Customer service: Mon.–Sat. • 9:30 a.m.–12 p.m. / 1:30 p.m.–6 p.m. • 09 85 13 66 35

Current promotions! Discover our leading brands at reduced prices!

✅ En stock 300 Watts RMS
12% off
Soundmax  |  SKU: SX-FX12.D4

Soundmax SX-FX12 12" 2x4 Ohms

€73.92 €84.00
Tax included Shipping calculated at checkout.

Pre-order - Lead times and availability

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 from €49*

🚚 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.

Delivery information

📦 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.

Advisory Service

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

Description

Highlights

  • Dual voice coil 2x4 Ohms – wiring flexibility: 2 Ohms (series) or 8 Ohms (parallel)
  • 300W RMS / 1200W max for rich, deep, and controlled bass
  • Large cone area 491 cm² for efficient air displacement
  • 2-inch voice coil with optimized ventilation – durability and power handling
  • Resonance frequency Fs 37.35 Hz – ideal for deep bass in a bass-reflex enclosure
  • Standard 12" size: compatible with most commercial enclosures

Description

The Soundmax SX-FX12 D4 is the dual voice coil version of the SX-FX12, offering additional wiring flexibility to adapt to all amplification configurations. With 300W RMS and a cone area of 491 cm², it delivers rich and controlled bass with a smooth transition to the mid-range. Its ventilated 2-inch voice coil and robust magnetic structure ensure durable performance even under intensive use.

  • Parallel wiring: 2 Ohms – maximum amplifier power
  • Series wiring: 8 Ohms – for high-impedance amplifiers
  • Outer diameter Ø 312 mm, mounting hole Ø 292 mm – compatible with standard 12" enclosures
  • Mounting depth 142 mm – plan for necessary space
  • Available at Sound Auto Concept, your car audio specialist.

Technical Specifications

Size 12" (30 cm)
RMS Power 300W
MAX Power 1200W
Frequency 35 – 1500 Hz
Impedance 2 x 4 Ohms (dual voice coil)
DC Resistance (Re) 2 x 3.6 Ohms
Sensitivity 89 dB
Voice Coil 2 inches
Cone Area (Sd) 491 cm²
Moving Mass (Mms) 134.97 g
Compliance (Cms) 0.1261 mm/N
Equivalent Volume (Vas) 42.43 L
Resonance Frequency (Fs) 37.35 Hz
Qes 2.27
Qms 5.76
Qts 1.63
Outer Diameter Ø 312 mm
Mounting Depth 142 mm
Mounting Hole Ø 292 mm
Weight 3.5 kg
SKU SX-FX12.D4
MPN SX-FX12.D4
EAN / GTIN 8698814004141

Why choose it?

  • Dual voice coil 2x4 Ohms: maximum flexibility to adapt to any amplifier
  • Fs 37.35 Hz and Vas 42.43 L: ideal parameters for an optimized bass-reflex enclosure
  • 300W RMS in a standard 12" format: maximum power and compatibility
  • Complete Thiele-Small parameters for accurate enclosure volume calculation

Very popular at the moment
Many people are looking at this product right now.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Bizum
  • BLIK
  • Cartes Bancaires
  • EPS
  • Mastercard
  • MB WAY
  • MobilePay
  • PayPal
  • Satispay
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store your credit card details and do not have access to your credit card information.

Soundmax

Soundmax SX-FX12 12" 2x4 Ohms

€73.92 €84.00

Highlights

Description

The Soundmax SX-FX12 D4 is the dual voice coil version of the SX-FX12, offering additional wiring flexibility to adapt to all amplification configurations. With 300W RMS and a cone area of 491 cm², it delivers rich and controlled bass with a smooth transition to the mid-range. Its ventilated 2-inch voice coil and robust magnetic structure ensure durable performance even under intensive use.

Technical Specifications

Size 12" (30 cm)
RMS Power 300W
MAX Power 1200W
Frequency 35 – 1500 Hz
Impedance 2 x 4 Ohms (dual voice coil)
DC Resistance (Re) 2 x 3.6 Ohms
Sensitivity 89 dB
Voice Coil 2 inches
Cone Area (Sd) 491 cm²
Moving Mass (Mms) 134.97 g
Compliance (Cms) 0.1261 mm/N
Equivalent Volume (Vas) 42.43 L
Resonance Frequency (Fs) 37.35 Hz
Qes 2.27
Qms 5.76
Qts 1.63
Outer Diameter Ø 312 mm
Mounting Depth 142 mm
Mounting Hole Ø 292 mm
Weight 3.5 kg
SKU SX-FX12.D4
MPN SX-FX12.D4
EAN / GTIN 8698814004141

Why choose it?

View product