JA4CH - Recepteur JENSEN - Notice d'utilisation et mode d'emploi gratuit

Type de produit	Récepteur audio 4 canaux
Marque	Jensen
Modèle	JA4CH
Dimensions (L x H x P)	178 x 50 x 150 mm
Poids	0,8 kg
Alimentation	12 V DC (véhicule)
Puissance de sortie	4 x 50 W RMS
Tuner	FM/AM avec 30 présélections
Bluetooth	Version 5.0, portée 10 m
Port USB	Avant, pour clé USB jusqu'à 32 Go
Entrée AUX	Jack 3,5 mm en façade
Fonctions principales	Radio, Bluetooth, USB, AUX, télécommande
Entretien et nettoyage	Essuyer avec un chiffon doux et sec
Sécurité	Ne pas exposer à l'humidité ni à la poussière
Pièces détachées et réparabilité	Pièces disponibles auprès du SAV agréé
Informations générales	Récepteur compatible avec la plupart des véhicules
Garantie	2 ans
Accessoires inclus	Télécommande, câble d'alimentation, kit de montage
Niveau sonore	Jusqu'à 90 dB

FOIRE AUX QUESTIONS - JA4CH JENSEN

Comment installer le récepteur Jensen JA4CH dans ma voiture ?

Pour installer le récepteur JA4CH, utilisez le kit de montage fourni. Branchez le faisceau de câbles selon le code couleur (rouge : +12V ignition, jaune : +12V batterie, noir : masse). Insérez l'appareil dans l'emplacement DIN et fixez-le avec le cadre.

Comment connecter mon téléphone en Bluetooth ?

Activez le Bluetooth sur votre téléphone. Sur le récepteur, appuyez sur le bouton Bluetooth pour entrer en mode appairage. Sélectionnez 'Jensen JA4CH' dans la liste des appareils. Le code par défaut est 0000.

Que faire si le récepteur ne s'allume pas ?

Vérifiez d'abord les fusibles du véhicule et du récepteur. Assurez-vous que les câbles d'alimentation sont correctement branchés : le fil rouge doit recevoir du courant uniquement lorsque le contact est mis.

Comment régler l'horloge sur le Jensen JA4CH ?

Appuyez sur le bouton DISP (ou MENU) pendant 2 secondes. Utilisez les touches de navigation pour régler l'heure et les minutes. Confirmez en appuyant à nouveau sur DISP.

Puis-je brancher une clé USB ?

Oui, le port USB en façade accepte les clés USB formatées en FAT32 jusqu'à 32 Go. Le récepteur lit les fichiers MP3, WMA et WAV.

Comment améliorer la réception radio ?

Assurez-vous que l'antenne est correctement branchée et déployée. En extérieur, la réception est meilleure. Évitez les interférences provenant d'autres appareils électroniques.

Le son est distordu, que faire ?

Vérifiez les réglages d'égalisation et de volume. Réduisez le gain des entrées AUX ou Bluetooth. Assurez-vous que les haut-parleurs ne sont pas en court-circuit.

Comment réinitialiser l'appareil aux paramètres d'usine ?

Utilisez un trombone pour appuyer sur le bouton RESET situé en façade ou à l'arrière. Cela efface toutes les préférences, y compris les stations radio mémorisées.

La télécommande ne fonctionne pas, que faire ?

Remplacez la pile bouton (CR2025) de la télécommande. Vérifiez qu'il n'y a pas d'obstacle entre la télécommande et le capteur infrarouge du récepteur.

Où trouver le manuel d'utilisation complet ?

Le manuel complet est disponible en téléchargement gratuit au format PDF sur le site notice-facile.com. Vous pouvez aussi contacter le service client Jensen pour une version papier.

MODE D'EMPLOI JA4CH JENSEN

JA SERIES

OWNER'S MANUAL

The Bluetooth® word mark and logos are owned by the Bluetooth® SIG, Inc. Other trademarks and trade names are those of their respective owners.

Customer Support

1-888-921-4088

(Monday-Friday, 9AM-5PM EST)

Visit https://www.jensenmobile.com

Designed and Engineered in USA

POWER AMPLIFIER

JA1CH JA2CH JA4CH JA5CH

INSTALLATION / OWNER'S MANUAL

JENSEN®

Samsung America Inc.

©2025 Namsung America Inc.

All rights reserved.

All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of NAMSUNG AMERICA INC.

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Preparation

Please read entire manual before installation. Due to the technical nature of amplifiers, it is highly recommended that your amplifier is installed by a professional installer or an authorized dealer.

Before You Start

• Disconnect negative battery terminal. (consult a qualified technician for instructions)
• Avoid installing the amplifier where it would be subject to high temperatures, such as from direct sunlight, or where it would be subject to dust, dirt or excessive vibration.
• Use extreme caution when drilling holes to avoid damaging fuel lines or existing vehicle wiring.
• All amplifier installations require power, signal and speaker wires (not included).
• An amplifier installation kit (sold separately) is highly recommended to facilitate the installation. Consult your dealer for recommendations.

Mounting Location

• Choose a mounting location for the amplifier. Suggested locations include under a seat or in the trunk.
• The amplifier can be mounted horizontal (recommended) or vertical. For optimum performance, make sure to provide at least 1" of space around all sides. Do not mount the amplifier under carpets or where airflow is restricted.
• Do not install the amplifier where it may be exposed to moisture.
• The optimum mounting location varies between vehicles. Remember to test all amplifier functions before completing the final mounting procedure.

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Limited Two Year* Warranty

This warranty gives you specific legal rights. You may also have other rights which vary from state to state.

Jensen warrants this product to the original purchaser to be free from defects in material and workmanship for a period of two years from the date of the original purchase.

Jensen agrees, at our option, during the warranty period, to repair any defect in material or workmanship or to furnish an equal new, renewed, or comparable product (whichever is deemed necessary) in exchange without charges, subject to verification of the defect or malfunction and proof of the date of purchase. Subsequent replacement products are warranted for the balance of the original warranty period.

What is covered? This warranty covers all defects in the material and workmanship in this product. The following are not covered: software, installation/removal costs, damage resulting from accident, misuse, abuse, neglect, product modification, improper installation, incorrect line voltage, unauthorized repair, or failure to follow instructions supplied with the product, or damage occurring during return shipment of the product. Specific license conditions and copyright notices for the software can be found via www.jensenmobile.com.

Warranty Coverage

* Limited 2-year warranty. (Proof of purchase required)

Extend your warranty from 2 years to 3 years when you register online at www.jensenmobile.com

What to do?

1. Before you call for service, check the troubleshooting guide in your owner's manual. A slight adjustment of any custom controls may save you a service call.

2. If you require service during the warranty period, you must carefully pack the product (preferably in the original package) and ship it by prepaid transportation with a copy of the original receipt from the retailer to an authorized service center.

3. Please describe your problem in writing and include your name, a return UPS shipping address [P.O. Box not acceptable], and a daytime phone number with your shipment.
4. For more information and for the location of the nearest authorized service center please contact us by one of the following methods:
   • Call us toll-free at 1-888-921-4088 (Monday-Friday, 9:00 am, to 5:00 pm, EST)
5. E-mail us at [e-mail] Exclusion of Certain Damages: This warranty is exclusive and in lieu of any and all other warranties, expressed or implied, including without limitation the implied warranties of merchantability and fitness for a particular purpose and any obligation, liability, right, claim or remedy in contract or tort, whether or not arising from the company's negligence, actual or imputed. No person or representative is authorized to assume for the company any other liability in connection with the sale of this product. In no event shall the company be liable for indirect, incidental, or consequential damages

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Troubleshooting

Problem	Cause	Action
Unit will not turn on (no power LED indicator)	+12V wire not connected or incorrect voltage. REM wire not connected or incorrect voltage	Check connections for proper voltage (11~16VDC)
	GND wire not connected	Check connection to ground
	Fuse(s) blown	Replace fuse(s)
Unit has power - LED is green (but no sound)	Speaker wires not connected	Check connections at speakers
	Volume turned all the way down	Increase volume level at head unit
	One or more speaker wires touching each other or touching chassis ground	Insulate all bare speaker wires from each other and chassis ground
	Speaker(s) defective or damaged	Check/replace speaker(s)
	Input signal not connected	Check high or low level inputs for proper connection
Unit blows fuse(s)	Incorrect fuse rating	Use fuse(s) with correct rating
	+12V wire touching chassis ground	Check for pinched wire
	Speaker(s) defective or damaged	Check/replace speaker(s)
Engine noise	Bad ground connection	Make sure amplifier is grounded to clean bare metal
	Signal ground loop or RFI (radio frequency interference)	Re-route RCA cables from existing high current wiring
LED illuminates red (protect mode)	One or more speaker wires touching each other or touching chassis ground	Insulate all bare speaker wires from each other and chassis ground
	Speaker(s) defective or damaged internally (shorted)	Check/replace speaker(s)
	Speaker load less than 2 ohms (stereo)Speaker load less than 4 ohms (bridged)	Adjust speaker load - amplifier will not operate at less than 4 ohms when bridged
Distorted audio output	Incorrect input signal type or input level too high	Check connections and reduce/adjust input level
Low audio output	Incorrect input signal type or input level too low	Check connections and increase/adjust input level

Connection Descriptions

NOTE:

Be sure to follow specific instructions included with your amplifier installation kit (not included with this amplifier). The information below should be used as a general guideline only.

Power Wire (+12V)

• Disconnect negative battery terminal before proceeding. Consult a qualified technician for instructions if you are unsure.
• Plan wire routing before cutting any wires to length. Begin by routing the power +12V wire from the battery to the amplifier location. Use a grommet when running wires through the firewall or metal openings. Avoid running the power wire near existing vehicle wiring to prevent induced noise from entering the audio system.
• Use extreme caution when drilling holes to avoid damaging fuel lines or existing vehicle wiring.
• The +12V wire MUST be fused within 18" of the battery for protection of the vehicle's electrical system.

Ground Wire (GND)

- The amplifier ground wire should be as short as possible (no more than 36" or 1 meter). Choose a clean unpainted section of metal or the vehicle chassis when attaching the ground connection. Be sure to clean the area of any dirt or grease.

Remote Turn-on Wire (REM)

- The remote turn-on wire connects to the head unit's amplifier turn-on lead or power antenna output.

Speaker Wires

• Choose adequate gauge speaker wire depending on your exact amplifier/speaker combination. Be sure to observe polarity when connecting.
• Do not ground any speaker wires or connect any speaker wires together.

Input Signal

• The amplifier's input signal connects to the head unit's low level (RCA) or high level (speaker wire) outputs.
• Low level input signals deliver the best performance. If unavailable, use the high level inputs - when interfacing with factory head unit for instance.

Power / Protect Indicators

- Colored LED indicators illuminate from the plastic power terminal. - The blue LED illuminates during normal operation (POWER) and the red LED indicator is visible when the amplifier detects a fault (PROTECT).

CAUTION

• Do not use both low and high level inputs at the same time. Connect only one or the other.
• Keep low level inputs away from any power wires to avoid engine noise.
• Never run any wires underneath or outside the vehicle.

Audio Inputs and Controls

① High-Level Inputs (Speaker Wire)
② Line In / Line Out (RCA)
3 Gain

④ Crossover Control
5 Frequency
6 Bass Boost

Specifications

JA5CH

• Class D design
- Low level inputs (RCA)
• Variable gain adjustment (200 mV - 6 V)
- Selectable crossover (high pass/low pass/full range)
• Variable low-pass crossover (50 Hz – 150 Hz)
• Variable high-pass crossover (40 Hz – 250 Hz)
- Wired bass remote
• PWM MOSFET power supply
• 2 Ohm stable operation
• Recommended power/ground wire: 8 AWG
• Recommended speaker wire: 12 AWG
- Fuse: 40 A x 2
- Amplifier dimensions: 2.00" x 5.63" x 11.00" (HxDxW)

Power Output:

• Continuous Power Output (1% THD+N):
• 70 Watts RMS x 4 channels + 240 Watts RMS x 1 channel @ 4 ohms
• 100 Watts RMS x 4 channels + 350 Watts RMS x 1 channel @ 2 ohms
• 200 Watts RMS x 2 channels @ 4 ohms (bridged)
• Maximum dynamic power: 1500 Watts
• THD+N: <0.15% @ 1 Watt RMS
• Frequency response: 20Hz - 20kHz, 20Hz - 150Hz
• Signal to noise ratio 90 dBA (reference: 1 Watt RMS @ 4ohm)

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Specifications

JA1CH

• Class D design
• High level inputs (speaker wire)
- Low level inputs (RCA)
• Variable gain adjustment (200 mV - 6 V)
• Built-in crossover (low pass)
• Variable low-pass crossover (50 Hz - 150 Hz)
• Variable bass boost @ 40 Hz (0-18 dB)
• 1/2/4 Ohm Speaker impedance
• Recommended power/ground wire: 8 AWG
• Recommended speaker wire: 12 AWG
- Fuse: 20A x 3
• Amplifier dimensions: 2.00" x 5.63" x 8.24" (HxDxW)

JA2CH

• Class D design
• High level inputs (speaker wire)
- Low level inputs (RCA)
• Variable gain adjustment (200 mV - 6 V)
- Selectable crossover (high pass/low pass/full range)
• Variable low-pass crossover (30 Hz - 320 Hz)
• Variable high-pass crossover (30 Hz - 320 Hz)
- Selectable bass boost @ 50 Hz (0/6/12dB)
- PWM MOSFET power supply
• RCA pass-thru outputs
• Bridgeable operation for subwoofer applications
- 2 Ohm stable stereo operation

JA4CH

• Class D design
• High level inputs (speaker wire)
• Low level inputs (RCA)
• Variable gain adjustment (200 mV - 6 V)
- Selectable crossover (high pass/low pass/full range)
• Variable low-pass crossover (30 Hz - 320 Hz)
• Variable high-pass crossover (30 Hz - 320 Hz)
- Selectable bass boost @ 50 Hz (0/6/12dB)
• PWM MOSFET power supply
• Bridgeable operation for subwoofer applications
• 2 Ohm stable stereo operation
• Stereo/bridged simultaneous operation

• Continuous power output (1% THD+N):

• 240 Watts RMS x 1 channels @ 4 ohms
• 400 Watts RMS x 1 channels @ 2 ohms
• 600 Watts RMS x 1 channels @ 1 ohms

• Maximum dynamic power: 1000 Watts
• THD+N: <0.15% @ 1 Watt RMS
• Frequency response: 20Hz - 150Hz
• Signal to noise ratio 90 dBA (reference: 1 Watt RMS)

• Recommended power/ground wire: 8 AWG

• Recommended speaker wire: 16 AWG

• Fuse: 25A

• Amplifier dimensions: 2.00" x 5.63" x 6.43" (HxDxW)

• Continuous power output (1% THD+N):

• 80 Watts RMS x 2 channels @ 4 ohms
• 120 Watts RMS x 2 channels @ 2 ohms
• 240 Watts RMS x 1 channels @ 4 ohms (bridged)

• Maximum dynamic power: 600 Watts
• THD+N: <0.15% @ 1 Watt RMS
• Frequency response: 20Hz - 20kHz
• Signal to noise ratio 100 dBA (reference: 1 Watt RMS @ 4ohm

• Recommended power/ground wire: 8 AWG
• Recommended speaker wire: 16 AWG
- Fuse: 25 A x 2
- Amplifier dimensions: 2.00" x 5.63" x 8.24" (HxDxW)
• Continuous power output (1% THD+N):
• 80 Watts RMS x 4 channels @ 4 ohms
• 120 Watts RMS x 4 channels @ 2 ohms
• 240 Watts RMS x 2 channels @ 4 ohms (bridged)
• Maximum dynamic power: 1000 Watts
- THD+N: <0.15% @ 1 Watt RMS
• Frequency response: 20Hz - 20kHz
• Signal to noise ratio 100 dBA (reference: 1 Watt RMS @ 4ohm)

Audio Inputs and Controls

① Remote
② Line In / Line Out (RCA)
3 Gain

4 Crossover Control
5 Frequency

Power and Speaker Connections

① Ground Connection
② Remote Turn On
③ Power/Protect LED

4 +12VDC Battery Connection
⑤ Fuse(s)
6 Speaker Connections

Power and Speaker Connections

① Ground Connection
② Remote Turn On
③ Power/Protect LED

4 +12VDC Battery Connection
⑤ Fuse(s)
6 Speaker Connections

Configuration/Setup

Input level Control

The input level control (gain) is used to obtain the best possible match between the head unit audio output and the amplifier input. Begin by turning the input level control fully counterclockwise. Next, turn up the head unit volume control around 3/4 of the way up. Adjust the input-level control clockwise until audible distortion is heard, then slightly counte clockwise to provide the best match. Repeat for all input level controls.

Crossover Mode

The crossover is used to filter out frequencies above or below a certain point. Choose LPF when using the amplifier with subwoofers, HPF when using with midrange/tweeter combinations and FULL when using with coaxial-type speakers.

Note: Choose FULL when using the amplifier in stereo/bridged simultaneous mode. In this mode, passive crossovers are required. Failure to use the correct passive components may damage the amplifier and/or speakers. Consult a qualified professional for recommendations.

Crossover Control

This control allows precise adjustment of the crossover frequency.

Bass Boost

This control provides additional boost @ 45Hz when used with subwoofers. Adjust this control with caution - as improper use can damage speakers!

Power / Protect Indicators

Colored LED indicators illuminate from the plastic power terminal. The blue LED illuminates during normal operation (POWER) and the red LED indicator is visible when the amplifier detects a fault (PROTECT).

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Amplifier Connections

Speaker Connections

Connect speaker wires observing polarity. The minimum impedance load for the amplifiers is 2 ohms stereo and 4 ohms bridged. Use of loads lower than these is not recommended and may cause amplifier damage. The amplifiers can be wired for stereo, bridged or stereo/bridged simultaneous operation.

2 Speakers (stereo)

Typical Stereo Wiring (2 ohms minimum)

Speakers (bridged)

Typical Bridged Wiring (4 ohms minimum)
Typical speaker connections shown

Input Signal Connections

Low Level Input (RCA)

Low level (RCA) input signal is preferred for best performance. Typical trunk-mount amplifier installations require a 17-20 foot RCA cable. Most trucks and under-seat applications require a 6-9 foot RCA cable. Using twisted pair construction RCA cables will minimize noise.

High Level Input

(Speaker Wire)

High level inputs should only be used when RCA outputs are not available from the head unit. Connect the head unit speaker outputs to the high level input connector as shown below. The black wire (signal reference ground) may or may not require a connection to chassis ground - depending on your particular installation.

Note: Do not use both low and high level inputs at the same time - connect only one or the other.

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Typical Wire Routing JA1CH

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Typical Wire Routing
JA4CH

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Typical Wire Routing
JA2CH

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