Check out Bela Fleck & the Flecktones "Flight of the Cosmic Hippo" on cd. Track 4 "flight of the cosmic hippo" will give your subwoofer a good workout. It's a great album by the way. Some great banjo playing on this ceedee.
When I put on Michael Hedges' album called Aerial Boundaries Side 1 Track 1, in the first few seconds I can see the woofers moving with high amplitude about 10Hz+ (?) but hear nothing. Maybe it is under my lower hearing limit??
"Did you have a good world when you died? Enough to base a movie on?"
I remember being in Liverpool Cathedral when someone was 'tuning' the organ. I thought then how low the notes were, but to my amazement, it went an octave lower than I first heard, must have been down to <20Hz.
'Orinoco flow' (Enya?) has some nice low notes.
kind regards, Cats there are many churches, few are full.....