AC Infinity MULTIFAN S7, Quiet Dual 120mm USB Fan

2/11/2021 UPDATE! Just reordered another S7 pair of fans! Andy, I have never met you, but I sure like these quiet fans and continue to recommend these!I have three of these fans in a media closet that is about the size of a tall refrigerator. Inside on shelves I have a high-powered AV receiver, a BluRay player, a Cable TV DVR, and other stuff that is producing an amazing amount of heat. When we built the house the wife wanted all AV equipment hidden, and as an Audiophile I wanted to be able to see what I want to see and hear what I want to hear in the Home theater seating area, but without any extraneous noise.Solution: I bought this item, and set two fans on top of the AV Receiver and a third identical fan on top of the cable box/DVR. Closed the door and waited an hour. Heat load dropped in half. I did not want to just move a hot air around in this large closet, so there is a passive vent installed in the sealing of the closet .... just a simple louvered floor vent like people have in their homes for floor heat. I just waited until the wife unit was out of the house and used one of her good steak knives to saw a hole in the drywall ceiling a drop this Lower cheap floor vent in:) Vacuum the mess up and done. These fans have been running flawlessly for two years now - and my wife, who could hear a mouse fart, has never noticed them.Quality/overall impression: Frankly, I thought these were two cheap to be really durable, but I bought them because at the time they were one of the few USB fan setups with a speed controller, no fan-boi disco light show LEDs, and with a CEC rating. The fans are very quiet, well-made, and have nice rubber anti-vibration feet.I was nervous about leaving cheap fans on 24-7 because the last thing I want to do is have a house fire because the units were wired up by orphaned slave labor recruited from a deplorable third world slum. But those fears were immediately put out of mind when I opened the box upon receipt. Beautiful packing, high quality wiring and fan construction.I am back on their site today reordering a second set to place on my desktop next to my computer workstation. I have a couple of good friends who work designing high end consumer electronics - the really pricy stuff. Both techs told me that placing a good quality cooling fan on an AV receiver can add several years working lifetime to such units.Therefore, I highly recommend these AC Infinity products. Just buy the dual fan setup, set the speed controller wherever you are comfortable and forget about them! (slower is a little quieter, but even on high these were very acceptable for my application) And like I said, I am back today repurchasing another set, which I should have done long ago:) Heat kills electronics. And if you are checking out cooling fans, you already know that stereos, AV equipment and computer gear can generate enough heat to slowly nuke your gear...Next possible project for these.... We have a couple of large walk in closets, which we keep the doors closed on because our ever-curious weenie dogs like to curl up in when we are not home. Anyway, I put the old computer fans, which were too noisy, in the closets to keep the air circulating and not smelling musty when we have been gone for awhile. One of these small fans would be much quieter, and would be strong enough to push all the air it needs to under the closet door to keep things smelling fresh in there - even after we have returned from a couple weeks vacation.

I was using a laptop cooling fan on my receiver, but needed it for.... my laptop! I was about to purchase another laptop fan to keep the receiver cool when I came across these and thought I would give them a try.These dual fans work great!At six feet, there is plenty of cord to plug it into an electrical outlet with the supplied USB power supply. There is also a power switch about half way along the power cord. My receiver has a USB connector so I just use that and the fans are powered automatically when the receiver is on.There is also another USB connector near the fans to connect more cooling fans. The instructions state that the power supply is good for four fans (I would assume it means four total and not four pair).Put out plenty of air with very low noise from the air moving through them. You can hear this noise when all is quiet. But if you're using the fans on something like a receiver of game console, then you most likely will have some sound going on as well. In that case, what little noise will not be heard.I have also not noticed and electrical interference while using the receiver with the fans on.They are not really stylish, but that is not the job they are intended to do. My receiver happens to be black like the fans so they don't stand out. I spaced them evenly on top to draw the heat out through the top vents, not blowing the air and dust into the receiver.I have not used them in this manner, but they may be ideal fans for stereos in a cabinet. One for each shelf area and holes could be cut for areas to allow the fans to exhaust heat. They have grilles mounted to both sides of the fan so no worries of much getting caught in the blades.If I ever need more cooling fans, I will be getting these again.

I bought these fans to cool my 700 watt surround sound system receiver that produces a lot of heat, so this review will be in depth and thorough. I ran two tests, the first with the receiver on top of the cabinet with open airflow, and the second inside the cabinet with closed airflow. I will also use an Infrared Laser thermometer to test temperatures inside of the receiver, from whence the heat is created and is at its hottest, especially on heat sinks and chips. My receiver is vented all over the top and bottom so peeking through isn't a problem.Test 1 - For test one the receiver will sit on top of the cabinet with open airflow. Since heat rises i have placed the fans on top of the receiver blowing upwards since there is no room underneath it and the weight of it will crush these two fans even though they are built pretty tough. With no fans my receiver idles around 150 F and at loud volume rises to 200ish F. That's just too much. Now i throw in the dual AC Infinity fans and start them out at low and move to medium and them high, taking temperatures as i go. On low speed, temperatures only came down to about 190 F, so still no cigar. On medium i got more result, down to 150 F, which is what i call the green zone. And on high, the temps came down to a whopping 98 F. Also, the only time i could hear noise from the fans was on high, so they are indeed quiet and powerful. The static pressure wasn't bad either, i have more powerful inside my PC but you can actually feel some air coming from these.Test 2 - For test two the receiver went inside the cabinet. I expected results to be worse in there due to the restriction of airflow but i was surprised. With the fans in the same place i started with low speed and measured 180 F inside the receiver. I'm guessing the fans get better directional airflow inside a cabinet without things like a ceiling fan interfering. Medium speed is where it got interesting, 125 F is what i measured from the laser. And then on high speed, i measured a chilling 88 F on the heat sink around the power supply inside the receiver, usually the hottest spot i can point at with the laser. Very impeccable results. The only thing is that after 30 - 45 minutes there is a build up of heat inside my entertainment cabinet, so must leave the glass door open for heat to escape while in use, but now i wont haft to worry about it catching fire.Conclusion - Totally awesome fans. Their performance is impeccable. Also, they construction is very very solid and nice. If my reciever was just a little smaller and lighter i could sit it on top of these and have them blowing from the bottom. The grills are child finger proof and easy to clean, and the wiring and switch has nice thick cable and strong plastic. And the extra female USB port is great for when you need that third fan, or another set of AC Infinity fans. The only thing i could see improving here, other than the obvious like RPM's and static pressure, is making a true AC wall jack powered version of these with the double - triple - quadruple fan setup for devices that don't have USB ports. I know AC Inf. makes AC powered fans but they're all singles. Need multiples! I would highly recommend tese fans to anyone who needs extra cooling for their non-desktop PC electronic devices. You wont be disappointed.

Super quiet. Airflow seems low but should work fine. I use them in a cabinet with mesh panels that I hide a PC tower in. Used for ambient airflow. Set them to high and let em buck.

This fan was pretty much what the doctor ordered for my Pioneer Elite SC25. After 6 years of ownership it had developed a shutting on and off issue which was intermittent but the last year the issue really worsenned and would not stay on for longer than 30 minutes or so. I was hunting for a replacement but finding the feature set of that receiver with a class D amp is merely impossible under 3k these days. I use this amp for 2.1 channel sound at high volumes. I bought this multifan S7 from AC Infinity as a last effort to salvage it (amazing sound) and save me some coin and the S7 does the job. I have placed one fan blowing in and one out and it keeps the receiver way cooler. No shutting down issues after about 5 hours of testing with up to 2 continuous hours of use. Needless to say I am very happy and richer as I was willing to spend a large amount of cash to replicate the sound of the sc25. Definitely give this a try if you have cooling needs. Also use it even if you don't becuase it is a preventive measure to cooking your electronics (as i likely did) prematurely and potentially shortening its life. The design of these things by the way is solid, nothing cheap here. Fan is way quiet and throws a lot of air. It is also efficient, the speed selector works well (and makes a difference) and gets powered by the USB plug on the receiver itself which is always powered!Sweet action! Give it a go!

Works as expected. It keeps my equipment much cooler without added noise.

I initially purchased another brand to help me cool my receiver. It came in a plain box, safely cushioned, with no instructions but, it worked well enough delivering air at a single speed.Upon learning more on the AC Infinity brand and features especially the UL listing, the dual ball bearings and the fact that it is an American company I decided to buy it and I could not be happier!First, the packaging is superb and the accompanying literature is professionally presented in booklet form with additional company information suggesting, pride in craftsmanship, which is clearly shown in the product, as well from the speed controller to the USB to the company logo placed on top of the fans. Even at the higher speed, these fans are quiet and with a two year warranty you cannot go wrong.If you care about your home theater, invest the additional $4 to $5 dollars in getting a better product.

These fans are great for ensuring circulation, cooling, and minimizing fan noise for your PS4.I’ll list some PRO TIPS below (pun intended).READ BELOW FOR THE TIPS.Though it’s completely normal for your PS4 to get medium-hot, it never hurts to maximize cooling for any electronic... ESPECIALLY in enclosed places.When the system is cooler, the internal fan don’t need to work as hard, maximizing efficiency and naturally prolonging the life expectancy and overall reducing its noise.These fans are super quiet and by keeping the system cool, the internal fans don’t need to work half as hard, thus reducing overall noise significantly... Which is a great bonus.With these fans on high setting, placed like in my photos, my PS4 never exceeds a mild warmth.These fans are versatile, allowing you to link more fans if you’d like, and allowing you to set them up however you’d like depending on your setting.NOW FOR THE TIPS:1. Do this first!You’re probably aiming to reduce noise and/or keep the system as cool as possible, so I’d HIGHLY recommend to begin by dusting out the internal fan just for the added benefit. It’s very simple with the PS4 PRO. Simply pop off the top cover and air dust or lightly wipe off the fans and place the cover back in. (Refer to how-to videos online). This’ll keep the internal fans running efficiently.2. USB tips:(1). There is a hidden USB port in the BACK of the PS4 PRO use that one to keep it out of the way and to leave your front two USB ports free.(It can turn on and off with your PS4)(2). You’re likely using a 4K TV or any TV with many ports these days, so chances are you have a USB port in the back of your TV, that is another convienent option for you. I use this option.(It can turn on and off with your TV)(3). You can simply use an adapter to plug into the wall, but you’ll have to remember to turn it off and on manually.3. Fan placements:(The side that blows out is the side where the wire is visible)The placements I personally recommend and use myself (pictured) is one fan on the bottom holding up the PS4, blowing UP onto the bottom of the PS4 and one fan sitting on top blowing DOWN onto the PS4.Creating an external fan sandwich.Having the PS4 lifted will also allow the bottom to get some proper air flow.(I found a foam and plastic piece that I placed under the front of the PS4 as well, just to make sure the PS4 sits comfortably & with better balance.. I’d recommend something like that too).Side note: if you’re gonna set it up like this, put something under the feet of the fans if you’re placing it on wood.. Otherwise, it could leave light rings in the wood from the pressure.Alternative placements:(1). You can sit up one of the fans so it blows right into the vents on the right side of the PS4, this’ll help get cold air into your PS4. Not a bad option.(2). You can also sit up a fan at the back of the PS4 (where air escapes from the system), blowing air AWAY from the PS4 - helping suck the air out.But honestly, i think the other methods are more effective. I’d probably only recommend this one if your PS4 is in an enclosed area and you want to help the hot air escape from the area (like fan cutouts at the back of your enclosed area). Otherwise, the other methods work better in my experience.If you found this review helpful, please thumbs up this review! Thank you.

Acquistate assieme al suo controller per il raffreddamento di un sito amplificatore all'interno di un mobile. Davvero sorprendente la differenza di temperatura all'interno, si accendono automaticamente al raggiungimento di una determinata a temperatura. Consiglio assolutamente questo prodotto.

Ürünü ses sistemime ilave soğutma sağlaması için aldım ve gerçekten etkisini hemen gösterdi. Çift fanlı versiyonu en hızlı kademede bile rahatsız etmiyor ve üfleme hızları da gayet tatmin edici. Mataryel tasarımları kalitesini belli ediyor.

Probably the most efficient USB fans out there. Good to cool AV or server racks that are not in their dedicated rooms (which is really what most people have to work with). There should be more AC Infinitys!

Extremely silent and very very well built cooling fans. They have vibration dampening rubber feeti very clever.I created my own cooling box for my external ssd enclosures. The fan at the bottom blows air to the box and the one on the top of the box extracts hot air from the box. This system works perfectly. I put my external ssds in this box and I was able to reduce the temperature more than 10 celcius when using my external ssds at their peak performances when editing multiple photos and especially videos.They are attached to each other and both of them are powered by one usb-a connecter. I plug my iPads charger or I connect to my usb-c hub and it works perfectly. You can adjust the speed but I generally use it at low or medium speed. At these speeds, you do not hear it running. I am so happy with my purchase.One wish; they are connected to each other permanently, I wish I could use them separately when needed.

Tenía duda para comprar estos ventiladores ya que donde juego es un cuarto pequeño y no tengo mucha ventilación hace que la consola se ponga aún más caliente de lo normal, tenía dudas de comprar estos ventiladores porque no había reseñas que dijeran si de verdad había diferencia cuando los instalaban en consolas y valla sorpresa me llevé de un 100% que se calentaba sin dudas le quita el 85% del calentamiento, no hacen nada nada de ruido son muy silenciosos muy feliz por está gran compra y muy baratos recomendado.