Description
12 Inch 155mm Double Magnet Subwoofer Driver (Model: S-155)
Deliver thunderous, distortion-free sub-bass performance with the 4D Furnishers S-155 12 Inch Subwoofer Driver (400W RMS / 2000W Peak). Precision-engineered for dual-use versatility, the S-155 bridges the gap between high-SPL automotive car audio systems and articulate home theater low-end setups.
Built around a massive 155mm double-stacked ferrite ring magnet motor, high-temperature voice coil, and non-resonant stamped steel basket, the S-155 maintains linear cone excursion across deep low frequencies from 10 Hz to 200 Hz.
Key Acoustic Features & Driver Engineering
Heavy-Duty 155mm Double Magnet Motor Assembly
The backbone of the S-155’s transient accuracy is its dual-stacked 155mm ferrite ring magnet assembly. By creating a dense magnetic flux field in the voice coil gap, this high-power motor structure gives the amplifier total control over driver displacement, preventing muddy bass decay and acoustic lag during heavy dynamic drops.
High-Roll Rubber Surround with High-Tensile Green Stitching
To sustain long-stroke excursion without surround decoupling, the woofer uses a durable, anti-aging rubber surround bonded and perimeter-stitched to the cone matrix using high-tensile green threading. This structural reinforcement eliminates flex under extreme internal box pressure.
Hybrid Dual-Application Architecture (Car Audio & Home Theater)
The S-155 features balanced electromechanical parameters (Thiele/Small) that allow it to adapt effortlessly to both automotive trunk environments and home living space acoustics. Whether mounted in a compact car box or a home theater cabinet, it delivers tight, punchy, and linear low-end response.
Enclosure Guidelines & Recommended Tuning
The S-155 12 Inch 155mm Double Magnet Subwoofer Driver performs reliably in various custom box designs:
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Sealed Enclosures (Tight & Accurate Acoustic Bass): Recommended for audiophile music listening where fast transients and flat, balanced bass response are essential.
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Ported / Vented Enclosures (Maximum SPL & Cinematic Depth): Recommended for high-output car audio builds and deep home theater movie bass extension.
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Amplification Matching: Pair the S-155 with a mono-block mplifier or bridged stereo amplifier supplying 250W to 400W RMS at 4 Ohms.
S-155 Technical Specifications
| Feature | Specification |
| Model / SKU | S-155 |
| Driver Size | 12 Inch (300 mm) |
| Magnet Engine | 155mm Double-Stacked Ferrite Magnets |
| Power Handling | 400 Watts RMS / 2000 Watts Peak |
| Nominal Impedance | 4 Ohms |
| Frequency Response | 10 Hz – 200 Hz |
| Surround Material | High-Roll Rubber with Colored Accent Stitching |
| Application | Automotive Car Audio & Home Theater Systems |
| Basket Construction | Stamped Steel Anti-Resonant Frame |
| Warranty | 1-Year Official 4D Furnishers Warranty |
Frequently Asked Questions (FAQ)
Q1: What makes a 155mm double magnet subwoofer driver better than a 135mm driver?
A: The larger 155mm double magnet assembly generates stronger magnetic flux density in the motor gap. This provides tighter cone damping, higher power handling, faster transient control, and cleaner bass at high volume levels compared to a 135mm magnet driver.
Q2: Can I use the S-155 subwoofer driver for a home theater DIY build?
A: Yes. The S-155 is acoustically tuned for dual-purpose operation. It handles home theater plate amplifier power effortlessly and produces clean low-frequency extension in residential rooms.
Q3: What size amplifier works best for the S-155 12 inch subwoofer driver?
A: We recommend an amplifier capable of outputting between 250W and 400W RMS at 4 Ohms for maximum headroom and mechanical control.
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