Vandersteen 2ce questions

Vandersteen speakers are sensitive to amplifiers especially in the bass department. It's not so much the amount of power as it is the quality of the power. The best bass I ever heard from Vandersteens was from a high quality 60 watt solid state power amp. Maybe your NAD isn't up to the task.

Indeed, use a test CD/tracks to check if the wiring is correct.

Jamo E855 with their dual active woofers / speaker (is it bass reflex?) should have more emphasis on bass vs the Vandersteen 2Ce (one active / one passive).

I still use a pair of Vandy 2Ce in my study and the bass is more than adequate despite their dismal positioning -half hidden away between bookshelves - driven by just a 8W tube amp.

I always found the Vandersteen 2 and 3 series to have good bass extension but not the bass slam you are looking for. While the bass can be maximized, I think the lack of slam is somewhat inherent in their design.

I have seen some folks place speakers on a piece of wood
on top of carpet or wood floor.
This allows the speakers to wobble or absorb the bass instead of let lt go.
Make sure the attached "bases are snug fit onto the speakers finger tight,then one full turn this is easily overlooked"
and confirm "spikes/nuts are all tight."
Make sure the spikes are in the floor or in a pair of Vandy Soft shoes on the wood floor.
"Having at least an area rug in between you and the speakers" avoids the first reflection.

The last room your speakers were set up in probably had floors most likely different than yours are now.
Most floors are never level.
When you get the tilt back set correctly as in the manual
it should change your perception of what you experience, not only in the bass,but also overall performance.
Read the manual Start with a bubble level string plum bob or "washer/string and get the speakers side to side level then do the tilt back."
Take a laser pointer set on top of the speaker inside
wood, aim it on the wall behind where your head was listening chair area.
Get a sharpie pen with a post it note, now draw a circle on the target O where the laser lands.
Next do the same for the other speaker and make sure both speakers have the same tilt landing on the O bulls eye next sit and listen,then slouch down in your chair,then listen sitting on a pillow.
One of the 3 positions will have magic.
Then adjust the final tilt to where your normal seating position is.
Please let us know when you find it.
Cheers JohnnyR

I owned 2ce Sigs, 3a's & 3a Sigs, all very nice speakers. I used them with a number of different amps, McCormack, NuForce, Musical Fidelity, Belles. While the bass is deep, I always felt they were lacking in "slam"/dynamics. As much as I liked the Vandersteens, in order to get the slam I was looking for, I ended up going with a different speaker.