Introduzzjoni
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.

Figura 1: Minn quddiem għal fuq view of the DD Audio 312E-D2 12-inch Subwoofer, showcasing its cone and surround.
Karatteristiċi tal-Prodott
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.
Informazzjoni dwar is-Sigurtà
Observe the following safety guidelines to prevent injury and damage to the subwoofer or vehicle:
- Dejjem skonnettja t-terminal negattiv tal-batterija tal-vettura qabel tibda kwalunkwe xogħol elettriku.
- Ensure proper wiring polarity to prevent damage to the subwoofer and ampaktar ħaj.
- Uża wajers ta' daqs xieraq għall-konnessjonijiet tal-enerġija u tal-ispikers biex timmaniġġja r-rekwiżiti tal-enerġija tas-subwoofer.
- Immonta s-subwoofer sew biex tevita li jsir projettili f'każ ta' waqfien f'daqqa jew aċċident.
- Avoid prolonged exposure to extremely high volume levels, which can cause hearing damage.
- Ikkonsulta installatur professjonali jekk m'intix ċert dwar xi aspett tal-proċess tal-installazzjoni.
Kontenut tal-Pakkett
Iċċekkja li l-oġġetti kollha huma preżenti meta tiftaħ il-pakkett:
- One (1) DD Audio 312E-D2 12-inch Subwoofer
- Manwal ta 'Istruzzjoni (dan id-dokument)
Setup u Installazzjoni
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. Immuntar tas-Subwoofer
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.

Figura 2: Ġenb view of the DD Audio 312E-D2 subwoofer, highlighting the speaker terminals for wiring connections.
3. Konnessjonijiet tal-Wiring
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.
- Tagħbija ta' 1 Ohm (Wajers Paralleli): Connect both voice coils in parallel. This configuration results in a 1-Ohm load, suitable for amplifiers stable at 1-Ohm.
- Tagħbija ta' 4 Ohm (Wajers tas-Serje): Connect both voice coils in series. This configuration results in a 4-Ohm load, suitable for amplifiers stable at 4-Ohm.
Irreferi għal tiegħek amplifier's manual for specific wiring diagrams and impedance compatibility. Ensure all connections are secure and properly insulated to prevent short circuits.

Figura 3: Qiegħ view of the DD Audio 312E-D2 subwoofer, displaying the magnet structure and model identification.
Istruzzjonijiet Operattivi
Once installed, follow these guidelines for optimal performance and longevity:
- Perjodu ta' Break-in: 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.
- Immaniġġjar tal-Enerġija: The 312E-D2 has a continuous RMS power rating of 500 Watts and a peak power rating of 1500 Watts. Ensure your ampL-output tal-lifier jaqbel ma' dawn l-ispeċifikazzjonijiet biex jipprevjeni l-ħsara.
- Issettjar tal-Gwadann: Issettja tiegħek 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.
- Settings tal-crossover: Uża filtru low-pass (LPF) fuq tiegħek amplifier or head unit to send only low-frequency signals to the subwoofer. A typical LPF setting for subwoofers is between 60Hz and 100Hz.
Manutenzjoni
The DD Audio 312E-D2 subwoofer requires minimal maintenance:
- Tindif: Use a soft, dry cloth to wipe down the cone and surround. Avoid using harsh chemicals or excessive moisture.
- Spezzjoni: Periodically check all wiring connections for tightness and signs of corrosion. Inspect the subwoofer's cone and surround for any tears or damage.
- Ambjent: Ensure the subwoofer is installed in an environment free from excessive moisture, direct sunlight, and extreme temperatures.
Issolvi l-problemi
Jekk tiltaqa' ma' problemi bis-subwoofer tiegħek, irreferi għall-problemi u s-soluzzjonijiet komuni li ġejjin:
- Ebda Ħsejjes:
- Iċċekkja l-konnessjonijiet tal-wajers kollha (enerġija, art, remote, RCA, speaker).
- Ivverifika l- amplifier is powered on and not in protection mode.
- Kun żgur li l-unità ewlenija qed tibgħat sinjal awdjo.
- Check for blown fuses in the power line or ampaktar ħaj.
- Ħoss Mgħawġ:
- Naqqas il- amplifier gain or head unit volume to prevent clipping.
- Check for proper crossover settings.
- Inspect speaker wires for shorts or damage.
- Ensure the subwoofer is not over-excursing.
- Subwoofer Overheating:
- Ivverifika l- amplifier's impedance load matches the subwoofer's wiring configuration.
- Tiżgura ventilazzjoni adegwata madwar il- ampaktar ħaj.
- Reduce prolonged high-volume playback.
If problems persist after troubleshooting, contact DD Audio customer support or a qualified service technician.
Speċifikazzjonijiet
Detailed technical specifications for the DD Audio 312E-D2 12-inch Subwoofer:
| Speċifikazzjoni | Valur |
|---|---|
| Daqs tal-Kelliem | 12 Pulzier |
| Immaniġġjar tal-Enerġija RMS | 500 Watts |
| L-Immaniġġjar ta' l-Ogħla Qawwa | 1500 Watts |
| Impedenza | Dual 2-Ohm (D2) |
| Dijametru tal-Kolja tal-Vuċi (VCD) | 2.5 Pulzier |
| Frekwenza tar-Reżonanza (Fs) | 37 Hz |
| Q mekkaniku (Qms) | 5.44 |
| Q Elettriku (Qes) | 0.73 |
| Q totali (Qts) | 0.64 |
| Volum Ekwivalenti (Vas) | 22.31 Litri |
| Fattur tal-Forza (BL) | 26 TM |
| Mechanical Excursion (Xmech) | 30 MM |
| Eskursjoni Lineari (Xmax) | 14 MM |
| Frame Outer Diameter (OD) | 15.02 Pulzier |
| Frame OD with Gasket | 12.4 Pulzier |
| Dijametru tal-Immuntar | 13.89 Pulzier |
| Fond tal-Immuntar | 7.32 Pulzier |
| Dijametru tal-Mutur | 6.69 Pulzier |
| Motor Depth | 2.59 Pulzier |
| Piż tal-kalamita | 100 Oz |
| Spostament tal-Woofer | 0.1 CuFt |
| Recommended Ported Enclosure Volume | 1.75 - 2.75 CuFt |
| Piż tal-oġġett | 17 Liri |
| Manifattur | DD Awdjo |
| Isem tal-Mudell | 312E-D2 |
Garanzija u Appoġġ
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 websit. Żomm il-prova tax-xiri tiegħek għal talbiet ta' garanzija.
For technical support, service, or questions regarding your DD Audio product, please contact DD Audio customer service through their official website or authorized dealer.
Uffiċjali tal-Awdjo DD Websit: ddaudio.com





