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Started by Taylor, January 19, 2010, 03:31:39 PM
Quote from: Taylor on February 17, 2010, 07:59:00 PMYep, it's looking like you'll have the ability to do parallel and series, but it will require a 4PDT toggle switch,
Quote from: Taylor on February 18, 2010, 03:58:34 AMQuote from: jkokura on January 19, 2010, 03:41:37 PMIs there a way to have it either be a mix pot or a level pot? Like depending on the builders desire? Or is that a part of the PCB that's either one or the other.Is there a reason you'd prefer a level pot to a mix pot? Originally I wanted as much flexibility as possible, but as the board gets more complex, this is harder to maintain. I'm thinking I will go with one or the other. The Mix pot seems more versatile to me. What do you think?
Quote from: jkokura on January 19, 2010, 03:41:37 PMIs there a way to have it either be a mix pot or a level pot? Like depending on the builders desire? Or is that a part of the PCB that's either one or the other.
Quote from: slacker on February 18, 2010, 12:49:23 PMWhy? You can do parallel/series switching with a DPDT, or are you using the extra poles to switch other things?
Quote from: slacker on February 18, 2010, 12:57:26 PMYou can give the builder the option of having delay level or a mix control fairly easily, it just needs a couple of extra solder pads adding to the original schematic, I'll knock up a drawing. If you go with a mix control though there's no way you can use the original switching, you'd either have to true bypass it or use buffered bypass, but either way you'd lose the tails feature. Personally I don't see the appeal of a mix control, but if it's is something a lot of people wanted I could have a go at redesigning the switching to allow for it and keep the tails feature.
Quote from: Taylor on February 18, 2010, 02:19:48 PMQuote from: slacker on February 18, 2010, 12:49:23 PMWhy? You can do parallel/series switching with a DPDT, or are you using the extra poles to switch other things?Well, I'd love to see how you'd do it. Here's what I worked out.
QuoteI do want to keep the tails and switching. I have a schem that somebody did that incorporates a mix knob at the opamps, didn't change the switching, is there some reason that doesn't work?
Quote from: slacker on February 18, 2010, 03:27:22 PMHere's the mix pot mod from the Echo Base thread http://www.diystompboxes.com/smfforum/index.php?topic=60662.msg556933#msg556933 looks like it was meant to be used with true bypass, it definitely won't work properly with the original switching.I think I've come up with a way to do a mix pot that will allow anything from 100% dry to 100% wet and let you keep the tails, it just means using a DPDT stomp for the bypass which doesn't seem like a problem to me. I'll have to breadboard it to see if it works, if it does I'll post a schematic.
Quote from: slacker on February 18, 2010, 02:56:18 PMMy thought was just to switch the inputs and outputs of the delays between series and parallel, which you can do with a DPDT, I hadn't thought about the extra stuff you're switching. I was thinking of having separate feedback pots and connecting them both back to the input of the first delay. That way in series you can tap the feedback from either the first delay or the second or a mixture of both.
QuoteI'll put it in a rack if I have to.
Quote from: aziltz on February 18, 2010, 11:19:59 PMHey Taylor, the BYOC Ping Pong does the series/parallel switch via toggle in mono. Perhaps checking out that schem might help? They keep em posted in their build instructions.-Austin
Quote from: slacker on February 20, 2010, 12:35:53 PMI got chance to try out the mixer idea I posted earlier and it seems to do what we want. Some of the values will probably need tweaking to get the best balance of the wet and dry signals and maintain a constant volume between bypassed and effected but it basically works. Even hooked up with a bunch of crocodile clips there's no popping or other nasties when switching and tails work like on the original.I have to admit the 100% wet setting is pretty cool for vibrato sounds and the chorus sounds seem a bit easier to dial in.
Quote from: Skruffyhound on February 20, 2010, 04:34:51 PMWhat's special about the dual gang pot you want to use? Is it a vertical mount with the long legs? Otherwise we could just accept that one pot needs to be wired and use a more common dual pot with lugs. Wouldn't a vertical mounting dual sit higher than the other pots anyway. Can't see the problem, could you sketch the way you want to mount it?
Quote from: Skruffyhound on February 20, 2010, 07:02:20 PMGenerally I'm in favour of PCB mount everything, but since I can't see how this vertical mount dual pot will align with the other pots anyway then I could make an exception and wire 6 lugs. So yes I'd prefer the pot to opto's
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