BSF-18-4 | 18" Car Subwoofer 1250 Watt Rms DVC 4-Ohms Black Aluminum Basket
BSF-18-4 | 18" Car Subwoofer 1250 Watt Rms DVC 4-Ohms Black Aluminum Basket
The BSF-18-4 subwoofer delivers deep, powerful bass with a 2500W max power and 1250W RMS, providing rich low frequencies for enhanced car audio performance. Its 2.5-inch dual voice coil with 4 Ohm impedance offers flexible wiring options and ensures high-quality sound. Built for durability, it features a strong paper cone with reinforced foam edges and a black aluminum basket that handles intense vibrations while maintaining stability and sound clarity.
Additional features include a 90 dB sensitivity, efficiently converting power into sound output, and chrome push terminals for secure connections. The 136oz Y35 magnet structure ensures powerful sound output, while the 18-inch size and press-fit terminals make installation simple. The subwoofer also offers an improved X-Max of 0.6 inches for deeper bass with minimal distortion during high-power use.
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- Free Shipping
- 90-Day Returns
- 1-Year Warranty
Key Features
Key Features
- 1250 Watts RMS and 2500 Watts MAX
- 18" Subwoofer
- Dual 4-ohm Voice Coils
- Competition Grade Pressed Paper Cone
- Fine Sandblasting Process
- Double-stitched Foam Surround
- Black Heavy Aluminum Basket
- Advanced Air Flow Cooling Design
- Suit For Sealed and Ported Box
- Dynamic Audio Range
- 10"/12"/15"/18” Diameters Options
Specifications
Specifications
- RMS Power: 1250 Watts
- MAX Power: 2500 Watts
- Voice Coil Size: 2.50"
- Magnet Material: Y35 Ferrite
- Magnet Slug Count: Double
- Xmax: 0.6in
- Impedance: Dual 4 Ohm
- Sensitivity: 90 dB
- Frequency: 30 - 800 Hz
- Surround Material: Foam
- Basket Material: Aluminum
- Voice Coil Material: Copper (Pure Copper)
- Voice Coil Former Material: Black Aluminum
- Cone Material: High Strength Pressed Paper
Product Size
Product Size
- Product Dimensions: 18.43" (D) x 18.43" (W) x 10.16"
(H) - Weight: 25 pounds
- Mounting Depth: 8.86"
Amplifier Matching
Amplifier Matching
1 x BSF-18-4 Amplifier Matching
- 1250 Watt RMS @ 2Ω
- 1250 Watt RMS @ 8Ω
2 x BSF-18-4 Amplifier Matching
- 2500 Watt RMS @ 1Ω
- 2500 Watt RMS @ 4Ω
What's In The Box?
What's In The Box?
- 1 x Car Subwoofer (BSF-18-4)
- 1 x 15mm*1m Sealing Strip
- 1 x User Manual

I made an 8 cubic foot ported box as recommended in the manual.I tuned the box unusually low at 28HZ for use with movies and music, and this thing does not disappoint.. I'm able to play infrasonic frequencies down to 13 Hz no problem. It may be able to play lower than 13, but I'm giving it time to break in.
Ive been using the BSF-18-4 in my car for a few weeks now, and its everything I expected and more. The subwoofer delivers a clean, tight bass with plenty of punch, perfect for enhancing my cars sound system.