Home / Venues / Dallas/Addison Marriott Quorum by the Galleria / Ambassador Ballroom

Ambassador Ballroom at Dallas/Addison Marriott Quorum by the Galleria

Published dimensions

Ambassador Ballroom is 19.5 x 9.1 m (64 x 30 ft), 178 m² (1,911 sq ft), with a 3 m (10 ft) ceiling.

Plan view

LED wall that fits

Under a 3 m ceiling with 1.5 m trim and 0.3 m clearance you get 2 rows of 500 mm tile flown, which is tight; ground-stack or go lower on trim. Along the 19.5 m wall a Absen PL2.5 Plus V2 wall runs 31 x 2 (6200 x 400 px, 484 kg, 9.9 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
Absen KLCOB 0.78	0.78 mm	26 x 3 = 78	15.6 x 1 m	19968 x 1296	351 kg / 774 lb	6.9 kW, 33 A @ 208 V
Absen PL2.5 Plus V2	2.5 mm	31 x 2 = 62	15.5 x 1 m	6200 x 400	484 kg / 1,066 lb	9.9 kW, 48 A @ 208 V
Absen PL3.9 Plus V2	3.9 mm	31 x 2 = 62	15.5 x 1 m	3968 x 256	484 kg / 1,066 lb	8.7 kW, 42 A @ 208 V

Wall sizing assumes 1.5 m trim to the bottom edge, 0.3 m clearance under the ceiling, and a wall no wider than 80% of the longest wall. Weight and power are tile totals from the panel spec sheet; add processing, rigging, and cable.

Seating estimate

After a 12 x 7 m stage, Ambassador Ballroom holds about 207 theater seats, 85 banquet seats at rounds of 10, or 58 classroom seats. Back row in theater is roughly 12.5 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Dallas/Addison Marriott Quorum by the Galleria

Lone Star Ballroom 1-1038.4 x 22.9 m (126 x 75 ft) · 5.2 m ceiling
Lone Star Ballroom w/Screen & Stage38.4 x 22.9 m (126 x 75 ft) · 3.1 m ceiling
Lone Star 5 & 622.9 x 21.9 m (75 x 72 ft) · 5.2 m ceiling
Lone Star 5 & 6 w/Screen & Stage22.9 x 21.9 m (75 x 72 ft) · 3.1 m ceiling
Lone Star 1-5 or 6-922.9 x 19.2 m (75 x 63 ft) · 3.1 m ceiling
Lone Star 1-5 or 6-9 w/Screen & Stage22.9 x 19.2 m (75 x 63 ft) · 5.2 m ceiling
Lone Star 5 or 622.9 x 11 m (75 x 36 ft) · 5.2 m ceiling
Vista Ballroom 1 or 2 Screen15.8 x 15.2 m (52 x 50 ft) · 4 m ceiling
Vista Ballroom No Screen15.8 x 15.2 m (52 x 50 ft) · 4 m ceiling
Lone Star 1-4 or 7-1022.9 x 8.2 m (75 x 27 ft) · 4.3 m ceiling
Legacy Ballroom20.1 x 8.5 m (66 x 28 ft) · 3 m ceiling
Skyview34.1 x 4.6 m (112 x 15 ft) · 3.1 m ceiling

Published dimensions (source), fetched 2026-09-05. All rooms at Dallas/Addison Marriott Quorum by the Galleria · Venues in Dallas