Passive Mult

The Passive Multiple (or “mult”) is used to split a signal and send it to multiple inputs. This mult is in a 2x4 configuration, meaning that the jacks are connected in two groups of four; the top four and the bottom four. The fifth jack is normalled to the first, so if you don’t plug anything into the fifth jack, the signal from the first jack will go to jacks 6-8 as well as 2-4. This Passive Multiple is only 2hp (5mm) wide, so you can put one just about anywhere in your system.

When signals are split using a passive mult, the voltage of each output will drop slightly as the signal is split. For most CVs or audio signals this is usually acceptable, but for precise CVs (like a V/Oct CV) this drop will be an issue. This issue is solved with a buffered mult, which buffers each output so there’s no voltage drop. The tradeoff is that a buffered mult is more complicated, requiring a power connection and amplifiers. This passive mult by contrast, is probably the simplest module ever, being simply a series of jacks connected together. This means it’s cheaper to buy and easier to build, so it’s worth picking up a few for signals that don’t require high precision.

If you’re just learning to solder, the kit for this module is an ideal starting point. It only takes about 5 minutes to assemble. Our Passive Mult kit contains everything you need to assemble a working module (except soldering tools, of course).

There isn’t a build guide for this module yet. If you need help assembling a kit, please email hello@trashbyte.io and I’ll see what I can do.

All of these modules are open source. This particular module is available under the MIT license. All of the source files are available on GitHub here.

Source Files