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[FortySixAndTwo]

I'm building a fan unit to cool my home theater system and I'm pretty sure I need help.  I want to connect 3 12v dc 120mm fans to an ac power source.  Do I just get an ac adapter from radio shack and connect the three fans with a molex connector?  Do I need a resistor in between the power source and the fans to regulate the voltage?  Any help or direction would be appreciated.  Setting my house of fire because I wired this incorrectly would pretty much suck.     

[YucA]

all you really need is a 120v AC to 12v dc converter.  To have them run at optimum level, get a hold of an AC adapter that has enough amperage to push em all.  Fom there, you can just hook em all up and you're done.  Might want to throw an inline switch, or if the amp to the system or any other component for that matter has a switched plug built in, that will allow the fans to turn on and off automatically in conjunction with your system

[TheM@trix]

Why do you need need to cool your home theatre system with active cooling?
The system should run fine stock unless you have the ventilation grills covered.
Wait, you're one of those cooling freaks.....like me.

[wonko]

As long as your planning a trip to the shack, pick up AC fans instead of 12v.  Easiest thing I can think to do.

[FortySixAndTwo]

Thanks for the input everyone.  I have the dc fans sitting around so I figured I'd put them to use.  The ac fans are a good idea though.  I like to make things as complicated as possible too. Now, off to the shack... 

[chase!]

Hay guyz, less talking about stuff, more pictures of you guys catching your house on fire so I can laugh at you.

[YucA]

only problem with most AC fans of this size is that they are louuuuud!  Maybe its the ones i've gotten a hold of, but ive gotten some 120v ac 120mm fans and they sounded like a jet from a few rooms away...

[kid]

This should do it:



Along with:



.... oh wait I thought this was about how to start your house on fire.