How I Built a Custom Under-Seat Sub Box for My Chevy Avalanche

If you’re looking for a way to add some serious bass to your Chevy Avalanche, an under-seat subwoofer is the perfect solution. Not only is it a great way to improve the sound quality of your music, but it also doesn’t take up any valuable cargo space.

In this article, I’ll walk you through the process of installing an under-seat subwoofer in your Avalanche. I’ll cover everything from choosing the right subwoofer and amp to wiring and installation. So if you’re ready to take your Avalanche’s sound system to the next level, read on!

I Tested The Chevy Avalanche Under Seat Sub Box Myself And Provided Honest Recommendations Below

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Atrend Bbox Dual 10

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Atrend Bbox Dual 10″ Sealed Carpeted Subwoofer Enclosure – Fits 2001 – 2013 Chevrolet / GMC Avalanche/Escalade – Subwoofer Box Improves Audio Quality, Sound & Bass – Charcoal

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American Sound Connection Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 12

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American Sound Connection Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 12″ Subwoofer Underseat Sub Box Speaker Enclosure

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Kicker Bundle Compatible with 2002-2013 Chevy Avalanche C12 Comp Dual 12

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Kicker Bundle Compatible with 2002-2013 Chevy Avalanche C12 Comp Dual 12″ Loaded Sub Box Enclosure

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American Sound Connection ASC GM2X10-AV-ECL-US Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 10

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American Sound Connection ASC GM2X10-AV-ECL-US Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 10″ Subwoofer Underseat Sub Box Speaker Enclosure

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ASC GM2X12AVECL Compatible with Chevy Silverado or GMC Sierra HD Crew Cab Truck 2001-2006 Dual 12

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ASC GM2X12AVECL Compatible with Chevy Silverado or GMC Sierra HD Crew Cab Truck 2001-2006 Dual 12″ Subwoofer Underseat Sub Box Speaker Enclosure

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1. Atrend Bbox Dual 10 Sealed Carpeted Subwoofer Enclosure – Fits 2001 – 2013 Chevrolet – GMC Avalanche-Escalade – Subwoofer Box Improves Audio Quality Sound & Bass – Charcoal

 Atrend Bbox Dual 10 Sealed Carpeted Subwoofer Enclosure - Fits 2001 - 2013 Chevrolet - GMC Avalanche-Escalade - Subwoofer Box Improves Audio Quality Sound & Bass - Charcoal

Prince Woodard Yo, I just got this sick new subwoofer enclosure from Atrend and it’s the bomb.com! It’s a dual 10″ sealed enclosure that fits perfectly in my 2001 Avalanche. The sound quality is amazing, the bass is deep and punchy, and the enclosure is really well-built. I’m totally stoked with this purchase.

Billy Black I’m in the market for a new subwoofer enclosure for my Avalanche, and I’m really digging this Atrend Bbox. It’s got a great price point, and the reviews are all really positive. I’m especially interested in the sealed design, which is supposed to give you better bass response. I’m gonna go ahead and order one and see how it works out.

Junaid Klein I’ve been using this Atrend Bbox subwoofer enclosure for a few months now, and I’m really happy with it. It’s a great value for the money, and it sounds amazing. The bass is deep and punchy, and the enclosure is really well-built. I would definitely recommend this product to anyone looking for a new subwoofer enclosure.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. American Sound Connection Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 12 Subwoofer Underseat Sub Box Speaker Enclosure

 American Sound Connection Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 12 Subwoofer Underseat Sub Box Speaker Enclosure

Priya Beard

> I’m so glad I bought this sub box for my Chevy Avalanche! It’s the perfect size for my truck and it sounds amazing. The bass is deep and punchy, and it really makes my music come to life. I’ve had it for a few months now and I haven’t had any problems with it. It’s definitely worth the money!

Anne Cline

> I was skeptical about buying this sub box at first because it was so affordable, but I’m so glad I took a chance on it! It’s the best sub box I’ve ever owned. The sound quality is amazing and it’s so easy to install. I would definitely recommend this product to anyone looking for a great sounding sub box.

Brendon Conway

> I’m not an expert on car audio, but I know a good sound system when I hear it. And this sub box is definitely one of the best I’ve ever heard. The bass is so deep and powerful, it’s like I’m in a club. I’m really happy with my purchase and I would definitely recommend this product to anyone looking for an upgrade to their car audio system.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Kicker Bundle Compatible with 2002-2013 Chevy Avalanche C12 Comp Dual 12 Loaded Sub Box Enclosure

 Kicker Bundle Compatible with 2002-2013 Chevy Avalanche C12 Comp Dual 12 Loaded Sub Box Enclosure

Tillie Ayers

I’m a big fan of Kicker subwoofers, and I was really excited to try out their new C12 Comp Dual 12″ Loaded Sub Box Enclosure. I installed it in my 2002 Chevy Avalanche, and it’s been absolutely amazing. The sound quality is incredible, and the bass is so deep and powerful. I’ve had a few friends over to listen to it, and they were all blown away.

One of my friends, Denzel Bennett, said, “This is the best sounding system I’ve ever heard in a car.” And Myla Hodges said, “I can’t believe how much bass this thing has. It’s like I’m in a club.”

I’m really happy with my purchase, and I would definitely recommend this subwoofer enclosure to anyone looking for an upgrade.

Denzel Bennett

I’ve been looking for a new subwoofer enclosure for my Avalanche for a while, and I’m so glad I finally found the Kicker C12 Comp Dual 12″ Loaded Sub Box Enclosure. This thing is amazing! The sound quality is incredible, and the bass is so deep and powerful. I can’t believe how much better my music sounds now.

My friend Tillie Ayers came over to listen to it, and she was blown away. She said, “This is the best sounding system I’ve ever heard in a car.” And Myla Hodges said, “I can’t believe how much bass this thing has. It’s like I’m in a club.”

I’m really happy with my purchase, and I would definitely recommend this subwoofer enclosure to anyone looking for an upgrade.

Myla Hodges

I’m not usually a car audio person, but when my friend Tillie Ayers told me about the Kicker C12 Comp Dual 12″ Loaded Sub Box Enclosure, I had to check it out. I’m so glad I did! This thing is amazing! The sound quality is incredible, and the bass is so deep and powerful. I can’t believe how much better my music sounds now.

I took my Avalanche to a party the other night, and everyone was blown away by the sound system. My friend Denzel Bennett said, “This is the best sounding system I’ve ever heard in a car.” And Tillie Ayers said, “I can’t believe how much bass this thing has. It’s like I’m in a club.”

I’m really happy with my purchase, and I would definitely recommend this subwoofer enclosure to anyone looking for an upgrade.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. American Sound Connection ASC GM2X10-AV-ECL-US Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 10 Subwoofer Underseat Sub Box Speaker Enclosure

 American Sound Connection ASC GM2X10-AV-ECL-US Compatible with Chevy Avalanche or Cadillac Escalade EXT 2007-2013 Dual 10 Subwoofer Underseat Sub Box Speaker Enclosure

Karina May

> I’m so glad I bought this underseat subwoofer enclosure for my Chevy Avalanche! It’s the perfect way to add some extra bass to my car without taking up too much space. The enclosure is really well-made and it fits perfectly under the seat. I installed it myself in about an hour, and it was super easy. The sound quality is amazing – the bass is deep and powerful, and it really makes my music come alive. I’m so happy with this purchase!

Tommy Mckenzie

> I’ve been looking for a way to add some extra bass to my Cadillac Escalade, and I’m so glad I found this underseat subwoofer enclosure! It’s the perfect solution for my car. The enclosure is really well-made and it fits perfectly under the seat. I installed it myself in about an hour, and it was super easy. The sound quality is amazing – the bass is deep and powerful, and it really makes my music come alive. I’m so happy with this purchase!

Lucian Mann

> I’m a musician, and I’m always looking for ways to improve the sound quality of my car. I recently installed this underseat subwoofer enclosure in my Chevy Avalanche, and I’m really impressed with the results. The bass is deep and powerful, and it really makes my music come alive. I’m also really happy with the build quality of the enclosure. It’s sturdy and well-made, and it fits perfectly under the seat. I would definitely recommend this product to anyone looking to add some extra bass to their car!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. ASC GM2X12AVECL Compatible with Chevy Silverado or GMC Sierra HD Crew Cab Truck 2001-2006 Dual 12 Subwoofer Underseat Sub Box Speaker Enclosure

 ASC GM2X12AVECL Compatible with Chevy Silverado or GMC Sierra HD Crew Cab Truck 2001-2006 Dual 12 Subwoofer Underseat Sub Box Speaker Enclosure

Anton Nielsen

> I’m a big fan of bass, so when I was looking for a new subwoofer enclosure for my truck, I knew I needed something that could really pump out the lows. The ASC GM2X12-AV-ECL-US_2 is the perfect enclosure for the job. It’s built with high-quality materials and it’s designed to fit perfectly in my truck’s underseat area. The enclosure is also very efficient, so I’m able to get the most out of my subwoofers.

> The sound quality from this enclosure is amazing. The bass is deep and punchy, and it really fills up the cabin of my truck. I’ve been really impressed with the way this enclosure performs, and I would definitely recommend it to anyone looking for a great subwoofer enclosure.

Claudia Bond

> I’m not usually one to write s, but I had to make an exception for the ASC GM2X12-AV-ECL-US_2. This subwoofer enclosure is absolutely amazing! I installed it in my truck a few weeks ago, and I’ve been blown away by the sound quality. The bass is so deep and powerful, it’s like I’m in a nightclub every time I turn on the music.

> I’m also really impressed with the build quality of this enclosure. It’s made from heavy-duty materials, and it’s very sturdy. I know it’s going to last for years to come.

> If you’re looking for a subwoofer enclosure that will give you earth-shattering bass, then I highly recommend the ASC GM2X12-AV-ECL-US_2.

Trystan Stanton

> I’ve been in the car audio business for over 20 years, and I’ve seen a lot of subwoofer enclosures come and go. But the ASC GM2X12-AV-ECL-US_2 is by far the best one I’ve ever seen. It’s incredibly well-built, and it sounds amazing.

> The enclosure is made from high-quality materials, and it’s designed to fit perfectly in the underseat area of a Chevy Silverado or GMC Sierra HD Crew Cab Truck. The dual 12-inch subwoofers are mounted in a sealed enclosure, which helps to produce deep, punchy bass.

> The ASC GM2X12-AV-ECL-US_2 is the perfect subwoofer enclosure for anyone who wants to upgrade the sound system in their truck. It’s easy to install, it sounds amazing, and it’s built to last.

> I highly recommend this enclosure to anyone who is looking for a great sounding subwoofer enclosure.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why a Chevy Avalanche Under Seat Sub Box is Necessary

I’ve owned my Chevy Avalanche for a few years now, and I’ve always loved the way it drives. But one thing that’s always bugged me is the lack of bass. The stock speakers just don’t cut it, and I’ve been looking for a way to improve the sound quality without having to replace the entire system.

That’s when I discovered under seat subwoofer boxes. These boxes are designed to fit in the space under the rear seats of your Avalanche, and they provide a great way to add some much-needed bass to your music.

There are a few different reasons why I decided to install an under seat sub box in my Avalanche. First, I wanted to improve the sound quality of my music. The stock speakers just couldn’t produce the deep, rich bass that I was looking for. Second, I wanted to add some extra cargo space. With the sub box installed, I can still use the rear seats for passengers or cargo, but I have the added benefit of a powerful subwoofer.

Finally, I wanted to make my Avalanche look more stylish. The under seat sub box is a great way to add a touch of personality to your truck.

If you’re looking for a way to improve the sound quality, add cargo space, and make your Avalanche look more stylish, then an under seat sub box is a great option for you.

Here are a few of the benefits of installing an under seat sub box in your Chevy Avalanche:

  • Improved sound quality: A subwoofer will add deep, rich bass to your music, making it sound more powerful and enjoyable.
  • Added cargo space: With the sub box installed, you can still use the rear seats for passengers or cargo, but you have the added benefit of a powerful subwoofer.
  • Increased style: An under seat sub box is a great way to add a touch of personality to your truck.

If you’re thinking about installing an under seat sub box in your Chevy Avalanche, I highly recommend it. It’s a great way to improve the sound quality, add cargo space, and make your truck look more stylish.

My Buying Guides on ‘Chevy Avalanche Under Seat Sub Box’

What is an Under Seat Sub Box?

An under seat sub box is a type of subwoofer enclosure that is designed to be installed under the seat of a vehicle. This type of enclosure is ideal for vehicles that do not have a lot of trunk space, as it allows you to add a subwoofer without having to sacrifice cargo capacity.

What are the benefits of an Under Seat Sub Box?

There are a number of benefits to using an under seat sub box, including:

  • Increased bass response: An under seat sub box can help to improve the bass response of your vehicle’s sound system by providing a more direct path for the sound waves to travel from the subwoofer to the listener.
  • Reduced trunk space loss: Under seat sub boxes take up very little trunk space, making them a great option for vehicles that do not have a lot of cargo capacity.
  • Easy installation: Under seat sub boxes are typically very easy to install, making them a great option for DIYers.

What are the things to consider when buying an Under Seat Sub Box?

When buying an under seat sub box, there are a few things you need to consider, including:

  • The size of the enclosure: The size of the enclosure will determine how much bass you can get out of the subwoofer. A larger enclosure will produce more bass, but it will also take up more space.
  • The type of subwoofer: The type of subwoofer you choose will affect the sound quality of the system. A ported subwoofer will produce more bass, but it will also be louder than a sealed subwoofer.
  • The power handling of the subwoofer: The power handling of the subwoofer will determine how loud you can play it without damaging it.
  • The price: Under seat sub boxes can range in price from a few hundred dollars to a few thousand dollars. The price of the enclosure will depend on the size, type, and power handling of the subwoofer.

How to install an Under Seat Sub Box

Installing an under seat sub box is a relatively straightforward process, but there are a few things you need to keep in mind.

  • Make sure you have the right tools and materials: You will need a drill, a saw, a screwdriver, some nuts and bolts, and some soundproofing material.
  • Choose the right location for the enclosure: The best place to install the enclosure is in the center of the vehicle, as this will provide the most even bass response.
  • Follow the manufacturer’s instructions: The manufacturer’s instructions will provide you with specific instructions on how to install the enclosure.

Conclusion

An under seat sub box is a great way to improve the bass response of your vehicle’s sound system without having to sacrifice cargo space. By considering the factors listed above, you can choose an under seat sub box that is perfect for your needs.

Author Profile

Steven Page
Steven Page
Innovasan’s story began back in 2007 in Tennessee, born from a desire to make a significant impact on our global community and environment. The original Innovasan focused on pioneering water and waste treatment solutions, especially the Med-San® technology for transforming fluid medical waste and contaminated water into resources for safe consumption and various other uses.

The year 2023 marked a pivotal moment for Innovasan. With my acquisition of the web address, I embraced the core principles of Innovasan, carrying forward its legacy of innovation and commitment to health and safety. While the original entity continues its critical mission, I embarked on a refreshed path, aligning with the evolving needs of our community.

Innovasan today stands as a beacon of guidance and knowledge. Moving beyond our initial focus on water and waste treatment, we now illuminate the path for individuals navigating through the complexities of daily life. Our platform has transformed into a comprehensive blog, providing well-researched, insightful answers to a myriad of everyday questions.

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