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Thanks for the kind words suggestion Ben. I played around with clamping the piezos between the strings. It helped some, but I’ve found these MEAS tabs respond better under pressure. I ended up cutting a slot on each side of the bridge about ¾” from the top and putting the piezo tabs in the slots – sort of like the feet on the sides of a traditional bass bridge. The pressure from the strings flex the slots and push down on the piezos just enough to get good, even volume. I’ll have to upload pictures this weekend. I’m still tweaking the nut and refining the bridge. I might end up spending as much time on the setup as I did building the thing.
Ben said:Hey David, sweet build! I was thinking about your piezo problem. Have you considered going the Fishman route (make your own of course). I have it and I really like it. It has two piezos that are clamped ON TO the bridge between the E and A strings and between the D and G strings. This might give you more vibration but keep it from getting boomy.
http://www.fishman.com/products/details.asp?id=10
David Herring said:Micah
I'm currently working on one myself. I used a 41" scale, with a 33" fingerboard (1.5" wide at the nut and 3.5" wide at the base and a 4" radius). Here's a link of what I've done so far. http://herringmeisterlist.blogspot.com/
I think the long scale length is the deal maker. Everything else is a matter of taste.
David,
I've done some violin/a/cello/bass repair workshops and have definitely found that the set up can take for ever. Setting the sound-post on an expensive instrument, right where the owner loves the sound is quite an undertaking. I'm really impressed with your build though. You obviously have some wood-working skills. Out of curiosity, what wood are you using for the bridge and nut?
David Herring said:Thanks for the kind words suggestion Ben. I played around with clamping the piezos between the strings. It helped some, but I’ve found these MEAS tabs respond better under pressure. I ended up cutting a slot on each side of the bridge about ¾” from the top and putting the piezo tabs in the slots – sort of like the feet on the sides of a traditional bass bridge. The pressure from the strings flex the slots and push down on the piezos just enough to get good, even volume. I’ll have to upload pictures this weekend. I’m still tweaking the nut and refining the bridge. I might end up spending as much time on the setup as I did building the thing.
Ben said:Hey David, sweet build! I was thinking about your piezo problem. Have you considered going the Fishman route (make your own of course). I have it and I really like it. It has two piezos that are clamped ON TO the bridge between the E and A strings and between the D and G strings. This might give you more vibration but keep it from getting boomy.
http://www.fishman.com/products/details.asp?id=10
David Herring said:Micah
I'm currently working on one myself. I used a 41" scale, with a 33" fingerboard (1.5" wide at the nut and 3.5" wide at the base and a 4" radius). Here's a link of what I've done so far. http://herringmeisterlist.blogspot.com/
I think the long scale length is the deal maker. Everything else is a matter of taste.
Sorry for the bump, but I thought this might be of interest, since I had the same issue (looking for inexpensive bass tuners) for a long time.
Try Experimental Musical Instruments. At $4.50 each, it ain't bad. They also have piezos and wound pickups among other things. http://windworld.com/products-page/hardware-for-acoustic/bass-tunin...
If you want to go even cheaper, check out the Uncle Bob tuner. http://www.cyberferal.com/UncleBob/design.html Check the bottom of the page, pic on the left. You can replace the phillips heads with knuled knobs - although with bass string tension, it might be too hard to turn.
Jack
Micah Haley said:
Hey David, what did you use for your tuning machines?
I'm trying to source some and they are anything but cheap.
Thanks!
http://www.eclecticbass.com/eurb.html
I would do a google search for Elecrtic Upright Basses . Truly a lot of ideas out there.
Don
This guy has a 3 string, which makes a lot of sense. He's got playing tutorials there, too.
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