AC Infinity AIRCOM S9, Quiet Cooling Fan System 17" Top-Exhaust for Receivers, Amps, DVR, AV Cabinet Components

I bought these to cool down some network equipment, specifically my router and switch. What I like about this fan besides the price, which is very reasonable, is that the fans seem to be of good quality and very quiet. At 50% speed they are essentially inaudible. I also like the fact that I can select from four different speeds from low to high. I had never before but equipment from this manufacturer. However, I am impressed by the build quality and functionality of this fan, and I hope it will last me for a while.

I purchased an Aircom S9 to keep a recently repaired, near 30 year old JVC RX-905V cool after spending $150 to rebuild the power supply board after the low voltage capacitors on it blew and caused it to fail. Some people may (rightfully) question why anyone would spend that much to repair a 30 year old receiver instead of putting that money towards a new receiver. All I can say is, my JVC RX-905V is spotless, without imperfection and has served my now old ears very well for many years. Paired up with four Boston Acoustics CR-9's and an M&K 500w Subwoofer, it puts out music that my ears absolutely love and have been unable to find in any of the new, high-end units I tried. To even try and replace the features, functionality and sound it has with something else would mean spending well over $1,000. So replacing my receiver wasn't an option.So one day after getting my receiver back from the shop and feeling how hot it was getting, I happened to type "stereo cooler" in the search box here on Amazon Shopping. What?! There's such a thing?? Show me! And up popped the Aircom series of coolers with a lot of five star ratings. I read well over one hundred of them and placed my order.When my Aircom S9 arrived I quickly unpacked it, set it on top of my stereo, followed the easy peasey setup guide and turned my stereo on. I tried the automatic settings on the S9 letting the thermal settings cool my beloved JVC RX-905V and manually setting the fans to 3/4 speed to keep it cool. Both worked equally well and I ended up letting the thermal sensing control the cooling for my receiver.Now, I did have a small issue with the initial unit that I received from Amazon. The power supply ("wall wart" in amateur radio speak) generated a TON of RF noise which made receiving FM or AM radio signals on my receiver impossible. I contacted both Amazon and Aircom about the issue. Amazon's response was to ship a new unit right away. Not exactly what I wanted because I considered it a waste to ship an entire new unit when a replacement power supply would suffice.Aircom responded to my email inquiry within two hours and was profusely apologetic about the issue. They offered to send a new power supply (which is what I wanted) right away, all that I needed to supply to them was my Amazon order#. Amazon had already shipped a new unit so I opted to wait before proceeding with Aircom and informed them of such.I received a new Aircom S9 from Amazon and installed it quickly. I discovered the replacement has the exact same issue as the original and as I emailed the nice folks at Aircom about, their 1250mw power supply for their device puts out far too much heat in too small of a space and creates a lot of RF interference wiping out AM and FM reception due to lack of proper shielding. Since I'm an amateur radio guy, I rummaged through my parts bins and found a Fair-Rite Type 43 Toroid Choke and wrapped the power supply cable for the Aircom S9 around it 11 times.Problem solved, no more interference from the Aircom supplied Power Supply and now I'm a very happy camper.I genuinely like and appreciate the engineering that went into the Aircom S9 cooling device itself. It does the job well for my legacy receiver and I've no doubt it will help extend the life of it. Aesthetically, this is a very nice stereo cooler. It's quiet (even on high speed), looks great and does a great job keeping my receiver cool. I've been known to "exercise" my amp's capabilities and living in a townhome that means my neighbors occasionally hear me. LOL!My only "nit" is with the power supply that shops with it. It's poorly designed, generates too much heat and generates a ton of RF Interference. This is an easily fixable problem that I outlined in my email to Aircom hoping they pass it off to their engineers.If you're considering an Aircom S9 for your receiver/amplifier, this unit delivers the cool. Just do yourself a favor and order a Fair-Rite Type 43 Toroid along with it (those are easily found here on Amazon for about $8) and wrap the power cord around it 10-11 times to eliminate the interference. Then sit back and let the Aircom S9 keep your stereo receiver/amplifier nice and cool.Note: I purchased my Aircom S9 for my own personal use. I've not been asked to provide my review above by Aircom nor have I been compensated in any way for my review. I read so many good reviews about this unit that I felt I had to add my own and point out the flaws with the power supply that ship with it. I'm hopeful that Aircom incorporates the feedback I left them in email about the power supply and take steps to fix it. Their S9 device is a beautiful stereo cooler, it does a great job and it deserves a decent power supply.

Amazing Product, Highly Recommend to All !!!!!

what a brilliant idea! great product! looks and works great!

5 years ago I built a home theater, the wife's one requirement was concealed electronics. She didn't want boxes and wires everywhere. I built a home made equipment rack, and rigged up a ventilation system with a AC adapter and a bunch of computer fans. It was ugly but worked- kind of, until my Reciever died. Turned out it was a systemic problem with Onkyo AVRs, but it just emphasized the need for good ventilation. At the time there really wasn't much out there, and what was there was way overpriced for well packaged computer case fans.Fast forward, new theater setup. Components in a dedicated equipment room, lots of passive ventilation but I've always wondered if I shouldn't get a USB fan or two for my AMP and AVR. Then I found those fans. They look great. Seem solidly built, and are no-fuss in the setup. I peek in on them to time to time and they fire up after the equipment has been on for a few minutes. The tops of the components are nice and cool. They never got hot before but I would always check with my hand after a movie and they would be warm.Do I need them? Not sure, according to the manuals I have adequate ventilation space around each component, but cooler is better. These certainly don't hurt and they give me some piece of mind I'm doing what I can to preserve my investment. They are quiet, but you could probably hear them on high if you're in the same room as your equipment- but then again at that point you should be listening to a movie/TV show and I doubt you'd hear them over content.They move enough air I haven't seen them running full speed yet on the smart/auto setting where it dials up speed based on temp.I wish I had access to some of their other cabinet based products 5 years ago.Two features I'd like to see:12volt trigger. If the fan could run while the AVR is on all the time on low, and then ramp up as temp dictates that would be even better.2 daisy chain. I'm sure the one wall wart provides plenty of power for more than one unit. I have one on my amp and one on my AVR, it'd be nice to run off one wall wart.