Subwoofer CX 12 D2

Enjoy 5% off pre-order products, automatically applied at checkout.

Offer not valid on MTX Audio, Alpine, Focal, Pioneer, Kenwood, Dynavin, JVC and JBL products.

How to understand the displayed delivery times?

For greater transparency, we display the availability of each product in a box at the top of its product page:

• 🟢 In stock: product available in our warehouse, ready to be shipped.
• 🟠 Pre-order – X business days: average time to receive the product in our warehouse before it is shipped to you.

Delivery times are estimates and may vary depending on suppliers and shipping.

We do our best to provide you with clear and reliable information so that you can order with full knowledge of the situation.

Upon receipt of the product, your order is automatically prepared and shipped. You will receive tracking information by email.

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We are here to help you complete your project under the best conditions!

The Sound Auto Concept team.

📦 Preparation and shipping

In-stock products ordered before 12 p.m. are generally shipped the same day. After 12 p.m., shipping generally takes place on the next business day.

Pickups are available Monday through Friday, excluding holidays.

🚚 Our delivery methods

• Chronopost Économique pickup point: free delivery with purchases of €49 or more (4 to 10 business days).
• Chronopost 24h pickup point: fast delivery to a pickup point.
• 24h home delivery: our only home delivery option. Please note that this delivery method is not considered a guaranteed express delivery.

Delivery times begin once the carrier has accepted the package and are provided as estimates in business days.

Important: check that your product is listed as "In stock" on its product page. For pre-orders, shipping takes place only after the product has been received at our warehouse.

Some heavy or bulky packages may incur additional shipping and handling fees, which are automatically displayed in your cart.

⚠️ Receiving your package

Check the condition of your package before accepting it. In the event of damage, make specific reservations with the carrier or refuse the package if necessary.

If you experience any problems, please contact our customer service team promptly.

Unsure about choosing a product or its compatibility? Our team is here to help!

📞 Phone: 09 85 13 66 35

💬 Live chat: directly on our website.

🕒 Our hours:

• Tuesday to Saturday
• Mornings: 9:30 am – 12:00 pm
• Afternoons: 1:30 pm – 6:00 pm

Need help choosing your equipment?

Our advisors can guide you and even prepare your cart directly via chat, with products tailored to your needs.

💪 Take advantage of our technical expertise to order with complete confidence!

The Sound Auto Concept Team

30 cm (12") subwoofer

4000 W/RMS, 8000 W/MAX, 2+2 Ω

Ø 284 mm, ‡ 224 mm

If you are looking for subwoofers that sound great but can also be earth-shattering, you have found them with the COLOSSUS CX from HiFonics . Anyone who has ever "felt" a subwoofer of this class knows how much fun bass can be. It's like displacement or torque in a car, you can't get enough of either. The COLOSSUS CX subwoofers confidently bring their formidable power to the road thanks to triple magnets, double centering and an aluminum dust cap. Thanks to the robust cast aluminum basket, double-stitched beads and the use of a special robust adhesive, the whole thing is extremely durable. Huge 4" (100 mm) dual voice coils with 2 ohms are wound with a special aluminum-copper wire that can withstand heat up to 220°. This means that loads of up to 4,500 W/RMS and even a maximum of 9,000 watts of pulse power are possible. The most important thing in the end: the 30 cm heavyweight creates about 151 dB of sound pressure in the vehicle in a volume of about 75 liters, the 38 cm car reaches about 154 dB in a volume of 100 liters!