I bought a $28 E-MU Xmidi from Amazon (http://amzn.to/mSYfbD) and it works for my Disklavier and HCX.
--- In disklavier@yahoogroups.com, "mjburby" wrote:
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> So George, I decided to try this out having just bought a new iPad2.
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> I bought a generic USB and HDMI combined adapter - didn't see the point in buying these separately when I could have them on one device.
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> Also, there many cheap MIDI to USB cables on the market - just look on eBay.
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> So having got all this and tested them to ensure they were working I started the setup for my MKIV. I've hit a couple of snags.
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> Firstly, the MIDI cables - the ports on the DKV are almost impossible to access. Has anyone else noticed this?? I've used MIDI cables before and they're fairly standard in terms of the end connectors but for whatever reason, Yamaha has installed the units under the piano in such a way as to make these ports virtually inaccessible. There is a wooden support strut only an inch or so away from the ports (particularly the MIDI OUT port). The only thing I can possibly consider is to unscrew the control unit?! Perhaps I'm missing a trick here and there are another pair of MIDI ports more easily accessible. Can't believe I'm the only one to experience this.
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> I eventually did manage to get a connection into the MIDI IN (MIDI OUT was not possible) and so hooked up the iPad. With a similar experience to testing the HDMI port with a television, the iPad didn't recognise the connection immediately, perhaps there was some hidden installing of a driver or whatever.
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> However, after a few minutes the MIDI connection was visible from the HCX application. A reassuring power light was seen on the cable display unit with a little flashing MIDI OUT light - so power from iPad to cable was sufficient.
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> All good so far (noting that I was only able to try out the MIDI OUT from the iPad to MIDI IN on the DKV). I found this a bit hit and miss. Some of the built in midi files were able to control the piano both hands, some when played only played the right hand, others didn't play either hand. Perhaps this is something to do with the midi files themselves rather than the piano or HCX software. I made sure that the '2-hand' mode was on throughout. The background accompaniment was sent successfully to the DKV synthesizer for all tracks. If the piano tracks were not sent to the piano keyboard, the DKV synthesizer played the piano part.
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> Now I'm assuming that this problem was not caused by having just one MIDI connection to the piano, but who knows, perhaps this isn't an issue if I was able to plug in the MIDI OUT port.
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> Otherwise, this is a great application. I can't wait to get the MIDI OUT connection made to try out the learning/following functions of HCX. If you need some input from a product improvement perspective I'd be happy to provide this.
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> I'd be grateful if anyone could provide some advice on the MIDI port accessibility issue and some insight into the 2-hand /1-hand/no-hand issue too.
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> Thanks
> Mark
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> --- In disklavier@yahoogroups.com, George Frederick Litterst PianoBench@ wrote:
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> > Good evening, everyone.
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> > Both the UX16 and the UX96 are USB MIDI interfaces. The UX16 has two hardwired MIDI cables as part of the interface: one connects to MIDI Out of your keyboard and one connects to MIDI In of your keyboard.
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> >; The UX96 has MIDI In and Out ports but you need to supply MIDI cables to connect to them. The interface also supplies a serial port. The serial port is essentially an obsolete port. However, if you have a Mark III or older Disklavier or similar generation tone generator with a serial port, you can use that port if you wish.
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> > NOTE: A Disklavier owner informed me the other day that he could not get the UX96 to work with the Apple Camera Connection Kit USB adapter and the iPad. Based on his experience, it seems as though the device may require more power than the iPad is willing to provide. I have not had a chance to verify this.
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> > Regards,
> > PianoBench