JBL BRX300 Quick Start Guide

QUICK START GUIDE

IMPORTANT SAFETY INSTRUCTIONS

CAUTION

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including

ampliers) that produce heat.

9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding-type plug
has two blades and a third grounding prong. The wide
blade or the third prong is provided for your safety. If

the provided plug does not t into your outlet, consult

an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or
pinched, particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.

11. Only use attachments/accessories specied by the
manufacturer.

12. 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 caution when
moving the cart/apparatus combination to avoid injury
from tip-over.

13. Unplug this apparatus during lightning storms or when
unused for long periods of time.

14. Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally,
or has been dropped.

15. Use the mains plug to disconnect the apparatus from
the mains.

16. WARNING: TO REDUCE THE RISK OF FIRE
OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE.

17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR
SPLASHING AND ENSURE THAT NO OBJECTS FILLED
WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON
THE EQUIPMENT.

18. THE MAINS PLUG OF THE POWER SUPPLY CORD
SHALL REMAIN READILY OPERABLE.

The BRX300 Series amplier is only

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP
OR BOTTOM COVERS OF THE AMPLIFIER. NO USER
SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.

WATCH FOR THESE SYMBOLS:

The lightning bolt triangle is used to alert the user to the risk of
electric shock.

The exclamation point triangle is used to alert the user to
important operating or maintenance instructions.

MAGNETIC FIELD

CAUTION! Do not locate sensitive high-gain equipment
such as preampliers directly above or below the unit.
Because this amplier has a high power density, it has
a strong magnetic eld which can induce hum into
unshielded devices that are located nearby. The eld is
strongest just above the unit.

certied for 230V operation.

WELCOME

Thank you for purchasing a BRX300 Series system. This system is designed to be a true plug-and­play high-output loudspeaker system solution that features a combination 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 48kHz/24-bit DSP for loudspeaker tuning. All the components are
packaged to maximize use of space, ease of handling and setup.

For additional product information, please download the owner’s manual at http://jblpro.com.

Trademark Notice: JBL, Crown, dbx and BSS are Trademarks of HARMAN International.

ORDERING INFORMATION

MODEL DESCRIPTION

BRX308-LA Dual 8” line array element

BRX325SP

BRX308-ACC Accessory kit: Transport cart for 4 x BRX308-LA, soft cover for cart, soft cover for subwoofer,

BRX308-AF Array frame for suspending up to 8 x BRX308-LA

BRX308-PM Pole mount + adapter kit

Dual 15” subwoofer with power amplier and system DSP

speaker cables for system

2 JBL BRX300 SERIES

1

AMPLIFIER PANEL OVERVIEW

1 2 3 4 5 6 7

POWER SUPPLY INPUT

1

This PowerCon connector
provides the mains power

supply to the unit.

AUDIO INPUTS

5

There are two audio inputs
on balanced XLR connectors

labelled TOP and SUB. These
provide the audio input signal
to the TOP amplier and SUB
amplier respectively.

POWER BUTTON

2 3 4

Turns the amplier power on
or o.

AUDIO THRU OUTPUTS

6 7

There are two audio THRU

outputs on balanced
XLR connectors that are
connected in parallel to the
audio inputs. These outputs
are unprocessed and are

not buered. They may be

used to daisy-chain multiple

amplier units.

COOLING VENTS

The vents provide air Flow to
cool the amplier. DO NOT
BLOCK these vents.

MODE SWITCH

This switch toggles the

amplier between ‘INPUT Y’
and ‘DUAL’ input modes.

In ‘INPUT Y’ mode, the
ampliers receive their Input
ONLY from the connector
labelled ‘TOP’. This signal
drives both the SUB and TOP

outputs.

In ‘DUAL’ mode, a separate
signal is required at the input
labelled ‘SUB’ to drive the
subwoofer (SUB output).

AMPLIFIER OUTPUTS
FOR TOPS

There are two 4-pole outputs
for the tops labelled TOP A
and TOP B. Each output may

be used to power up to 2 x
BRX308-LA speakers.

3QUICK START GUIDE