JBL 4429, deep bass ?

FYI, the frequency range of an acoustic base is 40-400hz!  

Update!!  My 4429’s sound even better now...got some anticables involved which are by far the best cables I’ve owned (owned $20k speaker cables).  Coltrane LIVES!!  For the would be audio cognoscenti, they play with greater dynamic freedom, realistic visceral bass, extended non fatigue inducing high’s and wide soundstage the competes and in most cases beats my previous Wilson’s and B&W’s to name just 2.  

Bought the 4429’s a couple of months ago and WOW!!  They are absolutely amazing speakers...so much life and unforced detail.  Bass is actually some of the best I’ve  ever experienced...and I’ve had the big boys from Wilson, B&W, Dynaudio etc...deep, complex and visceral!  Feeding them with Krell 400/4ohms, Yamaha Ref SACD ans using new Transparent Super cables.