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" 
Bass Race is a great SPL format which has been born under the wing of dB drag

The beauty of this format is that it doesn`t matter what type of system you have.

IT`S ALL DOWN TO GOOD VOLUME CONTROL!

A BOOT system has as much chance as winning as a WALLED system.

Both systems have to play music for 30 Sec`s.
One system has to be louder than the other. BUT!!!  there is a dB limit category.
Go over the dB limit and you are OUT!!!

A great, different and very exiting SPL event.
Usually run alongside dB drag SPL.