Project Overview
A 320 m² late-night cocktail lounge in Prague’s Karlín district was conceived around an oceanic “deep-dive” theme. The client briefed Senfey for two integrated lighting layers: a flowing, current-like neon flex LED canopy across the ceiling, and a fully addressable pixel wall behind the spirits display, synchronized with the venue’s music control system. The brief required low-voltage, fully dimmable, and serviceable hardware that could survive a humid, smoke-machine-heavy nightly operation.
Products Supplied
| Model | Type | Specification | Quantity |
|---|---|---|---|
| SF-NEON-SF1620-24V-IP67 | Side-Bend Silicone Neon Flex | 6500K, 9 W/m, 20 mm bend radius, IP67 | 248 m |
| SF-DMX-SK6812-60-24V-IP67 | Addressable RGBW Strip | SK6812 IC, 60 LEDs/m, IP67, IC per pixel | 46 m |
| SF-COB480-24V-CRI90-IP20 | COB LED Strip | 3000K, CRI ≥ 90, 10 W/m, 480 LEDs/m | 28 m |
| SF-CTRL-DMX512-4CH | DMX Decoder | 4 channels, PWM output, zone-level control | 6 pcs |
| SF-CTRL-ART-SPI-680 | Art-Net / sACN Pixel Controller | SPI output, up to 680 pixels per port | 2 pcs |
| SF-PSU-200W-24V-IP67 | LED Power Adapter | 200 W, 24 V DC, IP67, Class-2 waterproof | 14 pcs |
Project Challenges
The ceiling design required continuous “wave” runs of up to 11 m with no visible joints or dark spots, while still allowing the curves to navigate HVAC ducts and acoustic panels. The backbar wall needed pixel-accurate mapping aligned to roughly 3,000 individual bottle positions, viewable from 8 m away without moiré. The venue runs nightly fog and CO₂ effects, with ceiling-level ambient peaking at 42°C — driver corrosion and thermal stress were a serious risk. On the first dry-fit, long parallel runs from the drivers to the furthest neon segments triggered a 6.8% voltage drop, shifting the 6500K white visibly toward warm, which was unacceptable against the architectural rendering.
Product Highlights
SF-NEON-SF1620 is a 16×20 mm top-emitting silicone profile with a true 20 mm bend radius, allowing the designer’s sketches to be reproduced 1:1 on a CNC-bent aluminum sub-frame — every wave was delivered as a single pre-soldered, drawing-referenced piece. The IP67 silicone jacket with welded end-caps was qualified under a 96-hour salt-fog and condensation cycle, so it tolerates nightly fog operation without milking or yellowing. The SK6812 RGBW addressable strip carries a dedicated W channel, giving a clean dimmed white for “service mode” without the muddy mixed white typical of RGB-only addressable strips. Dual-end power injection combined with our low-resistance copper formulation kept the longest run within 2.3% voltage drop and maintained CCT consistency across all 248 m. The COB under-bar strip at CRI ≥ 90 / R9 ≥ 50 keeps cocktail garnishes and skin tones natural — a deliberate counterweight to the saturated overhead show.
Result
Fabrication was completed in six weeks; on-site installation and commissioning closed in another two. The canopy went up in four nights against a budgeted ten, and the backbar pixel map was scene-programmed to the venue’s playlist on the final day. Six months into nightly operation, the system has logged zero driver failures and zero dead pixels. The client has already committed Senfey to their next venue in Brno. For similar large-scale immersive installations, see our Sphere Las Vegas interior pixel project, or browse all commercial lighting case studies.
