MECA includes several formats and awards including Sound Quality, MECA Kids, Phat awards and more. We will be focusing on the SPL formats Sound Pressure and Park & Pound.  Please refer to the rulebook and for full classing and rules. 

MECA Rulebook:

Competitors must provide access to all speaker wires for inspection and measurement. Clamp measurements should be taken no
closer than 12” from the amplifier(s) to minimize interference from stray electrical fields from the amplifier’s output stage.

Peak frequency must not be above 100 Hz, as determined by the TermLab Magnum system.

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SP (Sound Pressure)

Sensor placed at the headrest (26” High in the Driver’s Seat). on MECA approved stand or holder, provided by Judge. The seat and seat back of the seat that the sensor stand is placed in must be in a factory locked position and must allow the stand to sit flat on the seat
bottom. The stand may not be leaned forward. Pass is timed for 30 seconds with TermLab scoring system set to “Peak Hold”

Trunk (T1, T2)
The Trunk Division, with 2 “Pressure Classes”, is intended for vehicles with systems installed in the Trunk.
Street (S1, S2, S3, S4, S5)
The Street Division, with 5 “Pressure Classes”, is intended for competitors with some vehicle and system modifications allowed. Vehicles are still
intended to be daily drivers, must have a functional OEM backseat, and not SPL specific.
Modified Street (MS1, MS2, MS3, MS4)
Modified Street has 4 “Pressure Classes” and is intended for vehicles which do not have back seats, have no-wall builds, or other
installations which are done to the B-pillars. System and/or box height is no more than 12” measured from the ceiling to the tallest point of the box
behind the B-pillars. Anything attached to the enclosure is considered part of the enclosure, including speaker surrounds, electronics including
amplifiers, speaker pods, etc.
Modified (M1, M2, M3, M4, M5)
The Modified Division, with 5 “Pressure Classes”, is intended for vehicles and systems that are designed to maximize sound pressure level, including
woofer walls and pickup truck cut-throughs, but are still capable of being daily drivers. M1, M2, and M3 are restricted to vehicles that have
non-permanent modifications behind the B-pillars. M4 and M5 allow for limited modifications in front of the B-pillars as well as structural, chassis,
and/or body modifications behind the B-pillars and, although they may be able to be driven daily, are designed strictly with SPL competition in mind.
Radical X (XTC, X)
The “Radical X” Division, has 2 classes (one clamped class with maximum of 4000 pressure rating and one unlimited) for extremely modified
exhibition systems/vehicles, is intended for hard-core SPL Competitors with unusual or concept vehicles. Any combination of open/closed doors or
hatches is acceptable, and sensor may be placed anywhere inside the vehicle, except not within 12” of any port.

“Park & Pound” (DB1, DB2, DB3, DB4, DB5)

The “Park & Pound” Format, with 5 “Pressure Classes”, is intended to measure sound pressure levels outside the vehicle, while playing full-range
music. In addition to the General Rules, sensor will be placed 72” (6’) from the outside edge of a marker on the ground (usually a
cone), on passenger side of the vehicle; 54” (4.5’) off the ground on MECA approved stand.  Final score is “Average” for 30 seconds.


Sound Quality League Dueling Demos contest is intended to recognize the strongest music systems with regard to power, clarity, tonal balance, and intensity. Vehicles go head-to-head to demonstrate the most impressive audio systems.


Vehicles required to have some form of a plexiglass plate or surface that the suction cups on the TermLab sensor can attach. Mic placement should be no closer than 4 inches from the port or woofer. Also sensor must face forward.


45 Total Points in each Sound Pressure and Park & Pound class in the Sound Pressure League earn National Points Champion eligibility for each
class and World Finals Soundfest invitation.

1X Single Point Event – 1st through 5th places awarded points. 1st = 5 pts, 2nd = 4 pts, 3rd = 3 pts, 4th = 2 pts, 5th = 1 pt

2X Double Points Event – 1st through 5th places awarded points. 1st = 10 pts, 2nd = 8 pts, 3rd = 6 pts, 4th = 4 pts, 5th = 2 pts

3X Triple Points Event-SOUNDFEST- 1st through 5th places awarded points. 1st = 15 pts, 2nd = 12 pts, 3rd = 9 pts, 4th = 6 pts, 5th = 3 pts

For upcoming SPL shows CLICK HERE