1. Киришүү
This manual provides detailed instructions for the installation, operation, and maintenance of the Audison AP BMW S8-4 Prima Series 8-inch (200mm) Subwoofer. This subwoofer is specifically designed for direct replacement of OEM speakers in BMW vehicles, optimizing performance within the factory under-seat enclosure.

Сүрөт 1.1: Алдыңкы view of the Audison AP BMW S8-4 Prima Series Subwoofer.
2. Кутуда эмне бар
Этияттык менен мазмунду таңгактан чыгарып, бардык буюмдардын бар экенин текшериңиз:
- Audison AP BMW S8-4 Subwoofer(s)
- Two (2) 5 mm polyurethane gaskets
- Crossover (if applicable to your system configuration)
- Монтаждоо бурамалар
- Колдонуучунун колдонмосу (бул документ)
- Кепилдик маалымат

Image 2.1: Product packaging for the Audison AP BMW S8-4 Subwoofer.

Image 2.2: Included 5mm polyurethane gaskets for optimal fit.
3. Өзгөчөлүктөрү
The Audison AP BMW S8-4 Subwoofer incorporates several design elements for enhanced performance and compatibility:
- Neodymium Magnetic Group: Maximizes performance while minimizing bulk and weight.
- BMW-Mini Optimized Electroacoustic Parameters: Engineered to deliver powerful and clear low frequencies, utilizing the acoustic load provided by the factory enclosure.
- 38 mm Voice Coil: Wound on an aluminum support for significant power dissipation and stability, even during high excursions.
- ABS Plastic Basket: Reinforced with fiberglass for durability and minimal installation depth.
- Front Magnet Design: Contributes to a minimal installation depth, ensuring compatibility with the entire range of BMW under-seat enclosures.
- 4 Ом импеданс: The S8-4 model is designed with a 4 ohm impedance, suitable for system configurations where amplifiers can be bridged to deliver higher power.

Сүрөт 3.1: View of the subwoofer cone and central voice coil area.
4. Техникалык шарттар
| Спецификация | Нарк |
|---|---|
| Модель номери | APBMW-S8-4 |
| Компонент | Вуфер |
| Кубат менен иштөө (үзгүлтүксүз) | 150W RMS |
| Кубат менен иштөө (чоку) | 300 Вт |
| Импеданс | 4 Ом |
| Frequency Response | 35 ÷ 500 Гц |
| Элемент Салмагы | 3 фунт (1.36 кг) |
| Продукциянын өлчөмдөрү (L x W x Y) | 9.41 x 9.41 x 7.52 дюйм (23.9 x 23.9 x 19.1 см) |
| Үн катушкасынын диаметри | 38 мм |
| Магнит түрү | Неодим |

Image 4.1: Technical drawing illustrating the dimensions of the subwoofer.
5. Орнотуу жана орнотуу
The Audison AP BMW S8-4 subwoofer is designed for a direct replacement installation in BMW vehicles, specifically fitting into the factory under-seat enclosures. Professional installation is recommended to ensure optimal performance and avoid damage to the vehicle's electrical system.
5.1. Орнотууга чейинки текшерүүлөр
- Verify the subwoofer's impedance (4 Ohms for S8-4) is compatible with your ampкөтөргүчтүн чыгышы.
- Орнотууну баштоодон мурун, унаанын аккумулятору ажыратылганын текшериңиз.
- Confirm the factory under-seat enclosure is clean and free of debris.
5.2. Орнотуу кадамдары
- Carefully remove the existing OEM speaker from the under-seat enclosure. Refer to your vehicle's service manual for specific removal procedures.
- Place the provided 5 mm polyurethane gaskets onto the subwoofer's mounting surface. These gaskets ensure a perfect seal and decouple the subwoofer from vibrations within the enclosure.
- Position the Audison AP BMW S8-4 subwoofer into the factory enclosure. The design allows for a minimal installation depth, ensuring a proper fit.
- Secure the subwoofer using the provided mounting screws. Do not overtighten.
- Connect the subwoofer wiring to your amplifier. Pay close attention to polarity (+/-) to ensure correct phase.
- Reconnect the vehicle's battery and proceed to system testing.

Сүрөт 5.1: Side profile of the subwoofer, highlighting its compact design for under-seat installation.
6. Иштөө
Once installed, proper tuning of your audio system is crucial for optimal subwoofer performance. The AP BMW S8-4 is designed to integrate seamlessly with your vehicle's acoustics.
6.1. Баштапкы күйгүзүү жана сыноо
- After installation, turn on your car's audio system at a low volume.
- Listen for any unusual noises or distortion. If present, immediately turn off the system and re-check all connections.
- Gradually increase the volume and adjust the subwoofer level on your head unit or ampөмүрлүү.
6.2. Системаны жөндөө
For the best audio experience, consider the following:
- Кроссовер орнотуулары: Төмөн өткөрүүчү чыпканы орнотуңуз amplifier or head unit to prevent higher frequencies from reaching the subwoofer. A common starting point is around 80-100 Hz, but this may vary based on your full-range speakers.
- Фазаны тууралоо: Фазаны орнотуу (0° же 180°) менен эксперимент жасаңыз amplifier or head unit to achieve the most cohesive bass response with your front speakers.
- Пайда орнотуулары: тууралаңыз amplifier gain to match the output voltagБашкы блоктун e. Күчөтүү коэффицентин өтө жогору коюудан алыс болуңуз, анткени бул бурмаланууга жана мүмкүн болгон зыянга алып келиши мүмкүн.
- Digital Sound Processor (DSP): If using a DSP (e.g., Audison AP 8.9 bit), utilize its capabilities for precise equalization, time alignment, and crossover adjustments to maximize the subwoofer's performance.
7. Техникалык тейлөө
The Audison AP BMW S8-4 subwoofer requires minimal maintenance to ensure long-term performance.
- Тазалоо: Periodically clean the subwoofer's grille and surrounding areas with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Экологиялык факторлор: Protect the subwoofer from excessive moisture, extreme temperatures, and direct sunlight, which can degrade materials over time.
- Текшерүү: Occasionally inspect the wiring connections to ensure they remain secure and free from corrosion.
8. Кыйынчылыктарды
If you encounter issues with your Audison AP BMW S8-4 subwoofer, refer to the following common troubleshooting steps:
8.1. No Sound from Subwoofer
- Байланыштарды текшерүү: Ensure all power, ground, remote, and signal cables are securely connected to both the ampкөтөргүч жана сабвуфер.
- Ampкөтөрүүчү Статусу: Сиздин экенин текшериңиз amplifier is powered on (indicated by a power light) and not in protection mode.
- Башкы блоктун жөндөөлөрү: Confirm that the subwoofer output is enabled and the volume is turned up on your head unit.
- Фузер текшерүү: текшерүү amplifier's fuse and the main power fuse for the audio system. Replace if blown.
8.2. Distorted or Weak Bass
- Пайда орнотуулары: тууралаңыз amplifier gain. If set too high, it can cause distortion. If too low, it can result in weak bass.
- Кроссовер орнотуулары: Incorrect crossover settings can lead to distortion or a lack of impact. Adjust the low-pass filter.
- Фаза: Incorrect phase can cause cancellation with other speakers, leading to weak bass. Adjust the phase setting.
- Корпустун бүтүндүгү: Ensure the subwoofer is properly sealed within its enclosure. Air leaks can cause poor performance.
8.3. Intermittent Sound
- Бошоң байланыштар: Re-check all wiring for any loose or corroded connections.
- Signal Cable Interference: Ensure RCA cables are routed away from power cables to prevent noise.
If these steps do not resolve the issue, contact Audison customer support or a qualified car audio technician.
9. Кепилдик жана колдоо
The Audison AP BMW S8-4 Subwoofer comes with a 1 жылдык Өндүрүүчүнүн Кепилдиги. Бул кепилдик нормалдуу колдонуудагы материалдардагы жана жасалгадагы кемчиликтерди камтыйт.
9.1. Кепилдик дооматтары
To make a warranty claim, please retain your proof of purchase and contact your authorized Audison dealer or Audison customer support. The warranty does not cover damage caused by improper installation, abuse, accident, neglect, or unauthorized modification.
9.2. Техникалык колдоо
For technical assistance, installation guidance, or further inquiries, please visit the official Audison website or contact their customer support department. Contact information can typically be found on the Audison webсайтында же продуктуңузга кошулган кепилдик документтеринде.





