spacecowboy Posted September 13, 2020 Share Posted September 13, 2020 Hi guys, I'm currently making my own bass and I'm up to the electronics... I need just a little advice hopefully from some pro's who know exactly what they're looking at... First question is, my EMG Jazz Pickups are Active... but am I right in thinking that this loom here is a passive circuit? This is the stock output jack in the kit... But I want to use this Barrel jack, which I believe has Mono and Stereo wiring options... The sleeves from the solderless kit do fit on to the pins, however is this enough of a connection? The EMG instructions advise to solder these connectors to the pins on the barrel jack... now do I remove the sleeves and trim back to the wire to solder to the pins or solder the sleeves to the pins? Next query is... which wire goes where? Could someone guide me in a B to A, B to C style guide? I don't have any drawings or info for the jack, but can clearly see the pins are different. Thank you all in advance. B Quote Link to comment Share on other sites More sharing options...
BassBunny Posted September 13, 2020 Share Posted September 13, 2020 It looks like an active loom by having a battery clip and 3 wires to the pick-up connectors. As to what goes where on the jack you want to use. What do A,B and C correspond to? In other words which is tip, ring and sleeve? It's easy to suss out with a multimeter. Quote Link to comment Share on other sites More sharing options...
Woodinblack Posted September 13, 2020 Share Posted September 13, 2020 Yes, you have missed a on that socket, just under what you have labelled as A, there is a real a. If I was to guess I would say the one you labelled as a is just the body for earthing, the one under it was the tip, c was the sleeve and b was the tip, but that would be a guess and I would never take a guess at that before wiring, I would read its documentation or buzz it out with a meter. and yes, doesn't look like there is a preamp but again, EMGs documentation is very detailed so look there Quote Link to comment Share on other sites More sharing options...
TwoTimesBass Posted September 13, 2020 Share Posted September 13, 2020 Quite hard to see what's going on there, but as @Woodinblack suggests, the EMG documentation is pretty good. Have a look here https://www.emgpickups.com/pub/media/Mageants/j/_/j_ja_jcs_0230-0116rd.pdf This seems to correlate with the pics you sent... Quote Link to comment Share on other sites More sharing options...
TwoTimesBass Posted September 13, 2020 Share Posted September 13, 2020 Diagram 2 coupled with Diagram 5 on that pdf link looks like the configuration you need, good luck! Quote Link to comment Share on other sites More sharing options...
EMG456 Posted September 14, 2020 Share Posted September 14, 2020 Remembering that classic EMGs are active *pickups* quite often wired to a passive tone circuit. 1 Quote Link to comment Share on other sites More sharing options...
TwoTimesBass Posted September 15, 2020 Share Posted September 15, 2020 2 hours ago, EMG456 said: Remembering that classic EMGs are active *pickups* quite often wired to a passive tone circuit. That was what was doing my head in when I first looked at the loom, when you see a battery in a circuit you expect to see a preamp board 😀 Quote Link to comment Share on other sites More sharing options...
BigRedX Posted September 15, 2020 Share Posted September 15, 2020 7 hours ago, TwoTimesBass said: That was what was doing my head in when I first looked at the loom, when you see a battery in a circuit you expect to see a preamp board 😀 The pre-amp is actually inside the pickup housing. There's nothing actually "active" about the pickup mechanism itself, that is a traditional wire around a magnet. Quote Link to comment Share on other sites More sharing options...
Woodinblack Posted September 15, 2020 Share Posted September 15, 2020 1 hour ago, BigRedX said: The pre-amp is actually inside the pickup housing. There's nothing actually "active" about the pickup mechanism itself, that is a traditional wire around a magnet. Indeed, but that is just terms. You can't use the pickups without power, so the pickup assembly is active. The board in the picture is just a set of plugs to get power to the required pickups and the output to the plug, so the loom itself is passive. Advantage of that is you can use very small windings or small magnets which would normally produce too low an output as it is being buffered at source. 1 Quote Link to comment Share on other sites More sharing options...
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