1. Introdución e finalview
The Audison AP BMW S8-2 Prima Series Subwoofer is an 8-inch (200mm) component designed for direct replacement in BMW vehicles. This subwoofer features a 2 Ohm impedance and is engineered to maximize performance within the factory under-seat enclosures. Its design focuses on delivering powerful and clear low frequencies, enhancing the in-car audio experience.
Key features include a Neodymium magnet for high power and control, a 38mm voice coil wound on an aluminum support for efficient heat dissipation, and an ABS plastic basket reinforced with fiberglass for minimal installation depth. This manual provides essential information for the proper installation, operation, and maintenance of your Audison AP BMW S8-2 subwoofer.

Figura 1.1: Fronte view of the Audison AP BMW S8-2 Prima Series Subwoofer. This image displays the subwoofer's top surface with the Audison logo and model number visible.
2. Información de seguridade
Please read all safety instructions before installing or operating this product. Failure to follow these instructions may result in injury or damage to the product or vehicle.
- Instalación profesional recomendada: Due to the complexity of car audio systems and vehicle electrical systems, professional installation by a qualified technician is highly recommended.
- Desconectar batería: Always disconnect the vehicle's negative battery terminal before beginning any installation work to prevent electrical shorts and damage.
- Cableado: Asegúrate de que todo o cableado estea correctamente instalado e fixado para evitar pellizcos, rozaduras ou curtocircuítos. Usa un cableado do calibre axeitado para as conexións de alimentación e altofalantes.
- Evite a auga e a humidade: Do not expose the subwoofer to water or excessive moisture. This product is not waterproof.
- Ventilación: Ensure adequate ventilation around the subwoofer and any associated amplificadores para evitar o sobrequecemento.
- Niveis de volume: A exposición prolongada a niveis de volume elevados pode causar danos auditivos. Axuste o volume a un nivel cómodo.
3. Contido do paquete
Verifique que todos os elementos estean presentes no paquete antes de continuar coa instalación.
- 1x Audison AP BMW S8-2 Subwoofer
- 2x 5mm Polyurethane Gaskets

Figura 3.1: The two 5mm polyurethane gaskets included with the subwoofer. These gaskets are crucial for proper fitment and vibration decoupling.
4. Configuración e instalación
The Audison AP BMW S8-2 subwoofer is specifically designed for direct replacement of OEM speakers located under the front seats of compatible BMW vehicles. Its shallow design ensures compatibility with the existing factory enclosure.
4.1. Comprobacións previas á instalación
- Asegúrate de que a batería do vehículo estea desconectada.
- Confirm the subwoofer's impedance (2 Ohm) is compatible with your ampconfiguración do lifier.
- Gather all necessary tools for removing vehicle trim and existing speakers.
4.2. Pasos da instalación
- Carefully remove the vehicle's front seats and access the factory subwoofer enclosures. Refer to your vehicle's service manual for specific instructions on seat and trim removal.
- Remove the existing OEM subwoofers from their enclosures.
- Place the two 5mm polyurethane gaskets onto the Audison AP BMW S8-2 subwoofer. These gaskets ensure a tight seal and decouple the subwoofer from vibrations within the enclosure.
- Install the Audison AP BMW S8-2 subwoofer into the factory enclosure. The ABS plastic basket and front magnet design facilitate a minimal installation depth.
- Connect the subwoofer wiring to your amplifier. Ensure correct polarity. The 2 Ohm impedance of the S8-2 allows for maximum power output when used with compatible multi-amplified systems, such as the Audison AP 8.9 bit.
- Secure the subwoofer firmly within the enclosure.
- Reinstall vehicle trim and seats.
- Volva conectar a batería do vehículo.

Figura 4.1: Lado profile of the Audison AP BMW S8-2 subwoofer, illustrating its shallow mounting depth. This design is optimized for BMW under-seat installations.
5. Funcionamento
Once installed, the Audison AP BMW S8-2 subwoofer integrates with your car audio system to reproduce low-frequency sounds.
- AmpConfiguración do lifier: Asegura o teu amplifier's gain, crossover, and phase settings are properly adjusted for optimal performance with the subwoofer. Incorrect settings can lead to poor sound quality or damage.
- Adaptación de impedancia: The 2 Ohm impedance of the AP BMW S8-2 is designed to draw maximum power from compatible amplifiers, such as the Audison AP 8.9 bit, when configured in a fully active, multi-amplified front system. Consult your amplifier's manual for impedance compatibility.
- Período de rodaxe: Allow a break-in period of several hours of normal listening before operating the subwoofer at high volumes. This allows the suspension components to loosen and perform optimally.
6. Mantemento
The Audison AP BMW S8-2 subwoofer requires minimal maintenance to ensure long-term performance.
- Limpeza: Keep the subwoofer free from dust and debris. Use a soft, dry cloth for cleaning. Avoid using harsh chemicals or abrasive cleaners.
- Condicións ambientais: Avoid exposing the subwoofer to extreme temperatures or direct sunlight for extended periods.
- Comprobacións de conexión: Inspeccione periodicamente todas as conexións do cableado para garantir que estean seguras e libres de corrosión.
7 Solución de problemas
If you experience issues with your Audison AP BMW S8-2 subwoofer, refer to the following common troubleshooting steps.
- Sen son:
- Check all power and ground connections to the ampmáis vivo.
- Verifique que o amplifier is receiving an audio signal from the head unit.
- Ensure speaker wires are securely connected to both the subwoofer and the amplificador, e que a polaridade é correcta.
- Comproba amplifier protection modes (e.g., thermal, short circuit).
- Son distorsionado:
- Reducir o amplifier gain. Excessive gain can cause clipping and distortion.
- Check for loose speaker wires or short circuits.
- Ensure the subwoofer is not over-driven.
- Verifique que o amplifier's crossover settings are appropriate for a subwoofer.
- Weak or Lack of Bass:
- Comproba amplifier gain and bass boost settings.
- Verify the phase setting on the amplifier or head unit. Incorrect phase can cancel out bass frequencies.
- Ensure the subwoofer is properly sealed within its enclosure.
- Confirm the subwoofer is receiving sufficient power from the ampmáis vivo.
If these steps do not resolve the issue, contact a qualified car audio technician or Audison customer support for further assistance.
8. Especificacións
The following table details the technical specifications for the Audison AP BMW S8-2 Subwoofer.
| Característica | Especificación |
|---|---|
| Nome do modelo | APBMW-S8-2 |
| Tipo de altofalante | Subwoofer |
| Diámetro do subwoofer | 8 polgadas (200 mm) |
| Manexo de potencia (continuo) | 150 W RMS |
| Manexo de potencia (pico) | Pico de 300 W |
| Impedancia | 2 ohmios |
| Resposta en frecuencia | 40 ÷ 500 Hz |
| Tipo de imán | Neodimio |
| Bobina de voz | 38 mm, wound on aluminum support |
| Dimensións do produto (P x A x A) | 1.24"D x 11.81"W x 4.33"H (approximate, based on product dimensions) |
| Peso do elemento | 3.66 libras |
| Tipo de montaxe | Montar a lavar |

Figura 8.1: Technical drawing illustrating the dimensions of the Audison AP BMW S8-2 subwoofer. This diagram provides precise measurements for installation planning.
9. Garantía e soporte
The Audison AP BMW S8-2 subwoofer comes with a Limited Warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the warranty documentation included with your product or visit the official Audison websitio.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact Audison customer service or your authorized Audison dealer.





