Bookshelves

LS3/5A's embody the soul of your request. They don't get better than this, that is why they are still popular 30 years latter! I've been responsible for a lot of friends buying them over the years, and most still have them, and just love them. BTW, I think the Rogers and Spendors were best at what you are looking for. Some of the latter ones started to 'enhance' the FR and some actually use different drivers, they are really nothing more than LS3/5a look alikes, not sound alikes.

Great history guys!

OP has asked about the bass bump. Here is my version of how you hear it. Boomy bass (down in the 60hz range) is not something the LS3/5a can do. The bump, as I recall centered somewhere around 125hz does add something to the speakers sense of warmth and imitates what a full range speaker might sound like so long as the actual musical information was not in the mid/deep bass. Keeps the speaker from sounding either cold or clinical as so many otherwise excellent speakers can when they start to roll off around 100hz. That is why I love these little devils...It is, IMHO, a great compromise. And no, they are not meant to be placed on a bookself, although some of my non-audiophile friends do and haven't complained. But I think you might hear the unwanted bass boost caused by close wall placement in these speakers, but perhaps most any others.

If you really do want a bass-less (so to speak) speaker there was one that has come on and off the market over the years - I'm trying to remember the guys name who designed it, but it escapes me. The speaker was I believe known as the Met 7. A remarkable little, sealed as I recall, speaker. I had a pair for some years and used them in a second system with a sub. They were not overly expensive. If that interests you perhaps a little reasearch would flush it out. BTW the manufacturer went on to make a SOTA tuner, if that would help in the search.

PS I just recalled - the designer/builder was Richard Sequerra. I pulled them up on Google when I asked for Met 7.