Foamrite bass traps - any info on their ability to absorb LF?

[Now Playing]

Can't find diddly the web, though they claim 'Our highly affordable Bass Traps will almost completely eliminate any problems associated with low-frequency sound waves in those tricky areas of a room.'

 

[Timber_MG]

 

[Timber_MG]

 

[Tourist]

 

[Timber_MG]

 

[Phase]

 

[Rodney_gold]

 

[windshear]

 

[Timber_MG]

 

[vdL]