Where Music Matters

Products, installation, fabrication, and tuning from one shop.

We can sell you the right product, install it correctly, fabricate what the vehicle needs, and tune the finished system—but we first listen to what you want it to do.

Shop ProductsShop DJ & PABook a Service

Shop the equipment.

Buy online, pick up in Marrero, or add professional installation and tuning when the job needs it.

View All Products
SpeakersCoaxials, components, widebands, tweeters, and everyday speaker upgrades.Shop speakers → Pro Audio & High OutputMids, horns, compression drivers, and tweeters for systems built to get loud and stay clear.Shop high-output audio → SubwoofersShallow, daily-driver, sound-quality, and high-output bass options.Shop subwoofers → AmplifiersMono, multi-channel, motorcycle, marine, and system amplifiers.Shop amplifiers → DSP & IntegrationProcessors and interfaces for factory-radio retention, active systems, and precise control.Shop DSP products → Batteries & ElectricalBattery, charging, wiring, and voltage-support products for reliable system power.Shop electrical → Built-to-Order EnclosuresFinished subwoofer boxes sold as products for common vehicles, subwoofer sizes, and space requirements.Shop enclosures → Custom Acrylic & Lit FXIlluminated speaker rings, acrylic panels, logos, and custom lighting products made by SMS.Shop Lit FX → DJ & PA EquipmentPowered speakers and event-sound products for DJs, weddings, parties, and small venues.Shop DJ & PA →

Add professional service when needed.

Service is available for customers who want SMS to handle fitment, wiring, fabrication, setup, or final tuning. It is not required to buy products from us.

Speaker InstallationFactory replacement, component systems, pro-audio builds, motorcycle systems, and custom mounting.View speaker service → Amplifier InstallationPower wiring, protection, mounting, signal routing, gain structure, and system setup.View amplifier service → DSP Installation & TuningBuy a processor, add OEM integration, schedule tuning, or combine all three.View DSP options → Subwoofer & Enclosure WorkSealed, ported, under-seat, vehicle-specific, acrylic, and fully custom bass solutions.View bass services → Custom FabricationCNC, laser, acrylic, 3D scanning, 3D printing, panels, adapters, and custom-fit parts.View fabrication → Jeep, Motorcycle & PowersportsOpen-air and vehicle-specific systems built around output, exposure, charging, space, and service access.View vehicle services →
Buy the product.Order online or visit SMS Car Audio for over-the-counter sales and product help.Shop Now
Add the service.Have SMS install, fabricate, integrate, or tune equipment purchased through the shop.Book Service
Use both.Choose the equipment and let SMS complete the installation, fabrication, setup, and final tuning.Contact SMS
Where Music Matters

Start with the result you want.

Tell us whether the goal is better everyday sound, loud pro-audio output, more bass, an open-air system, a custom visual build, DJ equipment, or a complete tuned system. We will direct you to the right product, service, or combination.

Shop ProductsUse the Resource CenterCall or Text
Services at SMS Car Audio

Car Audio Installation, Tuning, and Custom Work in Marrero.

This page is the service menu. Choose what you need installed, upgraded, corrected, tuned, fabricated, or built for the vehicle.

Book / Start a JobCall or TextHow Installs Work
Car, truck, Jeep, motorcycle, SxS, boat, and specialty vehicle installs.Factory radio integration, speakers, amps, subwoofers, DSP, and electrical.Custom enclosures, panels, acrylic, Lit FX, CNC, laser, 3D scan, and 3D print work.Installed, wired, mounted, and tuned for the vehicle instead of guessed online.

What SMS Installs.

These are the main services customers can book or quote through the shop.

Most CommonFactory Audio Upgrades

Keep the factory radio while improving signal, speakers, power, bass, and tuning.

  • OEM integration
  • DSP tuning
  • Factory feature retention
Quote This Service →Install ServiceSpeaker & Amplifier Installs

Clean speaker replacement, amplifier mounting, wiring, setup, and system matching.

  • Door and dash speakers
  • Multi-channel amplifiers
  • Clean wiring and mounting
Start Install Quote →Bass ServiceSubwoofer & Enclosure Builds

Sealed, ported, under-seat, and custom-fit bass solutions built around the vehicle.

  • Custom enclosures
  • Truck under-seat boxes
  • Output and space planning
Plan Bass Upgrade →Tuning ServiceDSP Tuning & Signal Correction

Set levels, crossover points, timing, EQ, and signal flow so the system works together.

  • OEM signal cleanup
  • System tuning
  • Final listening checks
Book Tuning →Support ServiceBattery, Wiring & Electrical

Power delivery support for stronger systems that need stable voltage and clean wiring.

  • Power and ground upgrades
  • Batteries and support parts
  • System safety checks
Quote Electrical →In-HouseCustom Fabrication & Lit FX

Panels, adapters, lighting, acrylic, engraving, CNC, laser, 3D scan, and 3D print work.

  • Vehicle-specific panels
  • Lit FX acrylic and lighting
  • Custom-fit parts
Start Custom Job →

Problems SMS Solves.

This section is different from the Resource Center. It is about real install problems customers bring to the shop.

Factory System Sounds WeakAdd clean signal, better speakers, amplification, bass, and DSP instead of guessing at parts.
System Is Loud But Not CleanCorrect tuning, crossover points, levels, wiring, speaker placement, and install details.
Bass Does Not Fit the VehicleBuild around seat clearance, airspace, tuning, port area, cargo space, and daily use.
Previous Install Needs CleanupInspect wiring, mounting, signal path, gain structure, noise issues, and safety concerns.
Vehicle Needs Custom PartsUse CNC, laser, 3D printing, scanning, acrylic, and panel work when universal parts are not enough.
Open-Air Audio Needs OutputPlan Jeep, Harley, SxS, Slingshot, marine, and motorcycle systems for real-world use.

Vehicle Service Categories.

Choose the vehicle type when the install environment matters as much as the equipment.

Cars & TrucksDaily drivers, trucks, factory audio upgrades, under-seat bass, speakers, amps, and DSP.Start a Quote →Jeep AudioJL, JT, Wrangler, Gladiator, lighting, panels, bass, and weather-aware install planning.Jeep Services →Harley & MotorcycleFairings, lids, tour packs, rider systems, high-output speakers, amps, and tuning.Motorcycle Services →SxS / MarineOpen-air and harsh-use audio where output, mounting, wiring, and exposure matter.Powersports Services →

How to Start a Service Job.

Simple path: identify the vehicle, define the goal, then quote the correct install.

1Send the VehicleYear, make, model, trim, factory audio package, and photos if needed.
2Define the GoalCleaner sound, more bass, louder output, show lighting, custom panels, or repair/cleanup.
3Book the InstallSMS confirms parts, labor, schedule, deposit, and the plan before work starts.

Book the Right Service.

If SMS is installing the system, contact the shop before buying random parts. The right answer depends on the vehicle, factory signal, mounting space, electrical support, and final goal.

  • Vehicle year, make, model, trim, and factory audio package.
  • Photos of the radio, doors, dash, cargo area, saddlebags, or current equipment.
  • Sound goal, custom work goal, and budget range.
  • Equipment already owned or installed.
Book / Start a JobContact SMSCall or Text

SMS Car Audio

5919 4th St, Marrero, LA 70072. Serving Greater New Orleans, Westbank, Gretna, Harvey, Metairie, Kenner, Belle Chasse, and surrounding areas.

Call 504-289-8127Get DirectionsResource Center