Classes

Midwest Street Division Classes are for beginner and entry level competitors only. Manufactures, retailers and professionals are discouraged from participating in these classes. This includes but not limited to: Anyone that has competed at ‘any’ World Finals, anyone that is a current member of another sound off organization, someone that has higher skills or knowledge than others in their class. Moving someone out of these classes is at the sole direction of the event promoter or judge. Midwest Street Division rules may vary from event to event. General MSD rules are outlined in Section 7 of this rule book.

Midwest Street Division ( no points ) These are typically offered at most Midwestspl Events. In these classes, music must be played.

  • MSD 1 – Up to 1-12, 2-10’s or 3-8’s ( peak score )
  • MSD 2 – Up to 1-15, 2-12’s, 3-10’s or 4-8’s ( peak score )
  • MSD 3 – Up to 1-18, 2-15’s, 4-12’s ( peak score )
  • MSD 4 – Unlimited ( peak score )

National Level – These classes are for the serious competitor that wants to compete against others from their region. These classes are typically more advanced and have a certain set of rules and guidelines to go by. These classes are eligible to attend finals.

Basic Division – Designed for your average retailer level install. For those with a simple yet competitive system that would want to compete on a national level.

  • Basic 1 – Up to 1-15, 2-12’s, 3-10’s or 4-8’s, up to 1,000 watts
  • Basic 2 – Up to 1-18, 2-15’s, 4-12’s or 6-10’s, up to 2,000 watts
  • Basic 3 – Unlimited Speakers / up to 4,000 watts
  • Basic 4 – Unlimited Speakers / up to 8,000 watts
  • Basic Trunk – Unlimited Speakers, up to 2,000 watts

Advanced Division – Designed for your more serious competitors. These systems you’ll typically see ‘walled off’ designs

  • Advanced C – Up to 1-21, 2-18’s, 4-15’s, 6-12’s, 9-10’s, 14-8’s, 26-6’s up to 4,000 watts ( max clamped )
  • Advanced No Wall – Unlimited Speakers, Unlimited Power
  • Advanced 1 – Up to 1-21, 2-18’s, 4-15’s, 6-12’s, 9-10’s, 14-8’s, 26-6’s up to 4,000 watts ( max clamped )
  • Advanced 2 – Up to 2-24’s, 3-21’s, 4-18’s, 6-15’s, 9-12’s, 13-10’s, 21-8’s, 37-6’s up to 8,000 watts ( max clamped )
  • Advanced 3 – Unlimited Speakers, Unlimited Power ( up to 15.5 Volts )

Xtreme Division ( 30 second music average ) – This division measures that SPL outside the passenger vehicle. Its to replicate driving down the road with your windows down.

  • Xtreme 1 – Up to 1-15, 2-12’s, 3-10’s or 4-8’s, 7-6.5’s / Unlimited Power / Basic Rules
  • Xtreme 2 – Unlimited Woofers / Unlimited Power / Basic Rules
  • Xtreme 3 – Up to 1-21, 2-18’s, 4-15’s, 6-12’s, 9-10’s, 14-8’s, 26-6’s / Unlimited Power / Advanced Rules
  • Xtreme 4 – Unlimited Woofers / Unlimited Power / Advanced Rules

Kaos Division ( 1 1/2 minute music average ) – Sensor placement at the center of the windshield. Competitors play their system for 1 1/2 minutes full tilt!

  • Kaos 1 – Up to 1-15, 2-12’s, 3-10’s, 4-8’s, 7-6.5’s / Unlimited Power / Basic Rules
  • Kaos 2 – Unlimited Woofers / Unlimited Power / Basic Rules
  • Kaos 3 – Up to 1-21, 2-18’s, 4-15’s, 6-12’s, 9-10’s, 14-8’s, 26-6’s / Unlimited Power / Advanced Rules
  • Kaos 4 – Unlimited Woofers / Unlimited Power / Advanced Rules

Additional Classes

At some events, additional classes may be offered. These classes are for fun and do not accumulate points for finals.

Mayhem Division – Three minute music average class! Anything goes! This is a class to see who’s system can last the longest!

S.L.A.M. – Sound, Looks & Modifications. A car show type of format that allows competitors to acquire points for everything they’ve done to their vehicle. Unofficial class. No points. Not at finals. Not at every event. S.L.A.M. Score Sheet.

Power SPL – Designed for Children’s toys ( Power Wheels ), a fun format for the kids to participate in with their parents. Unofficial class. No Points.

Loud N Low – The perfect class to find a true ground pounder! We’ll place the sensor in the center of the windshield. Competitors will play 20, 25, 30 and 35Hz. We’ll average their scores together to get a score. Loudest average score wins!

Top Dog – Everyone plays the same! We’ve developed the perfect 1 minute song to test a true musical system. Each competitors plays the exact same song ( track 19 on the official Midwestspl CD ). This song covers frequencies between 30 and 50 Hz randomly. Who ever plays the song the loudest, wins!