dh7892 Posted January 30, 2007 Report Share Posted January 30, 2007 Has anyone ever come across/used QTC for guitar pickups? http://www.maplin.co.uk/Search.aspx?menuno...=3&doy=30m1 I couldn't find anything on the web and tried a quick search of these forums but got nothing. I wondered if you could use the cable type under a bridge like piezo wire and use it to pickup the vibrations. It would have to work as part of a voltage divider with some active electronics because it changes resistance with pressure rather than generating a voltage of its own. What would be the point I hear you ask. Well, quite! But perhaps it would sound good? Any thoughts? Quote Link to comment Share on other sites More sharing options...
fookgub Posted January 30, 2007 Report Share Posted January 30, 2007 Has anyone ever come across/used QTC for guitar pickups? http://www.maplin.co.uk/Search.aspx?menuno...=3&doy=30m1 I couldn't find anything on the web and tried a quick search of these forums but got nothing. I wondered if you could use the cable type under a bridge like piezo wire and use it to pickup the vibrations. It would have to work as part of a voltage divider with some active electronics because it changes resistance with pressure rather than generating a voltage of its own. What would be the point I hear you ask. Well, quite! But perhaps it would sound good? Any thoughts? At a glance it seems interesting. It would need some bias circuitry at the least. A fixed voltage in series with a resistor might be a start, but I'm sure something more sophisticated could be used. Probably needs a high impedance buffer to counter the effects of changing source resistance with amplitude, too. I wonder how linear it is and what the sensitivity would be. The cable is a bit thick for a traditional piezo-type installation, but I'm sure it could be made to work. Quote Link to comment Share on other sites More sharing options...
dh7892 Posted January 31, 2007 Author Report Share Posted January 31, 2007 Yeah, that's pretty much what I thought. I might have a go at it some time. Quote Link to comment Share on other sites More sharing options...
Saber Posted January 31, 2007 Report Share Posted January 31, 2007 I wonder what kind of frequency response you can get from it, and how much intrinsic noise it generates. Quote Link to comment Share on other sites More sharing options...
dh7892 Posted February 1, 2007 Author Report Share Posted February 1, 2007 Only one way to find out... ...Well, actually, there are a number of ways to find out but I think the best one is to give it a shot and see how it goes. Quote Link to comment Share on other sites More sharing options...
Robert_the_damned Posted February 1, 2007 Report Share Posted February 1, 2007 QTC is basicly a very fancy variable resistorand so wouldn't work on its own as a pickup; you'd have to build it into some sort of circuit to actually produce an output voltage. I don't know if it would even have a suitable frequency responce as I seem to remember it being very rubbery (not a good discription but I'm sure you know what I mean). By all means try it out but it'll be more complicated than sticking it under your bridge and soldering two wires to it Quote Link to comment Share on other sites More sharing options...
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