1. Introduksjon
This manual provides detailed instructions for the installation, operation, and maintenance of your Alpine SWS-12D4 12-inch Dual-Voice-Coil 4-Ohm Subwoofer. Please read this manual thoroughly before attempting installation or operation to ensure proper use and optimal performance. Retain this manual for future reference.

Figure 1: Alpine SWS-12D4 12-inch Subwoofer. This image shows a side view of the subwoofer, highlighting its cone and the robust magnet structure.
2. Sikkerhetsinformasjon
Følg alltid følgende sikkerhetsregler under installasjon og drift:
- Profesjonell installasjon anbefalt: For optimal performance and safety, professional installation by an authorized Alpine dealer is highly recommended.
- Strømfrakobling: Before starting any installation, disconnect the negative terminal of your vehicle's battery to prevent electrical shorts and damage.
- Kabling: Ensure all wiring is correctly connected and insulated to prevent short circuits and potential fire hazards. Use appropriate gauge wire for power and speaker connections.
- Montering: Securely mount the subwoofer to prevent it from becoming a projectile in the event of a sudden stop or collision.
- Ventilasjon: Sørg for tilstrekkelig ventilasjon rundt subwooferen og ampkjøler for å forhindre overoppheting.
- Volumnivåer: Langvarig eksponering for høyt volum kan forårsake hørselsskade. Juster volumet til et komfortabelt nivå.
- Væskeeksponering: Do not expose the subwoofer to moisture or liquids.
3. Oppsett og installasjon
3.1 Krav til innkapsling
The Alpine SWS-12D4 subwoofer is designed to perform optimally in a sealed or ported enclosure. Refer to the subwoofer's technical specifications or Alpine's official website for recommended enclosure volumes and port dimensions. An improperly sized enclosure can negatively impact sound quality and subwoofer longevity.
3.2 Montering av subwooferen
The SWS-12D4 is designed for flush mounting. Ensure the mounting surface is rigid and capable of supporting the subwoofer's weight. Cut a circular opening in the enclosure baffle that matches the subwoofer's cutout diameter. Secure the subwoofer using appropriate screws, ensuring an airtight seal between the subwoofer frame and the enclosure.
3.3 Wiring Configurations
The SWS-12D4 features a Dual-Voice-Coil (DVC) design with two 4-ohm voice coils. This allows for flexible wiring options to match your amplifier's impedance requirements. Common configurations include:
- Parallellkobling (2 ohm): Koble de positive terminalene på begge talespolene sammen, og de negative terminalene på begge talespolene sammen. Koble deretter den kombinerte positive polen til ampdistributørens positive utgang og den kombinerte negative til amplifier's negative output. This results in a 2-ohm load.
- Seriekobling (8 ohm): Koble den positive terminalen på den ene talespolen til den negative terminalen på den andre talespolen. Koble deretter den gjenværende positive terminalen til ampladningsenhetens positive utgang og den gjenværende negative terminalen til amplifier's negative output. This results in an 8-ohm load.
Bekreft alltid din amplifier's stable impedance range before wiring. Incorrect impedance can damage your amplifier eller subwoofer.

Figur 2: Bak view of the Alpine SWS-12D4 subwoofer. This image displays the dual voice coil terminals, essential for understanding wiring configurations.
4. Betjening av subwooferen
4.1 Initial Power-Up and Break-In
After installation, perform an initial power-up at a low volume. Gradually increase the volume to ensure all connections are secure and the subwoofer is functioning correctly. A break-in period of several hours at moderate listening levels is recommended to allow the subwoofer's suspension components to loosen and achieve optimal performance.
4.2 Amplifier innstillinger
Ordentlig amplifier settings are crucial for sound quality and subwoofer longevity. Adjust the following on your amplivligere:
- Gevinst: Still inn amplifier gain to match the output voltage of your head unit. Do not use the gain control as a volume knob; it should be set to prevent clipping.
- Lavpassfilter (LPF): Set the LPF to filter out high frequencies, typically between 60 Hz and 100 Hz, allowing only bass frequencies to reach the subwoofer.
- Subsonisk filter: If available, set the subsonic filter to protect the subwoofer from playing frequencies below its resonant frequency, which can cause damage.
- Bass Boost: Use bass boost sparingly, if at all. Excessive bass boost can lead to clipping and damage the subwoofer.

Figur 3: Øverst view of the Alpine SWS-12D4 subwoofer. This image shows the cone and surround, which are critical for sound reproduction and require careful handling.
5. Vedlikehold
The Alpine SWS-12D4 subwoofer requires minimal maintenance. Follow these guidelines to ensure its longevity:
- Rengjøring: Periodically wipe the subwoofer cone and surround with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or excessive moisture.
- Undersøkelse: Regularly inspect the speaker terminals and wiring for corrosion or loose connections. Ensure the mounting screws are tight.
- Miljøvern: Beskytt subwooferen mot ekstreme temperaturer, direkte sollys og fuktighet.
6. Feilsøking
Hvis du opplever problemer med subwooferen, kan du se følgende vanlige problemer og løsninger:
| Problem | Mulig årsak | Løsning |
|---|---|---|
| Ingen lyd |
|
|
| Forvrengt lyd |
|
|
| Svak bassutgang |
|
|
If problems persist, contact an authorized Alpine service center or your dealer for assistance.
7. Spesifikasjoner
| Trekk | Beskrivelse |
|---|---|
| Modellnummer | SWS-12D4 |
| Høyttalertype | Subwoofer |
| Subwooferdiameter | 12 tommer |
| Konfigurasjon av talespole | Dual Voice Coil (DVC) |
| Nominell impedans | 4 Ohms per voice coil (can be wired to 2 Ohms or 8 Ohms total) |
| Topphåndtering | 1500 watt |
| Monteringstype | Flush Mount |
| Varevekt | 14 pund |
| Produsent | Alpint |
| GTIN / UPC | 793276011848 |
8. Garanti og støtte
8.1 Garantiinformasjon
Alpine products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Alpine webnettstedet. Ta vare på kjøpskvitteringen som kjøpsbevis for garantikrav.
8.2 Kundestøtte
If you require technical assistance, have questions about your product, or need to arrange for service, please contact Alpine customer support. Contact information can typically be found on the Alpine webnettstedet eller i dokumentasjonen som følger med produktet.
Alpin offisiell Webnettsted: www.alpine-usa.com