
Handcrafted bass and custom audio builds that hit harder
At Campbell Custom Audio, we design and build tailored subwoofer boxes and high-performance Bluetooth speakers crafted to elevate your sound experience in St. Louis and beyond.
What we build for you
From vehicle-specific vented sub enclosures to one-of-a-kind Bluetooth boomboxes, every piece is tuned for maximum acoustic performance, precision, and durability.
Custom subwoofer boxes
Engineered to exact airspace and tuning frequencies for your specific subwoofers and vehicle trunk or cab space, delivering clean, pounding bass.
Bespoke Bluetooth speakers
Portable, battery-powered sound systems built inside custom wood enclosures. Enjoy rich, room-filling sound with artisanal craftsmanship wherever you go.
Custom fabrication & tuning
High-grade Baltic birch or MDF construction with custom carpet, bedliner, or stained wood finishes tailored to match your personal aesthetic.
Audio advice & build logs
Need help dialing in your amp gains, choosing the right port area, or picking drivers? Check out our workshop guides and behind-the-scenes logs.
"The quality of the enclosure completely transformed my car's sound. The craftsmanship is flawless and the bass is tight and punchy. Truly top-tier work!"
Satisfied customer, St. Louis MO
Built with passion for pure sound
At Campbell Custom Audio, we believe that off-the-shelf boxes never do your speakers justice. We measure, cut, and finish every custom enclosure with acoustic precision to make sure you get smiles per decibel every time you turn on your system.
Frequently asked questions
Find answers to common questions about our custom speaker enclosures, materials, ordering process, and build timelines.

Get in touch
Campbell Custom Audio
St. Louis, Missouri
Workshop hours
Monday - Friday: 9am - 6pm
Saturday: 10am - 4pm
Sunday: Closed
Direct contact
256-318-9673
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