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๐ถ Unleash the bass beast under your seat โ because your truck deserves to sound as bold as you do!
The Q Power Quad 8in Underseat Front Fire Subwoofer Enclosure is a custom-fit, ported sub box designed specifically for 2007-2026 Chevy Silverado and GMC Sierra Crew Cab trucks. Featuring four 8-inch subwoofer openings, a rugged bed liner exterior for durability, and an underseat down-fire design, it delivers powerful, clear bass tuned at 35 Hz. This enclosure maximizes audio performance while maintaining a sleek, space-saving profile, making it the ultimate upgrade for truck owners craving immersive sound.






| ASIN | B08SF2FW97 |
| Additional Features | Underseat Down Fire, Rugged Bed Liner |
| Audio Driver Size | 8 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Front |
| Best Sellers Rank | #18,724 in Electronics ( See Top 100 in Electronics ) #15 in Car Subwoofer Boxes & Enclosures |
| Brand | Q Power |
| Built-In Media | 4 x Subwoofer |
| Compatible Devices | Gaming Console, Laptop, MP3 Player, Smartphone, Tablet |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | USB |
| Connectivity Technology | USB |
| Control Method | Touch |
| Customer Package Type | FFP |
| Customer Reviews | 4.4 out of 5 stars 263 Reviews |
| Enclosure Material | Bed Liner Material |
| Frequency Response | 35 Hz |
| Is Waterproof | FALSE |
| MP3 player | No |
| Manufacturer | QPower |
| Model Name | QBGMC07408 |
| Model Number | QBGMC07408 |
| Mounting Type | underseat |
| Number of Audio Channels | 4.0 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Processor Count | 4 |
| Speaker Maximum Output Power | 400 Watts |
| Speaker Size | 8 Inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Car Audio Systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 8 Inches |
| Total Ethernet Ports | 4 |
| UPC | 813177027141 |
| Warranty Type | Lifetime |
| Woofer Diameter | 8 Inches |
M**A
Good stuff
Fit perfectly in my 2024 silverado lt. Throw in some ds18 or skar subs in it and the sound quality will blow you away. Pretty affordable. Great material used in building these enclosures.
M**L
Read whole review
Sundown x8 v3 don't fit with out shaving box and removing rubbers on magnets. Ports also to small for these subs fuffs really bad on deep bass sounds. Overall box is definitely strong, looks great. Definitely recommend for smaller subs. Figured the port was to small for subs took a chance anyways. Fits great in 2019 chevy silverado crew
D**D
Fits the truck perfectly
Great fit. Box fits 8s and the truck excellent. No need for seat lifters. Stick out just a tad in front . But not enough to be troublesome ๐
P**R
Great for big bass.
The box is great for hard hitting bass. It will not play higher frequency bass notes very well so you will need to have some good mid and high range speakers to complement the overall sound quality. I only gave it a 4 stars because it dose have some cosmetic dings from the manufacturer and you will need to predrill holes before mounting the subs. I had a couple of my screws strip the whole when mounting the sub. Overall I am very satisfied with the sound quality of this box. I have it installed in my 2022 Silverado crew cab with 2 CT 8" Meso subs (800watts RMS each sub) and a 3000 watts hifonics amp and I can't believe how hard this setup hits.
J**L
Pretty good
Sounds good! Using this with 2 CT Sounds Meso 8โs feed by a 2000.1 amp. Fits nicely under the bench of my 2014 GMC Sierra crew cab.
A**R
Quad 8
Have it in my 08 2500 hd sierra extended cab. Seat would need to be raised if you need to continue to use it.
W**S
Seller Fixes Issue
Box does not fit under back seat of 2013 GMC Sierra 2500 crew cab like listing says, back seat does not go down all the way. The cut out for hump is not in correct location. Contacted seller so we will see how they handle the inconvenience of ordering wrong box due to incorrect item fitment.
B**R
2012 Chevy Silverado
No other box would make my Chevy Silverado pound like this one.It's absolutely everything that I wanted
J**.
Construction!
First and foremost it looks nice. That said and considering the price you get what you pay for everything about the construction of this box is off. The mdf is too thin for 4 8" subs and the port isn't correct for this size of air volume, other than that the box fits nicely in my 2015 chevy highcountry. But you might want to consider upgrading if your on a budget. I only bought this because it looked cool lol but your best bet is side port and two 8" subwoofers. For testing I put them in my jeep wrangler rubicon and they do pound hard but just use some gasket or silicone around the subs. Good luck with yours!
E**Y
Good quality, solid box
Very well built, fits perfect, finish is consistent, I have 2 skar zvx-8โs and it hits very, very low.
Trustpilot
4 days ago
2 months ago