Soundstage and explosive dynamics?

RCA shearer horn system you may have to do a bit of set up but you can buy the parts for about 10k

Focal Utopia should do it. There is one here for sale for about $12k, you could probably have it for $10k. It can sound a little bright with some solid state equipment and wrong cables.

A large room and a beefy (pro audio) power amp are other parts of the equation, of course.

willemj

A large room and a beefy (pro audio) power amp are other parts of the equation, of course.

I disagree. Professional amplifiers often rely on fans, which help lower cost, increase available power and pose no problem in most professional settings. But the noise of those same fans often intrudes in a quiet domestic environment. It's usually worth the cost to use an amplifier intended for home use, which would typically rely on heatsinks for cooling rather than a noisy fan.

Agree with Shadorne recommendations and also add PMC. For a couple of under the radar choices, consider the Volti Audio Rival and a couple of the offerings from Duke Lejune of Audiokinesis. They would include Prisma, Zephryn 46, and the newest model Azel. Duke’s speakers sound terrific and he is one of the good guys in audio. You could check out Seaton Sound as well. A word of caution, though. I approached them both 4 years ago and again 3 years ago at Axpona about how inadequate their website was in checking different models specs, etc.. They agreed and I was told both times it would be up to speed soon. Looking at their site today, I can see that it is still incomplete. It would be up to you if you would want to pursue them given that red flag, but they do check the boxes that you want checked. They are also active speakers with DSP. Very dynamic speakers. When looking for speakers with explosive dynamics and ease, there is no replacement for displacement IMO.