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JBL GTO 75.4 Service Manual

JBL GTO 75.4
30 pages
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GTO Series
75.4
75.4II
4 CHANNEL POWER AMPLIFIER
SERVICE MANUAL
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 R
ev4vvv3/2009
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JBL GTO 75.4 Specifications

General IconGeneral
Channels4
RMS Power at 4 Ohms75W x 4
THD at Rated RMS Power< 1%
Signal to Noise Ratio> 80 dB
Crossover Frequency50 Hz - 200 Hz
Input Sensitivity200 mV - 4 V
Frequency Response10Hz
Bass Boost0 dB

Summary

GTO 75.4/75.4ll Specifications

Output Power

Details power output for 4-ohm and 2-ohm stereo/bridged configurations.

Signal-to-Noise Ratio

Specifies the noise level relative to the output signal.

Dynamic Power

Indicates the amplifier's ability to handle transient signals.

Features

Installation

Installation Warnings and Tips

Safety precautions and general advice for installation.

Choosing a Location and Mounting the Amplifier

Guidance on selecting and securing the amplifier's position.

Power Connections

Instructions for connecting the amplifier's power supply.

Speaker Connections

Guidance on connecting speakers to the amplifier.

Connections

Installation and Setup

Setting the Crossover(s)

Adjusting frequency filters for speaker output.

Setting Input Sensitivity

Calibrating the input signal level.

Controls and Connections

Troubleshooting

Typical System Configuration

Block Diagram

PWM and Dual Op Amp IC Diagrams

Additional Dual Op Amp IC Diagrams

Transistor Diagrams

KTC3198GR Transistor Diagram

Pinout and representation of the KTC3198GR transistor.

KTA1268GR Transistor Diagram

Pinout and representation of the KTA1268GR transistor.

KTC3200GR Transistor Diagram

Pinout and representation of the KTC3200GR transistor.

KTC3198BL Transistor Diagram

Pinout and representation of the KTC3198BL transistor.

GTO 75.4 Schematic - Page 1

GTO 75.4 Schematic - Page 2

GTO 75.4 Schematic - Page 3

GTO 75.411 Schematic - Page 1

GTO 75.411 Schematic - Page 2

GTO 75.411 Schematic - Page 3

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