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Grand Ballroom at Boston Marriott Copley Place

Published dimensionsLargest room

Grand Ballroom is 32.9 x 67.4 m (108 x 221 ft), 2,218 m² (23,869 sq ft), with a 6.4 m (21 ft) ceiling.

Plan view

LED wall that fits

Under a 6.4 m ceiling with 1.5 m trim and 0.3 m clearance you get 9 rows of 500 mm tile flown. Along the 67.4 m wall a Absen PL2.5 Plus V2 wall runs 107 x 9 (21400 x 1800 px, 7,511 kg, 154.1 kW).

Panel	Pitch	Wall (cols x rows)	Size	Resolution	Weight	Power (max)
Absen KLCOB 0.78	0.78 mm	89 x 13 = 1157	53.4 x 4.4 m	68352 x 5616	5,207 kg / 11,478 lb	102.4 kW, 492 A @ 208 V
Absen PL2.5 Plus V2	2.5 mm	107 x 9 = 963	53.5 x 4.5 m	21400 x 1800	7,511 kg / 16,560 lb	154.1 kW, 741 A @ 208 V
Absen PL3.9 Plus V2	3.9 mm	107 x 9 = 963	53.5 x 4.5 m	13696 x 1152	7,511 kg / 16,560 lb	134.8 kW, 648 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 4,741 theater seats, 1,939 banquet seats at rounds of 10, or 1,333 classroom seats. Back row in theater is roughly 60.4 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Boston Marriott Copley Place

Salons E-G48.5 x 32.9 m (159 x 108 ft) · 6.4 m ceiling
Back Bay Conference and Exhibition Center46.6 x 33.8 m (153 x 111 ft) · 2.4 m ceiling
Salons E-F32.9 x 32.9 m (108 x 108 ft) · 6.4 m ceiling
Salons F-G32.6 x 32.9 m (107 x 108 ft) · 6.4 m ceiling
Gloucester42.1 x 23.2 m (138 x 76 ft) · 2.4 m ceiling
Salons A-E32.9 x 24.7 m (108 x 81 ft) · 4.3 m ceiling
Salon F17.1 x 32.9 m (56 x 108 ft) · 6.4 m ceiling
Salon E15.8 x 32.9 m (52 x 108 ft) · 6.4 m ceiling
Salon G15.5 x 32.9 m (51 x 108 ft) · 6.4 m ceiling
Salons A-D31.7 x 9.4 m (104 x 31 ft) · 4.3 m ceiling
Salons H-K31.7 x 9.4 m (104 x 31 ft) · 4.3 m ceiling
Salons A-C24.7 x 9.4 m (81 x 31 ft) · 4.3 m ceiling

Published dimensions (source), fetched 2026-09-05. All rooms at Boston Marriott Copley Place · Venues in Boston