KC1 keychain light is available now

Thank you so much for the work you do for us :slight_smile:

I wanted to ask about the direct-drive channel for Turbo mode in the K9.3 flashlight. Let’s take the Noctigon K9.3 flashlight with the Anduril version of the Tint Ramp (channel ramping) with LEDs:
9x XP-L HI 5000K on Channel 1 (9A CC + Direct Drive) and
3x Nichia 219B 2700K on Channel 2 (5A Constant Current).
Let’s assume a situation where we stand in the middle of a tint-ramp, all the LEDs from the first and second channels will be lit. Now we will increase the brightness to the ceiling level of the ramp. All the LEDs will still be lit. But what happens if at this point I press 2 times (2C) i.e. turn on Turbo mode? Then the LEDs of the first channel (XPL HI) will light up with maximum power supplied by the FET DD. And what happens to the second channel (Nichia 219)? Nichia 219 will go out completely?

My second question is about the D4Sv2 flashlight with the Anduril version of the Tint Ramp and with the same LEDs as in the K9.3.
2x XP-L HI 5000K 9A CC
2x Nichia 219B 2700K 5A CC
In this design the FET is turned off. We can mix the color temperature freely.
We have the flashlight on and the tint-ramp set to center, all LEDs are lit with similar brightness. Now after activating the Turbo mode by pressing 2 times (2C) the brightness will change to the top of the ramp, and what will happen to the tint-ramp? Will the diodes from two channels still be lit? How will the power supply be implemented then? Will the 9A current be divided among the 4 diodes in maximum brightness mode?

Hank,

will it be possible in the future (or possible now) to get the K9.3 with a 9amp CC driver for Channel 2? In the event of using w1/w2, or even sst20, 9amp would be a real upgrade for the (3) channel #2 LED's. Thank you!

It’s great that you made a new driver for the Emisar D4Sv2 with dual channel support :+1: This flashlight has great thermal capabilities. With a new driver it will keep the brightness high wonderfully :slight_smile:
I have a few friends willing to purchase a few units.

I am interested in the “channel ramping” version with diodes:
On the first channel: 2 XP-L HI 4000K LEDs powered by 9A CC.
On the second channel: 2 Nichia 219B 2700K diodes powered by 5A CC.
These diodes require different currents. Can you prepare such a version?

In a situation where the brightness is set to maximum and the Tint-Ramp is set in the middle (so that 4 diodes are lit) then what current will go to the diodes?
9A/4 diodes=2,25A or 5A/4=1,25A?

:question:

I am still interested in the second version of the Emisar D4Sv2 flashlight with four Osram W1 diodes. I would buy a few of such flashlights if you would make for it a single channel driver with full stabilization like KR4 flashlight has (9A Constant Current + Direct Drive). Are you able to prepare such a driver for D4Sv2?

D4Sv2 with 4 Osram W1 diodes is offered with obsolete driver (FET+ 3). I think a lot of people would like to buy a D4Sv2 flashlight with Osram W1, W2 or XPL HI diodes if it had a driver with KR4 (9A CC + DD), because KR4 driver gives very good stabilization.

I own all models of your Emisar/Noctigon flashlights :sunglasses: I hope to enlarge my collection :innocent: Thank you for making such cool flashlights :slight_smile:

I’m wondering. On a kr4 with tint ramping. How is the beam when only one channel is active?

The beam pattern is almost the same as all 4 LEDs are on.

Thanks Hank. How do I order tint ramping kr4 again. None for D4v2 right?

There is purhcase link on the site, you can order the regular KR4 on the site, and let us know the order number,
it will be fine.

Any chance of it happening in a D4v2 or too small?

Hank, does 2x SST20-DR and 2x 219B-V1 3500K work together both in KR4 and D4SV2? If so, what driver will you be using? 5A noFET or 9A noFET? Are LEDs aligned in diagonally crossed pattern or two colors side by side?

Yes, this combination works for both KR4 and D4S V2.
There are dozons of different combinations.

We choose the suitable current for each combination.
For example, if you choose 219B on both channels, we will use 5A for each channels.
If you choose 219B on one channel, and W1 LED on the other channel, we will use 5A for 219B, and 9A for W1 LED channel.
If you have your preference, just drop us an email, we will customs make it for you.

LEDs are at crossed pattern.

Thank you Hank. That is very helpful information. I am just waiting for DM11 to become available before I make my next order for at least two more flashlights. :)

By the time waiting for DM11, my bad habit made me click the buy button for Kr4 tint shift verssion. Thanks Hank, waiting for it …

Hank, I’m wondering about ordering a D4SV2 with the new constant current driver but with 4 identical emitters (no tint ramping). In this configuration, will the maximum output be lower than the standard D4SV2 with the same emitters?

Good point. Actual tint ramping probably isn’t very useful at all - what people are after is CCT ramping.

What I mean by this is changing the tint or duv (how far above or below the BBL) but keeping the CCT constant.

For example if you wanted to, you could ramp between some rosy 4000K sw40 219B LEDs and some green SST20 LEDs that are also 4000K but why would you?

Hank can you use a 7.5A noFET driver to power the 219BT-V1 diodes in the D4S V2 flashlight?
The question is about the D4S V2 in the two channel “channel ramping” version (2× 219B 2700K 7.5A and 2x XP-L HI 4000K 9A).

5A for two 219B diodes is a very delicate current. I would prefer 7.5A.
7.5A / 2 = 3.75A per diode
One 219BT-V1 diode can operate stably up to 4A.
http://i.imgur.com/bkodESs.jpg

D4SV2 - Cree XPL-HD 5000K/Osram CSLNM1.TG 6000K

Hi, your request is fine, please send us an email, contact@intl-outdoor.com

Hank is possible to let us know the current you use for each emitter?

1) SST20
2) XP-L HI
3) 219b
4) W1
5) W2
6) LH351D

Sure, apart from the 219B LED which is 5A per channel.
Other LEDs are all 9A per channel.

Hank thanks for your reply.

Another question is about the flashlight in a different configuration:
More and more people want to buy an Emisar D4Sv2 flashlight with four Osram W1 LEDs with a single channel driver with full stabilization and with an unlocked FET for Turbo as it is in the KR4 flashlight (9A Constant Current + Direct Drive). Hank are you able to prepare such a driver for D4S V2?

I see that user “CollectEverything” is also asking for the same configuration.

The D4SV2 with 4 Osram W1 LEDs is offered with an outdated driver (FET+ 3). I think many people would gladly buy a D4Sv2 flashlight with 4 Osram W1, W2 or XPL HI diodes if it had a driver like the KR4 has (9A CC + DD), because such a driver would give very good high brightness stabilization.

Picture of my flashlights for attention :slight_smile:
!!