1. Introduzione è Overview
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. Informazioni di sicurezza
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.
- Installazione prufessiunale cunsigliata: Due to the complexity of car audio systems and vehicle electrical systems, professional installation by a qualified technician is highly recommended.
- Disconnect Battery: Scollegate sempre u terminale negativu di a batteria di u veiculu prima di inizià qualsiasi travagliu d'installazione per prevene cortocircuiti elettrichi è danni.
- cablaggio: Ensure all wiring is correctly routed and secured to prevent pinching, chafing, or short circuits. Use appropriate gauge wiring for power and speaker connections.
- Evite l'acqua è l'umidità: Do not expose the subwoofer to water or excessive moisture. This product is not waterproof.
- Ventilazione: Ensure adequate ventilation around the subwoofer and any associated amplifiers per impediscenu u surriscaldamentu.
- Livelli di volumi: L'esposizione prulungata à livelli di vulume elevati pò causà danni à l'audizione. Ajustate u vulume à un livellu cunfurtevule.
3. Cuntenutu di u pacchettu
Verificate chì tutti l'articuli sò presenti in u pacchettu prima di cuntinuà cù l'installazione.
- 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. Setup è Installazione
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. Cuntrolli Pre-Installazione
- Assicuratevi chì a batteria di u veiculu sia scollegata.
- Confirm the subwoofer's impedance (2 Ohm) is compatible with your ampa stallazione di u lificatore.
- Gather all necessary tools for removing vehicle trim and existing speakers.
4.2. Passi di stallazione
- 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.
- Ricunnette a batteria di u veiculu.

Figura 4.1: Side profile of the Audison AP BMW S8-2 subwoofer, illustrating its shallow mounting depth. This design is optimized for BMW under-seat installations.
5. Operazione
Once installed, the Audison AP BMW S8-2 subwoofer integrates with your car audio system to reproduce low-frequency sounds.
- AmpImpostazioni di lifier: Assicuratevi u vostru 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.
- Corrispondenza di impedenza: 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.
- Periudu di robba: 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. Mantenimentu
The Audison AP BMW S8-2 subwoofer requires minimal maintenance to ensure long-term performance.
- Pulizia: Keep the subwoofer free from dust and debris. Use a soft, dry cloth for cleaning. Avoid using harsh chemicals or abrasive cleaners.
- Cundizioni Ambientali: Avoid exposing the subwoofer to extreme temperatures or direct sunlight for extended periods.
- Cuntrolli di cunnessione: Verificate periodicamente tutti i cunnessione di i fili per assicurassi ch'elli sianu sicuri è senza corrosione.
7. Risoluzione di prublemi
If you experience issues with your Audison AP BMW S8-2 subwoofer, refer to the following common troubleshooting steps.
- Nisun sonu:
- Check all power and ground connections to the amppiù vivu.
- Verificate chì u amplifier is receiving an audio signal from the head unit.
- Ensure speaker wires are securely connected to both the subwoofer and the amplifier, and that polarity is correct.
- Verificate amplifier protection modes (e.g., thermal, short circuit).
- Sonu distortu:
- Riduce u amplifier gain. Excessive gain can cause clipping and distortion.
- Check for loose speaker wires or short circuits.
- Ensure the subwoofer is not over-driven.
- Verificate chì u amplifier's crossover settings are appropriate for a subwoofer.
- Weak or Lack of Bass:
- Verificate 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 amppiù vivu.
If these steps do not resolve the issue, contact a qualified car audio technician or Audison customer support for further assistance.
8. Specificazioni
The following table details the technical specifications for the Audison AP BMW S8-2 Subwoofer.
| Feature | Specificazione |
|---|---|
| Nome di mudellu | APBMW-S8-2 |
| Tipu di parlante | Subwoofer |
| Diametru di u subwoofer | 8 pollici (200 mm) |
| Trattamentu di putenza (Cuntinuu) | 150W RMS |
| Gestione di a putenza (piccu) | 300 W picu |
| Impedenza | 2 Ohms |
| Risposta di Frequency | 40 ÷ 500 Hz |
| Tipu di magnetu | Neodimiu |
| A bobina di voce | 38 mm, wound on aluminum support |
| Dimensioni di u produttu (P x L x A) | 1.24"D x 11.81"W x 4.33"H (approximate, based on product dimensions) |
| Pesu di l'articulu | 3.66 liri |
| Tipu di muntatura | Scorri à u monte |

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. Garanzia è Support
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 websitu.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact Audison customer service or your authorized Audison dealer.





