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More Power, More Bass!
Designed to provide thumping power that shakes everyone’s mirrors, the ZXI15.4D is a newly designed subwoofer that could only be defined as a monster of a machine. It packs a 3-inch voice coil that’s made to withstand high amounts of power with unparalleled efficiency, while producing thunderous bass that’s free from distortion. Don’t get it twisted, this sub is versatile enough to play higher frequencies under 900Hz down to 15Hz with incredible clarity and accuracy!
Order the DS18 ZXI15.4D today to turn up the bass with thunderous power!
Powerful Bass!
The majority of subs that produce this much bass usually have enormous power requirements to get to maximum XMAX and deliver crazy loud bass. The ZXI15.4D sets itself apart since it has an extremely efficient coil that handles large power with a higher dB rating than most subs at 89 dB. This sub is also conservatively rated at 1000W RMS Power Handling and 2000W MAX Power Handling, making it capable of handling anything you throw at it!
Product Highlights





| Nominal Diameter | 15" / 381mm |
| Nominal Impedance | 4 + 4 ohms |
| RMS Power Handling | 1000w |
| MAX Power Handling | 2000w |
| Sensitivity (1w/1m) | 89dB |
| Frequency Response | 15Hz-900Hz |
| Recommended Lo Pass Crossover | 90Hz |
| MOTOR | |
| Voice Coil Diameter | 3" / 76.2mm |
| Voice Coil Former Material | Black Aluminum |
| Winding Material | CCAW |
| Cone Material | Non-Pressed Paper |
| Dust Cap Material | PPI |
| Surround Material | Foam |
| Basket Material | Aluminum |
| Basket Color/Finish | Sandblasted Black |
| Magnet Material | Ferrite |
| Magnet Weight | 232 Oz (4 x 58 oz) |
| Displacement Volume | 5.82L / 0.2 ft3 |
| MEASUREMENT | |
| Overall Diameter | 15.65" / 397.5mm |
| Overall Depth | 10.51" / 267mm |
| Front Mount Baffle Cutout | 13.96" / 354.7mm |
| Mounting Depth | 8.72" / 221.5mm |
| Motor Diameter | 7.48" / 190mm |

| SKU | ZXI15.4D |
|---|---|
| Nominal Diameter | 15" / 381mm |
| Nominal Impedance | 4 + 4 ohms |
| RMS Power Handling | 1000W |
| Maximum Power Handling | 2000W |
| Sensitivity (1w/1m) | 89dB |
| Frequency Response | 15-900Hz |
| Recommended Lo Pass Crossover | 90Hz |
| Voice Coil Diameter | 3" / 76.2mm |
| Voice Coil Former Material | Black Aluminum |
| Winding Material | CCAW |
| Cone Material | Non-Pressed Paper |
| Dust Cap Material | PPI |
| Surround Material | Foam |
| Basket Material | Aluminum |
| Basket Color/Finish | Black Sandblasted |
| Magnet Material | Ferrite |
| Magnet Weight | 232 Oz (4 x 58 oz) |
| Displacement Volume | 5.82L / 0.2ft3 |
| Equivalent Volume Vas | 77.82L / 2.748ft3 |
| Free Air Resonance Fs | 28Hz |
| Mechanical Factor Qms | 7.641 |
| Electrical Factor Qes | 0.632 |
| Total Factor Qts | 0.516 |
| Moving Mass Mms | 351.991g |
| Compliance Cms | 0.085mm/N |
| Bl Factor Bl | 27.244 |
| Voice Coil Inductance Le | 63.14 mH |
| Diaphragm Area Sd | 804.25cm2 |
| DC Resistance Re | 3.6+3.6 ohms |
| Efficiency Bandwidth Product EBP | 44.3 |
| Sealed Internal Volume | 56.6L / 2ft3 |
| Sealed Box Output Response F3 | 32Hz |
| Ported Internal Volume | 79.3L / 2.8ft3 |
| Port Size *Square (W x H x Long) | 1.6" x 15" x 23.46" / 40.6 x 381 x 595.9mm |
| Port Tuning Frequency FB | 28Hz |
| Ported Box Output Response F3 | 25Hz |
| Overall Diameter | 15.65" / 397.5mm |
| Overall Depth | 10.51" / 267mm |
| Front Mount Baffle Cutout | 13.96" / 354.7mm |
| Mounting Depth | 8.72" / 221.5mm |
| Motor Diameter | 7.48" / 190mm |
| Gross Single Unit Weight | 39 |
| Dimensions W x L x H | 17.5 x 17.5 x 13 |
| Quantity of Units in Master Carton | 1 |
| Gross Master Carton Weight | 39 |
| Master Carton Dimensions W x L x H | 17.5 x 17.5 x 13 |
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.




















