I have in mind to build an electric ngoni, a type of 8 stringed african harp that is a smaller version of a kora harp. They have 2 sets of strings, 1 set facing left, the other facing right. 4 (or 5 for a 10 string version) arranged vertically on the left, the same on the right, going up to a curved neck with tuners on it. This is a good picture, its clear where the pickups would need to go
http://djembe-art.de/djembe-images/images-afrikanische-trommeln/Kor...
In principle is it possible to put 2 pickups, back to back, or slightly staggered, so that they are both facing outwards? Or will they interfere too much with each other? Do pickups have to alawys face the same way (as they normally do when 2 or 3 are fitted on a regular gutar?
cheers Jonathan
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How about front to front, slightly offset from each other and "outside" the strings rather than between them?
This might be a good application for Piezos since there appears to be a very large box for resonance and piezos are essentially microphones and might work well in the "box". It would keep the design clean and true to the original.
Interesting concept,Tom's suggestion might be the way to start,i don,t know what responce you'd get from a mag with such radical string length variation.i picture the mag placement being ultra critical
Thanks for your taking the time to post your helpful comments and suggestions! Thinking about it, maybe I'll try out the peizo option first. I have dozens of them at home already. I made some cap piezos (approx 2 1/2 inch diameter caps off hellmans jars and similar) which have worked well for me when placed directly under the bridge on earlier diddley bow builds. So that vertical "bridge " arrangement on the traditional ngoni would suit being fitted onto something like that. Plus as Tom said, there is potential for a piezo in the hollow box. There are no gourd growers in East England, so perhaps an oil can, or an old expansion vessel from a central heating boiler would act as a good substitute. I'll post a picture or video when the idea does eventually become reality.
cheers Jonathan
Sounds like a plan. Remember, a tone knob set up on the piezo can do a lot to soften the sound. I tried a knob with a .022 uF capacitor and it worked well.
Thanks Tom.
I been going through it again this evening, thinking it over. I might even make a quick 1/2 size version from a tin can, wooden stick and nylon fishing line, simple wooden tuning pegs in taper reamed holes (thats what I used on my first piezo electric diddley boew)
LOL I was earlier just putting my single string bass through the sonuus wahoo, a wah pedal I originally got to use with my shofars. It has bass filters and envelopes in it. Its sensitive to how hard you play the string, when it gets above a certain level (which you can edit) the effect kicks in or out as you quieten down again,
Thanks for your sudgestions gents, I appreciate it.
Putting the pickups on the outside of the 2 sets of strings would likely get in the way of playing, I use many different parts of the strings. But the cap piezo is definately worth a try. And thanks for the technical tip Phryigian Kid, Its good to know in principle they would work, if I build a ngoni with them in it. Is flipping the phase the same as phase when you are recording drums or something with 2 tracks, and you have to get them "in phase" or it sounds cwap??
You could also try a pair of my ThinBucker thin pickups that are only .25 inches thick, and lay them back to back for a total thickness of half an inch.
Hi Jonathan
I have same ambition, did you succeed and could you share any tips?
I wanna perhaps make a bass ngoni electrified.... without a case just a stick and strings.
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