These forums are read only, please use our new forums here.
12 Volt Source for Cooling Fan
on 2013-01-25 21:20:13
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
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.
The information above may not be current, and you should direct questions to the current forum or review the manual.