SUB CLASSES

The Sub Class is intended for average store customers in the local market.

SB5 is the only class open to industry professionals.

Five Classes:  NOTE: Number of subs listed indicates the MAXIMUM number of that size speaker allowed in that class.

1.       No constructed enclosure or speaker placement that may manipulate the SPL sensor may be placed forward of the “B” pillar and will be considered reason to reclassify the vehicle to the Port Wars or Super Port Wars divisions or disqualification. This decision will be at the discretion of the head judge.

2.       Scores will be determined by an average SPL taken over 30 seconds. Only music may be played.  (No test tones or sine waves).

3.       Sensor placement will be any place in front of the “B” pillar facing forward with globe affixed or mounted to windshield without globe at 12” to the left of passenger’s side A pillar and 4” above the dash. (Competitor’s choice)

4.       Only commercially available music may be used for judging (no burned cd’s). Music must contain a discernable bass beat or rhythm. (Must be music). Music with intentionally extended bass tones will not be allowed. This will be evaluated by the head judge.

5.       1200 rpm maximum (no revving engine during test).

6.       Windows up or down, doors and/or sun roofs open or closed. Doors can be fanned but not slammed during the run.

7.       In the event of a system malfunction prior to a score being recorded, the competitor will be given 5 minutes to make repairs and attempt to register a score.

8.       Factory or factory replacement front seats must be installed in the vehicle in factory locations. Must have the front bench or both front seats.

9.       No woofers larger than 8” inches may be forward of the “B” pillars.  (Limit 4)

10.   All woofers larger than 8" must be behind the back of the front drivers and passengers seats.

11.   SB5 is the only class open to any vehicles that use a system voltage higher than 14.7 maximum or utilize multiple alternators. Any competitor meeting any or all of the above qualifications may compete in SB5 by choice.

12.   Reruns are allowed.

13.   Any current USACI member who competes in at least one Street Beat event will be invited to compete in Street Beat at the USACI world finals.

14.   In the event an issue arises that is not covered above, the final ruling will rest with the on site event director.

Updated 1/27/2006