1. Fampidirana
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. Information momba ny fiarovana
Tandremo hatrany ireto fepetra fiarovana manaraka ireto mandritra ny fametrahana sy ny fandidiana:
- Fametrahana matihanina naroso: For optimal performance and safety, professional installation by an authorized Alpine dealer is highly recommended.
- Fanapahan-jiro: Before starting any installation, disconnect the negative terminal of your vehicle's battery to prevent electrical shorts and damage.
- Wiring: 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.
- Mametraka: Securely mount the subwoofer to prevent it from becoming a projectile in the event of a sudden stop or collision.
- rivotra: Ensure adequate ventilation around the subwoofer and amplifier mba hisorohana ny hafanana be loatra.
- Haben'ny volume: Prolonged exposure to high volume levels can cause hearing damage. Adjust volume to a comfortable level.
- Fipoahana ranon-javatra: Do not expose the subwoofer to moisture or liquids.
3. Fametrahana sy fametrahana
3.1 Fepetra takiana amin'ny fefy
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 Fametrahana ny Subwoofer
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 Fandaminana ny tariby
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:
- Tariby mifanitsy (2 Ohms): Connect the positive terminals of both voice coils together, and the negative terminals of both voice coils together. Then connect the combined positive to the ampny vokatra tsara an'ny lifier sy ny ratsy mitambatra amin'ny amplifier's negative output. This results in a 2-ohm load.
- Tariby andiany (8 Ohms): Connect the positive terminal of one voice coil to the negative terminal of the other voice coil. Then connect the remaining positive terminal to the ampny vokatra tsara an'ny lifier sy ny terminal ratsy sisa tavela amin'ny amplifier's negative output. This results in an 8-ohm load.
Always verify your amplifier's stable impedance range before wiring. Incorrect impedance can damage your ampLifier na subwoofer.

Sary 2: aoriana view of the Alpine SWS-12D4 subwoofer. This image displays the dual voice coil terminals, essential for understanding wiring configurations.
4. Fampandehanana ny Subwoofer
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 Settings
Anarana amplifier settings are crucial for sound quality and subwoofer longevity. Adjust the following on your ampLitera:
- tombony: Set ny 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.
- Sivana Low Pass (LPF): Set the LPF to filter out high frequencies, typically between 60 Hz and 100 Hz, allowing only bass frequencies to reach the subwoofer.
- Sivana Subsonika: If available, set the subsonic filter to protect the subwoofer from playing frequencies below its resonant frequency, which can cause damage.
- Fampiroboroboana Bass: Use bass boost sparingly, if at all. Excessive bass boost can lead to clipping and damage the subwoofer.

Sary 3: Ambony 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. Fikojakojana
The Alpine SWS-12D4 subwoofer requires minimal maintenance. Follow these guidelines to ensure its longevity:
- Fanadiovana: Periodically wipe the subwoofer cone and surround with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or excessive moisture.
- Fanaraha-maso: Regularly inspect the speaker terminals and wiring for corrosion or loose connections. Ensure the mounting screws are tight.
- Fiarovana ny tontolo iainana: Protect the subwoofer from extreme temperatures, direct sunlight, and moisture.
6. Famahana olana
If you experience issues with your subwoofer, refer to the following common problems and solutions:
| OLANA | Antony mety hitranga | vahaolana |
|---|---|---|
| Tsy misy feo |
|
|
| Feo diso |
|
|
| Famoahana Bass Malemy |
|
|
If problems persist, contact an authorized Alpine service center or your dealer for assistance.
7. Famaritana
| endri-javatra | Description |
|---|---|
| Laharana modely | SWS-12D4 |
| Karazana mpandahateny | Subwoofer |
| Subwoofer savaivony | 12 santimetatra |
| Voice Coil Configuration | Roa sosona feo (DVC) |
| Impedance Nominal | 4 Ohms per voice coil (can be wired to 2 Ohms or 8 Ohms total) |
| Fikarakarana ny hery ambony indrindra | 1500 Watts |
| Karazana fametrahana | Tendrombohitra mamba |
| Lanja entana | 14 kilao |
| mpanamboatra | Alpine |
| GTIN / UPC | 793276011848 |
8. Warranty sy fanohanana
8.1 Fampahalalana momba ny fiantohana
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 website. Tehirizo ny tapakila fividiananao ho porofon'ny fividianana ho an'ny fitakiana fiantohana.
8.2 Fanohanana ny mpanjifa
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 webtranokala na ao amin'ny antontan-taratasy omena miaraka amin'ny vokatrao.
Alpine Official Webtranokala: www.alpine-usa.com





