Need to vent tube heat?

Nsgarch, Out of curiosity, I looked up the fans you mentioned. The site sez that they have an automatic temp control function that is not only a turn on/off but actually controls the fan speed. Interesting and sounds great! But, there is no mention about how the automatic function is dialed in, something that would seem to me to be important, especially if the fans are placed some distance from the heat source.

Are you aware of how this works in actual use?

Newbee - leaving no turn un-stoned, I called Vantec on that issue and it was explained that many newer computer motherboards have built-in heat sensors so that the case fans can be turned on/off or their speed adjusted according to the conditions inside the computer enclosure.

I decided (rightly or wrongly) that implementing that capability in my little DIY audio application was probably going to be more trouble than it would be worth - so I put the whole thing out of my mind ;-)

But if you want to pursue it further and find a simple way to implement that feature, PLEASE share it with us!

thanks, -Neil
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Then the heat control is actually external to the fan - now that makes sense to me.

No, I really have no interest in implementing that 'feature'. Actually, to the contrary, for me simple is better. I do have a tad of residualy noise in my set up (I can only hear it when the music is off, sort of just like another environmental noise) but being an anal audiophile I may give these a try.

Thanks.

Newbee, that's also my approach (keep it simple.) But like I said, I did check with Vantec first. For one thing, I felt the fans were really more powerful than I needed them to be (although still very quiet) so after I spoke with Vantec, I decided to (simply) use a 9V instead of a 12V power supply, and that was that ;-)

Electronics that runs cooler lasts longer. You can use active cooling like fans and Airconditioning for your house. OR you can use passive techniques, like a chimmeny to draw air thru.
You can create problems with either technique. With fans, you can have dead spots with little or no air circulation...blow a fan at a piece of vented gear and you may interfere with the natural upward convection of warm air. Passive cooling needs good design and space. It may be possible, for example to cool power tubes with the addition of a smoke stack around the tube. Vented at the bottom, it will draw in cool air and accelerate it up as it warms.

I am currently designing an isolation space for my components. It will feature forced air cooling with input filter. Dedicated vents and a scheme of vibration isolation. The top will have my bigscreen TV, since I am unable to afford, either space or money, more than a single system.

On my worktable, i have a CPU fan, designed for 12vdc which runs fine off a 9v battery and is almost silent. That another poster uses similar is heartening and I may be on the right track. A large, maybe 120mm fan will move enough air, running on 9v. The rat-shack solution may work, even with multiple fans.

Many years ago, I built a fan cooler for my Carver Cube. It 'plugged' onto the back of the amp an drew air thru it. While very noisy, you couldn't tell, since played loud enough to NEED the fan, you could hear the music down the block.