Class Matrix

Midwestspl uses the manufactures size ratings when determining how many of what size speaker is allowed in each class.

ClassNo ModsWallsSpeakersPowerMax VoltageMusic/ ToneTimeAverage/ Peak
MSD 1B-Pillar ForwardYesup to 1-12, 2-10's or 3-8'sUnlimited15.5Music30 SecondsPeak
MSD 2B-Pillar ForwardYesup to 1-15, 2-12, or 3-10'sUnlimited15.5Music30 SecondsPeak
MSD 3B-Pillar ForwardYes1-24, 1-21, 1-18, 2-15 or 4-12'sUnlimited15.5Music30 SecondsPeak
MSD 4B-Pillar ForwardYesOpenUnlimited15.5Music30 SecondsPeak
Basic 1Passenger CompartmentNoup to 1-15, 2-12, or 3-10's1000 Watts15.5Any30 SecondsPeak
Basic 2Passenger CompartmentNo1-24, 1-21, 1-18, 2-15 or 4-12's2000 Watts15.5Any30 SecondsPeak
Basic 3Passenger CompartmentNoUnlimited4000 Watts15.5Any30 SecondsPeak
Basic 4Passenger CompartmentNoUnlimited8000 Watts15.5Any30 SecondsPeak
Basic TrunkPassenger CompartmentNoUnlimited2000 Watts15.5Any30 SecondsPeak
Advanced No WallB-Pillar ForwardNoUnlimitedUnlimited15.5Any30 SecondsPeak
Advanced 1B-Pillar ForwardYes1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakers4000 Watts15.5Any30 SecondsPeak
Advanced 2B-Pillar ForwardYes2-24's, 3-21's, 4-18's, 6-15's, 9-12's* speakers8000 Watts15.5Any30 SecondsPeak
Advanced 3B-Pillar ForwardYesUnlimitedUnlimited15.5Any30 SecondsPeak
Advanced CC-Pillar ForwardYes1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakers4000 Watts15.5Any30 SecondsPeak
Xtreme 1Passenger CompartmentNoup to 1-15, 2-12's, 3-10's, 4-8's* SpeakersUnlimited15.5Music30 SecondsAverage
Xtreme 2Passenger CompartmentNoUnlimitedUnlimited15.5Music30 SecondsAverage
Xtreme 3B-Pillar ForwardYes1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakersUnlimited15.5Music30 SecondsAverage
Xtreme 4B-Pillar ForwardYesUnlimitedUnlimited15.5Music30 SecondsAverage
Kaos 1Passenger CompartmentNoup to 1-15, 2-12's, 3-10's, 4-8's* SpeakersUnlimited15.5Music1 1/2 MinutesAverage
Kaos 2Passenger CompartmentNoUnlimitedUnlimited15.5Music1 1/2 MinutesAverage
Kaos 3B-Pillar ForwardYes1-24, 2-21's, 2-18's, 4-15's, 6-12's* speakersUnlimited15.5Music1 1/2 MinutesAverage
Kaos 4B-Pillar ForwardYesUnlimitedUnlimited15.5Music1 1/2 MinutesAverage

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