SPL Testing @ Ultra Low Frequencies                  Testing your car audio system  at its Peak SPL and at four set frequencies of  40Hz   33Hz   25Hz   20Hz  ////////////   The pd SPL format started booming in the U.K. in 2008.  Created by Marcos H Barnes A.K.A. Mega Heavy Bass. A former SPL competitor.//////////  dB readings are taken from the vehicles Head Rest    The doors and windows are allowed to be opened.   Like to know more?       ...Then please feel free to browse this site.       Thank You For Your Interest.           Copyright © 2011 by "Marcos H Barnes"
Copyright © 2011 by "Marcos H Barnes" 
The EMMA Sound Pressure League is made for those kinds of competitors who are (also) interested in the maximum level of volume in their cars, not forgetting about a safe installation and a neat looking appearance.

The challenge is to reproduce high sound Pressure levels in nice designed cars with quality installations.

For EMMA Racing, the car is looked at as an entire project.

Sound quality and high sound Pressure levels but also tuning, looks, and racing capabilities are challenged during an EMMA Racing Event.