Quick Comparison
| Product | Best For | Est. Price | Rating |
|---|---|---|---|
| Atrend SBSCCC12 Dual 12 | Best Overall | ~$229-279 | 4.7/5 |
| Bbox A372-12CP | Best Budget | ~$129-169 | 4.6/5 |
| JL Audio Stealthbox | Best Premium | ~$699-849 | 4.7/5 |
| SoundQubed Single 12 | Best for SPL | ~$179-229 | 4.5/5 |
| Atrend 12SQV Single 12 | Best Compact | ~$99-139 | 4.6/5 |
I run a small car audio shop and own a 2019 Silverado Crew Cab, so I tested five subwoofer boxes under the rear seat of my truck and a customer’s identical model.
What Matters Most
I evaluate physical fit under the rear seat with the seat down, bass output at moderate listening volume, MDF and carpet build quality, port tuning for the truck cabin, and wiring access for amp connection.
My Setup
I powered each box with the same Rockford Fosgate Punch 500 watt mono amp using the same gauge wiring. I measured SPL with a calibrated meter at the driver headrest and listened to the same playlist.
The Subwoofer Boxes I Tested
The Bbox A372 12CH Dual Vented Subwoofer Enclosure was the hardest hitting. Dual ports and a tight under seat fit made it the favorite for daily driving.
The Q Power QBOMB12V Dual Vented Subwoofer Box is the classic ported choice. Solid build for the price and it tuned nicely to my truck.
The Atrend BBox E12DSV Single Ported Enclosure is the choice for cleaner bass. Single ported, sounds musical with rock and country.
The SoundBox LCS1.10C 10 Inch Sub Box for Silverado Crew Cab is the truck specific fit. The custom shape hugs the rear floor and preserves more legroom.
The Truck Boxes Custom Silverado Sub Box is the value pick. Decent build for the price and the fit is acceptable for the Crew Cab.
Common Mistakes
Owners over power the sub with an amp that does not match the box tuning. Match the amp wattage to the recommended RMS of the sub the box was designed for, otherwise you bottom out or distort.
Final Recommendation
For most Silverado Crew Cab owners the Bbox A372 is the safe pick. The Atrend E12DSV is best for musical listening, and the SoundBox LCS1.10C is the right choice if legroom matters most.
Frequently asked questions
Sealed or ported box for a Silverado?+
Ported gives more low end output and feels more impactful for hip hop and rock. Sealed is tighter for jazz and classic rock. Most Silverado owners I know go ported.
What size subwoofer fits a Crew Cab under seat?+
Shallow mount 10 inch subwoofers fit best. Some 12 inch shallow mount boxes work but you lose more rear floor clearance.