The CLT4 is the latest offering from the well known Chinese manufacturer, Infinite. They started off as a company known for their well-made “clones”, but about two years ago they ventured into the authentic world with the first iteration of the CLT atomizer. The first three CLT RDAs were mainly geared toward cloud chasers, but not too long ago, they released the CLT3 Mini RDA which was designed for both flavor and clouds. The CLT4 definitely has the most advanced design of all it’s brethren with its 2-in-1 deck design and bottom and side airflow, so let’s dive in for a closer look.
- CLT4 RDA with Twisted-Messes²-style posts pre-installed
- PEI material drip tip
- Velocity-style posts
- Allen wrench
- 2 extra post screws
- 2 extra deck o-rings
- Extra drip tip o-ring
- Extra airflow controller o-ring
- 2-in-1 deck design
- Velocity-style posts
- Twisted Messes²-style posts
- Adjustable bottom and side airflow
- PEI material drip tip for high temperature resistance and corrosion protection
- PEEK insulator
- Silver-plated 510
- 23 mm diameter
- 5 mm height without drip tip
- 44 mm height with drip tip
- 4 mm x 2 mm bottom airflow slot leads to a 3.25 mm hole
- 5 mm x 2 mm airflow slot
- 3 mm holes on horizontally-oriented posts
- 3 mm x 2.5 mm slots on Velocity-style posts
- 5 mm deep juice well
- 12 mm wide bore drip tip
Machining/Fit and Finish
The machining is quite good and above average for a $30 atomizer. It stands up to the quality of GeekVape’s gear which is a testament to how well this thing is made. The tolerances are pretty good and nothing seems to be too tight or too loose. There were no defects that I could find and absolutely no machine oil either. It’s an all around well-made product that could pass as a $50 atomizer.
This is the most innovative part of this RDA, there are two build decks to choose from. It arrives from the factory with a two-post design with two 3 mm post-holes oriented horizontally, just like the Twisted Messes² RDA. You also have the option to remove those posts and install Velocity-style posts with 3 mm by 2.5 mm slots. This is a pretty cool concept because opens up a variety of build options. I found that switching between the different posts was very simple with no issues at all. To swap the posts, unscrew the 510 pin which will allow the positive-post to be removed. Then turn the bottom airflow controller to reveal the phillips head screw that holds the negative-post in. The only part that may cause a little bit of hassle is installing the negative-post. The method I found to be the easiest was to hold the screw in place with a phillips head screwdriver and twist the post until the threads catch. Then seat the post in place and finish the job by tightening the screw. Both posts are a squared off to prevent spinning which is a nice, but not unusual feature.
Ease of Build
Building the CLT4 is very easy in both deck configurations. I personally prefer the Velocity-style posts since it doesn’t require any lead bending, but the horizontal posts are a nice addition. The connection created by the grub screws is good enough to allow you to break the leads by twisting them and I never had any issues with clipped leads.
The juice well is only 5 mm deep which seems quite shallow for an atomizer this tall. The amount of juice it consumes is very build dependent, but in most scenarios, you won’t be able to take too many hits without re-dripping. I really wish they would’ve either made the juice well deeper or shortened the top cap to reduce the volume of the chamber. A few times, I ended up with juice on the top of my mod when dripping into the drip tip, so be careful when dripping without pulling the top cap off.
Airflow and Controller
The airflow controller is simple, yet odd at the same time. Both the side and the bottom airflow is completely adjustable, but adjusting the bottom airflow is a bit annoying. You must remove the atomizer from your mod and turn the bottom airflow adjustment ring. It’s cool because it doesn’t take anything away from the looks, but annoying if you like to fiddle with the airflow frequently. On the other hand, adjusting the side airflow is extremely simple. The side airflow controller is a sleeve that press fits into the outer barrel and has slots that align with notches in the drip tip. To adjust it, simply turn the drip tip. On the other hand, this also means you can’t use your own drip tip, so it’s a gift and a curse. There also isn’t a single coil option.
Wide open, it’s extremely airy with a small amount of restriction; I’ve used RDAs with more airflow in the past, but wide open, it’s about the same as the United Chaos RDA wide open. It can also be closed down for a mouth-to-lung hit as well, but if I’m being honest, that’s not what this thing is meant for. With that said, just about anyone should be able to dial in a draw that best suits them.
I think this atomizer looks great except for it’s obnoxious height. The outer barrel is very clean looking and the branding on the base of the deck is minimal and doesn’t shout at you whatsoever; you may not even notice it the first time you pick it up. The supplied drip tip has that Ultem look that seems to be very popular these days and the lip on the upper edge is a nice touch. Personally, I think it would look (and perform) better if it wasn’t so tall.
This atomizer is definitely aimed more toward the cloud chasers due to the large chamber, wide bore drip tip and style of airflow. With a simple build using only the bottom airflow, the vape is very cool and the flavor is muted due to the large chamber. With a higher power dual coil build, the flavor is a bit better, but it’s still a pretty cool vape. I was able to take long drags at 150 watts with no issues unlike any other atomizer I’ve ever used. This has to do with how well the bottom and side airflow combine to cool the coils. For a dual coil build, I recommend placing the coils downward slightly so the side airflow hits the top half of the coil, and directly over the bottom airflow inlet to maximize the cooling effect. This works best because you’re allowing the side airflow to cool the top half of the coil while the bottom airflow cools the bottom half.
In order to get some heat, I recommend using the Velocity-style posts for horizontally-stacked quad coil build. My favorite was a quad 24g Nichrome-80, 12.5 wraps around a 3 mm screwdriver that came out to around 0.22 ohms. Place the bottom coil as close to the bottom airflow inlet as possible and the top coil as close to the bottom coil without creating a short. In this configuration, the vape is much hotter and more flavorful than any of the dual coil builds I put in it. At 82 watts, this build was about as hot as a dual 24g Nichrome-80, 12.5 wraps around a 3mm screwdriver build at 150 watts with the ramp up time being about the same. While the flavor was better, I would say the vapor production is better in a dual coil setup because of the way the dual airflow design cools the coils.
Overall, the flavor was good, but nothing spectacular. Where I was really impressed was the vapor production. In a dual coil configuration, the coils stay cool enough to allow you to crank the power up without resulting in a scorching hot vape making it perfect for cloud chasing.
- Phenomenal vapor production in a dual coil setup
- Swappable post design allows for a large variety of builds
- Machining is very good for an atomizer in this price range
- Rectangular posts prevent spinning
- Side airflow controller allows for simple adjustments
- Unnecessarily large chamber
- Can be a bit leaky
- Bottom airflow controller is a bit annoying to adjust
- Can’t use your own drip tip
- No single coil option
Overall, the Infinite CLT4 is definitely the best in the line of their CLT RDAs. The machining is on par with everything else they’ve done and the innovative 2-in-1 deck design is a nice feature to have if you’re into experimenting with different builds. However, it can be a bit leaky and the bottom airflow controller cannot be adjusted without removing the atomizer from the mod. With that said, if you’re into chasing clouds, then I highly recommend picking this one up since it’s one of the best out there under the $60 mark. If it’s the flavor that keeps you vaping, I suggest passing on this one; the chamber is just too large to condense the vapor enough to create great flavor.