The current introductory sale price of Mt. Rainier speakers is well in your budget. Rainier is more directional speaker and less dependent to a room acoustics. So, "the opening to another room on the left" will not be problem. 20x20x10 is a perfect size for Mt. Rainier speakers to sing.
Agon Mt. Rainier ad.
Alex / Wavetouch
Agon Mt. Rainier ad.
Alex / Wavetouch