Convoy L6... XHP70 Beast!

I was thinking last night about the option of an MT-G2 if a good NW xhp70 could not be sourced.

Can a MT-G2 be driven as hard as an xhp70?

I don’t know that I’m as interested in a MT-G2 version, but that’s because I already have an Eagletac MX25L3 that I love.

The MT-G2 can do over 16A. But it’s only making some 4300-4500 lumens up there and has started dropping in output after 12A. Djozz has charts on all that, I find them to be very accurate to what I see in an actual light.
The XHP-70, being essentially a Quad XM-L2, makes more output on lower amperage and I’ve seen it doing some 12A or more with very high output, and accompanying heat factor as well.

The MT-G2 is available in 80CRI and 90CRI variants, at a cost of lumens. Even at a measely 1.1A, lumens drop is over 300. And the CRI 90 is at 3000K, very warm.

There is a 9V MT-G2 available that can run on 3 18650’s (or 3 26650’s as the case may be) and it makes more output, around 4900 lumens up in the high range, which is getting close to the High CRI XHP-70. I think my SR-90 is making just over 5000 lumens from rested and partially used cells.

Good info, thanks.

Wow never knew that about a 12v MT-G2! What about a 12v XHP70 Dale?

How do i make a thread here? i’m not quite sure how.

9V MT-G2, they come in 6V, 9V, and 36V variations.

The 12V XHP-70 requires a specialized mcpcb that has the dies in 2S2P arrangement. It’s the same die, just wired differently on the mcpcb. The 6V XHP-70 mcpcb looks pretty much like any other star with long electrical connections on either side of the thermal pad. The 12V XHP-70 mcpcb has short sections on each side and has jumper pads in order to wire the 4 dies differently. I don’t like that one because the traces all seem very skinny, but I guess it takes lower current at higher voltage so perhaps it’s all the same?

Yeah, I understand that part about the 12v XHP70 but what about out put? I like the idea of higher voltage lower current, higher out put like you described about the MT-G2 like 900 lumens more, but would you get that or more out of a 12v XHP70? Say 1000-1200 lumens or more? Because some claim 6000 lumens out of a hard driven 6v (8,4) XHP70, so could it be possible 7000-7200 lumens out of a 12v XHP70?

Well, I saw some 6400 in my Intimidator when I first built it, with a 6V on a 6V star and running FET direct drive Zener modded. I opted for the High CRI at 96 because of that color renditioning. I don’t use the light a lot, actually had it as a mile thrower with a de-domed XM-L2 to start with. Can’t see a mile at night, so I put in the XHP-70 for giggles and grins, then switched to the Hi CRI.

I don’t know that the 12V set-up would net that much gain, it might, but I don’t recall. It’d be pushing the envelope for sure, but hey, it’s what we do right? :stuck_out_tongue:

6V vs 12V SinkPAD mcpcb

Edit: Well DUH! That’s an XHP-70 and XHP-50 but it shows how they get 12V out of the same die.

In the 9V variant of MT-G2, the mcpcb is the same either way.

+1

as a reckless data point. I have an experimental light 3s using 3x14500 that I use direct drive to drive a 6v xhp70. works like a champ. the emitter can take it. or maybe using wimpy 14500 has enough voltage drop that it is still safe from turning angry blue.

So for all those interested (including myself) I am talking to Simon about making accommodations for the MT-G2 at least in the host form. Personally I’d love to see a clear anodized L6 with a nice neutral MT-G2. One step at a time though. Let’s get some of the L6 out there and start tinkering before we decide where this journey should go next.

Woohoo! This is gonna be EPIC! :slight_smile:

Tell (ask) him to just do it! J-Dub74 I like it already!!

Agreed

Yeah… I would love that an MT-G2 variant would be offered as well.
Or else a NW version of the xhp-70 be made available.

Pretty sure that’s what JDub is working for, to get an excellent user light that needs no modifications, ready to go and work hard, right out of the box.

If it ends up that Simon can’t source a NW or hCRI XHP70, how many people would be interested in one? I know I would, and Cutter has them, but the shipping (at least in the standard checkout menu) is $25usd. If there are enough interested, it could ease the pain a bit to share the shipping costs.

Unfortunately it seems they’re out of stock on the bare emitters, but they have some that are mounted in stock. They’ve got plenty of nice tint options, too, including 4000k, 4674k, and 5000k.

how about we buy and have them shipped to Simon? then he installs it