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The 3100 series 15 employs a finely-tuned balance of damping and extensive motor force to achieve very high efficiency, offering exceptional versatility and unmatched performance in a variety of real-world functions:
Paired with a traditional (4th order) bass-reflex enclosure, the subwoofer's output can be focused along a narrow bandwidth for use in extreme loudness / SPL applications. In a 6th order bass-reflex, the output can be spread along a wider frequency range, shifting emphasis onto sound quality with articulate delivery and highly controlled excursion.
Fs 26.920 Hz Qms 3.930 Vas 97.350 l Cms 0.100 mm/N Mms 319.110 g Rms 13.850 kg/s Dia 318.210 mm Sd 795.270 cm² Qes 0.320 Re 7.070 ohm Le 2.810 mH Z 8.490 ohm Bl 34.510 Tm Bl²/Re 168.350 N²/W Qts 0.290 no 0.570 % SPL 89.710 dB EBP 84 Nominal Diameter 15in Overall Diameter 15.25in / 387.4mm Mounting Hole Diameter 14.14in / 359.4mm Bolt Hole Circle DiameterMotor Outer DiameterMounting Depth 8.01in / 203.6mm Required Pole Vent ClearanceDriver Displacement 0.19 cu ft / 5.42l Minimum Sealed Volume N/A Minimum Vented Volume 2.96 cu ft / 84l net* * Tune for desired response

The above designs have been engineered for a "two tier" balance of compatibility: First, between the cabin acoustics of a sedan, hatchback and an SUV, and second, between the two available voice coil configurations, for a total of six balance points. This ensures a linear response and optimal power handling for listening purposes under most circumstances. Please visit our Enclosure Design Service page for custom designs.
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.




