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Grand Ballroom A at St. Charles Convention Center - Connected to Embassy Suites St. Louis St. Charles Hotel

Published dimensions

Grand Ballroom A is 13.7 x 27.4 m (45 x 90 ft), 375 m² (4,041 sq ft), with a 6.7 m (22 ft) ceiling.

Open in 3D previz

Plan view

LED wall that fits

Under a 6.7 m ceiling with 1.5 m trim and 0.3 m clearance you get 9 rows of 500 mm tile flown. Along the 27.4 m wall a Absen PL2.5 Plus V2 wall runs 43 x 9 (8600 x 1800 px, 3,019 kg, 61.9 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
Absen KLCOB 0.78	0.78 mm	36 x 14 = 504	21.6 x 4.7 m	27648 x 6048	2,268 kg / 5,000 lb	44.6 kW, 214 A @ 208 V
Absen PL2.5 Plus V2	2.5 mm	43 x 9 = 387	21.5 x 4.5 m	8600 x 1800	3,019 kg / 6,655 lb	61.9 kW, 298 A @ 208 V
Absen PL3.9 Plus V2	3.9 mm	43 x 9 = 387	21.5 x 4.5 m	5504 x 1152	3,019 kg / 6,655 lb	54.2 kW, 260 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, Grand Ballroom A holds about 647 theater seats, 264 banquet seats at rounds of 10, or 182 classroom seats. Back row in theater is roughly 20.4 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at St. Charles Convention Center - Connected to Embassy Suites St. Louis St. Charles Hotel

Expanded Exhibit Hall (Includes Jr. Ballroom)88.7 x 38.1 m (291 x 125 ft) · 7.6 m ceiling
Combined Exhibit Hall67.7 x 38.1 m (222 x 125 ft) · 7.6 m ceiling
Grand Ballroom (all)55.2 x 27.4 m (181 x 90 ft) · 6.7 m ceiling
Grand Ballroom A & B27.4 x 54.9 m (90 x 180 ft) · 6.7 m ceiling
Grand Ballroom B & C27.4 x 54.9 m (90 x 180 ft) · 6.7 m ceiling
North Exhibit Hall36 x 38.1 m (118 x 125 ft) · 7.6 m ceiling
South Exhibit Hall31.7 x 38.1 m (104 x 125 ft) · 7.6 m ceiling
Junior Ballroom (all)35.4 x 16.5 m (116 x 54 ft) · 5.5 m ceiling
Grand Ballroom B13.7 x 27.4 m (45 x 90 ft) · 6.7 m ceiling
Grand Ballroom C13.7 x 27.4 m (45 x 90 ft) · 6.7 m ceiling
Grand Ballroom D13.7 x 27.4 m (45 x 90 ft) · 6.7 m ceiling
Junior Ballroom CD16.8 x 16.8 m (55 x 55 ft) · 4.9 m ceiling

Published dimensions (source), fetched 2026-09-05. All rooms at St. Charles Convention Center - Connected to Embassy Suites St. Louis St. Charles Hotel · Venues in St Charles