2. misc-audio
  3. 1029072104

Quiet fan for rack cooling installation?

I just bought a Plinius amp that runs very warm in class A. I have 6 inches of space above it and open sides and front in my rack, but the heat buildup is still immense. I'd like to install a small, silent fan in the rack to help keep things cool. Could you folks please make some recommendations based on your experience?

Cheers!
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john_l
782 posts
 
See www.tomshardware.com, www.anandtech.com, and www.directron.com for info. Directron has the actual db levels and cfm rates. Pabst fans are known to be very quiet.
bob_bundus
1,834 posts
 
4" muffin fans & a Variac to reduce speed & noise works great. But SCR-based motor speed controllers produce tons of noise so definitely avoid them. Fixed power resistors are another way to reduce voltage / motor speed.
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jclamage
3 posts
 
Try http://www.activethermal.com/ for a variety of rack and equipment cooling systems. I have a 74" tall Mid Atlantic ERK 4025 rack in a closet and cool the whole space with a System 1. Have the fan unit 10 feet away in the basement and exhaust out to my garage. Only sound in the closet is the gentle whoosh of hot air being sucked away. With the doors closed, totally silent. They also make units that sit right on top of a hot piece of equipment. Nice folks, very helpful.
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