AC Infinity AIRCOM T9, Quiet Cooling Fan System 17" Top-Exhaust for Receivers, Amps, DVR, AV Cabinet Components

This cooling unit is quiet and easily cools a Yamaha Aventage receiver. Before using this, the top felt very warm even with a completely open rack that it sets on. Temp gun readings prior to the Aircom T9 indicated 92°F at startup quickly rising to 116°F in a 68°F room with a nearby celling fan running. Now, the temperature hovers around 75°F with the startup temp set at 82. The fans rarely go above the lowest speed to achieve this.Although the coolers look like they were designed to match Marantz units, they look great and are sized perfectly for the cyclops Yamahas as well. Though I wish it had four internal fans, it cools excellent with three and has plenty of power to spare.Many Onkyo receivers are fan cooled internally with a single under performing fan. If you want it properly cooled so that it doesn't die prematurely, get an Aircom. My last Onkyo shuts down because it's temp circuit failed. And a single fan allows it to get warm quickly and stay warm. I believe an Aircom would solve that and I'd still be running Onkyo. Due to cost and lack of qualified service centers, I discovered Aircom and I'm confident I won't be dealing with thermal failures.Also, after reading other reviews from years past, it appears that Aircom listens to their customers regarding design improvement and upgrades. All in all, it seems to be a solid product. It arrived quickly, packed very securely. The instructions were clear and easy to understand.

Product: AC Infinity AIRCOM T9I bought the AC Infinity AIRCOM T9 to cool down my Parasound amp. Sitting out in the room, with an ambient air temperature of about 79 degrees F, the amp's heat sinks were measuring around 120 degrees F. Hot to the touch. I started looking for a cooling solution and when I came across the AIRCOM T9, I thought this product might work. Better than building my own...The AIRCOM T9 does work and it works really well... amazingly so. On the lowest fan speed setting (with my mods in place), the AIRCOM T9 front panel temperature reports about 12-14 degrees above ambient. My digital temperature gun confirms the T9’s front panel temperature readout within a degree. This is a vast improvement over the 40 degrees F above ambient I was measuring at the heat sink. Keep in mind the T9 is measuring air temp (bottom side of the T9) where as the digital temperature gun measures something solid, like the heatsink and the metal discharge grate around the fans.If I turn the fan speed to a higher setting, the front panel temperature reading drops even more, but as expected, the fan noise increases. At the fastest speed setting, I saw a 5, 7 degree difference from ambient. But the fan noise was too much for me, even though the music obscures most of the fan noise. With the fan set to the third lowest setting (out of 6 possible settings), the fan noise level is much more agreeable. When I discovered the lowest fan setting worked like a champ, I just left it at the lowest fan setting. At the lowest fan speed setting, the fan noise is present, but its nearly, almost inaudible - consider it essentially inaudible. It’s quiet enough that guest won’t hear it when the music isn't playing and when the music is playing, for sure, the fan noise isn't heard. Heck, when the music isn’t playing I don’t notice it anymore, and I've got the critical ear.If either the AIRCOM T9 or the AIRCOM S9 (both have essentially the same specs) is used within a closed furniture cabinet, like most entertainment center’s people buy, I suspect the highest, fastest fan speed would not be heard as its not that loud.The AIRCOM T9 front panel display can be turned off. When on, its a bit bright in a dark room. Its fine for me.The mods I made to the T9... around the perimeter, on the underside, I added a “D” shaped 5/16” x 23/64” Auto and Marine Rubber Weatherseal, a black colored EPDM rubber product I found at Lowes. I left the T9’s feet in place and when I placed the T9 on a glass table top, I could see all the seals were touching the glass surface sufficiently, deforming enough to create a sealed chamber in order to pull the air through the amp without any front, rear or side leakage. This is probably why the lowest fan speed setting works so well for me.One thing I noted... the fans are slow to change speed, meaning the spin up and the spin down time is gradual instead of an instant change of speed like with my computer fans. I think this is a positive aspect... not becoming aware of the fan speed change.Keep in mind... the AIRCOM T9 has a temperature probe protruding 1, 2 mm on the bottom side. You can feel it with your finger, located around the middle fan... don’t knock it off.The downside to the AIRCOM T9? Another wall wart to deal with! Annoying, but its a small price to pay for the AIRCOM T9’s performance.The ambient air temperature in the photograph is around 75 degrees F. Without the AIRCOM T9, the heatsinks would measure around 118, 120 degrees F. With the AIRCOM T9, 87 degrees F is great. The highest temp I've ever measured at the heatsinks was around 126 degrees F, and to be CLEAR, WITHOUT the T9 in place and doing its cooling thing..The construction of the AIRCOM T9 is really good. Impressive construction quality. The packing box is solid enough for USPS/UPS shipping, though Amazon put it in another box. Thanks Amazon!So, would I buy the AIRCOM T9 again? Yes, but not for my amps. I think the AIRCOM S9 would work just fine. I really don’t need the features of the programmable AIRCOM T9 for my amps. The amps I’ve owned get hot and stay hot, regardless if they are idling or playing music. A constant flow of air through the amp’s heat sinks is all I need. I want thermal stability from the constant air flow. I don’t want the fans turning on and off. Constant airflow with little noise is the goal.Yeah, I’m happy with the T9! I’d probably be happy with the S9 as well. I do like the T9’s front panel display... Instant feedback!Update: 8/17/18I continue to be very pleased with my purchase of the T9. Because of the cooling it is providing, I think my amp has a "better sound" than without the T9 cooling. Yeah, I know... all of my imaginary audio voices are telling me so. I do think the amp will probably live longer.. heat's a real killer for electronics.I think some clarity is needed about noise... on the slowest fan speed setting I use, in a quiet room without any music playing, I can hear the fans. Mind you, my amp sits out in the open without anything to block the fan noise. See the pictures. I've caught myself wondering what that "noise" was, and when I realized it was the fans from the T9, I said, "Oh, OK... 4 larger, slower turning fans would have been better". Still, the noise level is really low, and when I play any music at a low volume settings, I do not notice the fan noise.Regardless, still very, very happy with this purchase. All of my imaginary audio voices are telling me I brilliant!

Great product! I don't usually write many reviews but this impressed me that much I felt like I needed to. I use this on my Denon X2200W. I had issues with the AVR going into protection mode when I pushed it really hard. Action movies such as Transformers would give the Denon a work out. The last time it shut down the top of the receiver was very hot to the touch. If you use this unit on SMART it kicks on when it reads 10 degrees below the set point. I leave mine set at 95, and therefore starts up at 85. Given its location and the room it usually registers at 80-83 when not being used. I re-watched movies that caused it to shut down and never had a problem. Most movies elevate the temp to about 87 degrees and its never been above 90. The fan is usually only ever at the first or second speed and is not audible from the listening area. After two movies and pushing the AVR as hard as I could and placing my hand in the middle of the top of the receiver It was lightly warm at best and certainly not burning hot like before. It looks cool too (no pun intended). I did purchase this model because it had the highest air flow but its never used more than the first two speeds out of six. So if you're debating on this or the T8 and need/prefer the rear exhaust I doubt you'd need the extra air movement this one can provide. Sturdy constructions, well packaged, and works like a charm. Highly recommended.