Drop.com $20 off - Lumintop Copper/Brass Tool for $10 - Discount not available as of 12/10/19

MH755+MH&50 were made in 2012 and all this is old stock. If you are interested in an objective standpoint, there is a curve called the harmon curve. https://www.innerfidelity.com/content/harman-tweaks-its-headphone-target-response

The paper is here: https://seanolive.blogspot.com/2015/11/factors-that-influence-listeners.html

The conclusion is most headphone makers have no idea what they're doing. KZ seduced me with its promise of replaceable cables, its nice sounding for bassheads, like the ATR and the ZS3, and ER4. But the cables on them suck, they are really heavy and don't go on your ears normally, they go over the top, if you like that style. I don't think you need to do too much research, they're super cheap! If you don't like them you're out $6 or so and you can get another IEM!

Nice job, details please!

They look identical best I remember. Its been a week or so since I was in it messing around. That review has some pretty useful info in it, thanks. I didn’t ever find out what exactly the 6 pin ic was either. I did find another driver where the PAM2803 was used and had a similar 6 pin ic. In that driver the 6 pin ic was a mode controller. Apparently it was made just to add modes to a led driver in a small package. Not certain that this 6 pin ic in this driver is the same but with no mcu on board it about has to be.
Mine has different markings on the 6 pin ic but I couldn’t find a datasheet for it either. The CFC6F is a boost controller and its very common in AA and AAA flashlight drivers that can also run li-ion batteries. It runs direct drive anything above the vf of the led. I changed the high resistor out for a much lower one and there was no current chnage using a AAA Eneloop. I went back and looked at some of my test data from the Sunwayman V11R which uses the same PAM2803 and the numbers from the input volatge to output current was on par with what I had tested before with the V11R driver. I wanted to see if I could increse the current but I think this is about max using a eneloop battery.
I think I got this labeled right.

You can check the resistance of each with a DMM. I think high measured less than .200 ohms (my DMM doesn’t measure very accuratly down that low).
Med measured around 1 ohm and low 10 ohms. Changing low to 100 to 500 ohms will give you a lower low. Mine has a 500 ohm and measured about .5 lumens.
These appear to be 0402 size resistors, tiny and fun to solder. Just be careful not to shoot it across the room when picking them up with tweezers, never to be seen again :person_facepalming: .

SMD technology invented jumping spider components.

I don’t mind neutral & slightly cool tints for short use EDC lights. I usually have 2 lights on me. And in a moment when my primary EDC is in another room or somewhere else, the Jet-U in my pocket does the trick. I also prefer tail switches, although I don’t mind twisty types that lend themselves to one handed use. I do agree that AAA lights shouldn’t be super bright. No reason for it in that small a form factor, due to very limited thermal management and reflector size. Plus, it’s a near field flashlight type. So max of the Lumintop is OK with me. Anyway, I’ve grown more curious to see how good it is, compared to my other AAA lights.

Very interesting. About headphone makers having no idea what they’re doing, I can believe that. I used to frequent AudioKarma back in the good ol’ Zilch days. Lots of very knowledgeable people were frequenting discussions. It would seem a lot of speaker makers have lots of egos who are more into doing something different to claim as their own, rather than doing what’s more expedient for good sound. They’ve lost their way from audio founding-father folks like Henry Kloss and James Lansing. And with headphones being so small, I wouldn’t be surprised if that segment is even more fraught with disinformation.

“”They’ve lost their way from audio founding-father folks like Henry Kloss and James Lansing. And with headphones being so small, I wouldn’t be surprised if that segment is even more fraught with disinformation.“”“”.

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Hey.
You want to listen to some real sounding music…
Try some early KEF Systems.

I had several starting with The Concerto’s.
B139Bass. with B110’s the mid’s),
With a T 27 topping them out.

Oak enclosures. lead or foam sheet lined. Bass Reflex.
Magic.
I ended up with a pr of Towers with Dual B139.
Dual B110’s and T27.
Reflex agin.
Custom tuned drivers and lead sheet lining.
7 ft tall 12in x 15in enclosures raised 2 in with corner pins.
on concrete floor. 210lbs each.
Driven with Leek amp’s And solid state turntable.
Still have most of my original reference LP’s. A lot.
Every spin on T-Table was recorded.
Back in the ’60’s they floated you off to heaven with Stravinsky.
Mahler. Sibelius. Jazz.
Music from the gods. Elvis wasn’t too bad either.
But no good for this modern electronics sound. Too slow.

I spent my youth in West Germany. UK Army,
att’d to UK/US Missile units.
We used to spend near every weekend up in the roof spaces of Deutche Factory’s listening to Ella, Dizzy, Satch, etc. Most weekend. Live.
The US military brought them all over.
All US music was free for all Overseas troops back in the ’50’s/’60’s.

I got a shipping update:

Hello Copper Tool,

Your item departed a shipping partner facility at 7:30 pm on November 21, 2019. This does not indicate receipt by the USPS or the actual mailing date.

Very interesting topic and the price at Drop is probably unbeatable!
Also very interesting to show how swapping resistor position can change mode sequence from LMH to MLH, MLH is my favorite but for the massdrop versions it is unfortunately LMH. I have always used the driver from Lumintop Tools for the Drop AAAs, of course this also works, but the tip here is cheaper :+1:
But I don’t buy AAA from Drop now because I already have too many with different LEDs :slight_smile:

Thanks cyclops, it works!

Are those Promotheus’ clips? You have amazing collection there.

no they are not Ti clips from darksucks
they are Stainless Steel Preon 2 clips

darksucks used to sell Ti clips for the Original Preon (made by Olight), that look similar, but they dont fit the Lumintop Tool

the clip that fits the Tool is for the Preon2, I buy then from this guy

Thanks Jon :+1:
Yes, these are Preon clips made of stainless steel, fit perfectly and are more stable than the originals.
But they only fit Bezel down which I don’t mind

they also fit bezel up, so the light can be clipped to a hat

to make the light work in that arrangement, a spacer is needed for the pill to contact the body tube. It can be a bent wire from a paper clip, or a copper washer, or whatever you find works for you…

Info regarding the preon clip and how to make it work at the head of the light so it can clip to a hat… it needs a conductive shim between the pill and the body…

the TiTool is slightly different:

These lights don’t support 10440 lithium?

why would you want to?

read the links in this post for more details

I got $10 for signing up.
Not bad, but not $20.

FB

You will get an email confirmation with the link to redeem $20 offer.

Thanks. Got it!
It also says that I have a $10 to spend on my first purchase of $50 or more.
It only seems to apply the $20 and not the $10. I was going to buy two to meet the $50 min and use both credits.

Also, no cart? You can’t select different items to get to a minimum value?

That seems odd.

FB

Jon_Slider and moderator. That’s incredibly useful information on the drivers. :+1:

This thread reminded me I joined drop.com back in Aug and had the $20 off coupon which was going to expires in 6 days. Good deal.