which class

I have a reg cab with a blow thru, two 15'', two amps, one alt, and five batterys. I really set it up for a 0 to 1000 mod class but just curious would I be sb4 or 5?

you could do Sb3, Sb4, or Sb5 it would be your choice really 2 15s would be 16 points

SB1
4 Points Maximum 8” Woofer = 1 Point Each
SB2 8 Points Maximum 10” Woofer = 2 Points Each
SB3 16 Points Maximum 12” Woofer = 4 Points Each
SB4 Open, Consumer 15” Woofer = 8 Points Each
SB5 Open, Pros or By Choice 18” Woofer = 16 Points Each

I thought sence I did a blow thru I modified my vehicle and would have to do a upper classs

street beat don't care.

according to the rules it says that interior modifications are limited for the sb3 class

coloradoman wrote:

according to the rules it says that interior modifications are limited for the sb3 class

what they change the rules already?

its says that for all street beat classes

also, Can't run 16 volt batt in SB

I run 12v... I have 4 nothstar 170, one northstar 100, and one optima

can run 16 volts in SB5 only......Batts unlimited....Power unlimited.....onlything that matters is woofer size and quantity

No restriction on bed cut. I run 2-15" Memphis subs in my mini truck with bed cut.

so do u run sb3?

coloradoman wrote:

so do u run sb3?

I run SB3 and SB4 at USACi events and ran SB4 at world finals. You can only run one SB category at finals.

so what excatly do they mean by no interior modifications? I would consider a blow thru interior modification.

USACI oviously doesn't.

that's weird what about isaci or mecca or the other ones

not sure on them,never had any dealings with them.

coloradoman wrote:

so what excatly do they mean by no interior modifications? I would consider a blow thru interior modification.

Here is link to complete rules/guidelines for Street Beat http://caraudioevents.com/Street%20Beat.htm

that still didn't explain interior modifications

coloradoman wrote:

that still didn't explain interior modifications

The few rules to interior mods are defined:
No constructed enclosure or speaker placement that may manipulate the SPL sensor may be placed forward of the “B” pillar.

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

No woofers larger than 8” inches may be forward of the “B” pillars.

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

SB5 is the only class open to any vehicles that use a system voltage higher than 14.7 maximum or utilize multiple alternators.

What other type of mod do you have questions about? Contact Mike Jaffe and he can go over this with you in more detail.

I fiberglassed my doors, b pillers, my a pillers and eventually plan on fiberglassing my dash. in theory the harder surfaces should make the pressure bounce around instead of soaking it up therefore modifing my interior would/should make me read a higher number