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BI-AMPLIFIED SYSTEM

 

In a bi-amplified system, array shading is accomplished by connecting separate amplifier channels to the HF 
section of each MG1932 / MG1928. In larger arrays, a single amplifier channel may be used for two adjacent  
loudspeakers. Array shading is then accomplished by adjusting the gain of the HF amplifier channels.
For extremely precise control over system performance, it may also be desirable to dedicate an individual 
system controller output to each HF amplifier channel.

ARRAY CONFIGURATION SELECTOR (ACS)

 

Below is an example of applying the ACS in a three-speaker array. In this particular configuration, the ACS on
the top speaker is set at +3 dB, the middle speaker at 0 dB, and the bottom speaker -3 dB.

Please visit www.jblpro.com/tunings for latest versions of our recommended system tunings or call customer 
service at Toll Free 1-800-852-5776.

SYSTEM PROCESSOR TUNINGS

15

+3 dB

0 dB

-3 dB

Audience

Summary of Contents for M G - A F

Page 1: ...U s e r s G u i d e MARQUIS GALAXY MG SERIES M G 1 9 3 2 M G 1 9 1 8 S M G 1 9 1 5 M M G 1 9 2 8 M G 1 9 2 8 W H M G 1 9 1 5 S M G A F M G S M A F...

Page 2: ...2...

Page 3: ...y long term exposure to intense ultra violet UV light The MG Series speakers can generate considerable energy When placed on a slippery surface such as polished wood or linoleum the speaker may move d...

Page 4: ...he Array Configuration Selector ACS a feature that provides amplitude shading see page 14 15 when the system is used in passive mode Integral rigging hardware a dual angle pole socket and an accessory...

Page 5: ...hms Bi amp HF 8 ohms m o c o r p l b j w w w t a e l b a l i a v a s g n i n u T s g n i n u T e v i t c A d o o w y l p h c r i b y l p 1 1 m m 8 1 e r u s o l c n E Suspension Mounting 4 Suspension...

Page 6: ...28 is the ideal choice when line array perfor mance is needed but the venue size doesn t call for the very long throw characteristics of larger line arrays The MG1928 offers all the same features as t...

Page 7: ...1 4 2 L B J x 2 r e v i r D F H Nominal Impedance Passive 8 Ohms Bi amp LF 8 Ohms Bi amp HF 16 Ohms m o c o r p l b j w w w t a e l b a l i a v a s g n i n u T s g n i n u T e v i t c A d o o w y l p...

Page 8: ...he suspension system is designed for full compatibility with the MG1932 line array speaker system and the MG AF array frame DIMENSIONAL DRAWINGS FOR MG1918S Dimensions in mm inches 8 749 29 5 597 23 5...

Page 9: ...socket for optional SS4 BK pole d o o w y l p h c r i b y l p 3 1 m m 8 1 r a l u g n a t c e R e r u s o l c n E Finish 5 h s i n i f x e l F a r u D k c a l B Grille 6 t n e r a p s n a r t l a c i...

Page 10: ...928 Line Array System and with the MG SMAF array frame The M20 mounting plate allows for utilization of the adjustable pole mount SS4 BK WARNING The MG1928 is the only system intended for use with the...

Page 11: ...e l F a r u D k c a l B h s i n i F l a c i t s u o c a h t i w l e e t s d e t a r o f r e p e g u a g 8 1 k c a l b d e t a o c r e d w o P e l l i r G transparent black foam backing Input Connecto...

Page 12: ...h current switch mounted alongside the NL4 input connector in one of the handle cups An additional NL4 connector is mounted in the other handle cup for a convenient loop thru connection minimizing cab...

Page 13: ...e d w o P e l l i r G black screen backing Input Connectors Neutrik Speakon NL 4 x2 one on each end Dimensions H x W x D 629 mm x 432 mm x 324 mm 375 mm stage height 24 75 in x 17 in x 12 75 in 14 75...

Page 14: ...distribution of acoustic energy to the audience is far more uniform Amplitude shading of an MG1932 MG1928 array may be accomplished in passive or bi amplified systems ARRAY CONFIGURATION SELECTOR ACS...

Page 15: ...rol over system performance it may also be desirable to dedicate an individual system controller output to each HF amplifier channel ARRAY CONFIGURATION SELECTOR ACS Below is an example of applying th...

Page 16: ...t it onto the tripod stand or pole One or two MG1932 cabinets may be mounted onto either a JBL SS2 BK tripod stand or with the SS4 BK adjustable pole mount to their companion MG1918S or SRX718S subwoo...

Page 17: ...input panel should be set to the Short Throw 3 dB position while the upper speaker will be set to either Short Throw 3 dB or Mid Throw 0 dB Place the speakers on the pole or tripod one at a time Be su...

Page 18: ...process ARE YOU NEW TO RIGGING If you are new to rigging you should do the following Read and study JBL Technical Note Volume 1 Number 14 Basic Principles for Suspending Loudspeaker Systems available...

Page 19: ...MG SMAF MAXIMUM ARRAY SIZE MG AF Array Frame Maximum number of MG1918S in array 6 5 4 3 2 1 0 Maximum number of MG1932 in array 0 1 2 3 4 5 6 MG SMAF Array Frame MG AFARRAY FRAME The following table...

Page 20: ...e and solid SUSPENSION IN PERMANENT INSTALLATIONS For permanent installation applications an MG array may be suspended using M10 eyebolts Only load rated forged shoulder eyebolts are to be used A kit...

Page 21: ...line of speakers as a system The working load limit depends on the configuration of array frame and speakers being suspended Please refer to the DEPLOYING THE SYSTEM section of this user guide for ma...

Page 22: ...suspended Please refer to the DEPLOYING THE SYSTEM section of this user guide for maximum allowable load limits when using the MG SMAF frame The MG SMAF array frame has been specifically designed to...

Page 23: ...JBL WARRANTY The JBL Warranty on professional loudspeaker products will follow the warranty policy implemented in China market Please refer to the warranty card for details 23...

Page 24: ...Part Number 5069690 03 2016 JBL Professional 8500 Balboa Blvd Northridge CA 91329 USA...

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