Measure the throw before you read any spec
Every waterproof gobo projector decision starts from one measurement that most buyers skip: the distance between where the unit can be mounted and the surface it has to cover. Once you have that figure, the power bracket narrows from everything on the market to a handful of models, and the lens choice follows from it. Work it out with a tape, not from a floor plan, because ceiling voids, signage and light fittings move the real mounting point by a metre or more.
- Distance from the realistic mounting point to the centre of the target surface
- Image width you actually need, measured on the wall
- Whether the surface is flat, matte and square to the beam
- Any obstacle in the beam path — signage, foliage, display stands
Match output to the ambient light
The wattage question is really an ambient light question. Daylight starts around 10,000 lux, a lit retail interior runs 300–500 lux, and a dim restaurant may sit under 100 lux. A waterproof gobo projector has to beat whatever is already falling on that surface, which is why the same model can look brilliant in an exposed wall and invisible in a poolside.
Lens, zoom and focus
Ask two questions about the lens: what is the throw ratio range, and can focus be locked. A waterproof gobo projector with a 3:1 zoom will cover 5 to 35 m from the same bracket, but only if the focus mechanism holds its setting once the housing is warm and the site has been vibrating for a month.
What your artwork forces you to buy
Choose the gobo from the artwork file. Solid block logos survive etching into stainless steel and will outlast the projector, but anything with hairlines, grey levels or a photographic element has to go on glass. This is the decision that most often gets made backwards — the buyer orders a cheap metal gobo, sees the result on the wall, and reorders in glass two weeks later.
Where it lives matters as much as what it does
The ingress rating is a statement about where the unit can live, not how good it is. IP67 on a waterproof gobo projector means it will cope with the conditions it was tested for — driving rain, dust, or in the case of indoor ratings, nothing more than a wipe-down. If the install is under a soffit that only sees wind-blown rain, an indoor-rated unit may be fine; if it is exposed on an entrance canopy, IP67 is the floor, not the target.
What to send when you ask for a quote
The fastest quotes come from the most specific enquiries. Include the mounting height, the distance to the target surface, whether it is indoor or exposed, and the artwork in vector if you have it. A waterproof gobo projector specification built from those details can be quoted and shipped without a second round of clarification.
- Mounting point and distance to the surface
- Image size needed
- Indoor or exposed position
- Working hours and ambient conditions
- Artwork in vector format
