1. Émbaran Kasalametan
Please read all instructions carefully before installing and operating your Jensen J4W12 subwoofer. Failure to follow these instructions may result in serious injury or damage to the product or vehicle.
- Salawasna pegatkeun sambungan terminal batré négatip kandaraan urang sateuacan dimimitian sagala pagawean listrik.
- Pastikeun sadaya kabel diisolasi sareng diamankeun pikeun nyegah sirkuit pondok sareng karusakan.
- Ulah masang subwoofer di lokasi anu tiasa kakeunaan kalembaban atanapi panas anu kaleuleuwihi.
- Pamasangan profésional disarankeun pikeun kinerja sareng kaamanan anu optimal.
- Do not operate the subwoofer at excessively high volumes for prolonged periods, as this may cause hearing damage.
2. Naon dina Box
Your Jensen J4W12 package includes the following items:
- 1 x Jensen J4W12 Subwoofer
3. Fitur Produk
The Jensen J4W12 subwoofer is engineered to deliver powerful and clear bass for your car audio system.
- 12-Inch High Performance Polypropylene Subwoofer: Designed to provide deep and profound bass.
- Double Stitched Rubber Injected Surround: Ensures accurate and loud music with better heat resistance, internal damping, enhanced bass response, and reliability during high excursion rates.
- Low Resonance Basket Design: Isolates unnecessary vibrations for consistent low resonance and accurate bass.
- Steel Stamped Reinforced Structure: Strong and flexible design to increase linearity and allow greater movement at peak demands for studio-quality sound.
- Digitally Optimized Subwoofer: Engineered for efficient, low-sounding bass, generating 1,200 Watts Peak Power (300 Watts RMS) at 4 Ohms.

Gambar: Hareupeun view of the Jensen J4W12 12-inch subwoofer, showcasing its distinctive blue woofer cone and black rubber surround.
4. Setup jeung Instalasi
Pamasangan anu leres penting pisan pikeun kinerja sareng umur panjang subwoofer anjeun. Turutan pedoman ieu pikeun setelan anu suksés.
4.1 Mounting Flexibility
The J4W12 is designed to work effectively in both sealed and ported enclosures. Choose an enclosure type that best suits your desired bass response and vehicle space.

Image: Jensen J4W12 subwoofer mounted within a ported enclosure, positioned in the trunk of a vehicle, demonstrating a typical installation scenario.
4.2 Diagram Wiring
Refer to the following diagram for proper wiring of your J4W12 subwoofer to an amplifier and head unit. Ensure all connections are secure and correctly polarized.

Image: A detailed wiring diagram illustrating the connection of the Jensen J4W12 subwoofer to a digital mono amplifier, which is then connected via RCA cables to a car head unit, and power/ground/remote wires to the car battery.
4.3 Instalasi Video
Watch this official video for a visual guide on the Jensen J4W12 subwoofer.
Video: Hiji acara video produk resmicasing the Jensen J4W12 12-inch subwoofer, highlighting its features and design.
5. Parentah Operasi
Once installed, follow these steps to operate your subwoofer and integrate it with your car audio system.
- Power-Up mimiti: After installation, turn on your car audio system. Start with the amplifier gain and head unit volume at their lowest settings.
- Ngaluyukeun Gain: Saeutik demi saeutik ningkatkeun amplifier gain until you achieve the desired bass level without distortion. Avoid setting the gain too high, as this can lead to clipping and damage.
- Setélan Crossover: Paké Anjeun amplifier's or head unit's crossover settings to filter out high frequencies from the subwoofer, allowing it to reproduce only the low-frequency sounds it's designed for. A typical low-pass filter setting for a subwoofer is between 80Hz and 120Hz.
- Kontrol Fase: Ékspérimén sareng saklar fase (0 ° atanapi 180 °) dina anjeun amplifier to find the setting that provides the most impactful and cohesive bass response with your other speakers.
- Nguatkeun Bass: The J4W12 features Bass Boost. Use this feature sparingly and with caution to avoid overdriving the subwoofer.
- Kasaluyuan alat: The subwoofer is designed to integrate with car audio systems that can be connected to various devices such as smartphones, tablets, and laptops via the head unit.
6. Pangropéa
To ensure the longevity and optimal performance of your Jensen J4W12 subwoofer, follow these simple maintenance tips:
- beberesih: Regularly wipe the subwoofer cone and surround with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or abrasive cleaners.
- Pamariksaan: Periodically check the wiring connections to ensure they are tight and free from corrosion. Inspect the subwoofer surround for any signs of cracks or damage.
- Perlindungan Lingkungan: Keep the subwoofer away from direct sunlight, extreme temperatures, and moisture. If installed in a trunk, ensure it is not exposed to heavy objects that could cause physical damage.
- Pamakéan ditangtoskeun: Avoid continuously playing the subwoofer at maximum volume or with excessive bass boost, as this can lead to overheating and premature failure.
7. Cara ngungkulan
If you encounter issues with your Jensen J4W12 subwoofer, refer to the following troubleshooting guide:
7.1 No Sound from Subwoofer
- Pariksa kakuatan: Pastikeun amplifier is receiving power and its power indicator light is on. Check the fuse on the amplifier and in the vehicle's power line.
- Pariksa sambungan: Verify all wiring connections (power, ground, remote, RCA, speaker wires) are secure and correctly connected.
- AmpSetélan Lifier: Konfirmasi dina amplifier's gain is not set to minimum, and the crossover is correctly configured (e.g., LPF enabled).
- Head Unit Output: Ensure the head unit is sending an audio signal to the amplifier (check RCA connections and head unit settings).
7.2 Distorted or Weak Bass
- Setélan gain: Ngurangan amplifier's gain if the sound is distorted. If the bass is weak, gradually increase the gain.
- Penyesuaian Crossover: Adjust the low-pass filter (LPF) on your amplifier or head unit. If the LPF is set too high, the subwoofer may play frequencies it's not designed for, causing distortion.
- Phase Setting: Try switching the phase (0° or 180°) on your amplifier. Incorrect phase can cause bass cancellation.
- Integritas Enclosure: Check the subwoofer enclosure for any air leaks or damage, which can negatively impact bass performance.
- Sasayogian tanaga: Ensure your vehicle's electrical system can adequately supply power to the amplifier. A weak power supply can lead to weak or distorted bass.
8. Spésifikasi
Detailed technical specifications for the Jensen J4W12 12-inch Subwoofer:
| Fitur | Spésifikasi |
|---|---|
| Nomer modél | J4W12 |
| merek | Jensen |
| Ukuran Subwoofer | 12 inci |
| Daya Puncak | 1200 Watt |
| Kakuatan RMS | 300 Watt |
| Impedansi | 4 ohm |
| Bahan Congcot Woofer | Polipropilén |
| Bahan Sakuliling | Double Stitched Rubber Injected |
| Basket Design | Low Resonance, Steel Stamped Reinforced |
| Téhnologi konektipitas | Dikabel |
| Fitur husus | Naekeun Bass |
| Dimensi produk | 11 x 11 x 5.75 inci |
| Item Beurat | 10.32 pon |
| Warna | Biru |
| UPC | 827204121863 |
9. Garansi
The Jensen J4W12 subwoofer comes with a standard garansi 2 taun. This warranty can be extended to a garansi 3 taun when registered online with Jensenmobile.com.
Please retain your proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, modification, improper installation, or unauthorized repair.
10. Rojongan
For technical assistance, troubleshooting, or warranty inquiries, please contact Jensen customer support:
- Websitus: Nganjang www.jensenmobile.com pikeun inpormasi produk, FAQ, sareng sumber dukungan.
- Pendaptaran online: Register your product online to activate your extended warranty and receive important updates.





