What Audyssey does based on small signal levels is not relevant to how the speakers perform and sound on material with a lot of dynamic range (home theater, nice jazz or orchestral recordings) and pleasant listening levels.
Granted the Integra is going to have a beefier power supply than the lower end Denon but 120 Hz seems high given this OPs results.
SPL from a monopole operating into free space is
102.4 + 20 log(displacement) + 40 log(f) - 20 log(distance) with displacement in m^3, f in hz, and distance in meters.
Or use 102.4 + 20log(travel) + 20 log(area) - 20 log(distance) with travel in meters an area in meters^2. Same thing.
A 16cm (6.25 - 6.5" depending on how you round) driver with 94 cm^2 Sd (the mathematically observant will note that 94 cm^2 is the area of an 11cm circle, not 16cm. This is because cone driver sizes come from the basket diameter and not the cone) and 7mm xmax will reach 71dB @ 20Hz, 83dB @ 40Hz, 95dB @ 80Hz, 102dB @ 120Hz.
A more typical 4mm xmax will reduce output by 4.9dB netting about 66dB @ 20Hz, 78dB @ 40Hz, 90dB @ 80Hz, and 97dB @ 120Hz.
While SPLs don't drop with distance as severely in domestic listening spaces (Floyd Toole suggests 3dB/distance doubling) as they do out doors and in theory (6dB/doubling) you're till looking at 4-6dB to get 8-12 feet away.
That can get your typical 16cm driver down to 60dB of usable output at 20Hz, 72dB @ 40Hz, 84dB @ 80Hz, and 91dB @ 120Hz.
Add 6dB back for a pair of drivers.
Add 3dB for a 17cm driver with 136 cm^2 Sd.
Reference level screen channel peaks are 101-105dB at the seats and playback with dialog at a conversational 60-65dB is still going to net 87-96dB. Nice jazz recordings at a pleasant 85dB are going to peak at up to 105dB at the seats. IOW, with such small speakers you're likely to run them beyond where they're linear at which point they sound bad and perhaps to their mechanical limits where they sound worse and can even suffer physical damage. With excursion quadrupling for each lower octave this becomes increasingly likely with lower cross-over points.
In ported speakers most of the output is from the port with the driver excursion reduced in the last 1/3 octave of their pass-band, but you still need to worry about driver excursion above that point (about 45 Hz for the original poster's speakers assuming their frequency response was rated between the speaker's -3dB frequencies) and once the port unloads below it.