Yamaha cs15d service manual

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If the presets are just different sets of resistors for each parameter, just remove them from one of the presets and make it so there are pots between those points and voila? Resurrecting this old thread as I'm just about to receive a 15D I'd like to ask anyone with a CSD how they control it with midi, I know it has an odd CV system so any good recommendations for a midi to CV converter?

Kenton I presume? Kenton is the ticket. I use a Kenton Pro Solo to interface with mine and it works beautifully. One pro tip is to get some splitters and trigger both synths at the same time. Some clarification. I should have clarified. I meant splitter cables. If you had two Kenton boxes you can use the CS like two monosynths. Thanks Vrumjaago What are these splitters you've mentioned? The beatstep pro works really well with my CS So, you can fully sequence it like two separate synths all from the Arturia.

It also works as a through put midi to CV converter like the Kenton so you can sequence it from your Daw. The only drawback to the Beatstep Pro is that the power connector is a USB c port which is prone to breaking, so it's best for studio use only. Thanks so much guys Both the Kenton and Beatstep are good, I will now investigate further For over 5 years now I've wanted a mint condition CSD, I finally found one that looks brand new, I'm waiting whilst it's in transit from Japan and I'm excited as well as concerned due to shipping delays due to the corona epidemic.

Bad timing I know! If you're into DIY, there's a cool mod to replace the preset section with a copy of the voice 2 controls I have tried switching all of the other settings in the boxes but the note is constantly being held no matter what changes I make. I have a CS So, it's a cousin to the CSD. But, the settings are the same. I would suggest updating the Beatstep Pro firmware. This will eliminate the possiblilty that it's a midi loop causing the sustain. If the synth is still sustaining nonstop when triggered, I'm not sure.

In the upper left corner, in blue, you see the power supply subcircuit for the board see also The Tr7 Problem in this article. The various OpAmps on the board connect directly to it. The inputs From Control Pot are connected to the two brown on-board connectors which connect to the potentiometers and switches on the control board. These two connectors are the original connectors that are normally connected to the PM1 preset board.

When installing the modification, not only is the preset board for channel one removed, but also the presets for channel two. Therefor we need to implement the functionality of the channel 2 Manual switch. I have installed three external control volatge inputs for pulse width, filter cutoff and resonance amount. They are simply added the respective control pot inputs of the OpAmps. The external inputs are laied out for input signals in the V range.

That is basically the whole shebang of the mod. I will try to come up with proper schematics of the board eventually. I have already started it. You would of course have to find the correct values for the control pots in ther sevice maual, but if I could do it you can do it.

For discussions please refer to the muffwiggler thread. So long…. When I opened the synth the first time I was pretty surprised by what preset meant before the time of affordable digital memory! Each preset is a set of resistors defining the CV values of the parameters. The channel 1 and 2 presets reside on distinct PCBs. I eventually managed to grab a copy of the service manual, and it made it pretty obvious that it would not be too hard to replace the presets by controls.

The service manual reveals that all parameter CVs use the same 10V voltage source. The preset selectors route this source to the respective preset subcircuit. Channel 1 manual mode is not so much different. The voltage source feeds the control pots that are buffered by op-amps.

The overal design of the synth proved execellent for the modification.