JBL 6290 User Manual

IMPORTANT:
DO
NOT
POKE
YOUR
FINGERS
OR
METAL
TOOLS
INTO THE
AMPLIFIER
WHEN
THE
KNOBS
ARE
OFF.
THERE IS
THE
POSSIBILITY OF
SEVERE
SHOCK
HAZARD DUE
TO
THE
HIGH
VOLTAGE/HIGH
CURRENT DC USED
TO
POWER
THIS
DEVICE.
THE
AMPLIFIER
SHOULD
ONLY BE
OPERATED
WITH THE
KNOBS
OR
SECURITY
COVER
IN
PLACE.
high
low
shield
#3
#2
n
tip
ring
sleeve
FIGURE
2-1. BALANCED
INPUT
CONNECTIONS*
Input
Signal
high
low
shield
high
low
shield
#3
#
1,2
tip
sleeve
FIGURE
2-2. UNBALANCED
INPUT
CONNECTIONS*
*
For
a
given
channel,
use
either
XL-type
or
phone
jack,
not
both.
For
mono
operation,
use
only
Channel
A.
11-11

JBL 6290 Specifications

General

Brand	JBL
Model	6290
Category	Amplifier
Language	English

Summary

Introduction

Specifications

Details output power, frequency response, noise, input impedance, maximum input level, and sensitivity.

Unpacking and Inspection

AC Power

Specifies voltage requirements for USA/Canada and identifies voltage-wired units.

Amplifier Mode Switch

External Connections

Details input and output connection methods using XL-type, phone jacks, and barrier strips.

Appropriately Rated Loads

Guidance on matching amplifier power to loudspeaker impedance and power handling capabilities.

Grounding

Explains safe mechanical ground connection, ground loops, and troubleshooting methods.

Operating Instructions

General Operating Procedures

Turn On and System Check

Procedure for powering up the amplifier and verifying system operation via standby indicators.

Note on Amplifier Cooling

Clip Indicators

Explains the function of CLIP indicators and how to respond to overload conditions.

Sensitivity Ratings

Maintenance

General Maintenance

Repairs and Warranty