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Just completed another octave mando/guitar hybrid
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Author:  J De Rocher [ Fri Nov 20, 2020 8:22 pm ]
Post subject:  Just completed another octave mando/guitar hybrid

This one is going be heading off to Colorado after it has had a chance to settle in for final tweaks. In terms of the woods used, it's a twin of the prototype I built last spring. Sitka spruce top; claro walnut back, sides, headplate, and rosette ring; khaya neck; Indian rosewood fingerboard, bridge, and binding. The scale length is 20". The body is similar in size that of a baritone ukulele. The lower bout is 10 1/2" across.

I lightened up the bracing a bit on this one compared to the prototype. I tapered the lower x-brace arms more and scalloped their ends further back from the rims. Also reduced the height of the tonebar a bit. It sounds a bit louder. I like how it sounds. At least as good as the first one. I'll see how much it changes over the next few days.

The most significant change I made was to use standard guitar fretwire (LMI FW74) instead of smaller mandolin fretwire. The taller height of the wire improved the playability enough that I plan to refret the prototype.

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Author:  J De Rocher [ Fri Nov 20, 2020 8:23 pm ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Two more:

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Author:  Chris Pile [ Sat Nov 21, 2020 12:26 am ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Yeah, man.

Author:  bcombs510 [ Sat Nov 21, 2020 10:44 am ]
Post subject:  Just completed another octave mando/guitar hybrid

Seriously a beauty! Do you have a sound clip of either one? This is the instrument Sarah Jarosz plays?


Sent from my iPhone using Tapatalk Pro

Author:  BradHall [ Sat Nov 21, 2020 10:53 am ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Superb workmanship and design. I too would like to hear a sound clip.

Author:  Chris Pile [ Sat Nov 21, 2020 1:00 pm ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Quote:
This is the instrument Sarah Jarosz plays?


Sarah is quite the multi-instrumentalist.

Author:  J De Rocher [ Sat Nov 21, 2020 1:19 pm ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Sarah Jarosz does play an octave mandolin (among other instruments), but hers has an archtop guitar type body.

Author:  J De Rocher [ Sat Nov 21, 2020 3:03 pm ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

bcombs510 wrote:
Seriously a beauty! Do you have a sound clip of either one? This is the instrument Sarah Jarosz plays?


Sent from my iPhone using Tapatalk Pro


Here are a couple short videos of how the prototype sounds. I recorded them using my iphone so take that into account. In the second video playing single note stuff, you can hear bit of string buzz that was caused by using the short mandolin fretwire I used on that one. The short height of that fretwire means that if you place your finger any distance away from the back of the fret, the string bottoms out on the fretboard right away and you don't get enough downward string pressure on the fret to prevent some buzz when picking with a thick pick. The higher fretwire I used on the new octave mando solved that problem.

https://youtu.be/8XDbUfs_JC8
https://youtu.be/K6fdX6FO4Eg

Author:  Chris Pile [ Sat Nov 21, 2020 4:05 pm ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Very nice.

Author:  Ruby50 [ Sun Nov 22, 2020 9:22 am ]
Post subject:  Re: Just completed another octave mando/guitar hybrid

Nicely done

Ed M

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