EMMA Sound Pressure League
Measurement closed:
The first measurement will be with the doors closed – a minimum 30 seconds of music will be played.
Within this measurement, the peak SPL will be measured. Within the next 2 minutes a second measurement will follow:
Measurement open:
The second measurement will be done with both front doors completely open – a minimum 30 seconds of music will be played with the same track as in the first measurement. Within this measurement, the average SPL will be measured.
ESPL Categories:
- ESPL Trunk €1000
- value of Subwoofers + Amplifiers = 1.000€
- no professionals, no judges/EMMA officials
- only one battery in the OEM-location allowed
- Max 16 woofer see matrix on page 14
- ESPL Trunk- 1 Woofer
- ESPL Trunk- 2 Woofer
- ESPL Trunk- 4 Woofer
Installation:
- Moderate installation requirements see matrix on page 15
Restrictions on all Trunk classes:
- The subwoofers including enclosure ports etc must be within the trunk compartment
- Max 16 woofer see matrix on page 15
- No voltage above 14.6 Volts
- ESPL B / R- limited
- Enclosure from B pillar and no higher than original rear seat (not including head rests)
- Or behind original rear seats to top
Installation:
- Moderate installation requirements see matrix on page 15
Restrictions:
- No voltage above 14.6 Volts
- Max 16 woofer see matrix on page 15
- ESPL Wall – limited
Installation:
- Moderate installation requirements see matrix on page 15
Restrictions:
- No voltage above 14.6
- Max 16 woofer see matrix on page 15
- The subwoofers including enclosure ports etc must be behind the OEM B pillar the enclosure can reach up to the roof of the car
- ESPL Expert
Installation:
- Extreme installation is appreciated and beneficial see matrix on page 15
Restrictions:
- The subwoofers including enclosure ports etc must be behind the OEM B pillar the enclosure can reach up to the roof of the car
Matrix ESPL | |||
T / R /B / W | Expert | ||
112+ | 122+ | ||
Measurement with open doors | |||
Measurement with closed doors | |||
Install Max. points | 112 | 122 | |
Presentation to the public | 10 | 10 | |
Cleanliness | 6 | 6 | |
Main fuse(s) present y/n | 10 | 10 | |
Are all wires to the components fused? | 15 | 15 | |
Is the fuse value appropriate to the wire size? | 20 | 20 | |
Any interior wires visible? | 5 | 5 | |
Are all components securely mounted? | 24 | 24 | |
Does the vehicle allow a normal use? | 6 | 6 | |
Visibility | 6 | 6 | |
First Optic impression | 10 | 10 | |
Overall design of vehicle | 10 |
Subwoofer Matrix | |||||
Subwoofer size | Trunk | Trunk | Trunk | B/R, Wall | |
1 Woofer | 2 Woofers | 4 Woofers | 16 Woofers | ||
6,5″ | 2 | 4 | 8 | 32 | |
8″ | 1 | 3 | 6 | 24 | |
10″ | 1 | 2 | 4 | 16 | |
12″ | – | 1 | 2 | 8 | |
15″ | – | – | 1 | 5 | |
18″ | – | – | 1 | 4 | |
21″ | – | – | – | 2 | |
33″ | – | – | – | 1 |