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 U.K. has a few different
SPL Formats.

All these formats offer something different to what pd does.

All these formats have their own groups of 
loyal competitors, some of which try out other formats as well.

So the aim of this section is to draw attention to the SPL formats that are available for us U.K. BASSHEADS to take part in.

You want to BOOM?...
...Then get to one of these Sound-Off events.