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  • keyman2's Avatar
    Today, 03:03 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Thanks for the great info, I've yet to engage them, but I've seen them over the years and played with their program - certainly good to let anyone...
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  • keyman2's Avatar
    Today, 03:58 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Sounds great, you've been on this for a fair bit so it's good to hear the wheels of industry are finally engaged... ; ) Protoboards are a poor...
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  • keyman2's Avatar
    05-16-2013, 03:24 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Check out any local recyclers or even thrift shops for related equipment/gear - they can be a great resource for the hobbyist! Old adapters/...
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  • keyman2's Avatar
    05-16-2013, 03:16 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    I'm sure the original posters are more than interested in what you're doing - they're just onto related ambitious projects. It takes a serious...
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  • keyman2's Avatar
    05-15-2013, 02:27 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Noise is definitely a very cheap, affordable option -you have your choice of analog (reverse biased diode junction) or digital (pseudo-random...
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  • keyman2's Avatar
    05-12-2013, 07:15 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Another neat site & utility - good stuff! The only thing that might be worth pointing out is that the devices themselves should be similar to the...
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    550 replies | 52342 view(s)
  • keyman2's Avatar
    05-11-2013, 04:10 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    David, I missed your additional photo's the last time - that's pretty clever as far as the mechanical keyboard stacking, must have been a bit of work...
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  • keyman2's Avatar
    05-08-2013, 10:06 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Just general observations & suggestions, I haven't looked at the related diagrams in detail that way, but may work or at least inspire related...
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  • keyman2's Avatar
    05-07-2013, 01:14 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Mseven, if you use a musical top-octave style divider, which generates all the semitones versus the basic built-in octave dividers (chain of divide...
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  • keyman2's Avatar
    05-07-2013, 12:50 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Learned that with a related CS-80...the minute they tell you to email them that way, it's certain to be a Phishing scheme...
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    550 replies | 52342 view(s)
  • keyman2's Avatar
    05-06-2013, 01:07 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    I gather most users have the idea to be able to 'enhance' without affecting the default features? It looks like David is leaning to do something...
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  • keyman2's Avatar
    05-05-2013, 04:59 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Cool! Guess what I just downloaded... : ) Sure, the best thing is to have dual VCO, but baring the fact the E-50 only has one 'DCO' (two with the...
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  • keyman2's Avatar
    05-04-2013, 03:21 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Not a bad idea to model or look at equivalent architectures before you make the hardware. Most synths will add the two vco's of a typical patch...
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  • keyman2's Avatar
    05-03-2013, 03:21 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Amazing model by the way! All the 3-D lighting effects and reflections are terrific - a real work of art, down to the finest detail!
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  • keyman2's Avatar
    05-02-2013, 12:24 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    ... yeah, but if you modulate the amplitude, you get ring modulation - or tremolo if you can only manage low frequency modulation.
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  • keyman2's Avatar
    04-30-2013, 01:02 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    (I haven't looked at all the related detail, just the main ones) The supplies are +/-38V, +/-27V , -20V and +/-15V, there is an SCR crowbar...
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  • keyman2's Avatar
    04-30-2013, 12:09 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    One for each manual? That would work out fine, just get the respective voltages on the same reference before you start feeding things... : )
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  • keyman2's Avatar
    04-29-2013, 09:10 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    What's your aim on the power supply? To replace both with a common source or fix a broken one? You obviously can leave out all the related power amp...
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  • keyman2's Avatar
    04-29-2013, 12:31 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Egads, not only chopped, but stacked as well! : ) The solo synth is similar to a CS-5 but having digital control of envelope and presets. You...
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  • keyman2's Avatar
    04-28-2013, 11:50 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Phew, you almost started up a whole side thread on that.... : )
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  • keyman2's Avatar
    04-28-2013, 04:29 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    I would hazard a guess that it was something added on after the fact? (pun intended)
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  • keyman2's Avatar
    04-27-2013, 08:25 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Certainly another easy option for improved sound, especially if you already have the outboard gear - can't recall, but there are fittings for...
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  • keyman2's Avatar
    04-27-2013, 03:08 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    The more you think about it, it does provide a useful keyboard split/layer feature that is easily done and something more readily seen on a modern...
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    550 replies | 52342 view(s)
  • keyman2's Avatar
    04-27-2013, 12:33 AM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Actually, it's a bit more flexible than the coupler built into the E series as the upper and lower modification settings remain independent ( i.e....
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    550 replies | 52342 view(s)
  • keyman2's Avatar
    04-25-2013, 10:09 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Good to know about the D-85, it has more than enough coupling already though, no? there was the other fellow on the list that tried to directly...
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  • keyman2's Avatar
    04-24-2013, 11:34 PM
    keyman2 replied to a thread Yamaha D-85 Part in Electronics
    David, how did you make out with the D-85, did you manage to whittle it down to a smaller size? Any mods along the way?
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  • keyman2's Avatar
    04-24-2013, 11:16 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    ...coupling is already built-in on the E-70 and presumably the E-75. The D-85 can layer quite a few different instruments thanks to the custom...
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  • keyman2's Avatar
    04-23-2013, 11:36 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Son of a gun, you've done it again Marc....
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  • keyman2's Avatar
    04-23-2013, 11:29 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    A bad capacitor, diode or shorted regulation transistor will result in excessive current draw and audible buzz from the audio - if you have no...
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  • keyman2's Avatar
    04-23-2013, 11:19 PM
    keyman2 replied to a thread Unlocking the Yamaha E70 in Home Organs
    Never looked into this exactly....A big stick bridging across each key? : ) Okay, I'll bite, how did you do this? The related electronics are very...
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    550 replies | 52342 view(s)
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  1. keyman2
    Currently own a CSY-1, CSY-2AE, D-85 and E-70

    Interested in related service guides/manuals etc., modifications, technical related subjects/discussions, electronics etc.
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Yamaha CSY-1, CSY-2E, D-85, E-70

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