Grand Ballroom at Philadelphia Marriott Downtown
Grand Ballroom is 74.7 x 42.7 m (245 x 140 ft), 3,190 m² (34,334 sq ft), with a 6.7 m (22 ft) ceiling.
Open in 3D previzPlan 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 74.7 m wall a Absen A2 Pro wall runs 119 x 9 (19992 x 1512 px, 10,710 kg, 198.1 kW).
| Panel | Pitch | Wall (cols x rows) | Size | Resolution | Weight | Power (max) |
|---|---|---|---|---|---|---|
| 9thPanel DW1.9 S Pro | 1.875 mm | 99 x 14 = 1386 | 59.4 x 4.7 m | 31680 x 2520 | 6,653 kg / 14,667 lb | 352 kW, 1693 A @ 208 V |
| Absen A2 Pro | 2.97 mm | 119 x 9 = 1071 | 59.5 x 4.5 m | 19992 x 1512 | 10,710 kg / 23,611 lb | 198.1 kW, 953 A @ 208 V |
| Absen A3 Pro | 3.9 mm | 119 x 9 = 1071 | 59.5 x 4.5 m | 15232 x 1152 | 10,175 kg / 22,431 lb | 171.4 kW, 824 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 6,901 theater seats, 2,823 banquet seats at rounds of 10, or 1,941 classroom seats. Back row in theater is roughly 67.7 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.
Other rooms at Philadelphia Marriott Downtown
- Franklin Hall41.8 x 70.1 m (137 x 230 ft) · 3.2 m ceiling
- Franklin B41.8 x 41.8 m (137 x 137 ft) · 3.2 m ceiling
- Franklin A41.8 x 28.3 m (137 x 93 ft) · 3.2 m ceiling
- Liberty Ballroom29.3 x 19.5 m (96 x 64 ft) · 6.4 m ceiling
- Salon E21.9 x 21 m (72 x 69 ft) · 6.7 m ceiling
- Salon F21.9 x 21 m (72 x 69 ft) · 6.7 m ceiling
- Salon G21.9 x 21 m (72 x 69 ft) · 6.7 m ceiling
- Salon H21.9 x 21 m (72 x 69 ft) · 6.7 m ceiling
- Liberty Salon A & B17.7 x 19.5 m (58 x 64 ft) · 6.4 m ceiling
- Liberty Salon B & C17.7 x 19.5 m (58 x 64 ft) · 6.4 m ceiling
- Independence Ballroom20.1 x 12.2 m (66 x 40 ft) · 6.4 m ceiling
- Liberty Salon A11.6 x 19.5 m (38 x 64 ft) · 6.4 m ceiling
Published dimensions (source), fetched 2026-09-05. All rooms at Philadelphia Marriott Downtown · Venues in Philadelphia