PS Shallow-Mount Water-Resistant 8" Subwoofer | 400W RMS DVC 4-Ohm
Product Overview DS18 PSW8.4D8” Dual Voice Coil Shallow-Mount Subwoofer – 400W RMS / 800W MAX The PSW8.4D...
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Product Overview
DS18 PSW8.4D
8” Dual Voice Coil Shallow-Mount Subwoofer – 400W RMS / 800W MAX
The PSW8.4D is a shallow-mount 8” subwoofer engineered to deliver serious low-end punch in minimal space.
Tight Spots and Deep Drops
With a mounting depth of just 3.5 inches and a total depth of 4”, the PSW8.4D fits clean into under-seat boxes, truck enclosures, and other compact builds but reaches frequencies as low as 20Hz
Dual 4-Ohm Voice Coils for Flexible Wiring
Wired in series or parallel, the dual 4-ohm voice coils give you options for system matching and amp tuning. That means more control over your setup and more reliable performance under pressure.
Hit Hard and Stay Cool
A 2" aluminum voice coil and water-resistant paper + aluminum cone allow for better heat dissipation and long-lasting performance. The ferrite motor and high-roll rubber surround deliver strength and stability for extended play at high volume.
Tuned for Accuracy
With a sensitivity of 81dB and an optimal sealed box volume of 0.35–1.3 ft³, the PSW8.4D balances deep bass with tonal precision.
Bring the boom to any mounting space with DS18’s PSW8.4D!
Key Features
- Shallow-mount 8” subwoofer designed for tight installations
- Dual 4-ohm voice coils for flexible system wiring
- 400W RMS / 800W MAX power output
- Water-resistant paper cone with aluminum reinforcement
- 3.5” mounting depth ideal for compact enclosures
Specifications
| Nominal Diameter | 8" / 203mm |
|---|---|
| Nominal Impedance | 4 + 4 Ohms |
| RMS Power Handling | 400W |
| MAX Power Handling | 800W |
| Sensitivity (1W/1M) | 81 dB |
| Frequency Response | 20-300 Hz |
| Recommended Low-Pass Crossover | 100 Hz |
| Voice Coil Diameter | 2" / 50.8mm |
| Voice Coil Former Material | Aluminum |
| Winding Material | Copper |
| Cone Material | Water-resistant paper with aluminum reinforcement |
| Surround Material | Rubber |
| Magnet Material | Ferrite |
| Magnet Weight | 38 oz |
| Displacement Volume | 0.5 L / 0.017 ft3 |
| Basket Material | Steel |
| Basket Finish | Matte Black |
| Equivalent Volume (Vas) | 9.38 L / 0.33 ft3 |
| Excursion (Xmax, one way) | 8.5 mm |
| Free Air Resonance (Fs) | 42 Hz |
| Mechanical Factor (Qms) | 4.08 |
| Electrical Factor (Qes) | 1.06 |
| Total Factor (Qts) | 0.84 |
| Moving Mass (Mms) | 98.43 g |
| Compliance (Cms) | 141.08 mm/N |
| BL Factor | 12.61 |
| Voice Coil Inductance (Le) | 1.83 mH |
| Diaphragm Area (Sd) | 216 cm2 |
| DC Resistance (Re) | 3.2 + 3.2 Ohms |
| Efficiency Bandwidth Product (EBP) | 39.6 |
| Sealed Internal Volume Range | 10L to 37L / 0.35ft3 to 1.3 ft3 |
| Sealed Box Output Response (F3) | 43-38 Hz |
| Overall Diameter | 8.6" / 220mm |
| Overall Depth | 4" / 102mm |
| Front Mount Baffle Cutout | 7.5" / 191mm |
| Mounting Depth | 3.5" / 90mm |
| Motor Diameter | 5.27" / 134mm |
Manuals & Documents
Shipping
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
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.
Important Notes
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.