Ground Zero
One of our most ambitious show builds — a fully themed "Prince of Persia" car running Ground Zero subwoofers in twin custom fiberglass enclosures, an Alpine head unit, and full LED lighting throughout. Built to win attention at every show.
What we did
This themed show car is one of 14 demo and show builds in the Galaxi Sound portfolio, and one of 4 built around Ground Zero equipment. The 56 photos in the gallery above show the finished work in detail.
Below, each part of the work list is explained in plain terms — what it involves, and how the same idea can be scaled to a car you drive every day.
Ground Zero is a German car audio brand best known for high-output subwoofers and amplifiers, with a strong following in SPL and show-car circles. Its bold, visible hardware makes it a natural fit for demo and show cars.
Other Ground Zero builds in the portfolio
Plain-language notes on every item in the work list — what it is, why it is done, and what to know before doing the same on your car.
A subwoofer only performs as well as the box it's in. A custom enclosure is built to the internal volume the driver needs, then shaped to the space the car actually has — trunk floor, side walls, rear deck or cabin. Fiberglass lets the box follow curves no flat MDF panel can, which is why show builds lean on it. On a daily driver the same skills can go the other way: a stealth box that hides the sub and keeps the trunk usable.
Subwoofer & enclosure installs →Subwoofers reproduce the lowest notes — generally below about 80–100 Hz, where regular door speakers can't move enough air. Running several subs, as show and SPL cars often do, raises output, but each one also needs amplifier power, enclosure volume and electrical capacity to match. For most daily drivers, one or two well-chosen subs in the right enclosure give deep, clean bass without giving up the trunk.
How to choose a car audio system →The head unit is the source and control center of the system: it's where you pick the music, adjust volume and, on many units, set basic EQ and crossovers. On a custom build the challenge is integrating it cleanly — mounted in a custom dash or panel, or tied into the factory controls. On modern cars we use interface adapters such as iDatalink Maestro, PAC and Metra to keep steering-wheel controls and other factory features working.
Head unit installation →Lighting is what makes a show car readable in a dark venue: it outlines enclosures, amplifiers and panels and ties them to the build's color scheme. Modern LED strips run relatively cool and draw little current, and should be wired on their own fused circuit and switch. On a car you drive on the street, keep effects inside the cabin and trunk — Florida restricts certain colors and flashing lights that are visible from outside the vehicle.
Custom car audio builds →A themed build carries one idea through the whole car — colors, graphics, shapes and even the way the equipment is presented. It combines several trades: custom paint or hand-painted artwork, printed or cut vinyl graphics, and fabricated pieces in fiberglass, wood or acrylic that tie the audio into the theme. Planning comes first, because every panel, enclosure and light has to follow the same concept.
Wraps & vinyl graphics →Show and demo cars follow the same sequence as any serious system, just taken further. First comes planning: what the car is for, where the equipment can live, and how the audio will fit the look of the build. Then fabrication — enclosures, panels and trim made to fit that specific car. Then wiring, with correctly sized power cable, fusing and clean signal runs. Last comes tuning: gains, crossover points and time alignment set for that interior, by ear and with measurement tools.
The team behind these builds holds IASCA championship titles and an SPL world record, and the same crew handles everyday installs at our Kendall shop — from a head unit swap to a full custom build. On daily drivers we keep installs lease-safe, with factory-retention harnesses and reversible wiring, so the car can go back to stock.
You don't need a show car to get show-car workmanship. These are the services and guides that match the work in this build:
Head units, speakers, subwoofers, amplifiers, custom enclosures and full custom builds, tuned in-house.
Color changes and graphics in vinyl, with the factory paint protected underneath.
Our guide to planning a system around your car, your music and your budget.
How the major brands compare by category, from head units to subwoofers.
Tell us your car and your goal — we build from clean factory upgrades to full competition systems. IASCA World Champions in Kendall, Miami.
