the dj firm x Trulli
Battery-Powered Parade Audio on Michigan Avenue
When the Parade Gets Wider, Move the Sound Closer
Chicago’s holiday parade is not a small test. It is a long nighttime route down Michigan Avenue, lined with heavy crowds, dense RF traffic, winter weather, and almost no room for production mistakes. In 2025, The DJ Firm, led by co-owner and CEO Eric Sampson, used that environment to prove a different model: fully battery-powered float audio, plus wireless crowd-facing coverage that stayed close to spectators instead of asking them to hear everything from the center of the street.
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Executive Summary
Float Audio
Four double-stacked Bass50 zones with four Bose S1 tops, plus two additional single Bass50 zones with two EV Everse 12s, plus a booth monitor
Wireless Coverage
Four rolling crowd-adjacent positions tracking the float down Michigan Avenue so audio stayed near spectators, especially at wider intersections.
Battery-Only
The DJ booth, float coverage, and crowd-facing systems were all designed around battery-powered audio, with wireless transmission replacing long cable runs.
Scale
The parade route was almost 1.5 miles long with approximately 1.5 million spectators.
The Challenge
Battery-powered audio in winter, wireless transmission in hostile RF conditions, the parade route was long, visually wide, and a dense urban crowd depth that expanded at the intersections. The float did not get closer to the audience; the audience got farther from the float.
The Trulli answer was to move the sound to the audience instead. Moving sound reinforcement on a parade route, fast deployment with no long public cable paths, all executed in a way that is only made possible with the Trulli Bass50 system.
The Parade Route
The parade route was almost 1.5 miles long with approximately 1.5 million spectators.
Key Takeaway
Most parade audio is built around one assumption: put the sound on the float and let distance do the rest. This project flipped that assumption.
Instead of treating the float as the only sound source, The DJ Firm used the float as the program origin point and treated the crowd edge as an extension of the system. That made the experience feel more direct, more musical, and more human—especially for spectators who would otherwise hear the float only after it had already passed.
System at a Glance
Source
Booth
DJ White Shadow and Discotec on the float
feeding the parade soundtrack from the DJ booth
Primary Coverage
Monitors
(Hardwired)
A float package built around the Bass50
with compact battery tops and a booth monitor
Transport Logic
Rolling Carts
(2 Total)
Wireless crowd-facing systems moving alongside the float
so music stayed present at the curb and at the intersections
Wireless Logic
Signal Strategy
No long street runs
no generator trailer in the crowd lane, no dependence on fixed power drops
Explore the Build
The Float System
How the DJ booth, monitors, and float-mounted Bass50 zones were laid out.
Explore the System
Rolling Crowd Systems
How the curbside systems followed the float so the audience heard the music up close.
Explore the System
Wireless Parade Audio
How the signal moved from the float to moving speaker positions in dense RF.
Explore the Signal Strategy
Cold Weather & Parade Ops
What changed because it was below freezing, nighttime, and moving through a major holiday crowd.
Explore Our Approach
