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Jensen JA4B

Jensen JA4B 460W RMS 4-Channel Class-D Car Audio Compact Amplifier with DSP User Manual

Model: JA4B | Brand: Jensen

1. Prodott Aktarview

The Jensen JA4B is a compact 4-channel Class-D car audio amplifier designed to deliver powerful and clear sound. This amplifier integrates a Digital Signal Processor (DSP) for advanced audio tuning, controllable via a dedicated mobile application. Its efficient Class-D design ensures high power output with minimal heat generation, making it suitable for various vehicle installations.

Il-karatteristiċi ewlenin jinkludu:

  • Jensen DSP AMP App compatibility (Apple/Android) for comprehensive control.
  • Customizable RGB illumination for aesthetic integration.
  • Versatile input options: High Level (speaker wire) and Low Level (RCA).
  • Adjustable Bass Boost at 45 Hz for enhanced low-frequency response.
  • CTA-2006-D Certified for reliable power ratings.
Quddiem view of the Jensen JA4B amplifier with the Jensen logo illuminated in blue.

Figura 1.1: Quddiem view of the Jensen JA4B amplifier, wirjaasing its compact design and illuminated Jensen logo.

2. Setup u Installazzjoni

2.1 Prekawzjonijiet tas-Sigurtà

  • Skonnettja t-terminal negattiv tal-batterija tal-vettura qabel tibda kwalunkwe xogħol elettriku.
  • Kun żgur li l-wajers kollha huma iżolati sew biex tevita short circuits.
  • Use appropriate wire gauges as recommended in the specifications.
  • Immonta l- ampŻomm l-alimentatur sew f'post li jippermetti ventilazzjoni adegwata u li jkun protett mill-umdità u s-sħana eċċessiva.

2.2 Immuntar tal- Ampaktar ħaj

Choose a mounting location that is dry, well-ventilated, and away from direct sunlight or heat sources. Secure the amplifier using the provided mounting hardware. Ensure there is sufficient space around the amplifier għaċ-ċirkolazzjoni tal-arja.

2.3 Konnessjonijiet tal-Wiring

Proper wiring is crucial for optimal performance and safety. Refer to the diagrams below for connection points.

2.3.1 Power and Speaker Connections

Wara view of the Jensen JA4B amplifier showing power, ground, remote, fuse, and speaker output terminals.

Figura 2.1: Wara view of the Jensen JA4B amplifier, detailing the power input, fuse, and speaker output terminals.

  1. Power (BATTERY+): Connect a 4-8 AWG power wire from the amplifier to the positive terminal of the vehicle's battery. Install an in-line fuse (not supplied) within 18 inches of the battery.
  2. Art (GND): Connect a 4-8 AWG ground wire from the ampl-alimentatur ma' wiċċ tal-metall nadif u mhux miżbugħ fuq ix-chassis tal-vettura. Kun żgur li hemm konnessjoni elettrika soda.
  3. Remot (REM): Connect a 18 AWG remote turn-on wire from the amplifier to the remote output of your head unit. This wire turns the amplifier on and off with the head unit.
  4. Speaker Outputs (CH1, CH2, CH3, CH4): Connect your speakers to the corresponding output terminals. The amplifier supports 4-channel operation. Refer to your speaker's impedance for proper connection. Recommended speaker wire is 12-16 AWG.
  5. Fjusis: Il- amplifier is equipped with two 25A fuses. Ensure these are correctly seated.

2.3.2 Signal Input Connections

Fuq view of the Jensen JA4B amplifier showing RCA inputs, high-level inputs, and DSP controls.

Figura 2.2: Fuq view of the Jensen JA4B amplifier, illustrating the signal input options and DSP control area.

  • Low Level (RCA) Inputs: Qabbad il-kejbils RCA mill-pre- tal-unità ewlenija tiegħekamp outputs għall- amplifier's RCA inputs (CH1/CH2, CH3/CH4).
  • High Level (Speaker Wire) Inputs: If your head unit does not have RCA outputs, connect the speaker outputs from your head unit directly to the ampterminals tad-dħul ta' livell għoli tal-lifier.
  • RCA Pass Through Outputs: These outputs allow you to send the audio signal to another amplifier fis-sistema tiegħek.

3. It-tħaddim tal- Ampaktar ħaj

3.1 Qawwa Inizjali

Once all connections are secure, reconnect the vehicle's negative battery terminal. Turn on your head unit. The amplifier should power on, indicated by the illuminated Jensen logo.

3.2 DSP App Control

The Jensen JA4B amplifier features an integrated Digital Signal Processor (DSP) that can be controlled via the Jensen DSP AMP App, available for Apple and Android devices. This app allows for precise audio tuning.

  1. Download the "Jensen DSP AMP" app from your device's app store.
  2. Tiżgura tiegħek amplifier huwa mixgħul.
  3. Open the app and follow the on-screen instructions to connect to your amplifier permezz tal-Bluetooth.
  4. Within the app, you can adjust various audio parameters, including:
    • Aġġustament tal-gwadann: Variable from 200 mV to 6 V, allowing you to match the ampis-sensittività tad-dħul tal-lifier għall-output tal-unità ewlenija tiegħek.
    • Crossovers: Adjustable High-Pass and Low-Pass Crossovers (32-320 Hz) to filter frequencies for specific speakers.
    • Spinta baxxa: Adjustable at 45 Hz to enhance bass response.
    • Ekwalizzazzjoni: Fine-tune the frequency response.
    • Allinjament tal-Ħin: Adjust speaker delays for optimal sound staging.
    • Illuminazzjoni RGB: Customize the color of the Jensen logo illumination.

4. Manutenzjoni

The Jensen JA4B ampIl-lifier jeħtieġ manutenzjoni minima biex jiżgura prestazzjoni fit-tul.

  • Tindif: Imsaħ perjodikament il- ampImsaħ il-barra tal-lifer b'ċarruta ratba u niexfa biex tneħħi t-trab u l-fdalijiet. Tużax kimiċi ħarxa jew prodotti tat-tindif li joborxu.
  • Ventilazzjoni: Tiżgura li l- ampIx-xewk tat-tkessiħ tal-lifer mhumiex imfixkla. Fluss tal-arja xieraq huwa essenzjali biex jipprevjeni s-sħana żejda.
  • Sostituzzjoni tal-fjus: Jekk il- amplifier does not power on, check the two 25A fuses located on the power input side. Replace blown fuses only with fuses of the same type and rating (25A).
  • Kontroll tal-Konnessjoni: Occasionally inspect all wiring connections for tightness and corrosion. Loose or corroded connections can lead to poor performance or damage.

5 Issolvi l-problemi

If you experience issues with your Jensen JA4B amplifer, irreferi għall-problemi u s-soluzzjonijiet komuni li ġejjin:

ProblemaKawża PossibbliSoluzzjoni
Bla Qawwa / Amplifier Mhux Mixgħul
  • Blown fuse(s).
  • Loose or incorrect power/ground/remote wiring.
  • Il-batterija tal-vettura hija baxxa.
  • Check and replace 25A fuses if necessary.
  • Verify all power, ground, and remote connections are secure and correctly wired. Ensure remote wire receives 12V when head unit is on.
  • Iċċekkja l-batterija tal-vettura voltage.
Ebda Output tal-Ħoss
  • Input signal issue (RCA/High-Level).
  • Speaker wires disconnected or shorted.
  • Is-setting tal-qligħ huwa baxx wisq.
  • Crossover settings incorrect.
  • Check RCA or high-level input connections from head unit. Test head unit output.
  • Verify speaker wire connections at both amplifier and speakers. Check for shorts.
  • Increase gain setting via the DSP app.
  • Adjust crossover settings in the DSP app to ensure desired frequencies are passed.
Ħoss / Storbju Distort
  • Gain setting too high (clipping).
  • Konnessjoni ħażina mal-art.
  • Interference from vehicle's electrical system.
  • Input signal too strong or weak.
  • Potential for system noise with certain head units (as reported by some users).
  • Reduce gain setting via the DSP app.
  • Ensure ground connection is clean, tight, and to bare metal.
  • Route power and signal cables separately. Check for faulty spark plugs, alternator, etc.
  • Adjust head unit output level or ampsensittività tad-dħul tal-lifer.
  • If persistent noise, consider installing a high-quality line output converter (LOC) or ground loop isolator between the head unit and ampinputs aktar ħajjin.
AmpTisħin żejjed tal-lifer
  • Ventilazzjoni insuffiċjenti.
  • Speaker impedance too low.
  • Excessive volume/clipping.
  • Tiżgura amplifier is mounted in a well-ventilated area. Clear any obstructions.
  • Ivverifika l-qbil tal-impedenza tal-ispiker amplifier's capabilities (typically 2-4 ohms per channel).
  • Reduce volume or adjust gain to prevent clipping.

6. Speċifikazzjonijiet

KaratteristikaDettall
Numru tal-MudellJA4B
Numru ta 'Kanali4
AmpKlassi lifierKlassi D Diġitali
Inputs tal-KelliemHigh Level (Speaker Wire), Low Level (RCA)
IlluminazzjoniRGB Custom Color
App ControlYes (Jensen DSP AMP app)
CrossoverAdjustable High and Low-Pass Crossovers (32-320 Hz)
Rispons ta' Frekwenza20 Hz – 20 kHz
Proporzjon tas-sinjal għall-istorbju70 dBA
Total Dynamic Power740 Watts
OutputsRCA Pass Through
Aġġustament tal-gwadannVariable 200 mV ~ 6 V
Adjustable Bass Boost45 Hz
Provvista tal-EnerġijaPWM MOSFET
Fuse Size and Type25A x 2
Dimensjonijiet (H x W x D)2.16″ x 8.38″ x 5.59″ (5.49 cm x 21.29 cm x 14.20 cm)
Wajer tal-Enerġija/Art Rakkomandat4-8 AWG
Recommended Speaker Wire12 - 16 AWG
Voltage6 Volts (DC)
Piż tal-Prodott3.86 Lira (1.75 kg)

7. Garanzija u Appoġġ

Warranty information for the Jensen JA4B amplifier is typically provided with the product packaging or available on the official Jensen website. Please refer to the manufacturer's website for the most current warranty terms and conditions, as well as for technical support resources.

For additional support, frequently asked questions, or to download the latest version of the Jensen DSP AMP App, visit the official Jensen support page or the Jensen Brand Store on Amazon.

Note: This manual does not include embedded videos as no relevant official product videos were available from the seller.

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