پیژندنه
This manual provides essential information for the proper installation, operation, and maintenance of your DD Audio 812F-D1 12-inch Dual 1-Ohm 7500W Subwoofer. Please read these instructions thoroughly before attempting to install or operate the subwoofer to ensure optimal performance and longevity.
کلیدي ځانګړتیاوې
- Advanced Thermal Management: Features a vented aluminum voice coil insert and finned aluminum heatsink designed to efficiently dissipate heat from critical components, ensuring sustained high-performance operation.
- Enhanced Excursion Capability: Equipped with a taller surround, double-stitched to a fiberglass-loaded, non-pressed cone, and a voice coil with increased winding length, supported by a double-layer spider for greater Xmax.
- قوي ساختمان: Engineered for durability and high power handling, converting raw power into clean audio output.
- جمالیاتی ډیزاین: The heatsink features polished aluminum DD logos, and the motor is encased in an embossed rubber boot.
مشخصات

انځور 1: مخکی view د DD آډیو 812F-D1 سب ووفر، شوکasinمخروط او شاوخوا یې پوښ کړئ.
| مشخصات | ارزښت |
|---|---|
| د سپیکر اندازه | ۷۸۷ انچه |
| واټ RMS | 2500W |
| Watts Peak | 7500W |
| خنډ | Dual 1-Ohm (D1) |
| د غږ کویل قطر (VCD) | ۷۸۷ انچه |
| د پسټون قطر | ۷۸۷ انچه |
| Fs (د غږ فریکونسي) | 34 Hz |
| Qms (میخانیکي Q فکتور) | 6.282 |
| Qes (د بریښنا Q فکتور) | 0.601 |
| د Qts (ټول Q فکتور) | 0.548 |
| واس (مساوي حجم) | 18.84 لیتره |
| Xmech (Mechanical Excursion) | 100 MM |
| Xmax (لینیر سفر) | 31 MM |
| Frame OD (Outer Diameter) | ۷۸۷ انچه |
| Frame OD w/Gasket | ۷۸۷ انچه |
| د غونډلو قطر | ۷۸۷ انچه |
| د نصب کولو ژوروالی | ۷۸۷ انچه |
| د موټرو قطر | ۷۸۷ انچه |
| د موټرو ژوروالی | ۷۸۷ انچه |
| د پورټ شوي انکلوژر حجم وړاندیز شوی | ۳.۰ - ۶.۰ مکعب فټ |
| د توکي وزن | 80 پونډه |
| مواد | المونیم |
تنظیم او نصب کول
Proper installation is crucial for the performance and longevity of your subwoofer. If you are unsure about any steps, it is recommended to seek assistance from a professional installer.
1. Enclosure Selection and Construction
The DD Audio 812F-D1 is designed for optimal performance in a ported enclosure. Refer to the specifications section for recommended enclosure volumes (1.75 - 3.0 CuFt). Ensure the enclosure is robust, sealed properly, and adequately braced to prevent rattles and resonance. The mounting diameter required is 11.34 inches and mounting depth is 11 inches.

انځور ۱.۱: زاویه لرونکی view of the DD Audio 812F-D1 subwoofer, highlighting the robust motor structure.
2. Wiring and Impedance
This subwoofer features a Dual 1-Ohm voice coil configuration. It is critical to wire the voice coils correctly to achieve the desired impedance load for your amplifier. Common wiring configurations include:
- موازي تارونه (۰.۵ اوهم): Connect positive to positive and negative to negative terminals of both voice coils. This results in a 0.5 Ohm load, which requires an amplifier stable at this impedance.
- د لړۍ تارونه (2 اوهم): Connect the positive of one voice coil to the negative of the other. The remaining positive and negative terminals are then connected to the amplifier. This results in a 2 Ohm load.
تل خپل ځان ډاډمن کړئ amplifier is stable at the chosen impedance. Using an amplifier with an impedance lower than its stable rating can cause damage to both the ampلایفیر او subwoofer.
3. Ampد ژوندۍ مطابقت
Match the subwoofer's RMS power handling (2500W) with an amplifier that can provide sufficient clean power at the selected impedance. Underpowering a subwoofer can be as damaging as overpowering it, as it can lead to ampد ژوندي کولو کلپ کول او تحریف شوي سیګنالونه.
4. Secure Mounting
Mount the subwoofer securely within the enclosure using appropriate fasteners. Ensure there is no air leakage around the mounting flange.
عملیاتي لارښوونې
Follow these guidelines for safe and optimal operation of your subwoofer.
- د وقفې موده: د فرعي ووفر په لوړ حجم چلولو دمخه د شاوخوا 20-30 ساعتونو لپاره د منځنۍ اوریدلو وقفې ته اجازه ورکړئ. دا د تعلیق اجزاو ته اجازه ورکوي چې نرم شي او په غوره توګه فعالیت وکړي.
- د ګټې ترتیب: ترتیب کړئ ampد محصول حجم سره سمون لپاره د لایفیر ګټه په سمه توګهtage of your head unit. Incorrect gain settings can lead to clipping and damage. Use a digital multimeter or oscilloscope for precise gain setting.
- د کراس اوور ترتیبات: Utilize a low-pass filter (LPF) on your amplifier or head unit to send only low frequencies to the subwoofer. A typical starting point for LPF is 60-80 Hz.
- سبسونیک فلټر: Use a subsonic filter (high-pass filter for the subwoofer) to protect the subwoofer from playing frequencies below its tuning frequency, which can cause excessive excursion and damage.
- د تحریف لپاره واورئ: If you hear any distortion, rattling, or unusual noises, immediately reduce the volume. Continuous operation with distortion can cause permanent damage.

Image 3: Rear angled view of the DD Audio 812F-D1 subwoofer, showing the motor and terminal connections.
ساتنه
The DD Audio 812F-D1 subwoofer requires minimal maintenance to ensure long-term performance.
- منظم معاینه: Periodically inspect the subwoofer cone, surround, and dust cap for any signs of damage, tears, or punctures.
- پاکوالی: Keep the subwoofer free from dust and debris. Use a soft, dry cloth to gently wipe surfaces. Avoid using harsh chemicals or excessive moisture.
- د پیوستون چک: Ensure all wiring connections remain secure and free from corrosion. Loose connections can lead to signal loss or damage.
- د چاپیریال ساتنه: Protect the subwoofer from extreme temperatures, direct sunlight, and moisture, which can degrade materials over time.
د ستونزو حل کول
If you experience issues with your subwoofer, consult the following common troubleshooting steps.
- غږ نشته:
- د بریښنا او ځمکې ټولې اړیکې وګورئ ampلايف
- Verify RCA signal cables are securely connected from the head unit to the ampلايف
- ډاډ ترلاسه کړئ amplifier is powered on (check power indicator light).
- Confirm the subwoofer wires are correctly connected to the amplifier and the subwoofer terminals.
- چک ampد ژوندي کولو فیوزونه.
- تحریف شوی غږ:
- کم کړئ ampد لایفیر ګټې تنظیم.
- Check for proper crossover settings; ensure the subwoofer is not playing frequencies too high.
- Inspect the subwoofer cone and surround for physical damage.
- ډاډ ترلاسه کړئ amplifier is not clipping (indicated by a clipping light on some ampژوند کونکي).
- کمزوری باس محصول:
- تایید کړئ amplifier gain is set appropriately.
- Check phase settings on the ampلیفیر یا سر واحد.
- Ensure the enclosure is sealed and properly constructed.
- Confirm correct wiring impedance for the ampلايف
- د سب ووفر ډیر ګرمیدل:
- Reduce volume and allow the subwoofer to cool.
- تایید کړئ amplifier is matched correctly to the subwoofer's RMS power handling.
- د شاوخوا شاوخوا هوا مناسبه هوا یقیني کړئ ampلایفیر او subwoofer.
- Check for proper impedance matching.

انځور ۲.۱: ښکته view of the DD Audio 812F-D1 subwoofer motor, showing the heatsink design.
د تضمین معلومات
The DD Audio 812F-D1 Subwoofer comes with a محدود تضمین. Specific terms and conditions of the warranty are typically provided with the product packaging or can be obtained from the manufacturer's official webسایټ. مهرباني وکړئ د هر ډول تضمین ادعا لپاره د پیرود ثبوت وساتئ.
This warranty generally covers defects in materials and workmanship under normal use. It typically does not cover damage resulting from improper installation, abuse, accident, neglect, unauthorized repair, or modifications.
ملاتړ
For further assistance, technical support, or warranty inquiries, please contact DD Audio customer support or the authorized retailer from whom you purchased the product. Refer to the official DD Audio webد اړیکو معلوماتو او اضافي سرچینو لپاره سایټ.
Note: Always ensure to provide your product model (812F-D1) and proof of purchase when contacting support.





