Untitled Document

Click a logo below to view rules

dB Drag Racing Class Matrix Reference

Class	Normal Use	Woofer Qty
Street A	Everywhere	1-3*
Street B	Everywhere	1-4*
Street C	Everywhere	1-8*
Street Max	B-Pillar Forward	1-4
Super Street NW	B-Pillar Forward	Unlimited
Super Street 1-2	B-Pillar Forward	1-2
Super Street 3-4	B-Pillar Forward	3-4
Super Street 5+	B-Pillar Forward	5+
Extreme 1	Exempt	1
Extreme 2	Exempt	2
Extreme 3+	Exempt	3+

Class	Max Conductors	Max Amps
Street A	2 Total	1
Street B	2 Total	1*
Street C	4 Total	2*
Street Max	4 Total	2*
Super Street NW	8 Total*	4*
Super Street 1-2	4 per sub	Unlimited
Super Street 3-4	4 per sub	Unlimited
Super Street 5+	4 per sub	Unlimited
Extreme 1	4 per sub	Unlimited
Extreme 2	4 per sub	Unlimited
Extreme 3+	4 per sub	Unlimited

Class	Battery Qty	Battery Size	Capacitor Qty
Street A	1	Standard 650 in^3	1F
Street B	1	Standard 800 in^3	1F
Street C	2	Standard 800 in^3	2F
Street Max	1	800 in^3	1F
Super Street NW	Unlimited	Unlimited	Unlimited
Super Street 1-2	Unlimited	Unlimited	Unlimited
Super Street 3-4	Unlimited	Unlimited	Unlimited
Super Street 5+	Unlimited	Unlimited	Unlimited
Extreme 1	Unlimited	Unlimited	Unlimited
Extreme 2	Unlimited	Unlimited	Unlimited
Extreme 3+	Unlimited	Unlimited	Unlimited

Class	Alternator Qty	Max Volts
Street A	-	12 (14 Max)
Street B	-	12 (14 Max)
Street C	-	12 (14 Max)
Street Max	-	12 (14 Max)
Super Street NW	2	16 (18 Max)
Super Street 1-2	2	18 Max
Super Street 3-4	2	18 Max
Super Street 5+	2	18 Max
Extreme 1	Unlimited	18 Max
Extreme 2	Unlimited	18 Max
Extreme 3+	Unlimited	18 Max

Class Matrix Notes

Street Division

Street A – 1-12 or 2-10’s or 3-8’s / Maximum of 1 amp – 2 Conductors total between amp rack and sub enclosure
Street B – 1-15 or 2-12’s or 3-10’s or 4-8’s / Maximum of 1 amp (or 2 monoblock amplifiers) – 2 Conductors total between amp rack and sub enclosure
Street C – 1-18 or 2-15’s or 4-12’s or 6-10’s or 8-8's / Maximum of 2 amps (or 4 monoblock amplifiers) – 4 Conductors total between amp rack and sub enclosure

Street Max Class

Maximum of 2 amps (or 4 monoblock amplifiers) – 4 Conductors total between amp rack and sub enclosure

Super Street NW Class

Maximum of 4 amps (or 8 monoblock amplifiers) - 8 Conductors total between amp rack and sub enclosure. Maximum 4 conductors per sub

Glossary of Terms

Alts – Number of alternators permitted
Amateur - Anyone who is not a "Pro" (see below)
Amps – Maximum number of physical amplifiers permitted
Battery Box – Battery box permitted
Battery Qty – Maximum number of batteries permitted
Battery Size – Physical size limits for each battery in cubic inches
Caps – Number of Farads permitted
Maximum Conductors – Maximum number of electrical conductors between the amplifier(s) and the sub enclosure. A normal speaker wire is composed of two conductors; 1 for positive and 1 for negative.
Normal Use – Normal use restriction applies
Podium – Podium use permitted
Power - When amplifier power limits are specified, the dBDRA will use the maximum published RMS rating for the amplifier. The dBDRA reserves the right to verify the accuracy of any published rating.
Pro - Anyone who is employed in the auto sound industry. Anyone who is sponsored by someone in the auto sound industry. Anyone who is related to someone in the auto sound industry. Anyone who has competed as a pro in the past.
Run – Vehicle may be running during competition
Standard Battery – 12-volt, 6-cell (connected in series), lead-acid or gel-type battery.
Vehicle Mods – Structural vehicle modifications permitted
Veteran - A contestant who has finished any preceeding season with a "Top 3" Certified Score ranking or who has participated in any previous World Finals.
Volts – Battery voltage (value in parenthesis indicates maximum voltage in the lanes)
Walls – Walls are permitted
Woofers – Number of woofers allowed