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Old 11-30-2011, 12:52 AM
RobbieSmith RobbieSmith is offline
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Join Date: Nov 2011
Posts: 1
Default Homemade tube guitar preamp

I am making a three channel guitar preamp. I have all the details worked out except how to switch between the channels. The idea is that I'll have 3 dpst relays. The output of the first stage will break out into the three different channels. Each channel has its own relay with one pole at the input and one at the output. It should be set up so that when I send the signal for channel one, it's relay closes at both ends while the other channels' relays open. It should work the same for each of the channels.
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Old 11-30-2011, 12:32 PM
Jeff242 Jeff242 is offline
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Join Date: Jan 2011
Location: Sheffield, UK
Posts: 15

I'm planning to adapt the switching circuit from this schematic when I finally get round to adding the remaining channels to my preamp
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File Type: zip Trio Switching.zip (41.8 KB, 231 views)

Last edited by Jeff242; 11-30-2011 at 12:41 PM. Reason: Added Zipped copy of switching mechanism
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