XHP50.2 XHP70.2 WOW

[brighterthanthesun]

Re: XHP50.2 WOW

It will certainly have more throw than an xhp70 and the lumen output will be closer, but I expect the 70, and for sure the 70.2, will still have a bit more out the front lumens.

The question is whether the xhp50.2 dome can be shaved without producing an undesirable beam color.

I asked Vinh about the 50.2 as soon as I heard about it a week ago and he said that it was unlikely that he would be able to do a shaved dome on it.

 

[wimmer21]

Re: XHP50.2 WOW

I asked Vinh about the 50.2 as soon as I heard about it a week ago and he said that it was unlikely that he would be able to do a shaved dome on it.

So we pretty much just gain a few lumens but lose probably 30% in throw. Thanks for nothing, Cree.

It's still an upgrade for people who prefer dome on though. I wonder who those people are?

 

[Offgridled]

Re: XHP50.2 WOW

So we pretty much just gain a few lumens but lose probably 30% in throw. Thanks for nothing, Cree.

It's still an upgrade for people who prefer dome on though. I wonder who those people are?

Hmmmmmmmmmm

 

[wimmer21]

Re: XHP50.2 WOW

Who chooses 28k lux over 45k lux just for maybe a 5% increase in total lumens? I'll never understand that logic.

 

[MAD777]

Re: XHP50.2 WOW

I believe Vinh said he could drive the 50.2 harder than the 50.
That may produce enough additional lumens to be significant and/or offset the loss of throw from a shaved 50.

 

[wimmer21]

Re: XHP50.2 WOW

:buddies:

Hmmmmmmmmmm

Are you part of the dome on crew OG? If so I hope I haven't offended.

 

[wimmer21]

Re: XHP50.2 WOW

I believe Vinh said he could drive the 50.2 harder than the 50.
That may produce enough additional lumens to be significant and/or offset the loss of throw from a shaved 50.

So maybe we'll only lose 20% in throw. THAT'S STILL NOT OK MAD! :laughing: :mecry:

 

[brighterthanthesun]

Re: XHP50.2 WOW

Who chooses 28k lux over 45k lux just for maybe a 5% increase in total lumens? I'll never understand that logic.

I may be remembering this wrong, but I think that it will throw better with dome on than the 50 with dome on. I may have understood him wrong, LED's tend to confuse me too Wimmer.

 

[wimmer21]

Re: XHP50.2 WOW

I may be remembering this wrong, but I think that it will throw better with dome on than the 50 with dome on. I may have understood him wrong, LED's tend to confuse me too Wimmer.

Sure, the new xhp50.2 will have an increase in output so it will certainly produce more throw than the dome on version of the older 50. But it will fall considerably short (in my estimation) in terms of throw compared to last year's xhp50 with shaved dome. I'm sure the new 50 is a fine emitter and will be very popular.

 

[brighterthanthesun]

Re: XHP50.2 WOW

As far as I am concerned, I would like to see a throwy LED like the XPG2 be improved to provide more lumens without sacrificing throw. For example, I would love to see the U21vn or T21vn give us 1500 lumens with the same great throw. Conversely, improve a high lumen LED by giving it greater throw. To be a significant improvement the LED has to give us the better output characteristics without generating more heat. I get the concept of having amazing output for a while and then turning the light down, but I think that increased performance that can only be achieved at the cost of more heat is just chasing our tail. This, IMHO, is especially true with throwers. I buy a thrower to throw, and when I have to turn it down I loose that throw too quickly. If you cut a floody light to 50% the change is not as drastic.

 

[richbuff]

Re: XHP50.2 WOW

If a light is definitely designed for a certain purpose, then I am willing to trade some of that specific purpose to get more than some of the other purpose by de-doming.

For example, a monster flooder can yield X amount of lumens domes on. If I can get a certain percentage increase in throw by sacrificing less than that percentage of lumens, ok/fine. But I will not be interested in sacrificing 15% lumens to get 8% more throw, for example.

Additionally, if a light is definitely designed to excel at a certain purpose, I am hesitant to sacrifice some of that primary purpose to get a little more of the distant second purpose.

That is, I don't want to lessen what a TN42 is designed to excel at to make it a little bit more of a TN36. And vice versa.

 

[Offgridled]

Re: XHP50.2 WOW

:buddies:

Are you part of the dome on crew OG? If so I hope I haven't offended.

My dome came off a long time ago

 

[brighterthanthesun]

Re: XHP50.2 WOW

If a light is definitely designed for a certain purpose, then I am willing to trade some of that specific purpose to get more than some of the other purpose by de-doming.

For example, a monster flooder can yield X amount of lumens domes on. If I can get a certain percentage increase in throw by sacrificing less than that percentage of lumens, ok/fine. But I will not be interested in sacrificing 15% lumens to get 8% more throw, for example.

Additionally, if a light is definitely designed to excel at a certain purpose, I am hesitant to sacrifice some of that primary purpose to get a little more of the distant second purpose.

That is, I don't want to lessen what a TN42 is designed to excel at to make it a little bit more of a TN36. And vice versa.

I think that I pretty much agree. What I think of as an improvement would be for instance, increasing the output of the U21vn XPG2 PDT to go from 870 lumen and 320k lux to 1500 lumen and 320k lux or 1000 lumen and 400k lux. I would not want to see 1800 lumen but only 85k lux. That would be a nice light, but a completely different light.

 

[Offgridled]

Re: XHP50.2 WOW

I think that I pretty much agree. What I think of as an improvement would be for instance, increasing the output of the U21vn XPG2 PDT to go from 870 lumen and 320k lux to 1500 lumen and 320k lux or 1000 lumen and 400k lux. I would not want to see 1800 lumen but only 85k lux. That would be a nice light, but a completely different light.

+1

 

[MC408]

Re: XHP50.2 WOW

TN32UTvn XPL PDT: Lumen 1500/1400 - Lux 402K/400K
TN32UTvn XPG2 PDT: Lumen 885/825 - Lux 537K/500K


TN32UTvn50.2 + DriverVNX2 + XHP50.2 6500K HD J4 1A
Lumen: 3900
Lux: 200K
Throw: 8904m

Not sure what xhp50 dome on , shaved dome or dedome would do in this light, but here is what I could find on releases before Vinh putting the xhp50.2 in it.

 

[Offgridled]

Re: XHP50.2 WOW

Larger lumen less lux. A hit for the flooder crew for sure.. really does give a big diversity to this light..

 

[MC408]

Re: XHP50.2 WOW

From what I could find.

M25c2vn xpg2 pdt
750-800 lumens
343,000 lux

M25C2vn.50 + DriverVN2 + XHP50.2 6500K HD J4 1A
Lumen: 3400
Lux: 135K
Throw: 735m

I think the big bump in lumens vs the drop in lux is worth it.

Neither light is a dedicated flooder or thrower, they are both more balanced.

 

[search_and_rescue]

Re: XHP50.2 WOW

XHP50.2 is much easier to overdrive thus much larger gain. I think it has to do with the lower 5.6V VS 5.75V forward voltage!!!!

I love you brother! Maximum Overdrive!! V54 4ever! lovecpf

 

[MAD777]

Re: XHP50.2 WOW

Here's my take, consider the U21vn options. I took the XPL over the XPG2. I gave up the 19% of the lux to gain 72% of the lumen, which resulted in a larger, more practical hot spot size.

 

[brighterthanthesun]

Re: XHP50.2 WOW

Here's my take, consider the U21vn options. I took the XPL over the XPG2. I gave up the 19% of the lux to gain 72% of the lumen, which resulted in a larger, more practical hot spot size.

I made the same choice for the exact reasons when I chose the XPL PDT version of the U21vn to be my first and possibly my favorite Vinh light.