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5S-121 | 8000 WATTS SPL SUBWOOFER | Dual 1ohm

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Regular price $1,500.00
Shipping calculated at checkout.


Shipping & delivery

Usually ships in 2–3 business days unless a different lead time is shown on this page. Shipping cost is calculated at checkout (UPS or USPS to the contiguous U.S.).

Shipping policy · Returns · Fitment questions? (561) 207-7988

Delivery and Shipping

Standard order processing is 2–3 business days unless this product or your order confirmation states a different lead time. Custom-built, made-to-order, backorder, and pre-order items follow their stated lead times.

Enclosures and subwoofer boxes ship for $50 per unit. Other shipping charges are calculated at checkout. Orders outside the contiguous 48 United States may require additional shipping; we will contact you for approval before shipment.

Subwoofer boxes ship UPS Ground where available. Read our Shipping Policy and Return and Refund Policy for delivery, product-specific return windows, and warranty details.

Description

Built for One Purpose: WIN

The 5S SPL Series is not a daily sub.
It’s not made for “nice bass.”
It’s built to break numbers, flex doors, and dominate SPL lanes.

Every component in the 5S platform was engineered for extreme pressure, extreme heat, and extreme abuse. From the massive 550 oz motor, to the dual black spiders, to the carbon fiber cone and dust cap, this subwoofer exists for competitors who only care about one thing:

👉 How loud can it get?

If you’re chasing trophies, records, or respect in the lanes — this is the weapon.


What Makes the 5S Series a Monster

✔ 8000 Watts Max / 4000W RMS – built to take real power, not marketing watts
✔ Dual High-Temperature CC Copper Coils – extreme current handling, extreme heat resistance
✔ Carbon Fiber Cone + Dust Cap – rigid, lightweight, zero flex at full tilt
✔ Dual Black Spider Suspension – insane control under brutal excursion
✔ 550 oz High-Mass Magnet – pure motor force for violent SPL output
✔ Cast Iron Cooling Basket – strength + airflow for competition abuse
✔ SPL-Tuned Design – no wasted movement, all pressure

This is the sub you load when you’re not here to play music — you’re here to post numbers.

 TECHNICAL DATA

Specification Details
Series 5S SPL Series
Subwoofer Size 12″
Max Power 8000 Watts
RMS Power 4000 Watts
Voice Coils Dual CC Copper (High Temp)
Impedance Options Dual 1ohm / Dual 2ohms
Suspension Dual Black Spiders
Magnet Weight 550 oz
Cone Material Carbon Fiber
Dust Cap Carbon Fiber
Basket Cast Iron (Cooling Design)
Application SPL / Competition Use

This Is Not for Everyone — And That’s the Point

If you want soft bass, keep scrolling.
If you want flex, pressure, and numbers that shut people up —

The 5S SPL Series belongs in your build.

Inventory on competition subs moves fast.

Fitment & installation

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