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Testing of the new pick up for classic guitar:
Box
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12-03-2024 05:12 AM
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I suppose we're talking about Pick-up - udo roesner amps , but which one, single or dual source?
Could you post some pictures of how it's installed in your guitar? The product page doesn't even show the piezo itself...
I don't know how much post-processing went into your recording but listening back over a decent BT tabletop speak it sounds like one of the least piezo-quacky systems I've heard!
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Single source end-pin piezo pickup system.
Originally Posted by RJVB
Piezo is 67 mm metal construction with 2 mm width.
I'll take pictures later....It sounds very clean and you can manipulate the volume well.
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That looks like it's an UST? Originally Posted by kris
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Yes...it is undersaddle piezo element.
Simillar to Fishman Matrix piezo.
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I think the website is saying the piezo is actually built into the endpin jack. So it picks up the vibration from contact of the inside of the jackpin hole when its torqued down maybe? Or maybe its missing from the picture.
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Its missing from the picture. Originally Posted by Brian859
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Figures, thanks. It sounds really good. I need one for my classical, but those undersaddles are a bit of a hassle. I'm still leaning towards the jjb 430 disk type piezo. Originally Posted by kris
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However, I prefer undersadlle. Originally Posted by Brian859
Gluing piezo elements inside the guitar is often a problem... which glue will be the best....?
super glue gel?
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Probably. A few tiny drops should do. I wonder if simple nitro varnish wouldn't work too. Originally Posted by kris
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The problem will be when you have to peel it off... Originally Posted by RJVB
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That's where the tiny drops come in ... CA shouldn't penetrate deeply and with nitro there would be ways to weaken it. Originally Posted by kris
The "trick" is to get the minimum adhesion needed to keep the sensors in place and into sufficient contact but not more that a quick/dry pull makes it come off.
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I'm still formulating how to attach it. I did the disk ones with a heavier two sided tape on the guitar my niece now has. It worked well as it took some of the quack out of the tone. My conn has no plate, just the thin fan braces. Probably any form of super glue is out in that case as I don't think they could be removed without doing damage. So I'm thinking some form of rubberized cement. I'll get it figured out.
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I don't think there's much risk as long as you use tiny beads of not-to-thin CA that will not penetrate into the wood. Less with spruce than with cedar in any case. Cement OTOH sounds like something that's really going to consolidate the permanent-install nature of those multi-piezo systems.
Maybe try to figure out what kind of adhesive Schatten use for their Dualie pickup?
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It certainly does sound terrific, especially for a piezo; I don't hear the usual "quack" either.
There doesn't seem to be any under-saddle connected with this pickup – I can't find one anywhere in this picture. And the "Dot" in the name seems to indicate that the piezo is in the endpin, as Brian had suggested. But I can't find any information about how to install it, which might indicate saddle-or-endpin location.
Inquiring minds...
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It is spruce and its kind of fuzzy on the inside, which raised my concern it might stick to well with super glue. It sounds real decent with the mic I use. But might not be practical live. You brought up some good point though. I'm still formulating I guess. Originally Posted by RJVB
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Except that I don't think that makes sense. AFAIK piezo pickups are contact mics. I have an external one that came with a tuner and it doesn't generate any output unless it's clamped onto something. Originally Posted by Ukena
Plus, imagine what kind of signal a piezo would get somewhere inside that tube that's fixed through the endblock in a classical guitar that's designed to keep the energy in the top plate?
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"kind of fuzzy" means a nicely textured surface on which glue will have a great hold? Originally Posted by Brian859
Are you dextrous enough to "prime" the spots where you want to install the disks with some nitro? Nitro doesn't like CA but in this case you couldn't care less if you pull some of the finish off when removing the disks.
EDIT: I tried to glue a thumbwheel pot to the underside of my fingerrest made of ash veneer. Impossible using CA because of the wood grain: CA is a contact glue that needs more contact surface than available at the spot where I wanted the pot. Ended up using a piece of 3M double-sided tape. I don't see why you couldn't do that if you already have good experience with it in another guitar. Maybe do some very light local sanding at the installation points?
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I think I would use something like this first. Its cheap, can maybe reposition the disks easily to find the best tone.
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This kind of piezo is included in the Udo Roesner set.
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By fuzzy, I meant not sanded smooth per say. Not sure what happened when I loaded this screenshot the first time, but this stuff.
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Strange, I don't see that anywhere on their web site. Originally Posted by kris
This kind of piezo is included in the Udo Roesner set.
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Maybe they hope to "catch" people by obliging the to ask (like how stores try that by hiding price tags)?
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