With SOL 2835 3.2v SunLike TRI-R (3-R) from Smart Eco Lighting co ltd:
MASS 13D 60pcs SOL 2835 LEDs dimmable
~35$ Ø75.5x151.5(149)mm 231grams Δ41° E27/26 e14 B22
MASS GX53 48pcs SOL 2835 LEDs
~25$ 111 gram
MASS 7C 19w COB SOL
The same photo with 6C
~25$ E27/26 e14 GU10 gu5.3/mr16 B22
Compare of the size 11 and 13D
Futured bedtime bulb lamp with SOL SunLike 2200k 2250k
7w (asian style body with round diffuser) & 5w (special project body with round diffuser)
About discounts for MASS models
It was the reason why I created it
I think maximum discount will be 20-25% (with 6$ international shipping for any order) and will seems like that: 5+pcs = 5% discount; 15+pcs = 10% discount; 30+pcs = 15% discount; 50+pcs = 20% discount; 100+pcs = 25%
Wholesale price will be about 50% (without shipping)
Some people prefer Duv to be right around zero (neutral tint), and others prefer it to be slightly negative (rosy tint), especially for warmer light.
Have you heard of this study?
Is it possible to tune these bulbs to also offer variants with negative Duv, say –0.005 and –0.010? This would lower color accuracy somewhat, but people might like the light more.
Tint mixing neutral light of different color temperatures is one way to do this.
That 4200K option may work. Ideally I’d get as close to 5600k as possible but with lower duv, so I’m curious what something like 2x 5600, 1x 4000 would produce.
It might be a good business move to mix 3000k and 4000k LEDs to create the elusive “true neutral” 3500k bulb. There are a lot of sellers selling 2700/3000/4000/5000k bulbs, but I don’t know of any selling a good 3500k.
I know you are thinking I must be basing this on personal opinion, but the ANSI standard “C78.376-2014” accepts 3500K as the true neutral.