Members d0zerz Posted May 15, 2006 Members Share Posted May 15, 2006 I remember reading once about multiple ways to do TBP, only one being the 'true' way. Can you still get tone suck out of pedals that are physically bypassed, as opposed to buffered Link to comment Share on other sites More sharing options...
Members dot-dot-dot Posted May 15, 2006 Members Share Posted May 15, 2006 Yes. Half-arsed bypass is possibly the worst, and will let sound through with no power applied. As I've oft said, it'd be quite possible to make a TB pedal that didn't pass sound when the power was off. Link to comment Share on other sites More sharing options...
Members john l Posted May 15, 2006 Members Share Posted May 15, 2006 Kind of. The most transparent board is a board that has a Line Driver input stage in conjunction with TB pedals after it. You dont get the tone sucking that {censored} circuitry necessarily gives you but you get signal degradation and impedience mismatches in some circumstances do to added cable capacitence and kicking TB pedals in and out of the chain. Link to comment Share on other sites More sharing options...
Members NiCkMiLnE Posted May 15, 2006 Members Share Posted May 15, 2006 all i know is my TB a/b works off a battery, when the battery is removed, it works... Link to comment Share on other sites More sharing options...
Members Howard Davis Posted May 15, 2006 Members Share Posted May 15, 2006 Guitar pedal design engineering, repairs, and custom mods:http://howard.davis2.home.att.net/ Go to this website and click on "ALL ABOUT BYPASS." Link to comment Share on other sites More sharing options...
Members PFDarkside Posted May 15, 2006 Members Share Posted May 15, 2006 It is possible to have a pedal work in bypass with no power, yet still have the input connected to circuitry that may result in tone degredation. So unfortunately, that test can prove a pedal is NOT TB, but can't prove that it IS TB. Link to comment Share on other sites More sharing options...
Members d0zerz Posted May 16, 2006 Author Members Share Posted May 16, 2006 Originally posted by PFDarkside It is possible to have a pedal work in bypass with no power, yet still have the input connected to circuitry that may result in tone degredation. So unfortunately, that test can prove a pedal is NOT TB, but can't prove that it IS TB. Is there any good reason to make a pedal with circutry that may result in tone degredation when it's off? I mean....if you can mechanically switch the signal, why wouldn't you want to make it TRUE TRUE Bypass by mucking it up with other crap the signal's passing through (in the off position)? Link to comment Share on other sites More sharing options...
Members Blungo Posted May 16, 2006 Members Share Posted May 16, 2006 I've heard that if you plug a pedal in backwards, remove the battery and it still passes a signal when on, then it's TBP. I think Zvex said it. Link to comment Share on other sites More sharing options...
Members theelectic Posted May 16, 2006 Members Share Posted May 16, 2006 Originally posted by Blungo I've heard that if you plug a pedal in backwards, remove the battery and it still passes a signal when on, then it's TBP. I think Zvex said it. Nope. Try that with any old Big Muff or wah, they only switch the output and suck tone, but will work like you describe above. Originally posted by d0zerz Is there any good reason to make a pedal with circutry that may result in tone degredation when it's off? Sure. It's way cheaper and easier to use a SPDT switch, and most people won't notice or care about the tone difference. Link to comment Share on other sites More sharing options...
Members Blungo Posted May 16, 2006 Members Share Posted May 16, 2006 Originally posted by theelectic Nope. Try that with any old Big Muff or wah, they only switch the output and suck tone, but will work like you describe above. Dang! I thought i had a sure fire easy test for TBP. Link to comment Share on other sites More sharing options...
Members IndyGuitarist Posted May 16, 2006 Members Share Posted May 16, 2006 Check www.geofex.com, www.muzique.com and Howard's site (see link above). True bypass and the ability to be used backwards with the power off have nothing to do with each other.bw Link to comment Share on other sites More sharing options...
Members dot-dot-dot Posted May 16, 2006 Members Share Posted May 16, 2006 Originally posted by PFDarkside So unfortunately, that test can prove a pedal is NOT TB No it can't. As I already said, it's quite possible to make a TB pedal that won't pass signal in bypass when power isn't applied. How? Have an SPST switch that controls a relay. When the relay is energised, the pedal is bypassed. When the relay isn't energised, the pedal is "on". So if you remove the power the signal goes into the pedal circuit - no signal back out. 'Course, it'd be silly to wire it that way. Come to think of it, if you used a momentary switch and a latching relay then you could have a TB pedal that (sometimes) doesn't pass signal without power. And NiCkMiLnE - there is no such thing as a TB AB. Utterly different concepts. Link to comment Share on other sites More sharing options...
Members PFDarkside Posted May 16, 2006 Members Share Posted May 16, 2006 Ah yes, I forgot about latching relays. Link to comment Share on other sites More sharing options...
Moderators AMZ-FX Posted May 16, 2006 Moderators Share Posted May 16, 2006 I remember reading once about multiple ways to do TBP, only one being the 'true' way. There are at least 3 ways that make TRUE bypass... Originally posted by Blungo I've heard that if you plug a pedal in backwards, remove the battery and it still passes a signal when on, then it's TBP. I think Zvex said it. This bypass wiring will pass a signal when there is no battery in it, but it is not true bypass. This wiring method was used in the old E-H pedals.regards, Jack Link to comment Share on other sites More sharing options...
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