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Main :: Spider Valve

12 Volt Source for Cooling Fan
by nprenger on 2013-01-25 21:20:13

Hey guys,

Do any of you mod gurus know where on the circuit board I might find a steady 12 volt source for a cooling fan that I would like to add to my Spider Valve Mk I 1x12 combo? I have the Strymon svPre installed, which was a great improvement, but I've always been a little bit concerned about the extra heat from the vacuum tube mounted inside the chassis and its potential effects on the processors inside. I love this amp and want it to last a long, long time. I yanked a quiet 12V fan that moves a lot of air out of my dead Tivo tonight - I just have to find a place to solder the two leads to. I can start checking voltages with my DMM when I get to it, but if any of you have ideas, I would really appreciate your input.



Re: 12 Volt Source for Cooling Fan
by nprenger on 2013-03-05 19:04:58

I figured this out on my own a few weeks ago and took some photos, so I thought I'd share in case anybody is interested. The power supply line going to the modeling circuit board is a constant 12 V DC, so I spliced into that. Works like a charm. I can hear the fan when I turn the amp on, but not when I'm playing at any significant volume. I may add a switch in the future so I can disable the fan while recording. I'm pretty happy with the way it turned out, though. I used a Dremel tool to add air inlet slots to the chassis under the svPre. The red and white twisted pair in the last photo are the leads for the fan.





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