Finished Pernambuco/WRC contemporary classical guitar.

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johnparchem
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Finished Pernambuco/WRC contemporary classical guitar.

Post by johnparchem » Fri Apr 19, 2019 9:14 am

My last complete instrument for a short time (I promise.) It is just that I had two going on and the scheduled Ukulele class. In any case this is a "Contemporary Classical" Guitar. I get it, an oxymoron. The basic body shape is a Hauser 37 with the cutaway added. The contemporary features are a bolt on\bolt off neck, compensated nut, 30' radiused top. 10' radiused back 24" radius fretboard, 49 mm nut, sound port and carbon fiber reinforced falcate braces. This one looks like I will have resonance numbers very close to the Osage Orange right now I have 97 Hz T(1,1)1, 193 Hz T(1,1)2 and 254 Hz T(1,1)3. I will tune down the back a bit until the top is 190 Hz. But I like to let it be played a week to see what happens.

Three piece Pernambuco back and sides
Western Red cedar top
Cocobolo Bindings and fretboard
Brazilian Rosewood headstock veneer
CF reinforced Brazilian Rosewood bridge
Traditional French Polish top with shellac
Amboyna Burl classical style rosette
Back and sides and neck sprayed with Post catalyzed Royal lac sprayed on Silvertip Epoxy with slow hardener pore fill.
Bright Gold with Ebony Schertler Classical Guitar Tuning Keys.

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johnparchem
Blackwood
Posts: 546
Joined: Mon Jan 21, 2013 2:59 am
Location: Seattle
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Re: Finished Pernambuco/WRC contemporary classical guitar.

Post by johnparchem » Sat Apr 20, 2019 6:45 am

I do have spectrum graphs of the tap for this and the Osage Orange guitar I posted last week. You will see they are very close. The Pernambuco has a sound port which accounted for the higher Air resonance. I am not sure what the cutaway does to the air resonance T(1,1)1, I do know the sound port would raise it. In any case the Gore techniques are letting me get pretty consistent.
First this one the Pernambuco.
Tap spectrum after some adjustment.jpg
Tap spectrum after some adjustment.jpg (76.4 KiB) Viewed 5018 times
The Osage Orange
strung up to tune with close setup riszed.png
strung up to tune with close setup riszed.png (115.36 KiB) Viewed 5018 times

johnparchem
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Location: Seattle
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Re: Finished Pernambuco/WRC contemporary classical guitar.

Post by johnparchem » Mon Apr 29, 2019 12:07 am

Here is a video my guitar instructor Doug Rice tring this guitar. His main guitar now is one of my falcate classical guitars. Here is his description of the sound he hears from this falcate bracing pattern. "Their superb basic tone color and resonance, especially their high overtones presented a harp-like quality. They exhibited a wide dynamic range and followed esponsively throughout the range, enabling a vastly broadened interpretive menu: for example, piano subitos were not simply softer, but seductively engaging to the ear.The sustaining quality enabled impressive legato lines. The treble-bass balance enhanced voice leading and unfolding rich harmonies."

Both videos are from my phone

https://youtu.be/e6EAVj3J00g


youtu.be/e6EAVj3J00g
Here the guitar is being played by a non classical player

https://www.youtube.com/watch?v=4Wh7GO2SWww


youtu.be/4Wh7GO2SWww

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WJ Guitars
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Location: Sutherland NSW
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Re: Finished Pernambuco/WRC contemporary classical guitar.

Post by WJ Guitars » Mon Apr 29, 2019 8:30 am

John, brilliant result, superb finish and beautiful tone. The sustain and loudness is amazing.

Wayne
https://wjguitars.wixsite.com/mysite-1

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lamanoditrento
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Re: Finished Pernambuco/WRC contemporary classical guitar.

Post by lamanoditrento » Mon Apr 29, 2019 9:43 am

Nice John. Isn't it so pleasing to see your creation played with aplomb
Trent

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