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Grand Ballroom at Coex Convention & Exhibition Center

Published dimensions

Grand Ballroom is 22.3 x 79 m (73 x 259 ft), 1,762 m² (18,963 sq ft), with a 4.5 m (15 ft) ceiling.

Plan view

LED wall that fits

Under a 4.5 m ceiling with 1.5 m trim and 0.3 m clearance you get 5 rows of 500 mm tile flown. Along the 79 m wall a Absen PL2.5 Plus V2 wall runs 126 x 5 (25200 x 1000 px, 4,914 kg, 100.8 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
Absen KLCOB 0.78	0.78 mm	105 x 8 = 840	63 x 2.7 m	80640 x 3456	3,780 kg / 8,333 lb	74.3 kW, 357 A @ 208 V
Absen PL2.5 Plus V2	2.5 mm	126 x 5 = 630	63 x 2.5 m	25200 x 1000	4,914 kg / 10,833 lb	100.8 kW, 485 A @ 208 V
Absen PL3.9 Plus V2	3.9 mm	126 x 5 = 630	63 x 2.5 m	16128 x 640	4,914 kg / 10,833 lb	88.2 kW, 424 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 holds about 3,728 theater seats, 1,525 banquet seats at rounds of 10, or 1,048 classroom seats. Back row in theater is roughly 72 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Coex Convention & Exhibition Center

Hall A72 x 144 m (236 x 472 ft) · 9 m ceiling
Hall B (Exhibition Space)81 x 90 m (266 x 295 ft) · 9.5 m ceiling
Hall D81 x 81 m (266 x 266 ft) · 17.5 m ceiling
Auditorium37 x 31 m (121 x 102 ft) · 3.1 m ceiling
Conference Room North 201-203(ASEM Ballroom)23 x 44.2 m (75 x 145 ft) · 3.7 m ceiling
Hall C21.9 x 43.9 m (72 x 144 ft) · 3.1 m ceiling
Hall B ( Swing Space)40 x 18 m (131 x 59 ft) · 6.2 m ceiling
Hall D ( Swing Space)40 x 18 m (131 x 59 ft) · 9.3 m ceiling
Conference Room South 40134 x 16 m (112 x 52 ft) · 7 m ceiling
Conference Room E519 x 19 m (62 x 62 ft) · 3.6 m ceiling
Conference Room North 20223 x 15.2 m (75 x 50 ft) · 3.7 m ceiling
Conference Room South 30726.8 x 12.9 m (88 x 42 ft) · 3.3 m ceiling

Published dimensions (source), fetched 2026-09-05. All rooms at Coex Convention & Exhibition Center · Venues in Seoul