CW,
Great review and nice thread. Just received a couple of these to try on someone's recommendation. Thought I might add a few observations.
First, let me say that I am a dedicated higher voltage vapor. I do not even have any 3.7 volt devices (other than a Bartleby box I keep for sentimental value - first "mod"). I have also been a dedicated user of the Joye 302 atty in the 5 volts range and primarily a tobacco(s) and tobacco menthol(s) vapor. In the last couple of months, I have shifted into cartos and mostly one particular DIY (non-bacco) juice. I have found that my baccos/menthols are still happiest in the Joye 302 attys as they just taste better in that atty. But I am also finding the fruitier juice I am vaping now is much better in cartos.
I have tried most cartos on the market today and find my favorite is made by Boge. Boge continuously changes some of their product numbers. This particular carto is identified at NHaler as "801 carto" and Ikenvape as "fusion". It has the tube of 510 but a slightly wider collar at the base for its 801 threads. Ωs are in the 2.6-3.1 range with most metering at 2.8 or 2.9
The EMDCC is the first carto I have tried that delivers the same flavor as the Boge 801/fusion (current part number JCA302 - formerly JKY302). The EMDCC also produces immense vapor. The EMDCC can be used on any 510 device with a 510 to ego adapter (EMDCC uses the ego cone threads).
Dual coils are unique in that they are generally 2 much higher Ohms coils connected in parallel and the parallel connection causes them to be read on meters as LR (1.6Ω in this case). For any who may not already know, LR attys/cartos were originally designed to simulate/imitate the higher voltage vaping experience while using low voltage (8-ish+ watts from 3.7 volts). Many people like them and some even prefer them to higher Ωs on higher voltages. Personally, I find LR tends to heat too quickly for my tastes and just prefer higher-voltage/higher-Ωs WATTS compared to the same WATTS on LR/LV.
Another interesting aspect of dual coils, again - for those who may not know - is they can perform amazingly well at higher volts (after all, they are 2 higher Ωs coils). So, of course, as soon as I received my EMDCC(s) I had to try them at higher volts. As Darwin is my primary and preferred device, EMDCC first went on Darwin. It perfoms very well at higher Watts settings. The max watts setting on Darwin is 12.7 watts and this produces about 4.6/4.7 volts on Darwin due to Darwin's Power Management features (reads atty/carto Ωs many many times each second and automatically/constantly adjusts volts and amps - to achieve user-set WATTS level - based on the Ωs of the atty/carto). While Darwin can certainly push much higher voltage, the Power Management reads the EMDCC Ωs at 1.6 and provides power accordingly. The vapor is the thickest I have experienced and flavor is very good.
Next step was on unregulated 6V on GGTB. For this I use two of the AW LifePO4 3.0 volts batts. This stepped up the vapor a little bit but not too much beyond the Darwin. So, I put an under-laod test on the EMDCC/6V combo to find that under-load it is driving 4.7 volts (from 6.4V unloaded). That 1.7 voltage drop-off is a substantial drop but understandable. Dual coil (parallel) demands extremely high Amps. This combo drained the 500 mAh LifePO4 batts in about 1.5 hours.
Next experiment was to try on the same unregulated GGTB with 2x AW IMR 16340. These are 3.7 volt batts that come off charger at 4.2 so stacked in series produces 8.4 unloaded. Under load reading is 5.4 volts. Again, HUGE under-load drop. This one surprised me a bit more as IMR batts have dramatically higher max Amps draw capacity. The vapor production is almost chokingly thick. Full flavor and no burning taste. I can only take about a 2 second draw and get more vapor than I have ever experienced. It is the most intense vaping I have experienced to date. Even tho the AW IMR 16340 is only 550 mAh, I am getting about 3 hours of batts life. I attribute this batt life difference (compared to the LifePO4s) to the much higher max amp draw capacity of the IMR batts.
WARNINGS, If you are a 3.7 vapor with little or no HV experience, I would NOT recommend these High Voltage combinations! However, for those experienced with HV vaping, this is certainly an interesting experience. I have tried other dual coils on 6V and find they can perform wonderfully. This EMDCC on HV out-performs them all (so far). However, take note, this level of intense vaping will use LOTS of juice. You can easily vape the juice faster than it can wick. So, after a few hits - put it down for a few minutes. I also find I am topping off the carto much more often than one would expect to on a 4ml capacity carto. Final warning: Due to the extremely high Amps demand of Daul Coils, these WILL DRAIN BATTS MUCH FASTER THAN SINGLE COILS (this applies to any/all batteries).
Using this on Darwin at 4.7 volts is still an AWESOME vaping experience, a bit less intense than the IMR unregulated and requires less frequent top-off(s) but still fantastic vaping. Due to Darwin's unprecedented battery power and safety features, I will use the EMDCC on Darwin. Occasionally, if I want a REALLY INTENSE vaping experience, I may (RARELY) go back to the unregulated GGTB and IMRs combo but this is EXTREMELY INTENSE VAPING and I do NOT recommend it for ANY OTHER THAN THE MOST ADVANCED AND EXPERIENCED VAPOR(S).
I do not care for the soft rubber mouthpiece at all. So, I will try Phantom's recommendation and see if I can find some of the Ego Mega Atty dummy carts. If those are the same shiny hard black plastic whistle-tips material, as used on the 801 series attys and the 901 carts, that is the best mouth-piece material IMHO. So far it is one of only 2 mouth-piece materials I have seen that do not get gunky/lip-cheese. Hopefully, I'll find that the Ego Mega dummy carts are that same hard shiny black plastic material and I think that will make the EMDCC MUCH better. {I wish I could find a 510 whistle-tip made out of that material that would fit regular carto tubes (510/808 - same size as my favored Boge 801/fusion)}.
