MAIN FEATURES
Alpine SWD‑355 12" (300mm) 550W Amplified Subwoofer Enclosure
The Alpine SWD‑355 is a powerful 12" amplified subwoofer enclosure designed to deliver deep, controlled bass without the hassle of sourcing a separate amplifier. With a built‑in 550W (peak) amplifier and a compact, sealed cabinet, it’s an ideal plug‑and‑play solution for drivers wanting a serious low‑frequency upgrade in a tidy, space‑efficient package.
The sealed enclosure and built‑in amplifier give the SWD‑355 a punchy, responsive bass character that enhances any factory or aftermarket system. It’s designed to add depth and warmth without overwhelming the rest of the audio, making it a great all‑rounder for mixed‑genre listening.
KEY FEATURES
- 12" (30cm) amplified subwoofer enclosure with integrated 650W peak amplifier
- Sealed cabinet design for tight, accurate and controlled bass response
- Compact, boot‑friendly enclosure suitable for most vehicles
- Simple wiring with included harness for quick installation
- Durable build with Alpine reliability and clean, modern styling
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
MAIN FEATURES
Alpine SWD‑355 12" (300mm) 550W Amplified Subwoofer Enclosure
The Alpine SWD‑355 is a powerful 12" amplified subwoofer enclosure designed to deliver deep, controlled bass without the hassle of sourcing a separate amplifier. With a built‑in 550W (peak) amplifier and a compact, sealed cabinet, it’s an ideal plug‑and‑play solution for drivers wanting a serious low‑frequency upgrade in a tidy, space‑efficient package.
The sealed enclosure and built‑in amplifier give the SWD‑355 a punchy, responsive bass character that enhances any factory or aftermarket system. It’s designed to add depth and warmth without overwhelming the rest of the audio, making it a great all‑rounder for mixed‑genre listening.
KEY FEATURES
- 12" (30cm) amplified subwoofer enclosure with integrated 650W peak amplifier
- Sealed cabinet design for tight, accurate and controlled bass response
- Compact, boot‑friendly enclosure suitable for most vehicles
- Simple wiring with included harness for quick installation
- Durable build with Alpine reliability and clean, modern styling
MAIN FEATURES
Alpine SWD‑355 12" (300mm) 550W Amplified Subwoofer Enclosure
The Alpine SWD‑355 is a powerful 12" amplified subwoofer enclosure designed to deliver deep, controlled bass without the hassle of sourcing a separate amplifier. With a built‑in 550W (peak) amplifier and a compact, sealed cabinet, it’s an ideal plug‑and‑play solution for drivers wanting a serious low‑frequency upgrade in a tidy, space‑efficient package.
The sealed enclosure and built‑in amplifier give the SWD‑355 a punchy, responsive bass character that enhances any factory or aftermarket system. It’s designed to add depth and warmth without overwhelming the rest of the audio, making it a great all‑rounder for mixed‑genre listening.
KEY FEATURES
- 12" (30cm) amplified subwoofer enclosure with integrated 650W peak amplifier
- Sealed cabinet design for tight, accurate and controlled bass response
- Compact, boot‑friendly enclosure suitable for most vehicles
- Simple wiring with included harness for quick installation
- Durable build with Alpine reliability and clean, modern styling
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
