Tag: modular

Limaflo MotoMouth – DIY Build

Limaflo MotoMouth Eurorack Module - DIY Build

Completed MotoMouth Module Front View

As the summer is ticks along, we decided to take on a relatively new module. The LimaFlo MotoMouth Formant Filter. MotoMouth was originally a Kickstarter project that was first launched in March of 2017, and thanks to its backers, the MotoMouth was born. Our buddies over at Synthrotek were one of the first to have the DIY kits and you better believe we had to get our hands on this one and line it up for our final July build. 

Before we get into the build notes, videos and audio samples, you are probably wondering what in the world that the MotoMouth does. The Motomouth is described as an analogue 3-Band, Sedra + Espinoza Bandpass Filter (DABP) with resonant frequencies that are tuned to the same resonant frequencies that are found in the human mouth and nose cavities.

These frequencies can be varied, independently, to form different ‘mouth shapes’, to emulate vowels such as A, E, I, O and U.  In the end, this module can essentially emulate 16 vowels and ‘morph’ or ‘glide’ between each vowel using a single Control Voltage input (1V/Oct), and a Gate to ‘snap’ to each vowel when required. 


Rat King Modular SEQ (Random Sequencer) – DIY Build

RK Random Sequencer (SEQ) Modular Build

Rat King Modular SEQ DIY Kit

For our first build of July, we take on the Rat King Modular Random Sequencer (or SEQ as it’s known). This build is hot on the tails (no pun intended!) of the EVENT that we completed last month and we have to admit it . . . it was just as fun to build as the EVENT.

The Random SEQ panel and PCB are laid out similarly to the EVENT with its matte black panel and mustard yellow PCB. The blue hue from the LED below the panel appears frosted as the LED is not a panel through mount.

One might question how many more modules the Rat King will make… all we can hope for is a lot more!

As for the build itself, it was a quick and easy build for the advanced or intermediate builder lasting only about an hour. For the novice builders, this is a great one to get your feet wet with as the BOM and quick setup instructions (provided with the kit or available online) allow for easy reading. 


Rat King Modular EVENT – DIY Build

RK EVENT Eurorack Modular Build

Rat King Modular - EVENT DIY KIT

For the final build of June 2019 we took on the Rat King Modular EVENT, which to our surprise was a hidden gem for our eurorack system. The EVENT is the first eurorack module by Rat King Modular and we have to say, it’s a little beast. The panel is beautifully designed and the layout of the knobs and the jacks makes the EVENT easy to maneuver while recording or performing.

The matte black design with gold highlights is backed by a mustard yellow PCB who’s layout is easy and concise to follow. The dual sided PCB accepts solder like a sponge which makes this build a hassle free and not to mention fun build. So lets get onto the build…


Noise Filtering Power Distribution Board by Synthrotek

Noise Filtering Power Distribution Board - DIY Kit

Instagram Photo - SR Noise Filtering Power Distribution Board Kit

At the core of all our modular racks is power. As with any eurorack module, the most common type of connector is the ribbon cable either with a 10-pin connector or a 16-pin connector. What those connectors plug into is either a busboard on a PCB or a flying bus cable. We will be taking on the Synthrotek Noise Filtering Power Distribution Board for our first June build.

We have a large custom Eurorack case that we need to fill with modules and we needed noise filtering distribution boards to ensure we have the best power/noise filtering available… Synthrotek answered the call!

We opted for this board because it has power on all three rails (-12, +12, +5) and contains an LED for each rail so that we know the power is flowing like it should. The cool thing about this distro board is that it also has its own ground connection on each rail. It can be used in conjunction with the Synthrotek Power Supply System or it can be used with various other power supplies.

On to the build, time lapse and galleries…


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