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DIY Living Room Cabinet for PX-750 #2386064
02/14/15 01:28 PM
02/14/15 01:28 PM
Joined: Feb 2015
Posts: 10
8
88fingers88 Offline OP
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88fingers88  Offline OP
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I'm a newcomer to the forum but I've been reading posts here for quite some time. I thought I'd use my first post to share a digital piano DIY cabinet that I worked on over the last couple weeks.

I bought a Casio PX-750 at Costco during their pre-Christmas sale. I didn't like the stand. I'd wanted something that was living room worthy and had enough of a WAF (Wife Acceptance Factor) to allow this to be a full-time fixture in my house. Here's a shot of the original PX-750 and stand in my basement before the build gets started.

[Linked Image]


The frame, of course, had to be custom built for the PX-750 and the speakers I planned to install, which took a whole lot of measuring and planning. I used 2X4s for the internal frame, ripped down the middle. Everything is glued and screwed together. My frame looks a little extra complicated since I had to build it with a removable top so it would fit up my basement stairs. The piano will have to be returned to the basement every December to make room for the Christmas tree.

[Linked Image]

Unfortunately all major wordworking and saw cuts had to be made in my carport in Canada in February. Not fun.

I made sure to build the lower frame to accommodate the pedalboard.

[Linked Image]


The DP had to be inserted in the frame temporarily at this point so the rest of the plywood panels could be measured correctly. I used 1/2" birch for the front and sides and 3/4" pine for the rear panel.

[Linked Image]

Here we are ready to paint after trim, woodfiller, and lots of sanding.

[Linked Image]


Iron-on veneer on the top makes a nice finished surface.

[Linked Image]

After two coats of tinted acrylic primer.

[Linked Image]

Here is the paint and primer I used along with a $12 (!) paintbrush that I hardly ended up using. A small cheap sponge paint roller worked way better.

[Linked Image]

Here we are after three coats of the furniture paint. All these layers of primer and paint dried into a hard shiny coating almost like an enamel.

[Linked Image]


Here's the speaker system I'll be using for the time being. I bought these off Kijiji for $80. I wanted these for the number of speakers and wired control pod. Each satellite has both a tweeter and mid-range driver, which takes care of the mid-range problems inherent in most computer speakers. 70 watts is a big upgrade over the PX-750's internal speakers.


[Linked Image]

Here are the speakers installed in the finished cabinet. I have four satellites pointing up toward the lid and the center speaker (which has twice as much power) pointing to the rear.

[Linked Image]

Here's a rear view of the finished unit with the center (rear) speaker exposed.

[Linked Image]

Here we are finally finished and in my living room. The spindles were my wife's idea.

[Linked Image]

I lined the interior with felt and installed a lifting lid with a lid-stay and piano hinge.

[Linked Image]

Here's the finished piano. Looks way better than the factory stand and the sound is great. Plenty loud and clear, especially with the lid raised. Lots of tactile feedback in the keys supplied by the subwoofer. The PX-750's front-facing controls made it ideal for such a cabinet.

[Linked Image]






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Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386077
02/14/15 01:45 PM
02/14/15 01:45 PM
Joined: Dec 2014
Posts: 121
Florida
J
jimb100 Offline
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Florida
Fantastic job! It looks like a lot of work but the results are well worth it.


Casio PX 850
Alfred's Book 1
Sony 7506 phones
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386079
02/14/15 01:48 PM
02/14/15 01:48 PM
Joined: Nov 2009
Posts: 3,173
UK
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spanishbuddha Offline
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UK
Good job, thanks for sharing that.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386091
02/14/15 01:55 PM
02/14/15 01:55 PM
Joined: Jun 2014
Posts: 1,289
UK
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Alexander Borro Offline
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UK
Very nice indeed. I was thinking about doing something like that somewhere along the line with my Casio.

Now, if you really want to impress the visitors stick one of these logos on it laugh

[Linked Image]



Selftaught since June 2014.
Books: Barratt classic piano course bk 1,2,3. Humphries Piano handbook, various...
Kawai CA78, Casio AP450 & software pianos.
[Linked Image] 12x ABF recitals.
My struggles: https://soundcloud.com/alexander-borro
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Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386190
02/14/15 05:02 PM
02/14/15 05:02 PM
Joined: Oct 2013
Posts: 1,667
Chicago, Illinois
David Farley Offline
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Chicago, Illinois
That was a lot of work, and an interesting setup for the speakers.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386211
02/14/15 05:45 PM
02/14/15 05:45 PM
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Lester Burnham Offline
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Like the work you've put in there.

My only point of constructive criticism, is I'm not keen on the look of the spindles compared with the rest of the cabinet - I think more plain spindles would suit better.

Just a question - how do things work out in terms of a music stand / rest?

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386279
02/14/15 08:11 PM
02/14/15 08:11 PM
Joined: Feb 2015
Posts: 10
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88fingers88 Offline OP
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88fingers88  Offline OP
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I suppose the spindles are a matter of taste. I originally wanted something that looked like a Yamaha CP-585 or a Roland LX-15, neither of which of course have spindles. My significant other likes them, however, and it's a concession I'm willing to make to have a piano in the living room.

You have a good point about the music rest. If I used paper scores I would have to come up with a solution. Turns out, however, that my tablet works quite well leaning between the PX-750 music rest ledge and the front surface of the cabinet. The tablet's all I use anyway for this purpose.

Keep in mind I'm no finish carpenter or cabinet maker. I'm reasonably handy and have done some framing and shingled a few roofs. I did the interior paneling in my cottage and the interior trim around all our windows when they were replaced last year, but that's about it. This project takes some time and patience but it's certainly not out of the reach of anyone on this forum. Someone creative enough to play the piano (and no doubt 99% of everyone here is better than me with that) should be able to plan something like this and make it happen. I'd be happy to provide any input or help to anyone who want to make the attempt.


Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386497
02/15/15 05:23 AM
02/15/15 05:23 AM
Joined: Sep 2009
Posts: 6,582
North Carolina
MacMacMac Offline
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North Carolina
Nice work.

I'm fine with the spindles. I'd prefer a gloss finish. I wonder what it would take to produce that? Would a few coats of gloss polyurethane accomplish it?

I wish that this were true:
Originally Posted by 88fingers88
This project takes some time and patience but it's certainly not out of the reach of anyone on this forum.
It's far out of my reach. I once gave thought to building a woodworking shop in my garage. But the great expense (I'm thinking Norm Abrams!) and my lack of talent and experience convinced me to take up something else ... piano.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386581
02/15/15 11:15 AM
02/15/15 11:15 AM
Joined: Jan 2013
Posts: 25
Canada
G
Gettonikid Offline
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Very nice - been thinking of building something similar for my CP 4 so I have a couple of questions - how are you connecting the sound system to the Casio (phone plug adapter?) and I think you mentioned you are also a Canuck - kany chance you are in the GTA as I would like to place an order for one 😃

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386585
02/15/15 11:31 AM
02/15/15 11:31 AM
Joined: Jul 2012
Posts: 7,079
Northern England.
peterws Offline
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peterws  Offline
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Northern England.
That is a proper, quality job, well done!


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

"[Linked Image]"
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386633
02/15/15 01:47 PM
02/15/15 01:47 PM
Joined: Jan 2015
Posts: 491
Mountain Time, USA
OneWatt Offline
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OneWatt  Offline
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Mountain Time, USA
88fingers88 -

Wow, thanks for sharing these pictures... this is truly awesome.
A wonderful idea ... and such a professional execution. Congratulations!

(BTW, I'm pleased to see this was the brainchild of a left-handed piano player) wink

- OneWatt

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386722
02/15/15 05:46 PM
02/15/15 05:46 PM
Joined: Nov 2012
Posts: 1,126
Connecticut, USA
scorpio Offline
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Connecticut, USA
amazing, nice work.


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

We are the music makers, and we are the dreamers of dreams. Willy Wonka


[Linked Image] [Linked Image]
Re: DIY Living Room Cabinet for PX-750 [Re: MacMacMac] #2386789
02/15/15 09:54 PM
02/15/15 09:54 PM
Joined: Aug 2012
Posts: 736
Scott Hamlin Offline
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Scott Hamlin  Offline
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Originally Posted by MacMacMac
Nice work.

I'm fine with the spindles. I'd prefer a gloss finish. I wonder what it would take to produce that? Would a few coats of gloss polyurethane accomplish it?


Probably, but I think lacquer would be a better choice.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386814
02/15/15 11:43 PM
02/15/15 11:43 PM
Joined: Sep 2007
Posts: 14,200
Hamamatsu, Japan
Kawai James Offline
Yikes! 10000 Post Club Member
Kawai James  Offline
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Excellent job!

Really great following your detailed write-up of the creation process too. wink

Cheers,
James
x


Employed by Kawai Japan, however the opinions I express are my own.
Nord Electro 3 fan & occasional rare groove player.
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386947
02/16/15 10:38 AM
02/16/15 10:38 AM
Joined: Feb 2015
Posts: 10
8
88fingers88 Offline OP
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88fingers88  Offline OP
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I think a proper high-gloss piano finish could only be accomplished in a paint booth with the proper lacquer. The finish I got actually matches the existing PX-750 finish quite well and everything blends visually into one unit. A high-gloss finish would not look as good IMO.

There's little choice with the PX-750 other than the headphone jack for the audio connection since it has no dedicated line outs. I had to special order a L-shaped 1/4" adapter with two RCA plugs (for $30!) and I could only get it with a 10-foot cord. The two RCA plugs are connected to another adapter making it a 1/8" stereo connection. This, in turn, plugs into a 3-way headphone splitter so I can have an equal signal going into all three speaker inputs (front, rear, and center/sub). Otherwise I'd have to use the speaker's "Matrix" button to get sound from all satellites from a 2-channel stereo signal. The Matrix mode sounds like a cross between simulated surround sound and the "loudness" button on an old hi-fi. I didn't like the way it made the piano sound at all.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386961
02/16/15 11:29 AM
02/16/15 11:29 AM
Joined: Jan 2013
Posts: 25
Canada
G
Gettonikid Offline
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Canada
Thanks for the breakdown but I am a audiophile challenged - my Cp 4 has the two phone plug and xlr outputs - could you detail what I would need to do to connect it to the Logitech system for best sound quality ...

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2386985
02/16/15 12:13 PM
02/16/15 12:13 PM
Joined: Jun 2010
Posts: 298
Atlanta, GA
J
JoeThePro Offline
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Atlanta, GA
Great job! Im intrigued by the speaker setup. Since there's essentially no EQ, and the samples were not tuned for those speakers, how do they sound? My experience with external speakers on my px-130 is that they ALWAYS end up way too boomy, and too scooped in the midrange. I have to EQ the absolute [censored] out of it to get it sounding realistic.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387046
02/16/15 02:19 PM
02/16/15 02:19 PM
Joined: Feb 2015
Posts: 10
8
88fingers88 Offline OP
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I've got the sub turned down to pretty much nothing to offset the boominess, but I know what you're saying. Is there some kind of in-line equalizer that could be used between the piano output and the speakers I wonder?

Last edited by 88fingers88; 02/16/15 02:19 PM.
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387059
02/16/15 02:41 PM
02/16/15 02:41 PM
Joined: Dec 2013
Posts: 449
Montreal, Canada
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guyl Offline
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Now that is nice! I always like to see cabinet projects on the forum because I also made my own just over a year ago, but your project has extra appeal to me because

1- I also used a 5.1 computer sound system in it, which I really like. Mine uses a Dell speaker system rated at 100 watts.

2- Another Canadian, like me :-)

You also mention the tactile feedback provided by the subwoofer, which is one of the features I appreciate most. I included a small mixer which allows me to use a MIDI sound module with the same sound system. I also went for a satin black finish, which went well with the Yamaha P-155B that I used for my project.

I only hope it encourages others to embark on similar projects.


What do snowflakes and Chickerings have in common? There are no two exactly alike!
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387092
02/16/15 04:17 PM
02/16/15 04:17 PM
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88fingers88 Offline OP
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Thanks, guyl, I scrolled through the post on your build several times before starting my own. I also had a long look at the art-deco cabinet built by peterws.


Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387097
02/16/15 04:34 PM
02/16/15 04:34 PM
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Montreal, Canada
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guyl Offline
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Cool. I also thought you'd be inspired by the art-deco cabinet build by peterws. Have you tried different positions for the speakers, especially the subwoofer? If you haven't tried it, I'd test it placed farther up, close to keyboard level. Seems you'd get the most tactile feedback that way without it needing to be very loud.


What do snowflakes and Chickerings have in common? There are no two exactly alike!
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387101
02/16/15 04:44 PM
02/16/15 04:44 PM
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Atlanta, GA
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JoeThePro Offline
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Originally Posted by 88fingers88
I've got the sub turned down to pretty much nothing to offset the boominess, but I know what you're saying. Is there some kind of in-line equalizer that could be used between the piano output and the speakers I wonder?


I believe there are, you'd just need some cable adapters probably to go from the TRS headphone jack on the piano to RCA red/white cables or whatever the EQ would accept. You may be able to find some with TRS inputs, who knows. Heck, even a "stompbox" guitar pedal EQ may work. Dont quote me on that though. wink

Last edited by JoeThePro; 02/16/15 04:45 PM.
Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387118
02/16/15 05:17 PM
02/16/15 05:17 PM
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North Carolina
MacMacMac Offline
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There are lots of equalizers available on Ebay, ranging from $20 to $200. Any one will do nicely. I'd prefer a 10-band unit rather than a 5- or 7-band.
Originally Posted by 88fingers88
I've got the sub turned down to pretty much nothing to offset the boominess, but I know what you're saying. Is there some kind of in-line equalizer that could be used between the piano output and the speakers I wonder?

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2387925
02/18/15 12:31 PM
02/18/15 12:31 PM
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Gettonikid Offline
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Originally Posted by 88fingers88

There's little choice with the PX-750 other than the headphone jack for the audio connection since it has no dedicated line outs. I had to special order a L-shaped 1/4" adapter with two RCA plugs (for $30!) and I could only get it with a 10-foot cord. The two RCA plugs are connected to another adapter making it a 1/8" stereo connection. This, in turn, plugs into a 3-way headphone splitter so I can have an equal signal going into all three speaker inputs (front, rear, and center/sub). Otherwise I'd have to use the speaker's "Matrix" button to get sound from all satellites from a 2-channel stereo signal. The Matrix mode sounds like a cross between simulated surround sound and the "loudness" button on an old hi-fi. I didn't like the way it made the piano sound at all.

Sorry just want to confirm that you use the 3 way headphone splitter so that you connect 3 cables to the green,grey and yellow slots labeled 6 way under inputs on the subwoofer and where did you get it ...

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2388066
02/18/15 07:49 PM
02/18/15 07:49 PM
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88fingers88 Offline OP
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The back of the X-540 has three inputs: front (green), rear (black), and sub/center (orange).

The splitter I bought is actually a 5-way headphone splitter (I couldn't find a 3-way and I just said that in the description to make it easier to understand). The splitter has no 'in' or 'out' markings; all ports work either way. I plugged the triple 1/8" cable that came with the speakers into three of the splitter ports, and the piano into another. I use another port on the splitter as an input for a laptop or tablet (you can see the tail of that cable end hanging out the back in one of the pictures). I think I bought the splitter off Amazon and it wasn't expensive. You can get them at any electronics store.

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2388128
02/19/15 01:19 AM
02/19/15 01:19 AM
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Gettonikid Offline
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Thanks again for the help

Re: DIY Living Room Cabinet for PX-750 [Re: 88fingers88] #2388622
02/20/15 10:36 AM
02/20/15 10:36 AM
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Bangkok, Thailand
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Clumsy Offline
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Great job!


- Anirut J.
Out-of-tune mid 70's acoustic Bentley upright and Casio Celviano AP-450

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