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Re: Yamaha P105 teardown [Re: zerox61] #2217484
01/20/14 04:39 AM
01/20/14 04:39 AM
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peterws Offline
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Dunno why there seems to be so much criticism of what is a fine long standing popular piano . . .the speakers will be made to fulfill the function it was designed for; imo they`ll be better than many here think. On my DGX when I turn it up loud, it is loud and powerful sounding. Not at all tinny, and nearly as loud as my previous Clav which had all of 20W per channel from speakers which weren`t much bigger. And it`ll handle the software piano far better than I ever expected. 12W goes a long long way when the designers know what they`re doing. They got it right wi mine. (famous last words . . .)


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Re: Yamaha P105 teardown [Re: peterws] #2217560
01/20/14 10:26 AM
01/20/14 10:26 AM
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scorpio Offline
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Originally Posted by peterws
Dunno why there seems to be so much criticism of what is a fine long standing popular piano
puzzled too.


Kawai MP11 : JBL LSR305 : Focusrite 2i4 : Pianoteq Standard

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Re: Yamaha P105 teardown [Re: zerox61] #2217599
01/20/14 11:46 AM
01/20/14 11:46 AM
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PossumES8Krome61 Offline
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Originally Posted by zerox61
There were two big squishy foam parts on either sides of the "action" assembly when it is assembled to the frame. This prevents the rattling sounds on the ends.

you can see the big foam on the frame in picture #6

thanks, perhaps they added that later? (had one of the earlier models). Mine though might have been casing more in the corner itself of the board or along the top right lengthwise towards the end


Roland Juno Gi
Casio PX-130
Korg Krome 61
Korg SP280
Kawai ES8
Rokit KRK 6 monitors
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Re: Yamaha P105 teardown [Re: joflah] #2217771
01/20/14 05:32 PM
01/20/14 05:32 PM
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dewster Offline
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Originally Posted by joflah
Thinking about the tweeter in the middle of the box- maybe it gives some diffusion of the sound, making it less like a point source.

As an amateur speaker designer I can say there are a lot of innovative, crazy, whacked-out designs out there, but I've never seen anything like a tweeter in the middle of a box - until these P105 pix. The wavelengths of low frequencies don't "see" the box much (hence the anemic open baffle sound), mids will see it more, highs will reflect and cancel / reinforce in weird ways. Highs really need to breathe free.

And as a P105 owner I can say that it sounds about as good as one might expect. I'm not saying the tweeters aren't doing something, but they would be much more effective mounted flush with the case top.

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Re: Yamaha P105 teardown [Re: PossumES8Krome61] #2217774
01/20/14 05:41 PM
01/20/14 05:41 PM
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Northern NJ
dewster Offline
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Originally Posted by Possum SP280Krome
I assume the SDRAM is for the song recorder?

They generally pull the data and instructions from FLASH and stick it in SDRAM so as not to bog down the processor.

Originally Posted by Possum SP280Krome
Also, curious as to how much you think the speakers and amplifiers in this unit cost?

Street value for the woofer is maybe $5 each, for the tweeter maybe $1 each. Amp who knows but probably in the $10 ballpark for stereo.

Originally Posted by Possum SP280Krome
And it is driven my marketing and how much they can get away with and how naive the consumer is.
I made 2 bad purchases- luckily returned them both

I agree. Buying an enthusiast level DP is like looking for gold in a cow pasture.

Re: Yamaha P105 teardown [Re: dewster] #2217823
01/20/14 07:11 PM
01/20/14 07:11 PM
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PossumES8Krome61 Offline
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I don't think then despite that they sounded badly- improvement over the P95, but would if they added a little more to get quality like the SP280.

Now, the one thing I did like about the Yamaha's is the placement- you hear sound below and above the piano.

I hope when it comes time for the P-115 they reconsider and up it a bit


Roland Juno Gi
Casio PX-130
Korg Krome 61
Korg SP280
Kawai ES8
Rokit KRK 6 monitors
MXL V67G microphone
Re: Yamaha P105 teardown [Re: zerox61] #2217949
01/21/14 12:46 AM
01/21/14 12:46 AM
Joined: Mar 2012
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zerox61 Offline OP
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when I bought the P105, I tried a whole bunch of other competing DPs (with and without headphones) and the only other one I thought was good in this range was the Casio PX150.

What I mean to say is that even knowing that the speakers might be cheapy ones, etc, etc, it still won my choice when testing against their competitors!

I'm really interested in the PX150 guts. Maybe someone that is brave and have the time to rip theirs apart and show some pictures :P

Re: Yamaha P105 teardown [Re: zerox61] #2220692
01/25/14 05:41 PM
01/25/14 05:41 PM
Joined: Oct 2013
Posts: 239
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Wow. So great pics. Love it.

Thanks for sharing


Long time piano player, with 7 years experience working in restaurants and doing gigs in random places.

My project: Comparison of Portable Digital Pianos under 1000 US$

Owner of Kawai ES100
Re: Yamaha P105 teardown [Re: zerox61] #2221249
01/27/14 04:09 AM
01/27/14 04:09 AM
Joined: Jul 2012
Posts: 7,300
Northern England.
peterws Offline
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Originally Posted by zerox61
when I bought the P105, I tried a whole bunch of other competing DPs (with and without headphones) and the only other one I thought was good in this range was the Casio PX150.

What I mean to say is that even knowing that the speakers might be cheapy ones, etc, etc, it still won my choice when testing against their competitors!

I'm really interested in the PX150 guts. Maybe someone that is brave and have the time to rip theirs apart and show some pictures :P


It`d be interesting to see the Casio action in detail (it is similar in working characteristics). I was surprised that the black keys have a staggered "hinge", which does make them more playable. TBH the innovative use and form of plastics has been the stuff of my generation. It has been put to good use here. And those speakers? They know what they`re doing. Amplifying a piano is no easy business because of the frequencies involved.

Now then. WHO here has the Casio px350? Dive in there, man! We wanna see it stripped!


"I am not a man. I am a free number"

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Re: Yamaha P105 teardown [Re: zerox61] #2221410
01/27/14 11:58 AM
01/27/14 11:58 AM
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How do you find the sound of the p105 through monitor speakers vs piano vst's?

Re: Yamaha P105 teardown [Re: dewster] #2225845
02/04/14 04:08 PM
02/04/14 04:08 PM
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Posts: 137
Long Island, NY
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Michael H Offline
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Originally Posted by dewster

And I wonder why I'm having trouble getting it up for the DPBSD project lately. It's this same old, same old grind of intentionally inferior products that never ends in this stupid market. Every NAMM is like a smack in the face. Beautiful CFX sample sets butchered down to <16MB (~1/1000 original size).


Amen. I had a P105 and after a few gigs I used it strictly as a controller. The sound drove me nuts, no life to it at all. All the manufacturers nickle and dime us to death it seems.

What I'd LIKE to see is a series of solid MIDI controller keyboards, preferably NOT made by Fatar, with space on top (or internally) to secure a computer, and enough controls to access important parameters easily. Different keyboards for different purposes, like 88 note and a 76 note fully weighted models, various size synth/organ semi-weighted models, standard MIDI plus USB to Host included, having more intelligent key ranges on the 76 note models (perhaps low C to C an octave below highest C). How useful does anyone really think a 73 note F-F keyboard is?

How many of us would move over to performing with computer software, like gigabytes-sized pianos and organs, if such controllers were available?

Is this going to happen anytime soon? yeah, RIGHT! But if some company were to manufacturer such controllers I expect many of us would buy them. I know I would.


2012 Solo Piano CD of original pieces, entitled 'Journeys'. You can listen to samples at:
https://www.cdbaby.com/cd/michaelhagglund/from/greatindiemusic
Re: Yamaha P105 teardown [Re: zerox61] #2225903
02/04/14 05:34 PM
02/04/14 05:34 PM
Joined: Sep 2011
Posts: 3,674
Portugal
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Portugal
That sounds just like the Kawai VPC1 to me. Already on the market, taylored to this purpose with velocity curves for the best software pianos, designed in collaboration with those software companies. Top quality wooden keyboard, too.


Roland HP 302 / Samson Graphite 49 / Akai EWI

Reaper / Native Instruments K9 ult / ESQL MOR2 Symph Orchestra & Choirs / Lucato & Parravicini , trumpets & saxes / Garritan CFX lite / Production Voices C7 & Steinway D compact

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Re: Yamaha P105 teardown [Re: zerox61] #2225910
02/04/14 05:38 PM
02/04/14 05:38 PM
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Portugal
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Or if you need a full MIDI controller, there are these.... surely they're not all FATAR?

Last edited by toddy; 02/04/14 05:38 PM.

Roland HP 302 / Samson Graphite 49 / Akai EWI

Reaper / Native Instruments K9 ult / ESQL MOR2 Symph Orchestra & Choirs / Lucato & Parravicini , trumpets & saxes / Garritan CFX lite / Production Voices C7 & Steinway D compact

Focusrite Saffire 24 / W7, i7 4770, 16GB / MXL V67g / Yamaha HS7s / HD598
Re: Yamaha P105 teardown [Re: toddy] #2225928
02/04/14 06:05 PM
02/04/14 06:05 PM
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Long Island, NY
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Michael H Offline
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Originally Posted by toddy
That sounds just like the Kawai VPC1 to me. Already on the market, taylored to this purpose with velocity curves for the best software pianos, designed in collaboration with those software companies. Top quality wooden keyboard, too.


I'm sure the Kawai is very nice, but it's too big and heavy for performing live.


2012 Solo Piano CD of original pieces, entitled 'Journeys'. You can listen to samples at:
https://www.cdbaby.com/cd/michaelhagglund/from/greatindiemusic
Re: Yamaha P105 teardown [Re: toddy] #2225931
02/04/14 06:08 PM
02/04/14 06:08 PM
Joined: Nov 2010
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Melbourne, Australia
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Originally Posted by toddy
Or if you need a full MIDI controller, there are these.... surely they're not all FATAR?


Apart from the big brands like Roland, Kawai etc, I think they probably are all Fatar... sad but true. Fatar is the action of choice for lazy companies.

Re: Yamaha P105 teardown [Re: toddy] #2225944
02/04/14 06:31 PM
02/04/14 06:31 PM
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Long Island, NY
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Michael H Offline
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Originally Posted by toddy
Or if you need a full MIDI controller, there are these.... surely they're not all FATAR?


I was talking about a controller that has secure space for a computer, most likely on top. None of those keyboards have that and are good controllers as well. Unless I'm mistaken, there's nothing out there that covers ALL the bases I was talking about.


2012 Solo Piano CD of original pieces, entitled 'Journeys'. You can listen to samples at:
https://www.cdbaby.com/cd/michaelhagglund/from/greatindiemusic
Re: Yamaha P105 teardown [Re: zerox61] #2245875
03/13/14 10:17 AM
03/13/14 10:17 AM
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Great pictures - we enjoyed seeing the inner-workings of the Yamaha P-105!

Thanks
http://www.digitalpianocompare.co.uk/yamaha-p-105-digital-piano-review

Re: Yamaha P105 teardown [Re: zerox61] #2565880
08/25/16 06:06 AM
08/25/16 06:06 AM
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Muli Offline
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What a Fantastic informative post!
I got this problem on my Yamaha P105, and I was wondering if you had it too, that when I press 3 notes simultaneously I get a faulty extra note, which is entirely not conneted to what I pressed. It doesn't always happen, but at least 5 times in an hour of playing.
I went to a lab where they told me that the "Brain" of the piano needs to be replaced which will cost almost as a new piano!

I think that what they want to replace in the lab is the main card (The YD 880), please correct me if I'm wrong. Any idea where I can order it online, or whether it is a necessity?

Thanks a lot for your precious time,

Samuel

Re: Yamaha P105 teardown [Re: dewster] #2565910
08/25/16 08:35 AM
08/25/16 08:35 AM
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St Paul Minnesota USA
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Originally Posted by dewster
Originally Posted by gvfarns
Some day I'd like to have an actual digital piano designer/engineer answer these types of questions.

Same here. Though I wonder how many "actual digital piano designers/engineers" even exist anymore. The inmates (marketing types) are running the asylum.


I would guess, world wide, for all the manufacturers combined, there are less than 150 folks who actually design digital pianos. Electronics, keyboards, circuit boards, cases, sound samples, assembly. Then, coupled with a limited market, keeping internal costs low becomes a major factor in the design. Once a series exists (ex:CAx7), to completely redesign what works would never be a consideration. Incremental things, are accomplished, of course.

In reality, what an average person receives for even the under $1000 units is quite remarkable.

Here is a link to a young man that is constantly publishing new work on YouTube. On a lowly Yamaha DGX-650.

https://www.youtube.com/channel/UCfWXf5EvbPUxrN7vFDspDQQ

I wonder if he wonders of fulcrum location, key weight or what chipset? He bought it to play, and imho, he does pretty well.


Jon ...

Kawai CA67
Sailor, Consultant, Gourmet, Dreamer
Re: Yamaha P105 teardown [Re: zerox61] #2565919
08/25/16 09:04 AM
08/25/16 09:04 AM
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So we are discussing a topic from 2014 again now? I might add my 2 cents, if nobody minds.


Kawai ES100 | Steinberg UR22 | Sony MDR-7605
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