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 PL2.5 Plus V2 wall runs 119 x 9 (23800 x 1800 px, 8,354 kg, 171.4 kW).
| Panel | Pitch | Wall (cols x rows) | Size | Resolution | Weight | Power (max) |
|---|---|---|---|---|---|---|
| Absen KLCOB 0.78 | 0.78 mm | 99 x 14 = 1386 | 59.4 x 4.7 m | 76032 x 6048 | 6,237 kg / 13,750 lb | 122.6 kW, 590 A @ 208 V |
| Absen PL2.5 Plus V2 | 2.5 mm | 119 x 9 = 1071 | 59.5 x 4.5 m | 23800 x 1800 | 8,354 kg / 18,417 lb | 171.4 kW, 824 A @ 208 V |
| Absen PL3.9 Plus V2 | 3.9 mm | 119 x 9 = 1071 | 59.5 x 4.5 m | 15232 x 1152 | 8,354 kg / 18,417 lb | 149.9 kW, 721 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