Pioneer Elite vsx-14 enough for hdi-3800? Alternatives?

I got these setup today with the vsx-14. The added detail is really nice! I am feeling like I'm missing low end I had with the Technics for some reason. I have the bass eq turned way up and the treble down and still seem to be a little overwhelmed with high end.

Is it possible that this is the amp not providing enough power to get the low end I'm looking for?

Your jbls are very sensitive at 92db and shouldn't need a lot of power. Otoh they're rated to go down only to 37hz, which isn't super-low, so it may be they're just not as bass as their predecessor. Synergy is critical, however, so you could very likely get different results with another amp, tho you could also add a sub.

The Technics are rated to go down to 38hz, so spec wise, not too different. I'm pretty surprised that I am finding these speakers thin, based on reviews like these (https://www.audioholics.com/tower-speaker-reviews/jbl-hdi-3800) they should have relatively powerful bass. I even have them close to a wall so I expected  to be working against it being overpowering.

Is there something else I am possibly doing wrong or are my expectations for these speakers just off?
 

@szejna, i'm no tech wizard but i do know that frequency response measurement is an imperfect science and that other factors like dispersion, and dynamic range could make two similarly-spec'd speakers sound very different. i was curious enough to read some online reviews (e.g. audiosciencereview) of your jbls, some of which suggest that for low bass they would benefit from a sub--again, you might get better results with a different amp, so i wouldn't hesitate to experiment.

I even have them close to a wall so I expected to be working against it being overpowering.

Is there something else I am possibly doing wrong or are my expectations for these speakers just off?

Several things to ponder...

1. Cabinet size  2. Sensitivity 3. Bass extension/impact....pick 2 (can’t have all 3)

Further, you are most probably sitting right on top of a couple of modal nulls (especially widthwise). So, even if it produced some bass, you didn't hear it. Get a subwoofer... if correctly placed/integrated, it will fix the nulls and provide the bass extension/impact that the speaker sacrificed for sensitivity and a non-refrigerator sized higher WAF cabinet.

P.S.  Older multichannel receivers never have the poweramp sections for good bass. There is also a chance that a failing dcomponent can kill the bass.

The following is a legit thing that can happen in aging amps/receivers. It will appear to work fine otherwise.

Bass issue