Large training room 2 (3F) at Makuhari Seminar House

Large training room 2 (3F) is 14.1 x 14.1 m (46 x 46 ft), 199 m² (2,140 sq ft), with a 3.1 m (10 ft) ceiling.

Plan view

Shape approximate: the venue publishes area only, so this room is drawn as a square of equal area.

LED wall that fits

Under a 3.1 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 14.1 m wall a Absen A2 Pro wall runs 22 x 2 (3696 x 336 px, 440 kg, 8.1 kW).

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, Large training room 2 (3F) holds about 255 theater seats, 104 banquet seats at rounds of 10, or 71 classroom seats. Back row in theater is roughly 7.1 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Makuhari Seminar House

• Hall (3F)22.8 x 22.8 m (75 x 75 ft) · 3.1 m ceiling
• Large training room 1 (2F)14.1 x 14.1 m (46 x 46 ft) · 3.1 m ceiling
• Medium training room 2 (2F)12.6 x 12.6 m (41 x 41 ft) · 3.1 m ceiling
• Medium training room 1 (2F)11.4 x 11.4 m (37 x 37 ft) · 3.1 m ceiling
• Medium training room 3,4 (3F)10 x 10 m (33 x 33 ft) · 3.1 m ceiling
• Medium training room 5,6,7 (3F)10 x 10 m (33 x 33 ft) · 3.1 m ceiling
• Small training room 2 (2F)9.2 x 9.2 m (30 x 30 ft) · 3.1 m ceiling
• Small training room 1 (2F), 3 (3F)8.7 x 8.7 m (29 x 29 ft) · 3.1 m ceiling
• Subcommittee Room 5 (2F)7.1 x 7.1 m (23 x 23 ft) · 3.1 m ceiling
• Subcommittee rooms 1,2,3,4 (2F)7.1 x 7.1 m (23 x 23 ft) · 3.1 m ceiling
• Conference Room 1 (3F)5 x 5 m (16 x 16 ft) · 3.1 m ceiling
• Conference room 2,3 (3F)3.5 x 3.5 m (11 x 11 ft) · 3.1 m ceiling

Published dimensions (source), fetched 2026-09-05. All rooms at Makuhari Seminar House · Venues in Narashino