Description
CSW-400 12 Inch Car Subwoofer with Stainless Steel Grill
Deliver articulate, chest-thumping sub-bass into your vehicle with the 4D Furnishers CSW-400 12 Inch Car Subwoofer (300W RMS / 1200W Peak). Designed for audiophile car audio builds, the CSW-400 combines heavy-duty driver motor architecture with an acoustically tuned 18mm MDF sealed enclosure to achieve punchy, tight low frequencies without boomy distortion or artificial frequency spikes.
Key Acoustic Features & Driver Engineering
Heavy-Duty 18mm MDF Sealed Enclosure with Black Carpet
To eliminate energy loss from cabinet wall flex, the CSW-400 12 Inch Car Subwoofer with Stainless Steel Grill is housed in a dense, precision-built 18mm Medium-Density Fiberboard (MDF) cabinet wrapped in black carpet. The non-resonant 18mm MDF structure acts as an inert sound baffle, dampening internal reflections and focusing all driver displacement into the vehicle cabin.
Balanced Linear Acoustic Tuning (No Frequency Peaking)
Unlike vented or ported boxes that create an aggressive “one-note” boost around port resonance, the CSW-400 sealed enclosure provides an acoustically linear frequency curve. By controlling back-wave air suspension inside the sealed chamber, the subwoofer maintains accurate acoustic balance across all bass tracks from 10 Hz to 200 Hz.
Heavy-Duty Stainless Steel Protective Bar Grill
Designed for practical trunk integration, the CSW-400 features a custom stainless steel protective bar grill secured with heavy-duty mounting brackets. These steel bars shield the woofer cone and rubber surround from shifting luggage, tools, or spare tires without causing airflow restriction or cabinet rattle.
155mm Double Magnet Motor Assembly
The motor structure of the CSW-400 utilizes massive 155mm double-stacked ferrite ring magnets to establish an exceptionally dense magnetic flux gap. This provides rapid voice coil recovery during high-excursion bass hits, preventing power compression during high-volume playback.
CSW-400 Technical Specifications
| Feature | Specification |
| Model Number | CSW-400 |
| Subwoofer Size | 12 Inch (300 mm) |
| Power Handling | 400 Watts RMS / 2000 Watts Peak |
| Enclosure Construction | Heavy-Duty 18mm MDF Sealed Cabinet |
| Cabinet Outer Finish | Wear-Resistant Black Carpet |
| Protection Shield | Stainless Steel Protective Bar Grill |
| Magnet Engine | 155mm Double-Stacked Ferrite Ring Magnets |
| Nominal Impedance | 4 Ohms |
| Frequency Response | 10 Hz – 200 Hz |
| Surround Type | High-Roll Rubber Surround with Green Stitching |
| Acoustic Profile | Linear Response (No Frequency Peaking) |
| Warranty | 1-Year Official 4D Furnishers Warranty |
Amplification & System Matching Guidelines
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Amplifier Requirement: Pair the CSW-400 with a mono-block amplifier or a bridged 2-channel amplifier delivering 250W to 400W RMS at 4 Ohms.
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Crossover Settings: Set the Low-Pass Filter (LPF) on your amplifier between 60 Hz and 80 Hz for seamless integration with your car’s front soundstage.
Frequently Asked Questions (FAQ)
Q1: What makes the CSW-400 12 Inch Car Subwoofer sealed box design better for accuracy?
A: The CSW-400 uses an 18mm MDF sealed box that provides continuous internal air damping. This prevents speaker cone overshoot and keeps all low frequencies balanced naturally without creating artificial bass peaks.
Q2: Does the stainless steel grill on the CSW-400 rattle during heavy bass?
A: No. The stainless steel bar grill is rigidly anchored to the cabinet frame with heavy-duty brackets, providing maximum protection against boot space cargo without rattling or restricting air displacement.
Q3: What amplifier power works best with the CSW-400?
A: We recommend an amplifier that delivers between 250W and 400W RMS at 4 Ohms for maximum control and dynamic range.
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