I'd love to upgrade the power supply on my 909.

My favourite lab notebook is made by HIG and has a plasticated cover and a clear bookmark thing. I got it when I worked for German company a few years back. I've never been able to find more of them and the internet doesn't turn up much. Anyone know where to find them?

It is all because those darn talented software engineers just won't work for free. Loads of people get paid by commercial software companies to develop open source code, myself included. Even Microsoft pays it's engineers to contributes to open source. https://www.cnet.com/news/paid-developers-powe...

Are the panel mounting holes threaded?

There is one for the TX816 here...

http://www.noniandjim.com/Jim/tx816/tx816.html

LM709 used in the Cracklebox is getting tough to find.

CA3280's are tough to find too.

Sliders for early 2000's roland and korg gear.

The BA662A is an Operation Transconductance Amplifier not an OpAmp. That would make it a substitute in circuits that use things like the CA3080 or LM13600. You can see one used here in an SH-101 VCA. Note the pin one input via a transistor. Also the buffer on pins 7 and 8. The LM13600 has a similar ...

I imagine this would work similarly using a DUAL PRC, too? (this is great by the way and not something I would have thought about because operating on the false assumption that gates are fixed values and that's that seemingly leads one to some degree of stultification) Yeah a DUAL PRC would allow s...

You can run the outputs of the gate sequencer into a mixer and you get a cv sequencer. not exactly, because it's one output at a time, so it won't do anything interesting through a mixer - but your idea works nicely with a pulse divider though, in case you miss a sequencer Since only one step is on...

You can run the outputs of the gate sequencer into a mixer and you get a cv sequencer.

Look for guitar amp diy tutorials, there are some very detailed tutorials on applying tolex.

eg.

I use a CGS Stomp adaptor for that...


https://sdiy.info/wiki/CGS_stomp_box_ad ... r_version)

I'd think you would want to breadboard that circuit, in which case it would be a piece of piss to try both approaches. Here is an ms20 vcf with clipping diodes in an opamp feedback path.. https://www.aleph.co.jp/~takeda/radio/img/VCF-scheme.gif Here is a different diode in resonance path arrangement...

The Hypercard doesn't have a battery. They mention that because the original Yamaha Data cart did have a battery. This has nothing to do with the cell battery inside the DX7. You should replace the cell battery otherwise your DX7 will boot up with garbage internal presets, non 440Hz tuning, weird mo...

There is usually an A B or C given with the pot value. If there isn't you can assume it is linear.

0x8n note on, where n is the channel number (0..15)
0x9n note off, where n is the channel number.

0x89 and 0x99 is using channel 10, which is the standard channel for drums.
0x80 and 0x90 are using channel 1

The channel in the second byte applies to CC's as well as most other channelized midi data.

Yep. I used 12v for the phantom power. Not ideal but worked with my mic. Does that work with a U87 or something requiring 48V? Most mic's spec the phantom supply voltage they need and quite often it is less than 48v. There are standards for phantom at P12, P24 and P48 and some mic's support all thr...

Pinouts in the service manual. https://archive.org/details/yamaha_cx5mu_service-manual I'd drill a hole in the case and solder in an rca out from the composite pins. You can connect it directly to the yellow rca input on a television. I've got the australian one that has the rca output already there.

There is also Camomile for turning puredata into VST(i)

https://github.com/pierreguillot/Camomile

I'm not sure what's up with the food and beverage theme

I recently got a schertler jam 100. It's a bi-amplified acoustic amp but it sounds sweet on my jazz box guitar. It mounts on a PA stand, has a DI out and comes in a bag that I can sling over my shoulder while carrying my guitar case in the other hand. I find tube amps are way too heavy if you gig ou...

Is there a schematic?

edit: found it here.. https://aisynthesis.com/wp-content/uplo ... VCF-V1.pdf

Without attenuation/amplification, wont the modular levels be too large for external processors?

Most of the send/receive modules I've seen attenuate heavily on the send and then amplify accordingly on the receive.

Sure. I'm just giving some reasons why full range 14bit messages are not commonly sent for midi controllers. Another issue to deal with is noise. The higher the bit depth, the more noise is an issue. If you are using a 14bit ADC to sample the potentiometer then the least significant bit is going to ...

There would be stepping regardless of the resolution. The midi data rate is low enough that if you get 14bits from a control, you will not be able to send all the individual values over a sweep unless it is very slow. For example, sweeping CCW to CW would require 16384 x 6 byte messages, but the max...

I think it is a mechanical problem. For potentiometers, how finely can you turn a knob? You are expecting 16384 values over a 270 degree turn which I think is physically impossible for a normal sized knob and our fingers. It might make sense for a multi-turn pot. Would you expect 16384 midi messages...