive Please ensure that at the end of the working life of this prod...

Page 4: ...on driver coupled with the patent pending diffraction manifold means HALO offers a vastly superior consistent 90 degree horizontal coverage pattern Added to this is the incredibly intuitive flying sys...

Page 5: ...aphragm 6 5 drive units handle midrange frequencies linked via an internal passive crossover to two LF 6 5 drive units to extend the enclosure response down to 75Hz b HALO S compact flyable subwoofer...

Page 6: ...2 5mm2 29m 58m 116m 4 0mm2 44m 88m 176m 6 0mm2 66m 132m 264m IMPORTANT NOTE REGARDING SYSTEM IMPEDANCE The HALO HF drive unit drops to 4 ohms across a reasonable portion of its operating band This ca...

Page 7: ...nning four HALO enclosures in parallel from the same amplifier ch 1 LF MF ch 2 HF we would recommend an amplifier capable of delivering 2500 3000 watts into a 2 ohm load NOTE A small amplifier working...

Page 8: ...strongly suggest that the HALO settings shown in bold below are not altered from our recommended settings as this can result in poor performance and or damage to the HALO components The other two EQ p...

Page 9: ...em The use of HALO flying hardware with other manufacturers systems may compromise the safety standards and EM Acoustics and its parent company are in no way liable for any loss damage or injury cause...

Page 10: ...ndary suspension points Safety Inspections Carefully inspect all flying system components prior to use for defects or signs of damage prior to assembling a HALO array If any components damaged or you...

Page 11: ...osure OR 20 x HALO enclosure 1 x SLG HALO grid 1 x HALO S enclosure OR 16 x HALO enclosure 1 x SLG HALO grid 2 x HALO S enclosures MFG HALO Safety factor of 6 16 x HALO enclosure OR 12 x HALO enclosur...

Page 12: ...Page 12 of 39 HALO system User Manual V2 2 August 2010 4 1 Assembling Flown Arrays with Subwoofers...

Page 13: ...e and are used for flying both HALO S and HALO enclosures Two different sets of front links are provided larger links for HALO S subwoofers and smaller links for HALO enclosures The alternate links ar...

Page 14: ...ts on the upper ball lock pin and is locked in place for use by the lower pin Ensure when fitting the new link into the grid that the thicker steel boss faces to the inside of the MFG HALO grid It is...

Page 15: ...y for use IMPORTANT NOTE For both front rear links the locking ball lock pin MUST be in position prior to attempting to fly the system Step Two Selecting fitting pick up links The MFG HALO grid provid...

Page 16: ...positions for the pick up link with complete flexibility Repeat this process for the second pick up link IMPORTANT NOTE Both 3 8 ball lock pins MUST be secured on each pick up link being used 3 25 to...

Page 17: ...MFG HALO flying grid prepared and suspended from your primary load bearing point you are ready to assemble your HALO array In this example we are using HALO S subwoofers therefore this is the first p...

Page 18: ...e the board and retain for array disassembly If adding a second subwoofer repeat the procedure above If you are only using one subwoofer proceed to step 4 below Step 4 Attaching the SLG HALO sub link...

Page 19: ...on secure the grid to the bottom of the HALO S using the four ball lock pins secured to the grid itself The last step prior to attaching your HALO enclosures is to set the desired splay angle for the...

Page 20: ...he use of flightcases or the WB HALO wheelboard shown below as groups of HALO enclosures can be pre assembled resulting in much faster array assembly As shown below position your HALO enclosures benea...

Page 21: ...lay Angles The HALO rigging system is designed to be extremely easy and intuitive to use whilst retaining the highest standards of safety Inter enclosure splay can easily be adjusted using the single...

Page 22: ...nk positions Front Drop Links these removable and are used for flying both HALO S and HALO enclosures Two different sets of front links are provided larger links for HALO S subwoofers and smaller link...

Page 23: ...ts on the upper ball lock pin and is locked in place for use by the lower pin Ensure when fitting the new link into the grid that the thicker steel boss faces to the inside of the MFG HALO grid It is...

Page 24: ...h allow for both single point and dual point pick up These links are stored for transit on the side of the MFG grid and are secured in place by two 3 8 ball lock pins Fit the links into the groove dow...

Page 25: ...sure with whichever method you use for pick up that you have the MFG HALO grid facing the right direction indicated by the FRONT arrows on each side of the grid The last step prior to attaching your H...

Page 26: ...he use of flightcases or the WB HALO wheelboard shown below as groups of HALO enclosures can be pre assembled resulting in much faster array assembly As shown below position your HALO enclosures benea...

Page 27: ...lay Angles The HALO rigging system is designed to be extremely easy and intuitive to use whilst retaining the highest standards of safety Inter enclosure splay can easily be adjusted using the single...

Page 28: ...included for just this reason allowing greater flexibility should one need to break the array It is appreciated that whilst it is not acoustically ideal to break the array in some ways slight loss of...

Page 29: ...n the section above turned upside down and secured to the HALO S as before You are now ready to assemble the HALO array itself As the HALO enclosures have to be turned upside down unless you have alre...

Page 30: ...ully remove the four machine screws securing the MF drive unit in place NOTE Be aware when working on one MF unit not to damage the surface of the other unit The use of short Allen keys is recommended...

Page 31: ...rews holding it in place 8 Inspect the front of the HF drive unit diaphragm for any metal fragments the conductors are exposed and as such small conductive fragments can cause the unit to short circui...

Page 32: ...unit reconnect the cables and carefully seat the drive unit in the mounting hole Ensure the bolt holes line up It is advisable to ensure each bolt has started in its thread before tightening any Once...

Page 33: ...igh excursion neodymium MF 2 x 6 5 EPS paper cone composite neodymium in an infinite baffle enclosure HF 160mm x 60mm Air Motion Transducer coupled with patent pending variable diffraction manifold Im...

Page 34: ...e recommended below 150Hz 24dB Octave L R Flying Integrated HALO flying system Enclosure 15 18mm Baltic Birch plywood rebated screwed glued Finished in textured paint Grille Powder coated hex punched...

Page 35: ...Page 35 of 39 HALO system User Manual V2 2 August 2010 Appendix B Technical Drawings HALO 3 way compact line array enclosure...

Page 36: ...Page 36 of 39 HALO system User Manual V2 2 August 2010 HALO S dual 15 flyable subwoofer...

Page 37: ...drive unit 8 ohms 01A016 DU 602 6 5 neodymium MF flat radiator drive unit 16 ohms 01B017 HALO AMT AMT drive unit 01C013 RK 601 8 ohm recone kit for DU 601 01C014 RK 602 16 ohm recone kit for DU 602 f...

Page 38: ...on any misrepresentation by the seller Products which contain anything other than the original components or EM Acoustics factory supplied spare parts Products on which the serial number has been rem...

Page 39: ...ive components and as such are not liable for any incidental and consequential damages including without limitation injury to persons damage to property or loss of use This warranty is exclusive and n...

Reviews: