One way to install the DKC-850 controller with bracket (revised/proofread)
2011-03-15 by kassey22000
The 850 bracket that is provided separately is set up for right-side installation only. I find having any head-unit on the right makes sitting down to the piano awkward, and doesn't look very classy from the curved side of the piano.... a vantage point most of us have for our pianos (and why I believe Yamaha moved the E-3 over to the left). Disclaimers: This solution is a suggestion based on my personal experience. Keep in mind that if you make this modification you will not be able to return or replace the mounting bracket. If you ruin it or hurt yourself in process, it's your responsibility and your choice to proceed in the first place. Make sure you wear eye protection and gloves and take the appropriate safety measures before proceeding. If you're not handy with tools or working with metal, please take the bracket to someone who is. The procedure is not endorsed by Yamaha or any dealer. I was able install the DKC-850 controller on the left side of the piano by doing the following: A.) Removing the two outer bracket tabs on the left side of the bracket. These tabs prevent the bracket from being placed on the left because they get in the way of the left piano leg. There are still two other anchor tabs on the inside of the bracket to attach to the underside of the piano. There are a couple of ways you can accomplish this. 1.) If you have a metal saw (hack saw with metal cutting blade). Be careful with your cut to make sure you don't mar the rest of the bracket finish. I use several layers of masking tape to cover the areas close to where I'm cutting. 2.) (The way I did it) If you have an anchored vise you can place the tabs (one at a time) securely in the vise and while holding the main part of the bracket, gently rock the bracket back and forth a few inches each way. After about 5-8 rocking motions the seam between the tab and the bracket well heat from the friction and separate. This will leave the tab firmly in the vise and the bracket in your hands. A little filing with a metal file will clean up the edge and a little black paint or permanent black marker will give the bracket a finished look. Again make sure you tape up the areas where you're working to prevent scratches/mars on the finish of the bracket. This part of the tab removal took me only 10 minutes. B.) Moving the silent control unit (on the MKII-Pro) slightly over to the left thereby accommodating both the 850 and the silent controller. I think it looks terrific. If you have the small control box on the left with the headphone and volume adjustments on your piano, this can be carefully moved just slightly to the left to thereby accommodate the DKC-850. Tips: 1. Anytime you attach any object to a piano you risk causing sympathetic vibrations through and from the objects you're attaching and thereby creating unintended noise when you play the instrument. 2. There are no pre-drilled holes for this side of the mount so you must very carefully pre-drill 3 shallow holes ½ the diameter of the wood screws you plan to use. I used small black Phillips-head wood screws that have large enough heads to accommodate the bracket but short enough not to penetrate too far into the underside of the keyboard. I believe these were ½ inch long. I took one of the mounting screws provided with the bracket to the hardware store to find a wood-screw match in size. 3. Measure how far back from the front lip of the piano you want to have the bracket mounted. I choose the outer top edge of the bracket to be ¾" back from the underside of the keyboard edge (see pics in the photo section of this site). If you don't have a headphone box, position the bracket as close to the left leg without touching. This should give you plenty of leg room and allow you to see the 850 screen and allow the CD drawer to open freely. Some may want to move the bracket closer to the front so it's not as recessed so try this before you drill any holes. Attach the bracket to the 850, lay under the piano and try different positions and placements, and mark these with a pencil. Try this again making sure you're sitting at the piano bench and hold the control unit up to make sure you have free access and it's easy to see the screen from your vantage point, then mark again. Once you have the unit placed where you want it, take the control unit off the bracket and mark the holes with a pencil making sure the unit's front is even along the front of the underside of the keyboard. 4. Mark your drill bit so it won't penetrate beyond the length of the screws. (I wrapped masking tape around the drill bit so that only the 1st 1/2" is exposed). Always measure twice and drill once! 5. Attach the bracket with the wood screws securely so that there is little chance of vibration. 6. Mount the 850 control unit to the bracket per the instructions that came with the bracket. 7. Route your cables out the back of the unit so they are hidden. I used self sticking Velcro strips to keep the cables up under the piano and thereby keeping them easy to move/remove and vibration free. I try not to cross a lot of cables with others as sometimes this can cause noise in the system and digital errors in the disklavier system. The idea is to keep the piano as original as possible so other than these 3 small shallow screw holes, the piano can be upgraded through the years and not show much modification. See photos uploaded in the Photos section of this site under DKC-850 left mount album for reference. Good luck, and feel free to ask questions and pose suggestions. KC