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 2014 by "Marcos H Barnes"
Copyright 2014 by "Marcos H Barnes" 
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Welcome to             The SPL format for Ultra Low Frequency Car Audio systems
BOOT BOOMERS EXTREME:
1: Drew B - Team Ice -/ Total Average Score= 151.20dB
20Hz= 150.20dB / 25Hz= 152.80dB / 33Hz= 152.20dB / 40Hz= 148.40 / Peak= 152.80 @ 25Hz
2: Stuart Jevons- Team Hz Addiction / Total Average Score= 150.00dB
20Hz= 149.90dB / 25Hz= 152.30dB / 33Hz= 148.80dB / 40Hz= 147.30dB / Peak= 152.30 @ 33Hz
3: John Jarrett - Team Waffle / Total Average Score= 149.64dB
5: Drew B - Team ICE -  Total Average Score= 148.02dB
7: Mark Bonfield - 8x JBL GT5 12" / Total Average Score= 147.62dB
20Hz= 146.10dB / 25Hz= 148.90dB / 33Hz= 151.20dB / 40Hz= 150.80dB / Peak= 151.20 @ 33Hz
20Hz= 138.90dB / 25Hz= 146.00dB / 33Hz= 151.20dB / 40Hz= 152.00dB / Peak= 152.00 @ 40Hz
20Hz= 146.20dB / 25Hz= 146.60dB / 33Hz= 147.10dB / 40Hz= 149.10dB / Peak= 149.10 @ 40Hz
8: Daniel Bullman- Team Hz Addiction / Total Average Score= 147.38dB
9: Suraj Sodha- MICE UK  / Total Average Score= 147.30dB
20Hz= 138.60dB / 25Hz= 144.10dB / 33Hz= 151.90dB / 40Hz= 150.40dB / Peak= 151.90 @ 33Hz
20Hz= 148.20dB / 25Hz= 148.60dB / 33Hz= 147.70dB / 40Hz= 143.30dB / Peak= 148.60 @ 25Hz
4: Adam Stark - Bass Heads / Total Average Score= 148.84dB
20Hz= 148.10dB / 25Hz= 150.20dB / 33Hz= 149.20dB / 40Hz= 146.90dB / Peak= 150.20 @ 33Hz
6: Jappa - Grand Cherokee / Total Average Score= 148.00dB
20Hz= 144.60dB / 25Hz= 146.90dB / 33Hz= 150.20dB / 40Hz= 148.10dB / Peak= 150.20 @ 33Hz
20Hz= 145.80dB / 25Hz= 146.50dB / 33Hz= 146.70dB / 40Hz= 148.20dB / Peak= 148.20@ 40Hz
10: Bass Jams-  Total Average Score= 147.10dB