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59 Views 1 Reply Latest reply: Mar 5, 2013 7:04 PM by nprenger RSS
nprenger Just Startin'
nprenger
82 posts since
Jul 25, 2007
Currently Being Moderated

Jan 25, 2013 9:20 PM

12 Volt Source for Cooling Fan

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.

 

Thanks,

 

nprenger

Tags: svpre, strymon, fan, cooling
  • nprenger Just Startin'
    nprenger
    82 posts since
    Jul 25, 2007
    Currently Being Moderated
    Mar 5, 2013 7:04 PM (in response to nprenger)
    Re: 12 Volt Source for Cooling Fan

    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.

    fan_hole.jpg

    outside.jpg

    inside.jpg

     

    nprenger

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