What is the best position top or bottom of audio receiver? Vents are on top and bottom.

I would actually use 2 fans. One to push and one to pull. I used these for a Dish Network receiver which runs very hot inside the cabinet. I used one fan to blow air into the box and one fan to pull air out of cabinet. Works great.

Can someone out in the community help me!...Excuse my stupidity...there are two usb plug ins..One goes to the wall usb port..how bout the other one?

The other port is for daisychaining them together. Like if you have 2 fans and wanted to run both through the same power supply, you'd plug one into the power supply and then the other fan through the second port on the first fan.

I am thinking about buying this to cool off my PS3 original. should I get the single or dual fan?

Honestly I think dual fans are overkill. I'm using a single fan in my stereo cabinet with an Onkyo TX-NR737 head unit (125 watts into 7 channels, though I'm only using 3 powered by that amp) plus a Samsung UBD-M8500 Blu-ray and streaming player. That combination is easily putting out at least 500 watts (maybe more) of heat when it's running a good movie ... your PS3 doesn't do more than about 200 watts per Wikipedia. So the fact that one fan running only on medium speed, plus some decent vent holes, takes care of all the heat from my system means no way do you need 2 fans. Just make sure there's some good input/output air holes or grate or something to provide space for the air to flow through your cabinet, and a single fan should more than do the trick.

What is the extension of the usb cord , is it 6ft or

It's about three feet, on mine. I have the AC Infinity thermostat, it has it's own power cord to the fans. On my cabinet, I have it powering three fans. It has a big Yamaha receiver and Emotive amp. and it stays nice and cool.

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AC Infinity, MULTIFAN S3 Quiet USB Cooling Fan

AC Infinity, MULTIFAN S3 Quiet USB Cooling Fan

Product ID: 1176317

Details

Brand
AC Infinity
Compatible Devices
Amplifier
Cooling Method
Air
Material
Rubber
Maximum Rotational Speed
1300 rpm
Noise Level
18 db

💨52 CFM airflow

🔇18 dBA ultra-quiet

🔋67,000 hrs dual-ball bearing lifespan

SAR 107

Duties & taxes included

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Description

💨 Stay cool, stay ahead — silent power for your tech hustle!

BUILT TO LAST - Dual-ball bearings ensure a remarkable 67,000-hour lifespan for long-term reliability.
VERSATILE PLACEMENT - Lay flat or stand upright to fit seamlessly into any setup or tight space.
PLUG PLAY USB POWER - Easily powers from any USB port on your AV electronics, consoles, or PC—no extra adapters needed.
WHISPER QUIET COOLING - Operate your gear without distraction thanks to an ultra-quiet 18 dBA noise level.
PRECISION SPEED CONTROL - Customize airflow with a multi-speed controller for perfect cooling balance.

The AC Infinity MULTIFAN S3 is a UL-certified, ultra-quiet 120mm USB fan delivering 52 CFM airflow at just 18 dBA noise. Featuring a multi-speed controller and durable dual-ball bearings rated for 67,000 hours, it offers customizable, long-lasting cooling for electronics like gaming consoles, DVRs, and computers. Its compact design supports both flat and upright placement, powered conveniently via USB for seamless integration into any professional or home setup.

Specifications

ASIN	B00G05A2MU
Air Flow Capacity	52 cfm
Best Sellers Rank	#5 in Computer Case Fans
Brand Name	AC Infinity
Compatible Devices	Amplifier
Cooling Method	Air
Customer Reviews	4.7 4.7 out of 5 stars (6,192)
Global Trade Identification Number	00854759004310
Item Dimensions L x W x H	4.7"L x 1"W x 4.7"H
Item Highlight	UL-Certified, Dual-Ball Bearings, Noise-Absorption Pads for Receiver DVR, PlayStation, Xbox, Computer, Cabinet Cooling
Item Weight	9.07 g
Manufacturer	AC Infinity
Material Type	Rubber
Maximum Rotational Speed	1300 rpm
Model	FBA_AI-MPF120A
Noise Level	18 db
Number of Items	1
Number of Packs	1
Part Number	FBA_AI-MPF120A
Power Connector Type	USB
UPC	854759004310
Unit Count	1 Count
Voltage	5 volts
Wattage	5 watts

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