Midwestspl uses the manufactures size ratings when determining

how many of what size speaker is allowed in each class.

 

Class	No Mods	Walls	Speakers	Power	Battery Type	Max Voltage	Vehicle	Music/ Tone	Time	Average / Peak
MSD 1	B-Pillar Forward	Yes	up to 1-12, 2-10's or 3-8's	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
MSD 2	B-Pillar Forward	Yes	up to 1-15, 2-12's or 3-10's	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
MSD 3	B-Pillar Forward	Yes	1-24, 1-21,1-18, 2-15 or 4-12's	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
MSD 4	B-Pillar Forward	Yes	Open	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
Class	No Mods	Walls	Speakers	Power	Battery	Max Voltage	Vehicle	Music/ Tone	Time	Average / Peak
Basic 1	Passenger Compartment	No	up to 1-15, 2-12's, 3-10's	500 Watts	12 Volt	15.5	No CRX	Any	30 Seconds	Peak
Basic 2	Passenger Compartment	No	up to 1-15, 2-12's, 3-10's	1,000 Watts	12 Volt	15.5	No CRX	Any	30 Seconds	Peak
Basic 3	Passenger Compartment	No	1-24, 1-21,1-18, 2-15 or 4-12's	2,000 Watts	12 Volt	15.5	No CRX	Any	30 Seconds	Peak
Basic 4	Passenger Compartment	No	Unlimited	4,000 Watts	12 Volt	15.5	Any	Any	30 Seconds	Peak
Basic Trunk	Passenger Compartment	No	Unlimited	2,000 Watts	12 Volt	15.5	Trunk	Any	30 Seconds	Peak
Class	No Mods	Walls	Speakers	Power	Battery	Max Voltage	Vehicle	Music/ Tone	Time	Average / Peak
Advanced No Wall	Above window line / B-Pillar Forward	No	Unlimited	Unlimited	12 Volt	15.5	Any	Any	30 Seconds	Peak
Advanced 1	B-Pillar Forward	Yes	1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakers	4,000 Watts	12 Volt	15.5	Any	Any	30 Seconds	Peak
Advanced 2	B-Pillar Forward	Yes	2-24's, 3-21's, 4-18's, 6-15's, 9-12's* speakers	8,000 Watts	12 Volt	15.5	Any	Any	30 Seconds	Peak
Advanced 3	B-Pillar Forward	Yes	Unlimited	Unlimited	12 Volt	15.5	Any	Any	30 Seconds	Peak
Class	No Mods	Walls	Speakers	Power	Battery	Max Voltage	Vehicle	Music/ Tone	Time	Average / Peak
Xtreme 1	Passenger Compartment	No	up to 1-15, 2-12's, 3-10's, 4-8's* Speakers	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
Xtreme 2	Passenger Compartment	No	Unlimited	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
Xtreme 3	B-Pillar Forward	Yes	1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakers	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
Xtreme 4	B-Pillar Forward	Yes	Unlimited	Unlimited	12 Volt	15.5	Any	Music	30 Seconds	Average
Class	No Mods	Walls	Speakers	Power	Battery	Max Voltage	Vehicle	Music/ Tone	Time	Average / Peak
Kaos 1	Passenger Compartment	No	up to 1-15, 2-12's, 3-10's, 4-8's* Speakers	Unlimited	12 Volt	15.5	Any	Music	1 1/2 minute	Average
Kaos 2	Passenger Compartment	No	Unlimited	Unlimited	12 Volt	15.5	Any	Music	1 1/2 minute	Average
Kaos 3	B-Pillar	Yes	1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakers	Unlimited	12 Volt	15.5	Any	Music	1 1/2 minute	Average
Kaos 4	B-Pillar	Yes	Unlimited	Unlimited	12 Volt	15.5	Any	Music	1 1/2 minute	Average
Mayhem	B-Pillar	Yes	Unlimited	Unlimited	18 Volt	18	Any	Music	3 minutes	Average

* see rule book for complete list of approved woofer quantity

 

Midwestspl uses the manufactures size ratings when determining

how many of what size speaker is allowed in each class.

 

1-160 square inches

161-250 square inches

251-500 square inches

501-750 square inches

750-1075 square inches

 

Basic 1	Basic 2	Basic 3	Advanced 1	Advanced 2
Xtreme 1	Kaos 1		Xtreme 3	Kaos 3

 

	8	10	12	13	15	16	18	21	24
1	50.24	78.5	113.04	132.665	176.62	200.96	254.34	346.185	452.16
2	100.48	157.0	226.08	265.33	352.94	401.92	508.68	692.37	904.32
3	150.72	235.5	339.12	397.995	529.56	602.88	763.02	1038.5	1356.48
4	200.96	314.0	452.16	530.66	706.18	803.84	1017.36
5	251.2	392.5	565.2	663.325	882.8	1004.8	1271.7
6	301.44	471.0	678.24	795.99	1059.42	1205.76	1526.04
7	351.68	549.5	791.28	928.655	1236.04	1406.72
8	401.92	628.0	904.32	1061.32	1412.66	1607.68
9	452.16	706.5	1017.36	1193.985
10	502.45	785.0	1130.4	1326.65
11	552.64	863.5	1243.44	1459.315
12	602.88	942.0	1356.48
13	653.12	1020.5	1469.52
14	703.36	1099.0	1582.56
15	753.6	1177.5
16	803.84	1256.0