Sofirn SP40 vs HS40 Graph with Molicel P30B (Surprising)

Other Types of Lights LED Headlamps
1

Finding only old graphs for the SP40, I wanted to see what was possible using a Molicel P30B. Very surprising to see almost 1,900 lumens at turn on.

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Specs

SP40: 1,200 Lumens / 134m Range
HS40: 2,000 Lumens / 175m Range

Measurements with Molicel P30B (ANSI)

SP40: 1,699 Lumens / 195m Range
HS40: 1,750 Lumens / 192m Range

Max Temp

SP40: 70°C
HS40: 47°C

I have a feeling Sofirn must be now using the XP-L2, because no old review measures over 1,400 at turn on. The website info, manual, and box sticker all state XP-L still though.

SP40: $23 (pretty solid value)
HS40: $27

2

It never came with a good battery.
It’s now only available in cold 5500k. It used to be available in three color temperatures and that’s part of why it was so popular. And I had high hopes that sofirn would keep making multiple color temperatures available specifically warm on future lights. But no, that didn’t really happen. It is the only sofirn light I have.
It has a really tight spot. No thanks. I always thought it would make a good EDC light for someone but not a headlight. I never use mine. I really disliked it while walking or hiking.

3

SP40A is still available with LH351D at lower CCT.

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4

Most of the time when I see that emitter mentioned, I temporarily confuse it with the LHP531.
I know that the two emitters are different, but the names are similar. :upside_down_face:

5

Yup but Samsung was first, they’re the OG of the 1-3-5 mixing ;).

People be warned though, SP40A and maybe some other Sofirn light can also come with an unknown TN3535 emitter which may not be high CRI like LH351D.

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6

Yeah they tried to fix the very tight spot with the A model. So they got the spot wider but it is still a well-defined spot. I believe the spill is actually dimmer. And the overall width of the entire beam is still much narrower than many other lights and way too narrow for me. Only four lumen levels. Micro USB charging.
The sp40 showed me almost everything that I don’t want in a headlight.

8

One reviewer tested it with a high amp Samsung and it still wasn’t over 1400 though.

Now updated to USB C

10

It turns out HS40 is even more concentrated than SP40… SP40A has slightly dimmer but also even wider spill. The width of the entire beam as in spot+spill? If so I disagree on that, both have very wide spill even among headlamps. What does wonders is swapping the emitter to LHP531 - brighter, wider spot and nicer tint.

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