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Jensen POWER 400 - POWER 400 AMPLIFIER - User Manual

Jensen POWER 400 - POWER 400 AMPLIFIER
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POWER Amplifiers
Installation & Operation Manual
Amplificadores Power
Manual de Instalación y Operación
Amplificateurs Power
Manual de Installation et Operation
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features and Specifications . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Speaker Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Indicators and Controls . . . . . . . . . . . . . . . . . . 10
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Remote Input Level Control . . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 12
CEA Power Output . . . . . . . . . . . . . . . . . . . . . . 13
Contenido
Introducción . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Características y Especificaciones . . . . . . . . .16
Instalación. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Cableado de Energía . . . . . . . . . . . . . . . . . . . . .18
Cableado de Altavoz . . . . . . . . . . . . . . . . . . . . .20
Indicadores y Controles . . . . . . . . . . . . . . . . . .24
Testeo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Control de Nivel de Entrada Remoto . . . . . . . .25
Localización de Problemas . . . . . . . . . . . . . . . .26
Salida de Energía CEA. . . . . . . . . . . . . . . . . . . .27
Table des matières
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fonctions et spécifications . . . . . . . . . . . . . . . 30
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Câblage puissant. . . . . . . . . . . . . . . . . . . . . . . . 32
Câblage des haut parleurs . . . . . . . . . . . . . . . . 34
Indicateurs et contrôles . . . . . . . . . . . . . . . . . . 38
Essais. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Contrôle du niveau d'entrée à distance . . . . . 39
Dépannage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Sortie de puissance CEA . . . . . . . . . . . . . . . . . 41
400.2, 760.4, 900.1

Table of Contents

Questions and Answers

  • C
    Charles BaileyAug 12, 2025
    Why my Jensen Car Amplifier does not turn on?
    • M
      Michael MartinAug 12, 2025
      If your Jensen Car Amplifier is not turning on, there might be several reasons. First, check the fuse(s) to ensure there is power to the +12V terminal. Also, check the head unit fuse(s) and wiring to ensure there is power to the REM terminal. Replace the main fuse at the battery if it's blown, and identify what caused it to fail. Similarly, if the fuse at the amplifier is blown, replace it and identify the cause. Finally, ensure the main power ground is properly grounded to a bare metal chassis.
  • L
    lauriegallegosAug 16, 2025
    How to fix distorted sound on Jensen POWER 400 - POWER 400 AMPLIFIER Car Amplifier?
    • J
      Jake WoodsAug 16, 2025
      If your Jensen Car Amplifier is producing distorted sound, it might be because the input level control is adjusted too high. Try readjusting the input level.
  • M
    Matthew BakerAug 20, 2025
    Why is there engine noise in my Jensen Car Amplifier?
    • C
      Christina CooperAug 20, 2025
      Engine noise or alternator whine in your Jensen Car Amplifier can be due to several factors. It could be caused by ground loop(s), so using good quality shielded RCA cables might help. Alternatively, there could be a faulty ground at the amp or head unit; try re-grounding both to a clean, bare metal chassis. Inductive coupling could also be the culprit, so re-route RCA and/or speaker wires away from factory harnesses. Lastly, the input level on the amp might be set too high, so try re-adjusting it.
  • L
    Laura RogersAug 23, 2025
    What to do if my Jensen POWER 400 - POWER 400 AMPLIFIER Car Amplifier blows fuses?
    • F
      fisherjoannaAug 23, 2025
      If your Jensen Car Amplifier blows fuse(s), it could be due to power wires connected backwards. Reconnect the power wires correctly. If the issue persists, there might be an internal problem with the amp, and you should take it for service.
  • T
    Tiffany VelazquezAug 27, 2025
    How to fix short circuit protection on Jensen Car Amplifier?
    • J
      Jonathan HamiltonAug 27, 2025
      If your Jensen Car Amplifier activates short circuit protection, it may be caused by speaker wire(s) shorting to ground. Check for faulty wiring. It could also be due to a defective crossover, meaning a faulty passive crossover.
  • S
    Sean JonesAug 31, 2025
    What causes thermal protection to activate on Jensen Car Amplifier?
    • M
      Michael GlennAug 31, 2025
      If your Jensen Car Amplifier activates thermal protection, it may be because the amplifier is driving a 2 ohm load for extended periods. If the amplifier frequently overheats while driving subwoofers, consider installing a fan to keep it cool.
  • K
    Katie ShawSep 4, 2025
    What does low impedance protection mean on Jensen POWER 400 - POWER 400 AMPLIFIER Car Amplifier?
    • C
      Christopher ChandlerSep 4, 2025
      If your Jensen Car Amplifier is experiencing low impedance protection, the amp may be connected to an improper load. Check the speaker connections. Also, verify that speakers are connected properly, as the amp will not drive a 1 ohm mono load (2 ohm minimum in mono configuration). Check the speakers for defects. Finally, check the crossovers for faults.
  • S
    Steven MurphySep 7, 2025
    Why is the bass response poor on my Jensen POWER 400 - POWER 400 AMPLIFIER?
    • L
      leslie08Sep 8, 2025
      If you are experiencing poor bass response from your Jensen Car Amplifier, the speakers may be out of phase. Check the speaker polarity; if two subwoofers are connected to the amplifier, reverse the connection to one speaker only.

Summary

Installation

Battery Disconnection Safety

Instructions on disconnecting the vehicle battery before installation.

Mounting Location and Procedure

Guidelines for selecting a mounting location and securing the amplifier.

Wire Routing Guidelines

Instructions and warnings regarding routing wires during installation.

Amplifier Power Wiring Guide

+12 V;B+ Power Terminal Connection

Details how to connect the main power wire to the battery terminal.

Remote Turn-On (REM) Terminal Connection

Explains how to connect the remote turn-on lead from the receiver.

Speaker Wiring Configurations

Power 400.2 Speaker Wiring Options

Illustrates speaker wiring options for the Power 400.2, including two speakers and one subwoofer.

Power 900.1 Speaker Wiring Options

Shows speaker wiring configurations for the Power 900.1, including two subwoofers and one subwoofer.

Tri-Mode Wiring Configuration

Diagram illustrating the Tri-Mode wiring setup for amplifier configurations.

Power 760.4 Speaker Wiring Configurations

Four Speaker Wiring

Wiring diagram for connecting four speakers to the Power 760.4 amplifier.

Two Speakers and Bridged Subwoofer Wiring

Wiring diagram for connecting two speakers and a bridged subwoofer to the Power 760.4.

Two Subwoofer Wiring

Wiring diagram for connecting two subwoofers to the Power 760.4 amplifier.

Amplifier Input Wiring Guide

Power 400.2 Input Wiring Methods

Shows stereo and mono input wiring for the Power 400.2 amplifier.

Power 900.1 Input Wiring Methods

Details mono input wiring for the Power 900.1 amplifier.

Power 760.4 Input Wiring Modes

Installation Testing Procedures

Battery Reconnection

Power Wiring Test

Speaker Connection Test

Common Troubleshooting Solutions

Troubleshooting: Amplifier Not Turning On

Troubleshooting: Distorted Sound

Troubleshooting: Blown Fuses

Troubleshooting: Engine Noise; Alternator Whine

Troubleshooting: Thermal Protection

Troubleshooting: Short Circuit Protection

Troubleshooting: Low Impedance Protection

Troubleshooting: Speaker Issues

Jensen POWER 400 - POWER 400 AMPLIFIER Specifications

General IconGeneral
BrandJensen
ModelPOWER 400 - POWER 400 AMPLIFIER
CategoryCar Amplifier
LanguageEnglish

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