"The Loudest Sporting Event in the World"

The N.S.P.L. (National Sound Pressure League) is an organization that is set up to provide a safe and exciting SPL competition format, that serves as a sport for youth and people of all ages. This format contains a level for every competitor from the first-timer to the seasoned veteran.

The 10 different levels are designed to develop the opportunity to win for every competitor, by being classed with their same-powered peers. The mission of N.S.P.L. is to help the 12-volt industry by supporting the people who contribute to its growth such as consumers, retailers, and manufacturers

 

 

 

The NSPL recognizes outstanding achievement through records for the loudest vehicles by division and power class.

The records are set on 3 levels such as State, National, and World. Points championships are awarded to competitors with the most trophy points.

Qualification for finals is determined by the amount of trophy points collected by members during the season. A competitor must accumulate 50 points to qualify for the World Finals. The points system break down is according to where you finish and whether the show is a Regular or Real Deal event.


 

NSPL Different Competition Classes

 

SPL Classes -
     
Trunk 0-24? -1-Amp Limit(200 amp Draw) 1-Extra Battery
     
Trunk 25-48? -2-Amp Limit(200 amp Draw per amp) 2-Extra Battery
     
Car 0-24? -1-Amp Limit (200 amp Draw) 1-Extra Battery
     
Car 25-48? -2-Amp Limit(200 amp Draw per amp) 2-Extra Battery
     
Truck/SUV 0-30" -1-Amp Limit(200 amp Draw) 2-Extra Battery(One run of 1/0 power wire per Extra Battery)
     
Truck/SUV 31-60? -2-Amp Limit(200 amp Draw) 2-Extra Battery(One run of 1/0 power wire per Extra Battery)
     
No Wall 0-24? -1-Amp per sub, 1-Extra Battery per amp
     
No Wall 24?-48? -1-Amp per Sub, 1-Extra Battery per amp
     
Wall 0-400 amps -(400 amp Total Draw)
     
Wall 401-1200 -(1200 amp Total Draw)
     
Wall 1201-2400 amperes -(2400 amp Total Draw)
     
Wall 2401-up amperes -(2401 amps+)
     
Wall Hardcore 0-1200 -(1200 amp Total Draw)
     
Wall Hardcore 1201-2400 -(2400 amp Total Draw)
     
Modified One-Two -Extremely modified vehicles(window’s,interior) (No Amperage Restriction on Amplifiers)
     
Modified Three-Four -Extremely modified vehicles(window’s,interior) (No Amperage Restriction on Amplifiers)
     
Modified Five-Plus -Extremely modified vehicles(window’s,interior) (No Amperage Restriction on Amplifiers)
     
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Beginner 25-48 -2-amp limit (100 amp draw per amp) 1-extra battery, 1-run of 4 gauge
     
Beginner 0-24 -1-amp limit (100 amp draw) 1-run of 4 gauge
     
Insane -Enclosures Built up to 8inches beyond the B-pilar (No Amperage Restriction on Amplifiers)
     
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