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USAC is a competition organization
that holds both sound/installation and SPL soundoff competitions. USAC stands
for United States Autosound Competition. USAC's sound/installation competitions
judge cars based on a set of criteria including sound quality, imaging,
and installation quality. USAC's SPL competitions, called Outlaw SPL, score
vehicles by how loud they can play. |
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| Class ID |
Class Description |
| P300 |
Sonic Boom - USAC SPL Power - Stock 0-300 watts |
| P310 |
Sonic Boom - USAC SPL Power - Stock 301-900 watts |
| P320 |
Sonic Boom - USAC SPL Power - Stock 901-1800 watts |
| P330 |
Sonic Boom - USAC SPL Power - Stock 1801-up watts |
| P340 |
Sonic Boom - USAC SPL Power - Super Stock 0-300 watts |
| P350 |
Sonic Boom - USAC SPL Power - Super Stock 301-900 watts |
| P360 |
Sonic Boom - USAC SPL Power - Super Stock 901-1800 watt |
| P370 |
Sonic Boom - USAC SPL Power - Super Stock 1801-up watts |
| P400 |
Sonic Boom - USAC SPL Power - Modified 0-300 watts |
| P410 |
Sonic Boom - USAC SPL Power - Modified 301-900 watts |
| P420 |
Sonic Boom - USAC SPL Power - Modified 901-1800 watts |
| P430 |
Sonic Boom - USAC SPL Power - Modified 1801-up watts |
| P500 |
Sonic Boom - USAC SPL Power - Super Modified - 0-1000 watts |
| P501 |
Sonic Boom - USAC SPL Power - Super Modified - 1001-5000 watts |
| P502 |
Sonic Boom - USAC SPL Power - Super Modified - 5001-up watts |
| P520 |
Sonic Boom - USAC SPL Power - Port Wars - Open |
| P600 |
Sonic Boom - USAC SPL Power - Super Port Wars - Open |
