Grand Ballroom at The Royal Sonesta Chicago Downtown
Grand Ballroom is 38.9 x 9.5 m (128 x 31 ft), 370 m² (3,978 sq ft), with a 4 m (13 ft) ceiling.
Open in 3D previzPlan view
LED wall that fits
Under a 4 m ceiling with 1.5 m trim and 0.3 m clearance you get 4 rows of 500 mm tile flown. Along the 38.9 m wall a Absen PL2.5 Plus V2 wall runs 62 x 4 (12400 x 800 px, 1,934 kg, 39.7 kW).
| Panel | Pitch | Wall (cols x rows) | Size | Resolution | Weight | Power (max) |
|---|---|---|---|---|---|---|
| Absen KLCOB 0.78 | 0.78 mm | 51 x 6 = 306 | 30.6 x 2 m | 39168 x 2592 | 1,377 kg / 3,036 lb | 27.1 kW, 130 A @ 208 V |
| Absen PL2.5 Plus V2 | 2.5 mm | 62 x 4 = 248 | 31 x 2 m | 12400 x 800 | 1,934 kg / 4,265 lb | 39.7 kW, 191 A @ 208 V |
| Absen PL3.9 Plus V2 | 3.9 mm | 62 x 4 = 248 | 31 x 2 m | 7936 x 512 | 1,934 kg / 4,265 lb | 34.7 kW, 167 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 634 theater seats, 259 banquet seats at rounds of 10, or 178 classroom seats. Back row in theater is roughly 31.9 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.
Other rooms at The Royal Sonesta Chicago Downtown
- Grand ABC27.1 x 9.4 m (89 x 31 ft) · 4 m ceiling
- Grand BCD24.7 x 9.4 m (81 x 31 ft) · 4 m ceiling
- Grand AB21.3 x 9.4 m (70 x 31 ft) · 4 m ceiling
- Penthouse Ballroom14.4 x 13.4 m (47 x 44 ft) · 4 m ceiling
- Grand CD18.3 x 9.4 m (60 x 31 ft) · 4 m ceiling
- Pre-Function A16.2 x 10.4 m (53 x 34 ft) · 2.4 m ceiling
- Penthouse Terrace14.1 x 10.4 m (46 x 34 ft) · 3.1 m ceiling
- Grand A14.3 x 9.4 m (47 x 31 ft) · 4 m ceiling
- Grand BC13.1 x 9.4 m (43 x 31 ft) · 4 m ceiling
- Grand D11.9 x 9.4 m (39 x 31 ft) · 4 m ceiling
- Penthouse Pre-Function4.3 x 18 m (14 x 59 ft) · 2.4 m ceiling
- Adams15.9 x 4.1 m (52 x 13 ft) · 2.4 m ceiling
Published dimensions (source), fetched 2026-09-04. All rooms at The Royal Sonesta Chicago Downtown · Venues in Chicago