moojiefulagin Posted January 30, 2004 Report Share Posted January 30, 2004 Hi! I was wondering what you do with an active circuit board unit in regards to grounding. Are the board and components usually isolated from the rest of the pots and switches (volume, tone) or can it just be attatched anywhere inside the guitar? Would this cause noise issues? thanks! Quote Link to comment Share on other sites More sharing options...
ansil Posted January 31, 2004 Report Share Posted January 31, 2004 yes this ground would not need to be connected to the bridge ground only the output jack. of course in theory its always good to ground the bridge through a resistor.. preferably highvoltage. Quote Link to comment Share on other sites More sharing options...
moojiefulagin Posted January 31, 2004 Author Report Share Posted January 31, 2004 Thanks! What about in terms of copper shielding? My guitar is a hollowbody, and the electronics weren't going to be shielded. Will this cause a problem with the active circuit? Quote Link to comment Share on other sites More sharing options...
ansil Posted January 31, 2004 Report Share Posted January 31, 2004 that won't really be for sure until you actually get it in there.. i woudl personally shield it myself though Quote Link to comment Share on other sites More sharing options...
Drak Posted January 31, 2004 Report Share Posted January 31, 2004 My guess would be yes. Any type of active circuit usually involves boosting the original signal, which in turn means boosting the noise along with it. Personally I would not use an active circuit of any kind unless I could shield the living crap out of it. Most of my guitars use the EMG Afterburner pre-amp, and they use noiseless pkps and -top-notch- shielding at all times in all areas. You get really tremendous performance that way. You get all the good stuff about the active system, and NO noise. If it were me, with a hollowbody, I wouldn't do it unless I found a way to make some kind of shielding system for it. Quote Link to comment Share on other sites More sharing options...
moojiefulagin Posted January 31, 2004 Author Report Share Posted January 31, 2004 Thanks. That was EXACTLY what I needed to know! (pics coming soon!) Quote Link to comment Share on other sites More sharing options...
Drak Posted January 31, 2004 Report Share Posted January 31, 2004 Not to say it couldn't be done, just need to be a bit creative with the shielding. Is this an 'f-hole and pickup cavity only' entry type of guitar, or is there a rear control plate for access? I wouldn't look at it as a problem, but more like a challenge. Quote Link to comment Share on other sites More sharing options...
lovekraft Posted February 1, 2004 Report Share Posted February 1, 2004 You could cover the solder side of the board with silicon ( or any insulator) and wrap the whole board in copper foil, and connect the foil to your system ground. Or encapsulate it in epoxy, and wrap that in copper. Quote Link to comment Share on other sites More sharing options...
moojiefulagin Posted February 1, 2004 Author Report Share Posted February 1, 2004 That's a very interesting idea. Quote Link to comment Share on other sites More sharing options...
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