I've confirmed the 600v4 goes as low as the 800v4 in my room. They both start moving at 1 Hz but don't really get going until 10 Hz. I'd say 1 is the very useful start of the range but some may say even lower.

The HP drivers on the active LFR1100s also keep up right at 1 Hz on up.

Nothing to sneer at that's for sure.

Edit: When I turn on all 5 sealed subs, no one would argue that infrasonics down to 2 Hz are usable. No one would argue because they can feel the ripples at the supplied frequency. LOL!

Last edited by Mojo; 11/11/20 05:53 PM.
House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated