Large room with low budget for speakers

I have the Volti Audio Rivals in a large room (just over 5K cu. ft.) & they fill it easily at loud volumes w/ maybe 20 tube watt peaks. Sound very good & more like live music than most. They don't have the super extended, pristine high end that only bats will really appreciate but its very clean, a super dynamic, great, spacious & open midrange & a big low end that a good, big woofer can be capable of.  

And, w/ about half of your budget leftover, you can afford a solid retainer for a good divorce attorney should you wife decide the music is simply too loud to stand. 

I'm not sure of the price in dollars, Bowers and Wilkins 802 D4s work well in large rooms.

High end Magnapans.  They can fill any room, and don't cost an arm and a leg.  If you can't afford new, go back a few years.  Even more of a bargain.  Big, enveloping soundstage!  Instruments and voices that sound "as in the room" if speakers positioned correctly through experimentation.

Hard to image these would not work.

Shawarma,

makes it a bit tricky to reply when we don't have the dimensions of your room.

The bigger the room the more powerful amplifier you're going to need.

If you like the sound of them, an ideal speaker for a large room are the Klipsch Horns, 103dB, 8ohms impedance. Purchased used, you'll have lots of money left over to buy good amplification!!!

The nice thing about the used Klipsch Heritage speaker line is this. Years after the initial purchase, and your ears start to critique a short coming in the speaker (they all have them), there are plenty of upgrades for not a ton of money. Check Bob Crites, or Volti Audio for upgrades.

In other words, they maybe lifers.

Enjoy the voyage.