SKU: 38687572659

ESX QXB8A - 8" Active Subwoofer Enclosure

$173.25 $192.50
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Description

ESX QXB8A - 8" Active Subwoofer EnclosureSpecifications 20 cm (8") Active Subwoofer System (Bassreflex) Integrated Class D Amplifier (Power4 Active Module) 1 x 400 800 Watt RMS Max. LPF 40 120 Hz @ 12 dB Phase Shift 0 180 Bass Boost 0 6dB @ 45Hz RCA Low Level Input High Level Input Auto Turn On Function (DC or signal) Start stop capable, 5 sec. up to 7 Volts EPS PRO with 10R 150R 600R (switchable) Input Sensitivity 15 or 40 Volts (switchable) Triple Limiter Function, Clipping LED Bass Remote

Specifications

  • 20 cm (8") Active Subwoofer System (Bassreflex)
  • Integrated Class D Amplifier (Power4 Active Module)
  • 1 x 400/800 Watt RMS/Max.
  • LPF 40-120 Hz @ 12 dB
  • Phase Shift 0°/180°
  • Bass Boost 0-6dB @ 45Hz
  • RCA Low Level Input
  • High Level Input
  • Auto Turn-On Function (DC or signal)
  • Start-stop capable, 5 sec./ up to 7 Volts
  • EPS PRO with 10R / 150R / 600R (switchable)
  • Input Sensitivity 15 or 40 Volts (switchable)
  • Triple Limiter Function, Clipping LED
  • Bass Remote Controller
  • Compact Enclosure with Logo Embroidery
  • Protection Grille
  • Optional Standing Feet for Downfire Operation
  • Dimensions 48 x 33 x 18 cm

    A really good subwoofer system always needs an additional powerful amplifier. If the installation of an external amplifier is too complex or you don't have the space, you can use active models that already have pre-installed amplifiers. But beware, often for cost reasons, analog power amplifiers that are rather weak or outdated in terms of performance are often installed. Sometimes even the simplest 12 volt bridge chips can be found inside that do no more than simple car radios. ESX takes a different approach here and integrates state-of-the-art Class D amplifier modules that can mobilize up to 400 watts/RMS output power. Equipped in this way, the very compact QUANTUM QXB active subwoofer systems deliver extremely high performance and bass levels.

     

    Therefore ESX uses high-quality and award-winning POWER4 active modules, which are also particularly efficient with up to 84% efficiency. Thanks to the latest Class D circuit and EPS PRO, these modules are even prepared for connection to very modern vehicles. The included cable remote control can be used to adjust the bass from the driver's seat.

    ESX has also included 4 mounting feet in the active versions of the QUANTUM QXB subwoofer systems, which can be screwed onto the front if required. This means that both models can be converted into "down-firing subs" with little effort. These boxes, which radiate downwards with the woofer, are particularly suitable, for example, for installation in double boot floors.

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 38687572659

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    4.0 ★★★★★
    Based on 19 reviews
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    Product Reviews
    M
    Verified Purchase
    Marsha
    Phoenix, US
    ★★★★★ 4
    Beautiful sturdy, cozy chair, BUT…..
    Color: White, Color: White
    Updated review. I was so excited to get this chair that I jumped the gun and wrote the review prior to spending more time seated. I only have one issue, which is the back bottom of the seat cushion. That’s a big deal. It appears so thick, fluffy and inviting, however, when I sat in it for a couple of hours it completely went flat in the back feeling like I was sitting on a board. I’m 5’4” 180 lbs, which means my feet don’t touch the floor so adding a cushion will elevate me a little more. I’m OK with that but it’s going to ruin aesthetic of the chair which is which is not ok. I do love the idea of this chair. It’s design and the color. I wish the seat cushion had a zipper, which would eliminate my issue. I’d say if you’re someone who has to spend a lot of hours in this chair, you probably won’t like it. I do like the reclining back and the foot rest. It is comfortable to lay back but that doesn’t change the issue in the back bottom of the seat cushion. I absolutely love this chair, I didn’t want to get up. It’s beautiful and cozy. Assembly was easy as I’ve assembled chairs before. I changed the wheels to a double roller blade easy on hard wood floors. I also scotch guarded the entire chair. This chair is sturdy and well made.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 25, 2026
    L
    Verified Purchase
    Lauren
    Battle Creek, US
    ★★★★★ 5
    just get it and stop second guessing
    Color: White, Color: White
    I reallllly love this chair. I almost talked myself out of it because of some of the bad reviews here and there but i’m glad i listened to a majority of the good reviews, because this chair is perfect. shipping: it was super fast. it came 5 days earlier than expected. I got it on a Monday when it said it’d be here on Friday packaging: double boxed and bubble wrapped. Didn’t find any dings or scratches on anything. all parts were there including instructions assembly: my boyfriend put it together in 40 minutes. We didn’t have any issues zipping up the back cover like other reviews said and he said it was easy instructions to follow, and easy to put together. size and comfort: it’s bigger than the pictures let on! I’m 5’3 135lbs and feel like I’m sitting on a giant cloud. The comfort is 10/10. I just had a chair with basicslly zero butt cushion which i cannot have while working from home 8+ hrs a day in a chair. Comfort was the most important for me and I finally can’t feel the flat seat under me. I can’t express how comfy it is. Functions: can move the arm rests up and down. adjust the back to tilt all the way back to a sleeping position or fully upright which i didn’t even realize was a function! The only thing with the armrests; if you’re wanting your pet on it (like advertised) when the arm rests is put down there is a big gap that isn’t comfortable for animals (as pictured) so I have to put a blanket or pillow there for my small dog to lay comfortably. I’m obsessed with the fact I can sit cross legged, normally, laying down, sprawled up, or legs up. I have room to sit however I want, and the foot rests helps a ton with feeling even more comfortable. Overall, I’d get this chair 10x over. Not only do I work from home and spend hours in a chair, but I spend additional time playing video games so a good quality chair is very important to me. This has began to help fix my posture and back and neck issues. Get it!!!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 24, 2026
    J
    Verified Purchase
    Jessica
    West Palm Beach, US
    ★★★★★ 5
    If You Sit Weird Like Me… Just Buy This Chair
    Color: Galaxy Black
    I work from home and spend a lot of time sitting for hobbies like Legos, PC games, and crafts—so a comfortable chair is a must. I LOVE this chair so far. I’ve always struggled to get comfortable in traditional office chairs, and the ability to move around is really important to me. With this one, I can easily cross my legs, use the footrest to stretch out with my knees bent, or just sit normally. I’m 5’4”, so my feet don’t quite touch the ground, but that doesn’t bother me since I’m constantly switching positions anyway. I’ll probably add a small pillow for extra back support and maybe fold a blanket for a bit more seat cushioning. It’s comfortable overall, but after long periods of sitting, you might start to feel it. The black sparkle version is MUCH cuter in person, and I’m so glad I went with it. A lot of reviews say, “don’t think about it, just get it”—and honestly, they’re right. I debated for a couple weeks before buying, and I have zero regrets. Assembly was easier than I expected. I tend to get frustrated putting things together, but this was pretty painless. One tip: check inside the cushioned back piece for the extra headrest part—you’ll need it to attach to the hard back before inserting it into the cushion. Once I figured that out, the rest was simple. The chair is a bit larger than a standard office chair and can feel a little bulky depending on your desk setup, but I actually like the extra space since I move around a lot while sitting. It feels sturdy and well-made. It’s also slightly warmer than a mesh chair, which I personally love because I’m always cold. I am just happy to find a chair that feels comfortable like a recliner and movable like an office chair.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 20, 2026
    S
    Verified Purchase
    Space Coven
    San Leandro, US
    ★★★★★ 5
    Great chair
    Color: Pink
    I love this chair! I use it for streaming and working on making jewelry! It’s very comfortable and I love that I can sit different ways in it! I can stream longer than I could in other computer chairs I’ve had! I definitely recommend this if you have to sit for a long time but like to sit in different positions! The instructions were a bit confusing but I did figure it out! I have had to spot clean it a few times because of kids and pets but the material has held up! The back is very comfortable and supportive! I like that I can adjust it! Great chair for the price! It’s held up well and I like that you can adjust the back!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 11, 2026
    A
    Verified Purchase
    Allen
    Draper, US
    ★★★★★ 4
    Good office chair for the money
    Color: White
    It is a good quality chair that is comfortable and aesthetically pleasing. The arms aren't necessarily big enough to hold our cat - but that's because he's fairly large by cat standards. The arm rests moving is definitely nice and provides lots of opportunities to 'setup the chair' in a way that works best for you. The instructions were relatively easy to follow (take your time and think it through to make sure you have everything 'aligned right' at first) and the chair is sturdy and holding up well.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 17, 2026

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