Members dap99 Posted October 2, 2007 Members Share Posted October 2, 2007 The DIY forum doesn't get as much traffic so I'm dbl posting b/c I'm that impatient. I did the mods on Andreas' page. Now I want to go back in there and put trimpots where he suggests, but I just have one question - He writes: "Just remember to set them to the correct value before installing, so you Link to comment Share on other sites More sharing options...
Members melx Posted October 2, 2007 Members Share Posted October 2, 2007 i'm only guessing (from my limited knowledge) but I guess you need to set the resistance (or whatever it is) with a meter. Link to comment Share on other sites More sharing options...
Members SUPER VELCROBOY Posted October 2, 2007 Members Share Posted October 2, 2007 where's the link to the mod? Link to comment Share on other sites More sharing options...
Members dap99 Posted October 2, 2007 Author Members Share Posted October 2, 2007 where's the link to the mod? This would help, wouldn't it? Down towards the bottom :poke: Link to comment Share on other sites More sharing options...
Members andreas Posted October 3, 2007 Members Share Posted October 3, 2007 i'm only guessing (from my limited knowledge) but I guess you need to set the resistance (or whatever it is) with a meter.Exactly. It is much easier to get going, if you've already set the trimpot somewhere in the range you think you'll end up. For the gain mod, I'd use a 470 ohm trimpot, set to about 350 ohms or so. For the mid/Q mod, you'll have to use a 4.7Kohm trimpot (it's the closest standard value available), and I'd start out at 1.8Kohm or so. Another tip is to, while you're measuring, mark out on the trimpot itself a couple of reference values (for instance the stock value, and the highest/lowest value you think you'll be using). That way, you can start fine-tuning right away, without getting lost trying to find a baseline setting. /Andreas Link to comment Share on other sites More sharing options...
Members dap99 Posted October 3, 2007 Author Members Share Posted October 3, 2007 Exactly. It is much easier to get going, if you've already set the trimpot somewhere in the range you think you'll end up. For the gain mod, I'd use a 470 ohm trimpot, set to about 350 ohms or so. For the mid/Q mod, you'll have to use a 4.7Kohm trimpot (it's the closest standard value available), and I'd start out at 1.8Kohm or so. Another tip is to, while you're measuring, mark out on the trimpot itself a couple of reference values (for instance the stock value, and the highest/lowest value you think you'll be using).That way, you can start fine-tuning right away, without getting lost trying to find a baseline setting./Andreas Thanks Andreas! On the web page you suggest a 100k to replace the 33k resistor, but now you suggest a 4.7Khohm? Am I missing something? Also, I can't seem to find a 4.7Kohm, but I can find a 5Kohm - close enough? Lastly, does it matter which outer leg I use w/ the center leg of the trimmer? Thanks again for all your help! Link to comment Share on other sites More sharing options...
Members andreas Posted October 3, 2007 Members Share Posted October 3, 2007 Oh, for the "Q" mod, a 100K would definitely be the right choice. I was talking about the midrange adjustment (1.5K stock value), where a 4.7K or 5K would be right. It doesn't matter which outer leg you cut off - it will change what happens as you turn the pot clockwise (if the resistance increases or decreases), but as long as the trimpot is the linear type, it won't matter. /Andreas Link to comment Share on other sites More sharing options...
Members dap99 Posted October 4, 2007 Author Members Share Posted October 4, 2007 Oh, for the "Q" mod, a 100K would definitely be the right choice. I was talking about the midrange adjustment (1.5K stock value), where a 4.7K or 5K would be right. It doesn't matter which outer leg you cut off - it will change what happens as you turn the pot clockwise (if the resistance increases or decreases), but as long as the trimpot is the linear type, it won't matter. /Andreas My bad. Thanks again for the support. Now that I've got my wheels turnin', I think I'm going to order the BYOC board and the extra parts that I need. I think in the long run, it'll save me a lot of time/energy b/c the BYOC PCB is so neatly laid out. Thanks again - and my friend thanks you b/c he LOVES the wah I modded for him using your page :thu: Link to comment Share on other sites More sharing options...
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