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ELECTRO-VOICE

®

Xi-A Rigging Manual

Xi-A Series Loudspeaker System
Flying Manual

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Содержание Sound Reinforcement System Xi-1123A/106F

Страница 1: ...ELECTRO VOICE Xi A Rigging Manual Xi A Series Loudspeaker System Flying Manual ...

Страница 2: ...ngs and Safety Factors 10 4 2 Special Safety Considerations for Xi A Loudspeaker Arrays 12 4 3 Special Safety Considerations for Rigging Strap Assemblies 14 4 3 1 Redundant Attachment Points 14 4 3 2 Special Considerations for Polyester Webbing 14 4 4 Special Safety Considerations for Grid Building Structural Supports 14 V Rigging Inspection and Precautions 15 5 1 Xi A System Components 15 5 1 1 X...

Страница 3: ... original printing As such the information may not be directly applicable in other countries Furthermore the regulations and requirements governing rigging hardware and practices may be superseded by local regulations It is the responsibility of the user to ensure that any Electro Voice loudspeaker system is suspended overhead in accordance with all current federal state and local regulations All ...

Страница 4: ...ough the use of two grid straps per cabinet The GS 1B grid straps are recommended The Xi A enclosures are equipped with two pieces of track which have multiple positions where the grid straps may be attached The linear positioning of the attachment points along the track front to back determines the vertical angling of the enclosure The remaining ends of the grid straps are then secured to cross m...

Страница 5: ...igned for optimal implementation of the Electro Voice L track flying systems The GS 1B includes a double stud swivel ring fitting on one end for attachment to the enclosure and a safety hook on the other end The safety hook may be attached to 5 8 inch shackles or may be secured directly to the grid through a 7 8 inch diameter hole in the grid bar stock material The LS 1B LS 2B and LS 3B have doubl...

Страница 6: ... 0 8 8 1 5 9 1 e r u s o l c n E e g r a L y a W 3 F 4 6 A 3 8 1 1 i X 0 0 0 6 3 5 7 8 9 2 7 6 8 8 2 2 7 0 3 2 8 2 9 3 1 9 9 6 9 7 1 5 1 8 4 1 6 0 8 2 6 0 8 8 1 5 9 1 e r u s o l c n E e g r a L a r t x E y a W 3 F 4 6 A 3 5 1 2 i X 9 3 5 8 4 5 7 8 9 2 7 6 8 8 2 2 7 0 3 2 8 2 9 3 1 9 0 7 2 4 2 8 3 4 5 1 6 0 8 2 6 0 8 8 1 0 4 2 g n i y l F n o N r e f o o w b u S A 1 9 1 1 i X 0 0 0 6 3 5 7 8 9 2 7...

Страница 7: ...l strength ratings of the single stud fittings are approximately one half that of the double stud fittings These lower ratings however are completely sufficient for suspending lighter loads overhead for example when flying one or two of the smaller lighter Xi A loudspeaker systems in permanent installations making the single stud fittings attractive lower cost alternatives to the double stud fitti...

Страница 8: ... round cutout in the track and slide the fitting to the desired position Center the main body of the fitting over one of the track teeth i e with the stud foot positioned directly under one tooth of the track Release the fitting body The body of the fitting should lock into the round cutouts in the track with the fitting body retracting to its normal position allowing the hole for the safety locki...

Страница 9: ...lign the top rear corner of an Xi A cabinet with the bottom rear corner of an Xi A cabinet above it the rigging straps at the bottom of the upper cabinet are shifted along the rigging track until the rear corners of the adjacent cabinets are in alignment A number of examples are presented in the following section that will demonstrate both the mechanical and acoustical aspects of an array design w...

Страница 10: ...ng fittings linked with a threaded chain connector or a carabineer snap hook The RS 2B single stud ring fittings could be used in lighter weight applications With the Xi A loudspeaker systems oriented with the rigging track on the sides at the cabinets a longer rigging strap is required between the cabinets to minimize the spacing between the systems Typically the LS 1B is used for this task If ho...

Страница 11: ...f others IV Strength Ratings Safety Factors and Special Safety Considerations 4 1 Strength Ratings and Safety Factors Electro Voice provides strength ratings for the Xi A loudspeaker systems in terms of the working load limit rating based on an 8 1 minimum safety factor The working load limit rating is defined as the maximum allowable force that may be applied to the mechanical component The rated...

Страница 12: ...he track is mounted 437 pounds at a pull angle of 45 and 375 pounds at a pull angle of 90 i e parallel to the surface on which the track is mounted When used with single stud fittings as used on the RS 2B rigging accessory the working load limit rating of each individual rigging point is 250 pounds at any pull angle The working load limit rating of the overall enclosure is 1 000 pounds Electro Voi...

Страница 13: ...d but rather shifted slightly towards the high frequency side of the box As a result when an Xi 1152A is hung sideways i e with the cabinet oriented so the rigging track is on the sides the load on the rigging strap on the high frequency side of the Xi 1152A system would be slightly higher than the load on the horn compression driver side On the other hand the load would be distributed equally bet...

Страница 14: ...g Manual 13 Figure 4 1a Working Load Limit Strength Rating for Xi 1153A Xi 1183A Xi 2153A Xi 1191AF Xi 2181AF Xi 1122MHA and Xi 2122MHA Figure 4 1b Working Load Limit Strength Rating for Xi 1122A Xi 1152A Xi 1123A and Xi 2123A ...

Страница 15: ...al Supports When suspending loudspeaker arrays from grids or building supports the associated rigging hardware employed i e rigging straps slings chains wire rope assemblies chains etc may not hang at a 0 vertical angle These vertical angle differences will result in forces i e tension loads in that rigging hardware that are greater than the weight suspended below These increased forces must be ta...

Страница 16: ...mbly Prior to each use inspect the grid assembly and associated hardware for any cracks deformations broken welds corrosion or missing or damaged components that could reduce the grid assembly strength Replace any damaged grid assemblies Never exceed the limitations or maximum recommended load intended for grid assembly design 5 2 2 Chain Hoists Prior to each use inspect the chain hoist and associ...

Страница 17: ...hain wire ropes slings shackles hooks fittings etc for any cracks deformation broken welds slipping crimps fraying abrasion knots corrosion chemical damage loose screws missing or damaged components which would reduce the maximum strength specified by the component manufacturer Replace any damaged mechanical components ...

Страница 18: ...g rigging strap assemblies that use the RS 1B and RS 2B fittings may be ordered from Sound Manufacturing Inc P O Box 1907 Big Bear Lake CA 92315 USA 909 878 9104 www smirigging com smiller smirigging com General Rigging Supplies A wide variety of standard and specialty rigging hardware components for both touring and permanent installation applications are available from Sound Manufacturing Inc P ...

Страница 19: ...d Loudspeaker Array Elements Journal of the AES April 1990 B 2 Mechanical References A brief list of references covering the topics of rigging and engineering mechanics is presented below 1 W E Rossnagel L R Higgins J A MacDonald Handbook of Rigging for Construction and Industrial Operations McGraw Hill Book Company New York NY USA 1988 2 A Jensen H Chenoweth Applied Engineering Mechanics McGraw H...

Страница 20: ...nformation contact the Service Repair Department at 800 685 2606 For technical assistance contact Technical Support at 866 78 AUDIO Specifications subject to change without notice All Other International Locations 952 884 4051 Fax 952 736 4212 www electrovoice com Telex Communications Inc www telex com Printed in U S A Telex Communications Inc 10 2004 Part Number 534993 Rev B ...

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