pengenalan
This manual provides detailed instructions for the installation, operation, and maintenance of your DD Audio 312E-D2 12-inch Subwoofer. To ensure optimal performance and longevity of your product, please read this manual thoroughly before installation and use. Retain this manual for future reference.

Rajah 1: Bahagian hadapan view of the DD Audio 312E-D2 12-inch Subwoofer, showcasing kon dan kelilingnya.
Ciri-ciri Produk
The DD Audio 312E-D2 subwoofer incorporates advanced design elements for enhanced audio performance and durability:
- Free Flow Cooling System: Designed to dissipate heat efficiently, ensuring stable performance during extended use.
- High-Temperature Voice Coil: Constructed to withstand high power levels without degradation.
- Dual Layer Spider System with Integrated Tinsel Leads: Provides robust cone control and reliable electrical connection.
- Extended Pole Piece: Optimizes magnetic field linearity for reduced distortion.
- DD Logo Basket: Aesthetically designed and structurally rigid.
- Double Stitched EROM Surrounds: Enhances durability and excursion capabilities.
- Fiberglass Loaded Non-Pressed Cones: Offers a balance of rigidity and light weight for accurate sound reproduction.
- Embossed DDesign Magnet Boot: Protects the magnet assembly and adds to the product's finish.
Maklumat Keselamatan
Observe the following safety guidelines to prevent injury and damage to the subwoofer or vehicle:
- Sentiasa putuskan sambungan terminal negatif bateri kenderaan sebelum memulakan sebarang kerja elektrik.
- Ensure proper wiring polarity to prevent damage to the subwoofer and amplebih hidup.
- Use appropriate gauge wiring for power and speaker connections to handle the subwoofer's power requirements.
- Mount the subwoofer securely to prevent it from becoming a projectile in the event of a sudden stop or accident.
- Elakkan pendedahan berpanjangan kepada tahap kelantangan yang sangat tinggi, yang boleh menyebabkan kerosakan pendengaran.
- Consult a professional installer if you are unsure about any aspect of the installation process.
Kandungan Pakej
Sahkan bahawa semua item ada semasa membongkar:
- One (1) DD Audio 312E-D2 12-inch Subwoofer
- Manual Arahan (dokumen ini)
Persediaan dan Pemasangan
Proper installation is critical for the performance and safety of your subwoofer. If you are not experienced with car audio installation, it is recommended to seek professional assistance.
1. Enclosure Selection and Construction
The 312E-D2 subwoofer is designed for optimal performance in a ported enclosure. The recommended volume for a ported enclosure is between 1.75 and 2.75 cubic feet. Consult a car audio specialist or use specialized software for precise enclosure design, including port dimensions, to match your specific vehicle and listening preferences.
2. Memasang Subwufer
Ensure the mounting surface is rigid and free from obstructions. The subwoofer requires a mounting diameter of 13.89 inches and a mounting depth of 7.32 inches. Use appropriate fasteners to secure the subwoofer firmly into the enclosure.

Rajah 2: Sisi view of the DD Audio 312E-D2 subwoofer, highlighting the speaker terminals for wiring connections.
3. Sambungan Pendawaian
The 312E-D2 features a dual 2-Ohm voice coil configuration. This allows for various wiring options to achieve different final impedances at the amplifier. Always verify the amplifier's stable impedance range before connecting.
- Beban 1-Ohm (Pendawaian Selari): Connect both voice coils in parallel. This configuration results in a 1-Ohm load, suitable for amplifiers stable at 1-Ohm.
- Beban 4-Ohm (Pendawaian Siri): Connect both voice coils in series. This configuration results in a 4-Ohm load, suitable for amplifiers stable at 4-Ohm.
Rujuk kepada anda amplifier's manual for specific wiring diagrams and impedance compatibility. Ensure all connections are secure and properly insulated to prevent short circuits.

Rajah 3: Bawah view of the DD Audio 312E-D2 subwoofer, displaying the magnet structure and model identification.
Arahan Operasi
Once installed, follow these guidelines for optimal performance and longevity:
- Tempoh Pecah Masuk: Allow a break-in period of approximately 20-30 hours of normal listening before operating the subwoofer at peak power levels. This allows the suspension components to loosen and reach their optimal compliance.
- Pengendalian Kuasa: The 312E-D2 has a continuous RMS power rating of 500 Watts and a peak power rating of 1500 Watts. Ensure your ampOutput lifier sepadan dengan spesifikasi ini untuk mengelakkan kerosakan.
- Tetapan Keuntungan: Tetapkan anda amplifier's gain correctly to match the output voltage of your head unit. Incorrect gain settings can lead to clipping and damage to the subwoofer.
- Tetapan Crossover: Gunakan penapis laluan rendah (LPF) pada anda amplifier or head unit to send only low-frequency signals to the subwoofer. A typical LPF setting for subwoofers is between 60Hz and 100Hz.
Penyelenggaraan
The DD Audio 312E-D2 subwoofer requires minimal maintenance:
- Pembersihan: Gunakan kain lembut dan kering untuk mengelap kon dan sekelilingnya. Elakkan menggunakan bahan kimia yang keras atau kelembapan berlebihan.
- Pemeriksaan: Periodically check all wiring connections for tightness and signs of corrosion. Inspect the subwoofer's cone and surround for any tears or damage.
- Persekitaran: Ensure the subwoofer is installed in an environment free from excessive moisture, direct sunlight, and extreme temperatures.
Menyelesaikan masalah
Jika anda menghadapi masalah dengan subwufer anda, rujuk kepada masalah dan penyelesaian biasa berikut:
- Tiada Bunyi:
- Check all wiring connections (power, ground, remote, RCA, speaker).
- Sahkan ampPengaktif dihidupkan dan bukan dalam mod perlindungan.
- Ensure the head unit is sending an audio signal.
- Check for blown fuses in the power line or amplebih hidup.
- Bunyi Herot:
- Kurangkan amplifier gain or head unit volume to prevent clipping.
- Check for proper crossover settings.
- Periksa wayar pembesar suara untuk sebarang selak pintas atau kerosakan.
- Ensure the subwoofer is not over-excursing.
- Subwoofer Overheating:
- Sahkan amplifier's impedance load matches the subwoofer's wiring configuration.
- Pastikan pengudaraan yang mencukupi di sekeliling amplebih hidup.
- Reduce prolonged high-volume playback.
If problems persist after troubleshooting, contact DD Audio customer support or a qualified service technician.
Spesifikasi
Detailed technical specifications for the DD Audio 312E-D2 12-inch Subwoofer:
| Spesifikasi | Nilai |
|---|---|
| Saiz Pembesar Suara | 12 Inci |
| Pengendalian Kuasa RMS | 500 Watt |
| Pengendalian Kuasa Puncak | 1500 Watt |
| Impedans | Dual 2-Ohm (D2) |
| Voice Coil Diameter (VCD) | 2.5 Inci |
| Kekerapan Resonans (Fs) | 37 Hz |
| Q Mekanikal (Qms) | 5.44 |
| Q Elektrik (Qes) | 0.73 |
| Jumlah Q (Qts) | 0.64 |
| Isipadu Setara (Vas) | 22.31 Liter |
| Faktor Daya (BL) | 26 TM |
| Mechanical Excursion (Xmech) | 30 MM |
| Lawatan Linear (Xmax) | 14 MM |
| Frame Outer Diameter (OD) | 15.02 Inci |
| Frame OD with Gasket | 12.4 Inci |
| Diameter Pemasangan | 13.89 Inci |
| Kedalaman Pemasangan | 7.32 Inci |
| Diameter Motor | 6.69 Inci |
| Motor Depth | 2.59 Inci |
| Berat Magnet | 100 Oz |
| Anjakan Woofer | 0.1 CuFt |
| Recommended Ported Enclosure Volume | 1.75 - 2.75 CuFt |
| Berat Barang | 17 paun |
| Pengeluar | Audio DD |
| Nama Model | 312E-D2 |
Waranti dan Sokongan
The DD Audio 312E-D2 subwoofer comes with a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official DD Audio webtapak. Simpan bukti pembelian anda untuk tuntutan waranti.
For technical support, service, or questions regarding your DD Audio product, please contact DD Audio customer service through their official website or authorized dealer.
DD Audio Official Webtapak: ddaudio.com





