JBL BRX 300 Series Quick reference guide

JBL BRX 300 SERIES 1
SYSTEM DEPLOYMENT GUIDE
SYSTEM DEPLOYMENT GUIDE
12.2021
BRX308-LA
BRX325SP
BRX308-ACC
BRX308-AF
BRX308-PM
BRX 300
SERIES

JBL BRX 300 SERIES 2
SYSTEM DEPLOYMENT GUIDE
TABLE OF CONTENTS
1. SAFETY 3
2. ORDERING INFORMATION 6
3. BRX 300 SYSTEM 7
4. SYSTEM APPLICATION GUIDE- GROUND STACKED MODE 9
5. SYSTEM APPLICATION GUIDE- POLE MOUNT MODE 10
6. SYSTEM APPLICATION GUIDE- FLOWN MODE 11

JBL BRX 300 SERIES 3
SYSTEM DEPLOYMENT GUIDE
Before using a JBL BRX Series system, please review the following for important informaon on safety and protecon of your investment.
2.1 - SAFETY INSTRUCTIONS
1. 1. Read these instrucons
2. Keep these instrucons
3. Heed all warnings
4. Follow all instrucons
5. Do not expose the product to direct rain or sea spray
6. Clean only with a dry cloth
7. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat
8. Only use aachments / accessories specied by the manufacturer
9. Use only with a cart, stand, tripod, bracket, or table specied by the manufacturer or sold with the apparatus. When a cart is used, use
cauon when moving the cart / apparatus combinaon to avoid injury from p-over
10. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as liquid
has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate nor-
mally, or has been dropped
11. Contact JBL Professional for advanced servicing issues
12. CAUTION- DO NOT PERFORM ANY SERVICING UNLESS YOU ARE QUALIFIED TO DO SO
13. Prolonged exposure to excessive SPL can cause hearing damage: the loudspeaker is easily capable of generang sound pressure levels
(SPL) sucient to cause permanent hearing damage to performers, producon crew and audience members. Cauon should be taken to
avoid prolonged exposure to SPL in excess of 90 dB
14. Read the System Rigging Manual before installaon and use of the product.
15. Do not block any venlaon openings. Install in accordance with the manufacturer’s instrucons.
16. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the oth-
er. A grounding-type plug has two blades and a third grounding prong. The wide an electrician for replacement of the obsolete outlet.
17. Protect the power cord from being walked on or pinched, parcularly at plugs, convenience receptacles, and the point where they exit
from the apparatus.
18. Unplug this apparatus during lightning storms or when unused for long periods of me.
19. To completely disconnect this apparatus from the AC mains, disconnect the power supply cord plug from the AC receptacle.
20. “WARNING – TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.”
21. Do not expose this equipment to dripping or splashing and ensure that no object s lled with liquids such as vases, are placed on the
equipment.
22. The main plug of the power supply cord shall remain readily operable.
SAFETY

JBL BRX 300 SERIES 4
SYSTEM DEPLOYMENT GUIDE
2.2 - GENERAL HARDWARE INFORMATION
Any hardware used in an overhead suspension applicaon must be load rated for the intended use. Generally, this type of hardware is avail-
able from rigging supply houses, industrial supply catalogs and specialized rigging distributors. Local hardware stores do not usually stock
these products. Hardware that is intended for overhead suspension will comply with ASME B30.20 and will be manufactured under product
traceability controls. Compliant hardware will be referenced with a working load limit (WLL) and a traceability code.
2.3 - IMPORTANT SAFETY WARNING
The informaon in this secon has been assembled from recognized engineering data and is intended for informaonal purposes only. None
of the informaon in this secon should be used without rst obtaining competent advice with respect to applicability to a given circum-
stance. None of the informaon presented herein is intended as a representaon or warranty on the part of JBL. Anyone making use of this
informaon assumes all liability arising from such use.
All informaon presented herein is based upon materials and pracces common to North America and may not directly apply to other coun-
tries because of diering material dimensions, specicaons and/or local regulaons. Users in other countries should consult with appropriate
engineering and regulatory authories for specic guidelines.
Correct use of all included hardware is required for secure system suspension. Careful calculaons should always be performed to ensure
that all components are used within their working load limits before the array is suspended. Never exceed the maximum recommended load
rangs.
THIS APPARATUS CONTAINS POTENTIALLY LETHAL VOLTAGES. TO PREVENT ELECTRIC SHOCK OR
HAZARD, DO NOT REMOVE CHASSIS, INPUT MODULE OR AC INPUT COVERS. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lighng ash with Arrowhead Symbol within an equilateral triangle, is intended to alert the user to the presence of uninsulated “Danger-
ous Voltage” within the product’s enclosure that may be of sucient magitude to onstute risk of electric shock to persons.
The exclamaon point within an equilateral triangle is intended to alert the user to the presence of important operangand maintenance(ser-
vicing) informaon in the literature accompanying the product.

JBL BRX 300 SERIES 5
SYSTEM DEPLOYMENT GUIDE
2.4 - INSPECTION AND MAINTENANCE
Before suspending any speaker system always inspect all components (enclosure, rigging frames, pins, eyebolts, track ngs,
etc.) for cracks, deformaons, corrosion or missing/loose/damaged parts that could reduce strength and safety of the array. Do
not suspend the speaker unl the proper correcve acon has been taken. Use only load-rated hardware when suspending JBL
suspend able loudspeaker models.
Suspension systems are comprised of mechanical devices and, as such, they require regular inspecon and roune maintenance
to ensure proper funconality. Before suspending or pole mounng any speaker system, always inspect all components (enclo-
sure, suspension frames or brackets, pins, eyebolts, etc.) for cracks, deformaons, corrosion or missing/loose/damaged parts
that could reduce strength and safety of the array.
Do not suspend or pole mount the speaker unl the proper correcve acon has been taken.
Installed systems should be inspected at least annually. The inspecon shall include a visual survey of all corners and load-bear-
ing surfaces for signs of cracking, water damage, de-laminaon or any other condion that may decrease the strength of the
loudspeaker enclosure.
Accessory suspension hardware provided with or for BRX systems must be inspected for fague at least annually or as required
by local ordinance. The inspecon shall include a visual survey of the material for signs of corrosion, bending or any other
condion that may decrease the strength of the fastener. Addionally, any eyebolts shall be checked for possible spin-out of the
enclosure.
For all other hardware and ngs, refer to the hardware manufacturer’s inspecon and maintenance guidelines for process .
JBL is not responsible for the applicaon of its products for any purpose or the misuse of this informaon for any purpose. Fur-
thermore, JBL is not responsible for the abuse of its products caused by avoiding compliance with inspecon and maintenance
procedures or any other abuse.
Prior to suspending the system, an expert, trained and experienced in suspending speaker systems, should inspect all parts and
components.
2.5 - ATTACHMENT TO STRUCTURES
A licensed Professional Engineer must approve the placement and method of aachment to the structure prior to the installa-
on of any overhead object. The following performance standards should be provided to the Professional Engineer for design
purposes: Uniform Building Code as applicable, Municipal Building Code as applicable and Seismic Code as applicable. The in-
stallaon of the hardware and method of aachment must be carried out in the manner specied by the Professional Engineer.
Improper installaon may result in damage, injury or death.

JBL BRX 300 SERIES 6
SYSTEM DEPLOYMENT GUIDE
MODEL NUMBER DESCRIPTION
BRX308- LA Dual 8” Line Array Element
BRX325SP Dual 15” Subwoofer with Power Amplier and DSP for enre system
BRX308-ACC Accessory Kit - Transport cart for 4 x BRX308-LA, So cover for Cart, So cover for
Subwoofer, Speaker cables for system
BRX308-AF Array Frame for suspending up to 8 x BRX308-LA
Note: 5/8” Shackles for hoist aachment must be ordered seperately.
BRX308-PM Pole Mount + Adapter kit
ORDERING INFORMATION

JBL BRX 300 SERIES 7
SYSTEM DEPLOYMENT GUIDE
The BRX300 System is a true plug and play soluon that features a combinaon of the BRX308-LA Dual 8”
2 Way Line array Element and the BRX325SP Dual 15” Subwoofer that also houses a 6 Channel High Power
Amplier along with a 48kHz/24 bit DSP for Loudspeaker tuning. All the components are packaged to maximize
use of space and ease of handling and Set-up.
The power and processing Module features BSS Audio Processing for the Subwoofer and 2 circuits of 2 x BRX
08LA each including linear phase FIR Filters and dbx limiter suite for Loudspeaker protecon. As such, no
external processing is required .
NOTE: BRX Speakers used with other Amplicaon and DSP will VOID the WARRANTY of the system.
This System is primarily intended for Ground stack use ( 4 x BRX308-LA + 1 x BRX25SP) and Pole stacked ( 2 x
BRX308-LA + 1 x BRX325SP with the BRX308-PM Pole and Adapter kit).
There is a third opon of use as a Flown System ( Up to 8 x BRX308-LA suspended from 1 x BRX308-AF). The
subwoofers either remain stacked on the ground or 1 x BRX325SP Subwoofer may be own on its own Array
Frame. Each Subwoofer can power up to 4 x BRX308-LA using the built in Power Module.
BRX 300 SYSTEM

JBL BRX 300 SERIES 8
SYSTEM DEPLOYMENT GUIDE
NOTE: BRX Speakers used with other Amplicaon and DSP will VOID the WARRANTY of the system.
The below image shows the connecon diagram for the BRX308-LA Tops from the Amplier and DSP Module.
Each output on the Power Amplier module can drive up to 2 x BRX308-LA Tops.
The system can be driven in 2 Modes:
1. INPUT Y MODE : In this mode, A single output from the mixer feeds the enre system to drive both the
Sub + Tops.
2. DUAL MODE : In this mode, both the Sub and Tops can be driven from dierent outputs of the Mixer to
enable addional control over the Sub + Top Balance of the system.
From Mixer From Mixer
From Mixer Aux Out
INPUT Y MODE DUAL MODE

JBL BRX 300 SERIES 9
SYSTEM DEPLOYMENT GUIDE
The most common use case for the BRX308 System is the ground Stacked mode as shown above.
It is advised to use an inter-box angle of at least 2° between each BRX308-LA to allow for wide enough
vercal coverage of the High Frequency.
The BRX308-LA has capve rigging hardware that allows for inter box
angles of 0,1,2,3,4,5,6,8,10 and 12°.
To set the inter box angle to either of the values menoned above,
align the Boom box Angle Bar ‘Lock’ hole to match with the desired
angle value on the Top Box and lock it in place with the Quick release
pin.
When seng inter box angles of 8° and above, the angle bar of the
upper box may obstruct the angle bar from the below box from align-
ing with the desired value. In such cases, the angle bar of the upper
box must be stored using the Quick release pin in the ‘Standby’ hole.
Angle Bar
MAX 4x BRX308-LA
SYSTEM APPLICATION GUIDE - GROUND STACKED MODE

JBL BRX 300 SERIES 10
SYSTEM DEPLOYMENT GUIDE
A Maximum of 2 x BRX308-LA may be mounted on the Pole + Adapter
kit that is available for purchase as part of the BRX308-ACC Kit
It is advised to use an inter-box angle of at least 2° between each
BRX308-LA to allow for wide enough vercal coverage of the High
Frequency.
The Pole Mount adapter bar allows for the following angles 0,-2,-3,-4,-,5,-6,-8,-9,-10,-
11,-12° for the rst box mounted on it. The negave angles allow the rst box to aim
downwards and cover audience that is closer to the array.
To set the rst box at the desired –ve angle value, Align the desired value on the
Adapter bar to the boom of the box and lock in place with the quick release pin in
the matching hole.
We recommend an inter-box Angle of 10 or 12° for the second Speaker. This allows for
more uniform coverage from front to back.
Adapter Bar
MAX 2x BRX308-LA
SYSTEM APPLICATION GUIDE - POLE MOUNT MODE