Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Re: Bad Idea!

207.18.199.124

Posted by Barrett770707 on March 20, 2002 at 08:52:32

In Reply to: Bad Idea! posted by j.l.guillebeau@att.net on March 19, 2002 at 16:26:55:

I could always do it that way - I'm using Thermacore active heat sinks that were designed to cool Xeon processors, about the same thermal capacity as the passive heat sinks Dr. Leach specs, but they need about 100 cfm airflow for the same maximum capacity. I'm using them because of their small size (I can fit 5 channels in a 4u chassis with a 1kva torroidal transformer) and because they're free (thrown out here at work). I'm thinking I'll use speed controlled fans, and they'll probably hardly ever come on, if they do, it'll be slow enough that they won't make much noise (100 cfm is very little) and if the sinks heat up enough that they do need to crank up the speed, by then the spl will be so high that a couple of quiet fans won't be a problem. Unfortunatly, here at work (big computer mfgr) I have access to nice thermal chambers, the advice of engineers who's job it is to handle the thermal aspects of our servers, etc, that I don't have if I just do it by the seat of my pants at home. But dragging in a preamp and speakers to work isn't really pratical either, so perhaps it's clearer why I'd like to know a good range for a represenative input signal, and a good approximation for what s speaker looks like to the amp. Our power supply guys have these nice programmable load generators that you can set up almost any parameter you'd want. The problem is I don't know what that'd be!

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