Question 1

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

Accepted Answer

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.

Question 2

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?

Accepted Answer

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.

Question 3

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

Accepted Answer

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.

Question 4

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

Accepted Answer

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.

ASIN	B00G059G86
Air Flow Capacity	26 cfm
Best Sellers Rank	#3 in Computer Case Fans
Brand Name	AC Infinity
Compatible Devices	Amplifier
Cooling Method	Air
Customer Reviews	4.7 4.7 out of 5 stars (5,902)
Item Dimensions L x W x H	3.2"L x 1"W x 3.2"H
Item Highlight	UL-Certified, Dual-Ball Bearings, Noise-Absorption Pads for Receiver DVR, PlayStation, Xbox, Computer, Cabinet Cooling
Item Weight	4.54 g
Manufacturer	AC Infinity
Material Type	Rubber
Maximum Rotational Speed	2000 rpm
Model	AI-MPF80A
Noise Level	17 db
Number of Items	1
Number of Packs	1
Part Number	AI-MPF80A
Power Connector Type	USB
UPC	854759004327
Unit Count	1 Count
Voltage	7.2 volts
Wattage	1.1 watts

AC Infinity, MULTIFAN S3 Quiet USB Cooling Fan

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