SA1a at McCormick Place

Published dimensions

SA1a is 11.6 x 26.5 m (38 x 87 ft), 307 m² (3,309 sq ft), with a 3.4 m (11 ft) ceiling.

Plan view

LED wall that fits

Under a 3.4 m ceiling with 1.5 m trim and 0.3 m clearance you get 3 rows of 500 mm tile flown, which is tight; ground-stack or go lower on trim. Along the 26.5 m wall a Absen PL2.5 Plus V2 wall runs 42 x 3 (8400 x 600 px, 983 kg, 20.2 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
Absen KLCOB 0.78	0.78 mm	35 x 4 = 140	21 x 1.4 m	26880 x 1728	630 kg / 1,389 lb	12.4 kW, 60 A @ 208 V
Absen PL2.5 Plus V2	2.5 mm	42 x 3 = 126	21 x 1.5 m	8400 x 600	983 kg / 2,167 lb	20.2 kW, 97 A @ 208 V
Absen PL3.9 Plus V2	3.9 mm	42 x 3 = 126	21 x 1.5 m	5376 x 384	983 kg / 2,167 lb	17.6 kW, 85 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, SA1a holds about 496 theater seats, 203 banquet seats at rounds of 10, or 139 classroom seats. Back row in theater is roughly 19.5 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at McCormick Place

W375/Skyline146.6 x 63.6 m (481 x 209 ft) · 3.1 m ceiling
S100/Grand45.4 x 71.9 m (149 x 236 ft) · 7 m ceiling
E354/Lakeside91.3 x 33.2 m (300 x 109 ft) · 14.6 m ceiling
W375e42.2 x 60.1 m (138 x 197 ft) · 3.1 m ceiling
E354a54.1 x 45.7 m (177 x 150 ft) · 14.6 m ceiling
E354b54.1 x 45.7 m (177 x 150 ft) · 14.6 m ceiling
S406/Vista45.4 x 47.3 m (149 x 155 ft) · 10.6 m ceiling
W375c27.4 x 63.6 m (90 x 209 ft) · 12.1 m ceiling
W375d27.4 x 63.6 m (90 x 209 ft) · 12.1 m ceiling
W375b27.3 x 63.6 m (90 x 209 ft) · 3.1 m ceiling
S100bc45.5 x 36 m (149 x 118 ft) · 7 m ceiling
S100a45.1 x 35.9 m (148 x 118 ft) · 7 m ceiling

Published dimensions (source), fetched 2026-09-04. All rooms at McCormick Place · Venues in Chicago