by smoker » Tue Nov 14, 2006 1:10 pm
2006 Street Division Rules
STREET – Intended as the entry point for serious competitors. Vehicles are still intended to be daily drivers, and not SPL specifi c.
5 Street Division “Pressure Classes”
S1 0 - 500
S2 501 - 750
S3 751 - 1200
S4 1201 - 2000
S5 2001 - 4000
A. Vehicle/Owner Requirements
1. Owner/member must sit in the driver’s seat if they are in the vehicle during the pass.
2. Rear deck must maintain factory appearance, have no holes and must have some type of upholstery/covering .
3. Glove box must be closed during pass.
B. Judging Criteria
1. Any combination of open driver and/or passenger doors and or windows is allowed. Trunks, hoods, rear compartments and hatchbacks must be closed
completely during testing.
2. Peak frequency must not exceed 100 Hz, as determined by the TermLab system.
C. Sensor Placement
1. In addition to the General Rules, sensor placement will be restricted to under dashboard, on passenger side of vehicle only.
2. Sensor will be placed in the standard position, dead center, straight away, unless the competitor specifi es a location in the passenger’s fl oorboard to the
Judge prior to the Judge placing the sensor.
D. System Requirements
1. No modifi cations to the front of vehicle with the intent to increase sound pressure level score. Only aftermarket rubberized/asphalt type sound deadening
materials may be used through-out the vehicle, 2 layers maximum.
2. Spray foam, resins, duct tape, or any similar materials used to increase sound pressure score may only be used in the vehicle’s cargo area.
3. Dash modifi cations are limited to mounting of: automotive gauges (i.e., tach or voltage gauge), video system components (i.e., screen(s), DVD player, game
console) and/or mounting front stage speakers for SQL applications.
4. Dash may only be recovered with a cloth type material. Painting to match a color scheme of the vehicle will also be allowed.
5. No podiums allowed, however, head unit may be held outside the vehicle.
6. Enclosure must be mounted behind rear seat. No portion of the enclosure may rest on the rear seat while in the fold down position.
7. Rear vision must not be blocked. Top of the enclosure must be no higher than the top of the seats. A headrest is not considered part of the seat. When the
headrest is molded into the seat, the top is considered the spot where there is a visible difference between the seat and headrest.
8. Pickup trucks: enclosure must not be higher than the bottom of the back window seal. All equipment, excluding batteries, must be mounted in the cab of
the truck.
a. Standard cab trucks: enclosure must fi t behind seat in the most forward position.
b. Extended cab trucks, including trucks with 3rd or 4th door options: enclosure cannot extend past front door jambs, but, factory jump seats may be removed.
c. Quad/Crew cab pickups, with 4 full size doors: the back seat must stay in, but enclosure may sit in seat.
9. All 2 seat non-trunk vehicles: enclosure must be no higher than the bottom of the rear side glass but may not exceed 24” and must be no more than 26”
from the center at the top of the rear door plastic panel. Plastic side panels may not be removed.
10. Seats cannot be removed but rear seats may be folded down provided they are factory designed to do so, and can be returned to a latched position after
pass without movement of enclosure or equipment.
11. If the vehicle is not equipped with factory folding rear seats, then the rear seat back may be unbolted and laid down on the rear seat bottom as to approximate
the design of factory folding seats. Rear seat back must be able to placed back in the original factory position at the conclusion of pass without moving
the enclosure or equipment.
12. Upgraded electrical and charging system allowed, however, vehicle is restricted to only one (1) alternator.
13. Capacitors are allowed. Capacitance limited to 50 Farads total.
14. In addition to the vehicle’s primary battery, S1 is permitted one (1) extra battery. S2 may have two (2) extra batteries, S3 may have three (3) extra batteries,
S4 may have four (4) extra batteries, and S5 may have fi ve (5) extra batteries.
15. 12 volt batteries only, in parallel, are permitted. Group 8D batteries are counted as two (2) batteries and Xstatic Model 8400s are counted as three (3) batteries.
16. Primary battery may be relocated. All batteries must be securely mounted, and must be located either under the hood and/or in the trunk/hatch/cargo
area only. Pick-up trucks may mount batteries in the bed provided they are covered and protected.
- Some unique situations may arise that disqualify vehicle, system, and/or competitor from Steet Division, determined by
MECA Judges.
2006 Street Division Rules
STREET – Intended as the entry point for serious competitors. Vehicles are still intended to be daily drivers, and not SPL specifi c.
5 Street Division “Pressure Classes”
S1 0 - 500
S2 501 - 750
S3 751 - 1200
S4 1201 - 2000
S5 2001 - 4000
A. Vehicle/Owner Requirements
1. Owner/member must sit in the driver’s seat if they are in the vehicle during the pass.
2. Rear deck must maintain factory appearance, have no holes and must have some type of upholstery/covering .
3. Glove box must be closed during pass.
B. Judging Criteria
1. Any combination of open driver and/or passenger doors and or windows is allowed. Trunks, hoods, rear compartments and hatchbacks must be closed
completely during testing.
2. Peak frequency must not exceed 100 Hz, as determined by the TermLab system.
C. Sensor Placement
1. In addition to the General Rules, sensor placement will be restricted to under dashboard, on passenger side of vehicle only.
2. Sensor will be placed in the standard position, dead center, straight away, unless the competitor specifi es a location in the passenger’s fl oorboard to the
Judge prior to the Judge placing the sensor.
D. System Requirements
1. No modifi cations to the front of vehicle with the intent to increase sound pressure level score. Only aftermarket rubberized/asphalt type sound deadening
materials may be used through-out the vehicle, 2 layers maximum.
2. Spray foam, resins, duct tape, or any similar materials used to increase sound pressure score may only be used in the vehicle’s cargo area.
3. Dash modifi cations are limited to mounting of: automotive gauges (i.e., tach or voltage gauge), video system components (i.e., screen(s), DVD player, game
console) and/or mounting front stage speakers for SQL applications.
4. Dash may only be recovered with a cloth type material. Painting to match a color scheme of the vehicle will also be allowed.
5. No podiums allowed, however, head unit may be held outside the vehicle.
6. Enclosure must be mounted behind rear seat. No portion of the enclosure may rest on the rear seat while in the fold down position.
7. Rear vision must not be blocked. Top of the enclosure must be no higher than the top of the seats. A headrest is not considered part of the seat. When the
headrest is molded into the seat, the top is considered the spot where there is a visible difference between the seat and headrest.
8. Pickup trucks: enclosure must not be higher than the bottom of the back window seal. All equipment, excluding batteries, must be mounted in the cab of
the truck.
a. Standard cab trucks: enclosure must fi t behind seat in the most forward position.
b. Extended cab trucks, including trucks with 3rd or 4th door options: enclosure cannot extend past front door jambs, but, factory jump seats may be removed.
c. Quad/Crew cab pickups, with 4 full size doors: the back seat must stay in, but enclosure may sit in seat.
9. All 2 seat non-trunk vehicles: enclosure must be no higher than the bottom of the rear side glass but may not exceed 24” and must be no more than 26”
from the center at the top of the rear door plastic panel. Plastic side panels may not be removed.
10. Seats cannot be removed but rear seats may be folded down provided they are factory designed to do so, and can be returned to a latched position after
pass without movement of enclosure or equipment.
11. If the vehicle is not equipped with factory folding rear seats, then the rear seat back may be unbolted and laid down on the rear seat bottom as to approximate
the design of factory folding seats. Rear seat back must be able to placed back in the original factory position at the conclusion of pass without moving
the enclosure or equipment.
12. Upgraded electrical and charging system allowed, however, vehicle is restricted to only one (1) alternator.
13. Capacitors are allowed. Capacitance limited to 50 Farads total.
14. In addition to the vehicle’s primary battery, S1 is permitted one (1) extra battery. S2 may have two (2) extra batteries, S3 may have three (3) extra batteries,
S4 may have four (4) extra batteries, and S5 may have fi ve (5) extra batteries.
15. 12 volt batteries only, in parallel, are permitted. Group 8D batteries are counted as two (2) batteries and Xstatic Model 8400s are counted as three (3) batteries.
16. Primary battery may be relocated. All batteries must be securely mounted, and must be located either under the hood and/or in the trunk/hatch/cargo
area only. Pick-up trucks may mount batteries in the bed provided they are covered and protected.
- Some unique situations may arise that disqualify vehicle, system, and/or competitor from Steet Division, determined by
MECA Judges.