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Q Power

Q Power Easy to Install Durable 8 Inches by 11.25 Inches Dual Port Empty Subwoofer Enclosure Box with Underseat Down Fire and Loud Bass

  • Based on 105 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
Fulfilled by KART IT
Arrives Aug 7 – Aug 11
Order within 3 hours and 27 minutes
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Features

  • Equipped with 2-hole 8-inch openings allow for an ideal fit for 2 subwoofers, design is made to fit dual 8-inch subwoofer boxes for guaranteed clear sound
  • Car subwoofer boxes and enclosures provide the ideal spot for extremely loud bass playing with the underseat down fire capabilities featuring a louder and crisper sound
  • Bed liner material provides durability, protection, and extra resistance to wear and tear for long use in the car as a dual subwoofer enclosure
  • Enclosure's design makes for an ideal spot for loud bass playing; Equipped with a tuning frequency of 53 hertz, offering a competitive quality against a bigger dual 12-inch subwoofer
  • Equipped with a mounting depth of 11 1/4";QPower values cars with premium music; Measures 8 inches with a mounting depth of 11.25 inches; Color black design

Brand: Q Power


Connectivity Technology: wired


Audio Output Mode: Stereo


Mounting Type: Underseat Mount


Speaker Type: Subwoofer


Compatible Devices: Vehicle Audio System


Subwoofer Diameter: 8 Inches


Unit Count: 1 Count


Surround Sound Channel Configuration: 2.0


Product Dimensions: 14"D x 54.5"W x 10.5"H


Is Waterproof: FALSE


Control Method: Touch


Speaker Size: 8 Inches


Power Source: Corded Electric


Woofer Diameter: 8 Inches


Vehicle Service Type: Ford F150 Super Crew (2009 to current), Ford F250 and 350 Super Duty (2017 to current)


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8 Inches


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: wired


Includes MP3 player?: No


Processor Count: 1


Manufacturer: QPower


Item model number: 197894


Date First Available: July 21, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 7 – Aug 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Nice amount of added bass
Review Image by Jeffrey Monahan Jeffrey Monahan
Review Image by Jeffrey Monahan Jeffrey Monahan
Fits the little skar 8s just fine. Will not fit a ddaudio 2508 however. Hole is to small and the magnet is to big without adding a spacer on the box. Over box is solid and very happy with the sound and bass output. No port noise and will get decently low. Fits perfectly under the supercrew f150 2019! ... show more
Reviewed in the United States on March 27, 2021 by Jeffrey Monahan Jeffrey Monahan
    • Sounds awesome
2 8" sundown subs with this box in my 21 f150 sounds perfect. Box came in without a scratch. I have seen reviews of damaged boxes but that's on the shipper. Also the coating on this thing is great. Should last a lifetime.
Reviewed in the United States on January 29, 2023 by John White
    • Best boom for your buck
Box came exactly as described, fit the two biggest 8’s I could get my hands on and still had room to spare. Sound quality is incredible in my 2011 f150 super crew.
Reviewed in the United States on September 16, 2021 by Andrew
    • Ported
Shipping was fast arrived with no bumps or bruises but it is ported but only one side is
Reviewed in the United States on April 4, 2025 by Tstunna
    • Solid build
Review Image by Alvin Carstensen Alvin Carstensen
Review Image by Alvin Carstensen Alvin Carstensen
Dimensions 49.5" wide x 12 5/8" deep. 9" front height, 6" back height. Gives about 2.3 ft³ total. With port displacement closer to a little over 2. Front baffle is ¾ mdf. The rest looks like ⅝. Solid build. Speaker terminals are behind each sub on top of the box. The tuning states 35 hz and man this thing booms. I had 2 skar vd10s in a down fire ported box before, and this box with 2 evl8 subs sound better. Shakes the whole truck. The only con, in my opinion is the small gap in front under the seat. I would also like to see a lower tune like 32hz. Don't get me wrong, with the right subs, this thing booms! But it starts to roll off in the lower 30 hz range. Still a great pre fab box! ... show more
Reviewed in the United States on January 29, 2021 by Alvin Carstensen Alvin Carstensen
    • Very impressed for JL 8W3’s
I purchased a JL Audio CP208LG-W3v3 and wasn’t happy with the lack of low frequencies it put out. I put the 2 JL 8W3’s (with a JD500/1 amp) under the seat of my 2022 F250 and it is a clean monster now. I previously had 2-JL 12w3’s in a JL Stealthbox in an F150. This is very comparable but not capable of the volume level of the 2-12’s. I’m very very happy with this box and setup. The JL Audio CP208LG-W3v3 was very punchy and wouldn’t play all genres at all in comparison to this box. Well worth getting rid of the storage under the seat to me. ... show more
Reviewed in the United States on October 15, 2024 by Ben Falen
    • Tuned to 44Hz NOT 35Hz
First of all the packaging for this thing sucks. I ordered 3 different times from different sellers and they all arrived damaged. They are shipped in a single cardboard box with no packaging inside whatsoever. The box is also too long by about 6-8" so the enclosure slides around inside the box during shipping resulting in 2 of the 3 boxes busting out of the box during transit. Worst of all, I finally measured the enclosure and port to verify the air volume and tuning was correct.... it is not. The air volume is 1.6cuft but the port is tuned to 44Hz. The port measures 10"x1.8125" and is 12" long. For a 35Hz tune the port would need to be 21.3" long. Extending the port inside the enclosure would reduce the air volume, requiring an even longer port. The port would then block the cutout holes for the subs so its not really possibly. Qpower either has no idea what they are doing or are blatantly lying to their customers. ... show more
Reviewed in the United States on May 18, 2023 by User
    • Updated review
Update. I had box reevaluated. Front baffle didn't separate. I was lied to to try to get me to purchase a box. Apologies to seller. Issue was subs didn't sit flush due to the textured lining on the box. Fixed with rope caulk and the sound is amazing for two Skar SDR 8's. Wanted to update my findings and change my review. Box is well worth the money ... show more
Reviewed in the United States on February 20, 2021 by jimmie brewster

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