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376 Lancaster By-Pass East | Lancaster,SC C94025
Welcome, Car Audio Fans! 

Letter for President:
Since its inception in 2006, True SPL has had a huge impact on the South East USA. True SPL Sound-off competitions have led our industry‘s manufacturers to design and produce better performing and more durable mobile electronics equipment; and in doing so, the clear winners in this venture are you, our valued consumers and competitors. 

We have developed the criteria to provide you with fair and unbiased Sound-off Competitions and put the Fun back into Competing so all can enjoy. It also defines the guidelines for anyone who has the interest in achieving accurate sound reproduction in their vehicles. We hope that these pages will give you a better understanding of what True SPL is all about the fun of sound off competition. 

We hope you‘ll find out how much fun it is when you experience the entertainment value that YOUR great car audio system can deliver. Best of luck; let the DB begin! 

Steve Koss, President 
True SPL



​Hello and welcome to True SPL! 

Letter for the Director:
Since True SPL‘s inception, its rules have evolved to meet these challenges. They have been designed to meet the needs of the competitor while still maintaining the benchmark for them to achieve. They are written to help you raise expectations when it comes to sound system performance in your vehicle and, to expand your knowledge of mobile electronics. 
The rules are written by members, for members; we hope that you find them to be a powerful reference to draw from when building and tuning the sound system in your vehicle.

Once all is said and done, the rules are but a part of the total Sound-off experience. There are so much excitement to the world of Sound-off competition and we hope that you enjoy them. But, you must always remember the most important rule in this book; 
Rule #1 – HAVE FUN!
We wish you all the best in your competition season! 

Paul Graddick, Director of True SPL