Ground Zero GZCS 20SUB-ACT – Compact 8" 340W Active Subwoofer

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.

Need fast delivery? Choose "In stock" products.

🚚 Free delivery on orders over €49 with Chronopost Économique to a pickup point (estimated delivery time of 4 to 10 business days).

Please note: some heavy or bulky parcels cannot be delivered to a pickup point and may require a contribution towards shipping and handling costs.

These costs are automatically calculated and displayed in your cart before you confirm your order.

Other faster delivery methods are also available depending on the products and your delivery address.

📦 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

Highlights

• Compact 20 cm (8-inch) active subwoofer for vehicles with limited space
• Integrated 250W RMS / 340W max amplifier
• Efficient downfiring technology
• Advanced high-level input with dummy load for connection to original car radio
• Quick-release power connector for easy removal

Description

The Ground Zero GZCS 20SUB-ACT is an active 20 cm (8-inch) subwoofer specifically designed for vehicles with limited space. Its compact and flat design allows for discreet installation under seats or in confined spaces, while delivering powerful and controlled bass.

This active subwoofer integrates a 250W RMS (340W max) amplifier perfectly matched to the 8-inch aluminum cone subwoofer. The large wooden enclosure optimizes bass reproduction, while the downfiring technology ensures efficient sound distribution even in confined spaces.

Key Features:

• Robust wooden enclosure for optimal acoustic reproduction
• Efficient downfiring technology for under-seat installation
• Compatible with backfire applications
• Advanced high-level input with dummy load for direct connection to original car radio
• RCA input for connection to amplifier or aftermarket car radio
• Adjustable low-pass filter from 50 to 150 Hz for precise tuning
• 0°/180° phase adjustment to optimize integration with front speakers
• Quick-release power connector for easy subwoofer removal

Technical Specifications

Why Choose It

• Ideal all-in-one solution for adding bass without complex installation
• Compact and flat format perfect for under-seat or small trunk installation
• Integrated 250W RMS amplifier for powerful and controlled bass
• High-level input with dummy load for easy connection to original system
• Rigid aluminum cone for accurate and dynamic reproduction
• Full adjustments (low-pass filter, phase) for optimal integration
• Quick-release power connector for easy subwoofer removal
• Ground Zero quality known for its excellent value for money
• Simple and quick installation without the need for an external amplifier