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"
The Underated JBL GT5.
O.K. its not going to win any awards for SQ.

But @ only £25 or so for a 10"
There is not any other make of subwoofer that can seem to perform as well as these, for so little money.

Lots of pd members use the GT5 Series.
You`ll find loads if installs within the TOP 10 Loudest which use these subwoofers.

One install that really pushed these to their limits was Jameseys NO-WALL set up which, with 4x 10" subs and only 3.6k managed to hit over 150dB @ every pd frequency!!!
Brand "X" Subwoofers
Digital Designs Subwoofers
Ascendant Audio Subwoofers
DC Sounds Subwoofers
Earthquake Subwoofers
HCCA Subwoofers
Copyright © 2011 by "Marcos H Barnes"