AC InfinityAIRCOM S7, Quiet Cooling Fan System 12" Top-Exhaust for Receivers, Amps, DVR, AV Cabinet Components

I bought this for a receiver that runs a bit hot when pushed and it works very well at keeping the temps down.Noise is not really noticeable when amp and music is on. Build quality is good with multiple settings for fan speed and auto on/ off based on temps.The build quality is good and it’s a fairly thin unit that fits well in limited space.Great value for the price and I will be getting another for my other receivers throughout the house.

Very quiet and can tell the airflow is working, my equipment is already several degrees cooler. Looks sleek.

I needed something to cool off 3 power amps that I put in a cabinet. I noticed how hot the amps were getting and could smell the electronics heating up when I opened the cabinet door. Not good. I saw this fan on Amazon and it is exactly what I needed. I couldn't afford the larger T models but luckily AC Infinity makes the S7, very affordable and perfect for my needs. I placed the fan on top of the 3rd Amp in the cabinet and within a few minutes the heat had dissipated and the amps were cool as a cucumber. I set it to automatic and when the temp hits 88 degrees the fan kicks in and cools everything off. It is only an inch and a half tall and fits right on top on the 3rd Amp. It plugs into a normal wall outlet. Decent quality and I hope I get a few years out of it. It has 4 speeds, the 4th and highest speed is a little noisy so I set it to the 3rd speed which I cannot hear when watching TV. As the Amps cool off this fan will drop to the lower speeds as the temperature lowers in increments of 2 degrees. The 1st and 2nd speeds are silent. If your electronics are heating up you should definitely consider getting an S7.

Modern home receivers are still using a terrible method of amplification. Each channel is amplified, regardless of whether or not you are using it.So, if you've purchased that "11.2" AVR with all the watts, they are hot, and amped, even if you only actually have 2 speakers plugged in. What does this mean?LOADS of wasted power, which also means HEATYet, for whatever reason, AVR manufacturers also don't bother to (generally) actively cool. I had chosen to solve this by buying a cheap $20 desk fan and just pointing it at my AVR, but that fan died.So I took to amazon to see if anyone else had a more elegant solution. This is what I found, and it is exactly what I was looking for. The concept is simple, it's just some PC cooling fans in a plastic box with a fan controller and a simple LED. But it's priced fairly, it's quiet, and the features you don't need that are included with this are very nice.(I turned off the ambient LED lights, for example, using a simple button press)I had briefly considered buying PC fans and putting them in a box or something, but when I saw this, and saw the price, I did not hesitate to pull the trigger.My *ONLY* note that isn't 100% positive is that the images were a bit misleading about the size. If I had read the details, it wouldn't have been a shock, but I bought it at first sight, and was expecting it to roughly match the dimensions of my receiver. This unit is basically just two PC fans in size, so it doesn't cover the entire (or even most) of the top of my unit. However I set this to 50% fan speed, and could not hear it over ambient room noise, and when I put my hands on my AVR after about 30 seconds, it was already cool to the touch. PERFECT

I use this with my Denon X4700H, which runs very hot. It is configured in full auto mode, which means auto turn-on and auto fan speed. It does come on when video sources play, it does seem to regulate its fan speed, and it is quiet enough. However, it is not as quiet as the best 120mm PC fans.BUT, there is a ~3/8" air gap all around underneath, which allows it to pull air through that gap instead of through the receiver's air vents, which decreases efficiency dramatically. Automobile fans have shrouds that touch the radiator to prevent precisely this scenario. This device needs such a shroud design to be most effective.Once the return period expires, I will remove the feet and use weatherstripping tape around the perimeter to duplicate fan shroud functionality.UPDATE 4/7/2023My unit no longer runs on low speed, and the fans have become loud enough to hear during quiet passages. I may replace the fans with Noctua or just abandon the device and go back to silent passive cooling.

Mabe the 2nd best decision I made in 2024. My Denon gets hot. It's in a open stand. But it still gets very 🔥. I added this Unit to my avr. And there is a big difference in the heat. It stays cool. I would recommend this unit. This is the small one. But still works great 👍. Would rather had the bigger one. But for 50.00. I'll keep it. Great quality 👌. Low noise levels. Adjustable fan. Great buy!! Easy-to-use.