JBL 4429, deep bass ?

People often use the term "deep bass" when what they really mean is a speaker with a high midbass output. Juke boxes are a good example. Tons of midbass, but no real low bass. But people love jukeboxes. They’d probably be happier with one than their current hifi system.

JBL 4429 and "deep bass" don't belong in the same sentence. I worked at an audio store in SoCal several years ago, and after playing some test and demonstration records through the typical JBL formula--horn plus oversized ported woofer, the frequency sweeps clearly showed that these big 12" and 15" woofers were starting to roll off at 100 Hz, which would explain why they're down 6 dB at 40 Hz.

Most of the perceived bass on this design is overtones. It's mostly midbass thump with little true extension. It sounds impressive on '70s rock and pop, but less so with deep synth tones, and the constant barrage of high frequency sizzle, blaring midrange, and upper bass thump gets fatiguing, even on the music it does fairly well.

And acoustic classical music easily shows its shortcomings.

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.