--- product_id: 52124108 title: "AIRCOM S9, Quiet Cooling Fan System 43 cm" brand: "ac infinity" price: "11075646₫" currency: VND in_stock: true reviews_count: 13 category: "Ac Infinity" url: https://www.desertcart.vn/products/52124108-aircom-s9-quiet-cooling-fan-system-43-cm store_origin: VN region: Vietnam --- # 21 dBA ultra-quiet noise 3 dual-ball bearing PWM fans 210 CFM airflow AIRCOM S9, Quiet Cooling Fan System 43 cm **Brand:** ac infinity **Price:** 11075646₫ **Availability:** ✅ In Stock ## Summary > ❄️ Keep your AV gear cool and your vibe cooler! ## Quick Answers - **What is this?** AIRCOM S9, Quiet Cooling Fan System 43 cm by ac infinity - **How much does it cost?** 11075646₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/52124108-aircom-s9-quiet-cooling-fan-system-43-cm) ## Best For - ac infinity enthusiasts ## Why This Product - Trusted ac infinity brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **UK-Ready Power Plug:** Plug-and-play with UK voltage compatibility—no adapters needed - • **Smart Thermal Control:** Auto-starts at 31°C, adapts fan speed for optimal cooling - • **Whisper-Quiet Operation:** Barely audible 21 dBA noise keeps your space distraction-free - • **Robust Triple-Fan Design:** Three PWM-controlled dual-ball bearing fans ensure consistent airflow - • **Sleek, Space-Savvy Build:** Slim 17-inch profile fits perfectly atop AV gear without bulk ## Overview The AC Infinity AIRCOM S9 is a premium 43 cm quiet cooling fan system engineered to protect your AV components like receivers, amplifiers, and DVRs from overheating. Featuring three PWM-controlled dual-ball bearing fans delivering 210 CFM airflow at a whisper-quiet 21 dBA, it offers smart thermal triggers and four speed settings for adaptive cooling. Its slim design fits seamlessly atop your equipment, while the included UK power plug ensures hassle-free setup. Ideal for professionals who demand performance and peace of mind in their AV setups. ## Description AC Infinity AIRCOM S9, Quiet Cooling Fan System 43 cm | for Receivers, Amps, DVR, AV Cabinet Components, 17-Inch : desertcart.co.uk: Business, Industry & Science Review: Perfect for cooling my Marantz pm7000n amplifier - Recently I noticed that my Marantz amplifier was getting hot. Marantz suggest that inch clearance is given at the top of the amplifier or use a fan. Since I'm unable due to space to provide the recommended clearance I opted to go for a fan solution. The AC Infinity works perfectly; cooling the amp with very little noise. Easy to install and use, with good documentation. Also came in a well padded box. I have it currently set to SMART mode. In this mode the fans start when the temperature reaches around 88 degrees F (31 Degrees C), then shuts off below 84 degrees F (29 Degrees C). The fan speed increase every 2 degrees above 88, but currently it have not risen above 88, and seems to be doing a good job at cooling. The S7 is smaller than the amp, may be the larger unit would be better for looks, but it is almost double the price of the S7. My unit came with UK plug power supply, so I did not need a US to UK adapter as others have stated. At low fan speed, I can't hear any fan noise. The unit when sat on top of the amp sucks air through the amp in the direction that normal convection cooling occurs. This is correct as you don't want it to blow air into the unit against the follow of the rising heat. So far the unit is performing perfectly. I wish Marantz had designed the amp with a built in fan! Review: Very impressive product, highly recommended - My Denon AVC-X4700H runs hot, almost disturbingly hot. My 4 ohm speakers only deliver 87db per watt so are a tough drive, and whilst my front speakers are driven by another amp, the AV amp still drives another 4 speakers and the subwoofer. The S9 has proved to be fantastic at reducing the running temperatures significantly and the auto temperature control function means you can leave it to its own devices which is a real plus. It turns on/off as required so no hassle there. It generally runs on setting one which is only just audible, but ramps up to setting 2 out of 3 under load. Overall I'm very pleased with it, its built well, looks good, and is well priced for what it offers. If you own a Denon/Marantz AV amp then these things are a great addition and the temperature reduction will likely significantly increase the product life from excessive heat wear & tear. ## Features - A quiet fan system designed for cooling receivers, game consoles, and other AV components. - Protects components from overheating, performance issues, and shortened lifespans. - Programming features two thermal trigger modes and four speed control options. - Contains three dual-ball bearing fans with PWM-controlled motors to minimize noise. - Dimensions: 17 x 13.5 x 1.5 in. | Exhaust: Top | Airflow: 210 CFM | Noise: 21 dBA - This product is equipped with a Type-G power plug and is compatible with the voltage commonly used in the United Kingdom. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01LVUWOBX | | Air Flow Capacity | 210 Cubic Feet Per Minute | | Best Sellers Rank | 29,359 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 124 in Electronic Cooling Fans | | Brand | AC Infinity | | Compatible Devices | Amplifier, DVR, Receiver | | Cooling Method | Air | | Cooling method | Air | | Country Of Origin | China | | Customer Reviews | 4.7 out of 5 stars 2,841 Reviews | | Item Dimensions L x W x H | 43.2L x 34.3W x 3.8H centimetres | | Item Highlight | for Receivers, Amps, DVR, AV Cabinet Components, 17-Inch | | Manufacturer | AC Infinity | | Manufacturer Part Number | AI-ACS9 | | Material | Alloy Steel | | Max Rotational Speed | 6700 RPM | | Model Number | AI-ACS9 | | Noise Level | 21 Decibels | | Number of Items | 3 | | Number of Packs | 1 | | Power Connector Type | SATA/Molex or 3-pin/4-pin | | Power connector type | SATA/Molex or 3-pin/4-pin | | Product dimensions | 43.2L x 34.3W x 3.8H centimetres | | UPC | 854759004655 | | Unit Count | 1.0 count | | Voltage | 12 Volts | | Wattage | 35 watts | ## Product Details - **Brand:** AC Infinity - **Compatible devices:** Amplifier, DVR, Receiver - **Cooling method:** Air - **Material:** Alloy Steel - **Maximum rotational speed:** 6700 RPM - **Noise level:** 21 Decibels - **Power connector type:** SATA/Molex or 3-pin/4-pin - **Product dimensions:** 43.2L x 34.3W x 3.8H centimetres - **Voltage:** 12 Volts - **Wattage:** 35 watts ## Images ![AIRCOM S9, Quiet Cooling Fan System 43 cm - Image 1](https://m.media-amazon.com/images/I/51iWLsgbqXL.jpg) ## Questions & Answers **Q: i have a denon avr s940h reciever in an enclosed cabinet with 4 inches from top of reciever to top of cabinet. Will the s9 or t9 work?** A: 4" from the top of your receiver means only 2.5" from the top of the AIRCOM S9. This may be too little clearance for a top-exhaust unit. You say "enclosed cabinet." I assume one side is open. The hot air needs to vent somewhere. If this is true then go with a front or rear exhaust system instead. The AIRCOM S10 is the front-exhaust version and S8 is rear-exhaust. Also, I like the S-Series because it offers all the control over the fans that I require. The T-Series costs more and seems a little overkill. Unless, however, you really like the LCD display. **Q: Will this work in automobile applications** A: It works off of 120. You should call the company and ask them if they have fans for automotive applications. **Q: does anyone use these fans in a stack? in between 2 components (amp, fan unit, avr for example)?** A: As long as you have proper clearance I don't see why it wouldn't cool ok. I think it pulls air upwards better than pushing air but I have used it to push air up thru an amp. **Q: Have a receiver in a cabinet with 3.5" space behind it to back of cabinet or about 5" above it to a glass shelf. Top or rear exhaust unit is better ?** A: This unit exhausts from the top and I have about 1 inch above the unit. It works perfectly. I’ve had no problems with the receiver overheating, since I purchased the fan. If you have 5” above, it should work very well for you. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for cooling my Marantz pm7000n amplifier *by M***R on 11 November 2025* Recently I noticed that my Marantz amplifier was getting hot. Marantz suggest that inch clearance is given at the top of the amplifier or use a fan. Since I'm unable due to space to provide the recommended clearance I opted to go for a fan solution. The AC Infinity works perfectly; cooling the amp with very little noise. Easy to install and use, with good documentation. Also came in a well padded box. I have it currently set to SMART mode. In this mode the fans start when the temperature reaches around 88 degrees F (31 Degrees C), then shuts off below 84 degrees F (29 Degrees C). The fan speed increase every 2 degrees above 88, but currently it have not risen above 88, and seems to be doing a good job at cooling. The S7 is smaller than the amp, may be the larger unit would be better for looks, but it is almost double the price of the S7. My unit came with UK plug power supply, so I did not need a US to UK adapter as others have stated. At low fan speed, I can't hear any fan noise. The unit when sat on top of the amp sucks air through the amp in the direction that normal convection cooling occurs. This is correct as you don't want it to blow air into the unit against the follow of the rising heat. So far the unit is performing perfectly. I wish Marantz had designed the amp with a built in fan! ### ⭐⭐⭐⭐⭐ Very impressive product, highly recommended *by W***N on 24 April 2021* My Denon AVC-X4700H runs hot, almost disturbingly hot. My 4 ohm speakers only deliver 87db per watt so are a tough drive, and whilst my front speakers are driven by another amp, the AV amp still drives another 4 speakers and the subwoofer. The S9 has proved to be fantastic at reducing the running temperatures significantly and the auto temperature control function means you can leave it to its own devices which is a real plus. It turns on/off as required so no hassle there. It generally runs on setting one which is only just audible, but ramps up to setting 2 out of 3 under load. Overall I'm very pleased with it, its built well, looks good, and is well priced for what it offers. If you own a Denon/Marantz AV amp then these things are a great addition and the temperature reduction will likely significantly increase the product life from excessive heat wear & tear. ### ⭐⭐⭐⭐⭐ Does the job *by P***D on 28 July 2025* Linn av 5105 it’s it running cool very happy ## Frequently Bought Together - AC Infinity AIRCOM S9, Quiet Cooling Fan System 17" Top-Exhaust for Receivers, Amps, DVR, AV Cabinet Components - AC Infinity AIRCOM S10, Quiet Cooling Blower Fan System 17" Front-Exhaust for Receivers, Amps, DVR, AV Cabinet Components - AC Infinity AIRCOM S7, Quiet Cooling Fan System 12" Top-Exhaust for Receivers, Amps, DVR, AV Cabinet Components --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/52124108-aircom-s9-quiet-cooling-fan-system-43-cm](https://www.desertcart.vn/products/52124108-aircom-s9-quiet-cooling-fan-system-43-cm) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-09-23*