EM Acoustics ST-215 Product User Manual
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EM Acoustics ST-215 Product User Manual

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ST-215 Subwoofer
Product User Manual
v2 November 2019
L O U D S P E A K E R S
R E
D E F I N E D

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Summary of Contents for EM Acoustics ST-215

  • Page 1 ST-215 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...

  • Page 2: Table Of Contents

    FG-HALO-B Instruction Label – Side ....................17 5.6 - GS-HALO-B ............................18 6.0 – System Setup ............................19 6.1 – Preparing ST-215 subwoofers for flying or stacking ............19 6.1.1 – Extending the rigging links ....................19 6.1.2 – Cardioid Use ..........................20 6.1.3 –...
  • Page 3 7.5.2 - System Examples with the DQRack ................47 8.0 – Servicing Information ........................49 8.2 – ST-215: Removing the drive units ..................50 8.3 – ST-215: Replacing a Rigging flying pin ................51 Appendix A – Technical Specifications ....................52 ST-215 User Manual...
  • Page 4 Page 4 of 57 ST-215 medium format flyable subwoofer ..................52 Appendix B – Technical Drawings ......................53 Appendix C – Spare Parts List ........................56 Appendix D – Warranty Information ....................... 57 Limited Warranty ..........................57 Warranty Coverage ..........................57 Returning your EM Acoustics loudspeaker.................

  • 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. ST-215 User Manual v2 November 2019...

  • Page 6: Introduction

    Page 6 of 57 1.0 - Introduction Thank you for purchasing the ST-215 subwoofer from EM Acoustics. This product has been designed and rigorously tested to give you the utmost in sonic performance and many years of reliable, trouble-free operation. Please take the time to read this user manual thoroughly to ensure you get the best performance from your system and to ensure you set it up correctly and safely.

  • Page 7: St-215 & Accessories

    550 (21.7) x 772 (30.4) x 752 (29.6) mm/(ins) NET/SHIPPING WEIGHT: 73/77kg (161/169lbs) FG-HALO-B The FG-HALO-B is the master flying grid for the both the ST-215 the HALO-B Master Flying Grid system and provides a means of safely and swiftly flying arrays of ST-215 subwoofers.

  • Page 8: Wc-T215

    WC-T215 wheelcart. Castor Set For single subwoofer transport, tour-grade castors can be fitted to the rear of the enclosure to allow the ST-215 to be easily moved around. CHAIN-HALO-B The CHAIN-HALO-B assembly is intended to go between a motor and Extension Lift Chain the FG-HALO-B or CG-HALO-B pickup link.

  • Page 9: Simulation

    For safety and acoustic reasons, it is advised that users familiarize themselves with Ease Focus 3. Along with providing the user with accurate simulations for setting up ST-215 subwoofers, it also provides importing safety information with regards to load limits.

  • Page 10: Safety Considerations

    Do not modify or alter the ST-215 hardware or accessories, nor use them in any way other than that described in this manual. Rigging components supplied as part of the ST-215 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: Rigging System Overview

    Page 12 of 57 5.0 – Rigging System Overview 5.1 – ST-215 Cabinet Hardware Overview Lifting & Carrying Handle Rigging Link (retracted) Rigging Link Lock Pin Enclosure Link Pin Floor Runner Stacking Recess M20 Threaded Polemount M8 Threaded Fitting ST-215 User Manual...

  • Page 13: Fg-Halo-B

    Page 13 of 57 5.2 - FG-HALO-B [11] [12] ST-215 User Manual v2 November 2019...
  • Page 14 Page 14 of 57 [1] – Front Link Attachment Point This clevis forms the area where HALO-B or ST-215 enclosure front links should be engaged. A 0.313” ball- lock pin secures each link in place. [2] – Rear Link Attachment Point This clevis forms the area where ST-215 subwoofer rear links should be engaged.

  • Page 15: Fg-Halo-B Instruction Label - Spine, Left Side

    Page 15 of 57 FG-HALO-B Instruction Label – Spine, Left side ST-215 User Manual v2 November 2019...

  • Page 16: Fg-Halo-B Instruction Label - Spine, Right Side

    Page 16 of 57 FG-HALO-B Instruction Label – Spine, Right side ST-215 User Manual v2 November 2019...

  • Page 17: Fg-Halo-B Instruction Label - Side

    Page 17 of 57 FG-HALO-B Instruction Label – Side ST-215 User Manual v2 November 2019...

  • Page 18: Gs-Halo-B

    [3] – ST-215 Attachment Point Three M8 clearance holes are provided in the GS-HALO- B surface to secure it to an ST-215 subwoofer in ground stack use. Use the three supplied M8 lobe knobs. [4] – M8 lobe knob Three M8 lobe knobs to secure to an ST-215.

  • Page 19: System Setup

    Page 19 of 57 6.0 – System Setup 6.1 – Preparing ST-215 subwoofers for flying or stacking 6.1.1 – Extending the rigging links Step 2. Extend all four rigging links Step 1. Remove the Link Lock pin from the top of each rigging assembly Step 3.

  • Page 20: Cardioid Use

    FG-HALO-B flying grid, consult EASE Focus 3 for the most suitable pickup point to use to ensure the column hangs straight. For all sections of this manual describing flying or stacking ST-215 subwoofers, the procedure is identical when assembling cardioid subwoofer arrays.

  • Page 21: Using The Wc-T215 Transit Wheelcart

    Enclosure Link pin, and the Link Lock pin (step 2). This ensures the second subwoofer is securely locked to the first one and the cart is stable. This process can be repeated to add a third subwoofer to the cart if required. ST-215 User Manual v2 November 2019...

  • Page 22: Flying 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. ST-215 User Manual v2 November 2019...
  • Page 23 2 above. Remove the lower enclosure link pins on the first ST-215 and lower the first subwoofer on top of the second, ensuring that the links engage in the clevises in each corner of the subwoofer.

  • Page 24: Flying Halo-B Underneath St-215 Subwoofers

    Page 24 of 57 6.2.2 – Flying HALO-B underneath ST-215 subwoofers Step 1. Prepare the second FG-HALO-B flying grid. Step 1A. Remove the sub link lock pins in all four corners of the FG-HALO-B. Step 1B. Rotate each of the sub links to their upright positions.
  • Page 25 Step 3. Lift the second FG-HALO-B up to the bottom of the ST-215, ensuring that the four sub links engage into the clevises in the bottom of the subwoofer. Replace the four enclosure link pins to secure the FG-HALO-B to the bottom of the subwoofer column.
  • Page 26 Step 5. Prepare your first cart of HALO-B enclosures as detailed in the HALO-B user manual. Position this cart of HALO-B underneath your flown ST-215 column. Lower the subwoofer column toward the HALO-B enclosures. Step 6. Ensuring the HALO-B front links engage...
  • Page 27 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. ST-215 User Manual v2 November 2019...
  • Page 28 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 of the HALO-B user manual to remove the wheelcart and add more elements as required. ST-215 User Manual v2 November 2019...

  • Page 29: Ground Stacking St-215 Subwoofers

    Page 29 of 57 6.3 – Ground Stacking ST-215 subwoofers 6.3.1 – Using ST-215 subwoofers alone ST-215 subwoofers should be inverted for ground stacking – so that the Step 1. subwoofer sits on its runners, and the polemount is visible.

  • Page 30: Ground Stacking With Halo-B & Fg-Halo-B

    Page 30 of 57 6.3.2 - Ground Stacking with HALO-B & FG-HALO-B ST-215 subwoofers should be inverted for ground stacking – so that the Step 1. subwoofer sits on its runners, and the polemount is visible. Step 2. If ground stacking more than one ST-215, invert the second subwoofer and sit it on top of the first, so its runners sit into the recesses on the first subwoofer cabinet.
  • Page 31 FG-HALO-B. Lower the FG-HALO-B into position so that each of the sub links engage in the clevis in each corner of the ST-215. Step 5. Replace the Enclosure Link pins on all four corners to lock the FG-HALO-B to the ST-215.
  • Page 32 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. ST-215 User Manual v2 November 2019...
  • Page 33 It will rest on the splay lock pin of the lower enclosure, preventing it from falling too far. Step 12. Insert the Rear Enclosure Link pin which will join the two enclosures together. ST-215 User Manual v2 November 2019...
  • Page 34 Angle Set pin into the corresponding location hole. Step 14. Repeat steps 10-13 with further HALO-B enclosures to complete your ground stack, up to a maximum of 8 HALO-B elements. ST-215 User Manual v2 November 2019...

  • Page 35: Ground Stacking With Halo-B & Gs-Halo-B

    Section 6.4.3 above. Step 2. Position the GS-HALO-B on top of the ST-215, so that the three M8 clearance mounting holes line up with the M8 threaded fittings in the top of the ST-215.
  • Page 36 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. ST-215 User Manual v2 November 2019...

  • Page 37: Using The Chain-Halo-B Lifting Chain

    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. ST-215 User Manual v2 November 2019...

  • Page 38: Fitting Castors

    Page 38 of 57 6.5 – Fitting castors The ST-215 can be fitted with an optional set of four tour-grade castors for ease of movement as single subwoofers. The carton should contain: 4pcs 32 x 100mm heavy duty castor 17pcs M8 x 30 hex head set screw...

  • Page 39: Powering The System

    Page 39 of 57 7.0 – Powering the System The ST-215 subwoofer can be powered from any amplifier with the relevant high & low pass filter, and limiter settings. However, due to the self-contained nature of the package, the use of DQ Series advanced system amplifiers is highly recommended. The use of DQ...

  • Page 40: Amplifier Requirements

    Page 40 of 57 7.1.3 – Amplifier Requirements The ST-215 is a very 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...

  • Page 41: Presets And Settings

    DQ Series amplifier. 7.2.2 – Cardioid Array Preset The ST-215 can be used to create cardioid arrays by ensuring that one in three ST-215 subwoofers are physically reversed, and the appropriate ST-215 Cardioid preset is loaded into the amplifier.

  • Page 42: Fir Latency

    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 ST-215 is designed with a significant amount of system headroom, so applying EQ is perfectly acceptable.

  • Page 43: Use With The Dq Series Advanced System Amplifiers

    Page 43 of 57 7.3 - Use with the DQ Series Advanced System Amplifiers The ST-215 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 44: System Connectivity

    120m 7.4.2 - 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 45: Crossover Cable Use

    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 46: 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. ST-215 User Manual v2 November 2019...

  • Page 47: System Examples With The Dqrack

    Page 47 of 57 7.5.2 - System Examples with the DQRack Given below are two examples of possible ways ST-215 subwoofers can be used with a DQRack. There are of course many possible combinations, depending on the application and the equipment available – so these two examples are by no means comprehensive.
  • Page 48 Page 48 of 57 The system example below illustrates a smaller stereo HALO-B/ST-215 system being driven off one DQRack. Using the NL8 amplifier outputs, one output is used to feed each of the left/right HALO-B hangs, and the last output is used for subwoofers. Again, a cardioid array has been created, with the two front-firing subwoofers running in parallel on each side.

  • Page 49: Servicing Information

    To replace the grille, position the grille on the front of the ST-215 (logo badge should be on the left of the enclosure when in a flown configuration) and ensure the threaded fittings on the grille are lined up with the mounting holes.

  • Page 50: St-215: Removing The Drive Units

    Page 50 of 57 8.2 – ST-215: Removing the drive units TOOLS REQUIRED: 5mm Allen key Complete step 8.1 above to remove the grille. Using a 5mm Allen key, remove the eight M6x30 socket cap screws that secure the drive units. Ensure that you remove the spring washers from the recesses as well as the machine screws.

  • Page 51: St-215: Replacing A Rigging Flying Pin

    Page 51 of 57 8.3 – ST-215: Replacing a Rigging flying pin TOOLS REQUIRED: 2.5mm Allen key All the rigging flying pins are held in place by M3 socket cap machine screws, with captive Nyloc nuts within the assembly. As such, they can be easily removed and replaced in the field. Using a 2.5mm Allen key, undo the machine screw to remove it.

  • Page 52: Appendix A - Technical Specifications

    TC-T215-2 dual enclosure padded transit cover TC-T215-3 triple enclosure padded transit cover * - The DQ6 and DQ10 do not provide sufficient power for maximum headroom for the ST-215 and as such should only be used in lower SPL environments.

  • Page 53: Appendix B - Technical Drawings

    Page 53 of 57 Appendix B – Technical Drawings ST-215 User Manual v2 November 2019...
  • Page 54 Page 54 of 57 ST-215 User Manual v2 November 2019...
  • Page 55 Page 55 of 57 ST-215 User Manual v2 November 2019...

  • Page 56: Appendix C - Spare Parts List

    Page 56 of 57 Appendix C – Spare Parts List Order Code Description 01A031 DU-1508 replacement 8 ohm 15” LF drive unit 04A051 RFG-S215 replacement grille/fabric for ST-215 05A097 PIN-0.3125/0.625 ball-lock flying pin – all rigging ST-215 User Manual v2 November 2019...

  • Page 57: 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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