Mini LED Spots for Terrace Canopy

but the other transformers that are dimmable work too, and it doesn't have to be DALI, right?

That's true. I just had bad luck with the quality and for my taste too much "flickering" when dimming. In the children's apartments, it's not so bad, as they are not dimmed much. That's why I haven't changed it yet. Principle: The stronger you dim, the greater the tendency to flicker.

does anyone of you know good LED spots with 3000K color temperature and an installation diameter of 27mm?

There are certainly a few – how long they last, I have no recommendation due to lack of specific product knowledge. The smaller the diameter of the light source (which is technically predetermined for you), the more prone it is to glare. Therefore, I would definitely take a model with a diffusion lens. Maybe just buy some as spare parts. It’s annoying if a luminaire fails and the model is no longer available. I have had that experience before. Costs and storage effort are quite reasonable. Regarding the question "whether that's enough": With the 3.3W Luxvenum, which are supposed to correspond to a 25W halogen reflector, you get a total luminous flux of around 3500 lumens. In living rooms, a rule of thumb is to aim for 100-150 lm/m². From that, you can roughly estimate how bright it will be in the room without dimming. Regarding color temperature: 2700K is the classic incandescent bulb. Many perceive that as "yellowish". This perception is rarely expressed at 3000K. If you want to avoid "yellowish light" and still have it as "cozy" as possible, you are on the right track. At 3500K, you still won't have the impression that the light is "cold". Regarding CRI: With the same properties, I would prefer the higher CRI and also accept a higher price for it. But rather the right amount of light and distribution at the right color than consistently optimizing CRI. Maybe I have emphasized that too much.

I'm currently struggling with 27mm and can hardly find anything there

could you check if you can find something?

Maybe I have to convince the supplier to install 34mm hole diameter so that I can get them from Luxvenum (they seem to be good)

Do I maybe have to estimate a higher lumen value under a canopy since there are no walls to reflect the light like in rooms
but with a total of 3500 lumens I'm already doing well

maybe instead of 2 on each rafter, make 18 with 3 / 2 / 3 / 2 ...

But quantity is secondary for now

I first need LED spots with 27mm, it's extremely hard for me to find anything
I don't know anything about LED spots either

Ask ChatGPT, for such research tasks it is unbeatable.

Nothing sensible came out of it for me

I have also found BESLED veranda spotlights that connect directly to 230V
Article number: BSE400007

They have 3W and are dimmable
300 lumens but only a 30-degree beam angle

27mm hole diameter

What do you think of them? The narrow beam angle could be a problem, right?

With the very small hole diameter, I also cannot find a model with a diffuser. Presumably, there are thermal issues in that case. But a diffuser can - if necessary - also be manually placed in front quite nicely, leaving some air for the heat dissipation of the luminaire.