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Re: Roland GO Piano: First Impressions
luite #2790999 12/13/18 06:56 PM
Joined: Sep 2007
Posts: 17,140
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Originally Posted by luite
I ended up buying an 88-key hammer action keyboard and using a hacksaw to make it shorter (and Pianoteq on a Raspberry Pi to generate the sound). It has 61 keys left now, and weighs around 10kg including case and stand: http://files.luite.com/piano/


Wow!

What a terrific project - congratulations!

...and yes, I fully agree with newer player - this project deserves to be discussed in a separate thread.

Cheers,
James
x

ps. Welcome to the forum, btw...incredible first post!


Employed by Kawai Japan, however the opinions I express are my own.
Nord Electro 3 & occasional rare groove player.
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Re: Roland GO Piano: First Impressions
luite #2791280 12/14/18 02:04 PM
Joined: Jan 2017
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Originally Posted by luite


Impressive! Thanks especially for the detailed write up, I think you have made the portable piano of peoples dreams smile


Now learning: Chopin C# minor Nocturne (posth), Mozart Sonata in C K. 545, R. Schumann Fantasy Dance, Joplin The Chrysanthemum
Instruments: Yamaha N1X, Kawai ES110, Roland GO:PIANO, Piano de Voyage
Re: Roland GO Piano: First Impressions
ClsscLib #3036721 10/17/20 03:18 PM
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I really want to like the go piano and finally tried it.

Now i'm puzzled.

Sound over monitors is ok, size is great, keys feel very natural - well, until i press them.

Unbelievable! This board is referenced as light and synthlike but i had the impression there are heavy duty springs fighting against me.

In normal playing i lost many notes, a check with pianoteq reveals they are triggered but with velocity zero.

Playing open chords more into the keys is absolutely tiring.

So i tried to quantify at least the static resistance:

At the very front of the white keys i need 100 gr for a 1 mm keydip. 110 gr and the key sinks.
Between the blacks i tested a typical position i reach with third or second finger.
I can place nearly 500 gr before the key moves.

How does this relate to other players experience of a light keyboard?
Is it an extreme sample? Am i just a whimp?

Please let me know if your experience differs and you have the possibility to measure the downweight for comparison.

-rhodes74

Re: Roland GO Piano: First Impressions
Rhodes74 #3036764 10/17/20 05:47 PM
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I've just tested the static weight of my GO:PIANO(61 keys) with 10 and 20 Euro Cent coins (4.1g and 5.74g)

The weights required on the edge to make the key reach the bottom are:
Key Weight
C1 129g
C2 111g
C3 129g
C4 141g
C5 141g
C6 104g
C#2 135g
C#3 129g
C#4 178g

In this test I placed the coins side by side with the edge of the black key nearby (weight needed to reach the bottom)
C4 190g
C5 208g


C5 (Between blacks around the middle of the black key - weight needed to reach the bottom) 255g


Set the key touch to fix and tested the minimum weight to play a note (trigger the sensor)
C4 124g
C#4 130g
C4 (side by side with end of black key) 164g

As a reference my Yamaha P121 (GHS) requires 115-120g to reach the bottom of the edge of the white key, 109g to trigger the sensor on the edge and 124g near the end of the black keys.

No wonder why I feel fatigued short time after starting playing the GO:PIANO...

Re: Roland GO Piano: First Impressions
ClsscLib #3036987 10/18/20 12:23 PM
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Muito obrigado!

That's pretty much in line with my observations.
The feeling is far off from my slabs and any Bechsteinwayamaha i'm used to.

Now do we have outliers?

Could some other users comment, i'm just wondering because i found not a single mention of such problems.

-rhodes74

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