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(2) Sundown Audio X8 v3 & Chevy Crew Cab 14-18 Dual 8" Subwoofer Box Combo
$999.99
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(2) Sundown Audio X8 v3 & 2014–2018 Chevy Silverado / GMC Sierra Crew Cab Dual 8" Ported Subwoofer Box Combo
Meta Title
(2) Sundown Audio X8 v3 & 2014–2018 Silverado Sierra Dual 8" Subwoofer Box Combo | East Car Audio
Meta Description
Complete bass package featuring (2) Sundown Audio X8 v3 subwoofers and a custom ported dual 8-inch enclosure for 2014–2018 Chevy Silverado & GMC Sierra Crew Cab trucks.
The Ultimate Under-Seat Bass Upgrade for Your 2014–2018 GM Truck
If you're looking for competition-grade bass without sacrificing the factory appearance of your truck, the East Car Audio Dual 8" Subwoofer Box Combo is the perfect solution.
This package includes two Sundown Audio X8 v4 subwoofers paired with a custom-built Rhino-lined ported enclosure engineered specifically for 2014–2018 Chevrolet Silverado and GMC Sierra Crew Cab trucks. Designed to fit neatly beneath the rear seat, this system delivers incredible low-frequency output while preserving passenger space and maintaining a clean OEM-style installation.
What's Included
- (2) Sundown Audio X-8 v3 8" Subwoofers
- (1) Custom Rhino-Lined Dual 8" Ported Subwoofer Enclosure
- Installed Heavy-Duty Speaker Terminal
- Choice of Dual 2 Ohm or Dual 4 Ohm Subwoofers
Why You'll Love This Combo
✅ Complete bass package
✅ Custom-built for 2014–2018 Silverado & Sierra Crew Cab
✅ Premium Rhino bed liner finish
✅ Front-firing ported enclosure
✅ Competition-level Sundown Audio X-Series subwoofers
✅ Excellent sound quality and deep bass extension
✅ Designed for high-power amplifiers
✅ Handmade and professionally assembled
Sundown Audio X8 v4 Features
The legendary Sundown Audio X-Series v4 is one of the highest-performing standard 8-inch subwoofers available.
Features include:
- 1,000 Watts RMS per subwoofer
- 2,000 Watts Peak Power
- Triple-Stacked High-Energy Motor
- 2.5" High-Temperature Voice Coil
- Dual 2Ω or Dual 4Ω Voice Coil Options
- Aluminum Shorting Ring
- FEA Optimized Suspension
- Mega-Roll Surround
- Long Linear Excursion
- Competition-Level Performance
Total System Power
| Specification | Details |
|---|---|
| Subwoofers Included | (2) Sundown Audio X8 v4 |
| RMS Power | 2,000 Watts RMS Combined |
| Peak Power | 4,000 Watts Combined |
| Voice Coil Options | Dual 2Ω or Dual 4Ω |
| Recommended Amplifier | 2,000–3,000W RMS Monoblock |
Enclosure Specifications
| Specification | Details |
|---|---|
| Vehicle Fitment | 2014–2018 Chevy Silverado & GMC Sierra Crew Cab |
| Enclosure Type | Ported |
| Orientation | Front-Firing |
| Finish | Rhino Bed Liner |
| Width | 49" |
| Height | 9.5" |
| Bottom Depth | 14" |
| Mounting Depth | 7.5" |
| Cutout Diameter | 7.32" |
| Air Space | 0.97 ft³ Per Chamber |
| Tuning Frequency | 35 Hz |
Vehicle Fitment
Chevrolet
- Silverado 1500 Crew Cab (2014–2018)
GMC
- Sierra 1500 Crew Cab (2014–2018)
Crew Cab models only.
Built for Serious Bass
The custom enclosure is tuned to 35 Hz, allowing the Sundown X8 v4 subwoofers to produce deep, musical bass while maintaining excellent output and low distortion.
The Rhino-lined finish provides superior durability compared to carpet, making it perfect for work trucks, daily drivers, and show vehicles alike.
Which Voice Coil Should I Choose?
Choose Dual 2 Ohm if:
- You want a 2-ohm final load with a single amplifier.
Choose Dual 4 Ohm if:
- You want a 1-ohm final load with a single amplifier.
This gives you flexibility to match your amplifier while maximizing power delivery.
Perfect For
- Daily Driver Bass Builds
- SQL Systems
- SPL Systems
- Truck Audio Enthusiasts
- Show Trucks
- Custom Audio Installations
Frequently Asked Questions
How much power can this combo handle?
The two Sundown X8 v4 subwoofers provide a combined 2,500 Watts RMS power handling.
Will this fit under my rear seat?
Yes. The enclosure is custom-built for 2014–2018 Chevy Silverado and GMC Sierra Crew Cab trucks.
Is the enclosure carpeted?
No. It features a rugged Rhino bed liner finish for added durability and a premium custom appearance.
Is this a ported enclosure?
Yes. The enclosure is professionally tuned to 35 Hz for deep, accurate bass response.
Do I need an amplifier?
Yes. For best performance, we recommend a quality monoblock amplifier capable of delivering 2,000–3,000 Watts RMS.
Why Buy from East Car Audio?
At East Car Audio, we specialize in truck-specific audio systems designed for enthusiasts who demand serious performance. Every enclosure is engineered for proper fitment, maximum output, and long-lasting durability.
When you buy from East Car Audio, you're getting:
- Premium Sundown Audio products
- Vehicle-specific custom enclosures
- Fast shipping
- Expert customer support
- Products designed by truck audio enthusiasts
