Dynamo LED Displays supplied and installed a 4mm pixel pitch rental LED video wall, more than 5 m wide and ground-stacked on the stage, for the London launch of the LG G4 smartphone at One Marylebone. The wall was built in under three hours and calibrated on site before the presentation began.
Updated September 2026. Case study first published April 2016.
Project facts
| Client | LG, London launch event for the LG G4 smartphone |
|---|---|
| Venue | One Marylebone, London |
| Screen | 4mm pixel pitch rental LED video wall, more than 5 m wide |
| Mounting | Floor-mounted: ground-stacked on the stage rather than flown |
| Build | Installed in under three hours, then calibrated on site |
| Scope | LED wall hire, installation, calibration and on-site support during the event by Dynamo LED Displays |
The brief: a stage screen for a product reveal
LG launched the G4 in April 2015 with a series of events, London among them. A phone launch is a presentation first and a party second: the screen behind the presenter carries the slides, the product renders and the video, and it has to look right both to the room and to the press cameras at the back. The venue was a hired space with a temporary stage, so the screen had to go in and come out on the same day.
What Dynamo installed
A 4mm rental LED wall, ground-stacked on the stage
Dynamo built the wall from 4mm pixel pitch rental cabinets, floor-mounted on the stage so no rigging points were needed in the venue. At more than 5 m wide the wall filled the stage width behind the presenter, and at 4mm the image held together for a seated audience a few metres back. Our guide to rigging versus ground-stacking a hired LED screen covers when each approach makes sense.
Built in under three hours
The crew erected the wall in under three hours, which is the reason ground-stacked rental LED is the usual choice for a one-day launch. The cabinets lock together on a base, the processor and media player are connected at the back, and the wall is live before the client rehearsal. The same crew stayed on site through the event.
Calibrated on site for colour
After the build the wall was calibrated so every cabinet matched in brightness and colour, which is what stops a rental wall looking like a patchwork of tiles under stage lighting. For a launch where the product colours matter, the orange leather back of the G4 in this case, that calibration step is what the photographs pick up.
Current Dynamo options for a launch stage screen
Dynamo’s current rental range is the DRE Series, and a stage screen viewed from a few metres would now be specified at a finer pitch than the 4mm used here. The figures below are from the DRE Series datasheet. All DRE indoor cabinets are 496 × 496 mm, 9.2 kg, with a 1,920 to 3,840 Hz refresh rate for camera work.
| Model | Pixel pitch | Cabinet resolution | Brightness | Suited to |
|---|---|---|---|---|
| DRE P1.55 | 1.55mm | 320 × 320 px | 800 nits or more | Close product shots and camera work |
| DRE P1.93 | 1.93mm | 256 × 256 px | 800 nits or more | Presentation stages with a seated audience |
| DRE P2.58 | 2.58mm | 192 × 192 px | 800 nits or more | Wider stages and larger rooms |
For help choosing a pitch see the pixel pitch guide; for the cabinets themselves see event rental LED display panels and our LED screen hire service. A permanent stage would use a fixed-install range instead, as explained in rental LED versus fixed install.
Related Dynamo launch projects
- Oculus Quest 2 launch at Harrods
- Zenvo Aurora Tur launch at Goodwood
- ABG Lab cosmetics launch in Mayfair
- Glossier pop-up on Regent Street
LED video walls for product launches: frequently asked questions
What pixel pitch suits an LED video wall for a product launch?
It depends on how close the nearest viewer or camera sits. For a presentation stage with the front row a few metres away, 1.9mm to 2.6mm keeps the LED structure invisible and text sharp. The LG G4 launch used 4mm, which was standard rental kit at the time; today Dynamo would specify DRE P1.93 or P2.58 for the same stage.
How long does it take to build a hired LED video wall?
A ground-stacked rental wall of the size used at the LG G4 launch, more than 5 m wide, went up in under three hours including cabling and calibration. Flown walls take longer because rigging points, motors and truss have to go in first. Dynamo plans the build around venue access so the wall is live before the client rehearsal.
What does ground-stacked mean for an LED screen?
A ground-stacked LED wall stands on a base frame on the floor or stage rather than hanging from truss or a ceiling point. It needs no rigging in the venue, goes up faster and suits hired spaces where drilling or flying loads is not allowed. The trade-off is floor space behind the wall for the base and ballast.
Why is a rental LED wall calibrated on site?
Rental cabinets come from different batches and hours of use, so without calibration one tile can sit slightly brighter or warmer than its neighbour. On-site calibration matches every cabinet in brightness and colour so the wall reads as one surface, on camera as well as to the room. It takes the crew a short while after the build.
Can a hired LED wall show a live laptop feed during a presentation?
Yes. The LED processor takes an HDMI or SDI feed from the presentation laptop or vision mixer and scales it to the wall, so slides, video and live camera can all run through the same screen. Dynamo supplies the processor and media player with the wall and a technician stays on site to switch sources during the event.
Get a quote for a launch LED video wall
Send us the venue, the date, the stage width and how close the front row and the cameras will be, and we will come back with a pixel pitch, a build plan and a written hire quote. Get a quote or call 020 3489 9878.
