PEUGEOT 807 SHOW CAR
Sound Auto Concept's extreme car audio project. An adventure that began over ten years ago, now transformed into an extraordinary installation.
A story that began in 2016
In 2016, we decided to launch the Peugeot 807 project to succeed our old Seat Toledo equipped with six Ground Zero subwoofers. This Seat allowed us to discover the world of car audio demonstrations, participate in numerous gatherings, and develop our experience in designing show cars.
Very quickly, we wanted to go further by creating a more imposing vehicle, capable of incorporating a much more ambitious installation. After several evolutions between 2016 and 2019, the project was put on hold so we could focus on developing Sound Auto Concept.
In early 2025, we decided to fully restart the vehicle with a single goal: to build a show car unique in France, deliberately spectacular and intended for outdoor demonstrations.
The project's evolution
From the Seat Toledo to the first versions of the Peugeot 807, up to its complete transformation for 2026.
18 Ground Zero subwoofers
The heart of the project rests on 18 Ground Zero GZNW30SPL-D1 subwoofers installed in a symmetrical BP 4th Order enclosure. This type of enclosure was chosen to obtain very high acoustic pressure while maintaining excellent musicality. This choice is the result of numerous tests carried out since the first versions of the vehicle.
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18 ×
Ground Zero GZNW30SPL-D1 -
BP 4th Order
Custom enclosure -
SPL & Musical
Car Audio demonstrations
4 custom 24-inch woofers
The third evolution introduces four custom-developed 24-inch woofers. Each speaker accepts 2,800 W AES and was designed to deliver powerful bass during outdoor demonstrations.
Midrange & compression drivers
The doors receive 4 Ground Zero GZCM10-4PPX and 3 Ground Zero GZCT5000SPL-B on each side. At the rear, twenty GZCM10-4PPX are paired with several compression drivers to obtain very high-performance diffusion in front of the vehicle.
Over 128,000 Watts RMS of amplification
The installation uses twenty SounDigital amplifiers to separately power the subwoofers, 24-inch woofers, midrange, and tweeters.
| USE | AMPLIFIER | QTY |
|---|---|---|
| Subwoofers | SounDigital 12000.1 EVO 4.0 1Ω | 6 |
| 24" Woofers | SounDigital 12000.1 EVO 4.0 1Ω | 2 |
| Midrange | SounDigital 3000.1 EVO 6 | 8 |
| Tweeters / highs | SounDigital 800.4 EVO 6 | 4 |
DSP, power supply & cabling
Signal processing is entrusted to an ESX QE812SP DSP paired with the RC-QE controller. The music is played from a computer equipped with a touchscreen and transmitted via fiber optic to the DSP.
The power supply relies on 20 Lithium LTO cells, two GS Audio 360 A alternators, and full Four Connect cabling.
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ESX QE812SP
DSP processing -
20 LTO cells
Energy storage -
2 × 360 A
GS Audio alternators
The Peugeot 807 in action
Discover our Peugeot 807 Show Car through three demonstration videos. An extraordinary car audio installation, developed to share our passion.
Peugeot 807 Presentation
Discover our Show Car and its exceptional audio installation.
Car Audio Demonstration
Discover the audio system of the Peugeot 807 in demonstration.
An extraordinary installation
Dive into the world of our Peugeot 807 and its demonstrations.
Built for our passion for Car Audio
We know that this Peugeot 807 will never be universally loved. Some will appreciate its spectacular side, others will find it excessive. It is a choice we stand by.
We built it above all to please ourselves, demonstrate our know-how, and share our passion for Car Audio. Whether it pleases or not, it suits us perfectly.