The Big Room (Reverb)
This module merges the Polyfusion reverb driver circuit with the NLC Segue for VC panning between wet and dry signals. It also has a VC feedback circuit....be careful with that one 😁
The driver circuit was used in the NLC CellF Voice panel, I always liked it and received good feedback from people who owned these panels, so stuck with the design. The downside is it rquires a particular reverb tank, which is easily available for USD19, so not really a big deal. Builders could try experimenting with the driver circuit to make it work with other tanks but imho it sounds thick and cavernous with the tank it is designed for.
The PCBs form a giant vactrol case for the LDRs used in the panning circuit.
Build Guide and other info on the NLC wiki
PCB set = USD24
Panel = USD22
assembled = USD200 (Reverb tank not included, it will be much cheaper to order your own directly from the supplier) If in EU, maybe cheapest from here.
The driver circuit was used in the NLC CellF Voice panel, I always liked it and received good feedback from people who owned these panels, so stuck with the design. The downside is it rquires a particular reverb tank, which is easily available for USD19, so not really a big deal. Builders could try experimenting with the driver circuit to make it work with other tanks but imho it sounds thick and cavernous with the tank it is designed for.
The PCBs form a giant vactrol case for the LDRs used in the panning circuit.
Build Guide and other info on the NLC wiki
PCB set = USD24
Panel = USD22
assembled = USD200 (Reverb tank not included, it will be much cheaper to order your own directly from the supplier) If in EU, maybe cheapest from here.
Dual LPG
Dual Low Pass Gate - pretty standard except it uses the black box vactrol method seen in the Shat-noir Phaser and Noiro-ze VCF/VCA. DG analogue switches are used for changing between filter and gate modes.
PCB set = USD24
Panel = USD22
assembled = USD200
soundcloud demo by Steve
PCB set = USD24
Panel = USD22
assembled = USD200
soundcloud demo by Steve
Noiro-ze VCF & VCA
This module uses the same blackbox technique as the Shat-noir Phaser.
The VCF is based on the Steiner diode VCF but this one uses LDRs rather than diodes and a CV control system to suit. The nice thing about this filter is you can feed different signals to the LP, BP & HP inputs then surf between them with your CV, quite different from regular filters.
The VCA is really there to use up a spare op amp and is based on the Korg PS3100 VCA, works very well for what it is.
PCB set = USD24
Panel = USD22
assembled = USD210
Build guide and other info on the NLC wiki
The VCF is based on the Steiner diode VCF but this one uses LDRs rather than diodes and a CV control system to suit. The nice thing about this filter is you can feed different signals to the LP, BP & HP inputs then surf between them with your CV, quite different from regular filters.
The VCA is really there to use up a spare op amp and is based on the Korg PS3100 VCA, works very well for what it is.
PCB set = USD24
Panel = USD22
assembled = USD210
Build guide and other info on the NLC wiki
Shat-noir Phaser
The core of the Shat-noir phaser is based on classic LDR based phaser
designs, notably the Carlin, Compact Phasing A, Morely Phaser and ADA
final Phase. The CV drive is an anti-log circuit, it works a little
differently as both the CV and phase pots must be adjusted to find the
sweet spots.
The In2 pot is 0 at centre, the incoming signal is inverted below that.
it is intended as a feedback input for one of the stage outputs, but
shove in whatever you want of course.
Please note the build pictures below when constructing to make the box fairly light-proof. A little bit of leakage does not seem to matter much but you could add a bit of black silastic sealant around the edges if you really want to. When soldering the connector pins, use the SIP connectors, jumped across 1 or 2 pins (see pics) to ensure they are nicely perpendicular to the PCB. When soldering the PCB to PCB connectors, I press lightly on the PCB to help keep the connectors tight against the board.
The PCBs are 2mm thick with black soldermask to prevent light getting in. Also, please note the pots go on the side of the PCB that has the pot symbol screenprinted, this is different to previous NLC PCBs……I try to conform, its hard, really hard. Anyway look at the pics to make sure.
Soundcloud demo by Steve
PCB set = USD24 Panel = USD22 assembled = USD220
Buildguide here
Please note the build pictures below when constructing to make the box fairly light-proof. A little bit of leakage does not seem to matter much but you could add a bit of black silastic sealant around the edges if you really want to. When soldering the connector pins, use the SIP connectors, jumped across 1 or 2 pins (see pics) to ensure they are nicely perpendicular to the PCB. When soldering the PCB to PCB connectors, I press lightly on the PCB to help keep the connectors tight against the board.
The PCBs are 2mm thick with black soldermask to prevent light getting in. Also, please note the pots go on the side of the PCB that has the pot symbol screenprinted, this is different to previous NLC PCBs……I try to conform, its hard, really hard. Anyway look at the pics to make sure.
Soundcloud demo by Steve
PCB set = USD24 Panel = USD22 assembled = USD220
Buildguide here
Mogue mixer & VCA
MOGUE is a VCA and Mixer inspired by early Moog designs, with some mods to
get them into ‘Eurorack standards’ (!). Both circuits can be overdriven
to get some wave-shaping action. The mixer can handle CV and audio but
the VCA is audio only (tho feel free to place links instead of the capacitors to make it work for DC). Some users consider these 2 modules are an
inherent part of the legendary Moog sound…maybe; I just wanted to use up
all my LM394.
Build info HERE
PCB set = USD23
Panel = USD20
assembled = USD190
Build info HERE
PCB set = USD23
Panel = USD20
assembled = USD190
It's 555 .... resonator (Eurorack version)
This is a set of five 555 based one shot circuits.
Each has CV and pot controlled pulse width and the pulse for each can be set to be negative going or positive at any desired amplitude. The circuit is supposed to be driven by a signal from a VCO, but noise or chaos sorces are fun too. It creates five pulses that can be individually manipulated to create a complex and harmonically rich waveform. A slower clock signal will give clicks and glitches (so, a voltage controlled glitch module).
As the pulse widths can be individually controlled (or controlled en masse by “CV all”), this waveform can be continually morphed to get new sounds. When the 5 pulses are quite thin the effect is that of a resonator. The controls allow a wide pulse width, so fatter, thicker sounds can also be created.
PCB = USD20
Panel = USD24
assembled = USD230
Kareishuu VCO
PCB set = USD23
10HP Panel = USD22
assembled = USD210
This VCO was mainly designed as an upgrade for the dual OTA VCO. It is a traditional triangle core VCO with a built in VCA for the FM control section. The design draws on sections of the Electronotes EN1, EN2 and EN3 VCOs along with some NLC injected in there for good measure.
It has much better tracking, a sine output and attenuators for all inputs. The self modulation control via the FM VCA enables voltage controlled waveshaping, the sine and tri waves can morph between their original shape to a pulse.
The pot spacing is quite tight, so I suggest using T18 knurled shaft pots along with the micro knobs. Other than the 1k tempco, no rare parts and a fairly easy build.
10HP Panel = USD22
assembled = USD210
This VCO was mainly designed as an upgrade for the dual OTA VCO. It is a traditional triangle core VCO with a built in VCA for the FM control section. The design draws on sections of the Electronotes EN1, EN2 and EN3 VCOs along with some NLC injected in there for good measure.
It has much better tracking, a sine output and attenuators for all inputs. The self modulation control via the FM VCA enables voltage controlled waveshaping, the sine and tri waves can morph between their original shape to a pulse.
The pot spacing is quite tight, so I suggest using T18 knurled shaft pots along with the micro knobs. Other than the 1k tempco, no rare parts and a fairly easy build.
STATUES
PCB = USD18
Panel = USD20
Assembled = USD160
Not trying to get all MI-y with the name, it comes from the children's game also known as Red Light Green Light.
This is a 1 to 8 multiplexor....or multiplexer if you prefer....with a thru and hold circuit attached to each output. the active output is chosen by whichever combination of the x00, 0x0 & 00x inputs is high. You can put any signal into these, crossing 1V will send it high. In the demo video, I used the /2, /4 & /8 outputs from a Divide & Conquer which gives it a regular 1-8 count. Using any old signals will give a more random effect but patterns will still emerge.
IN is the signal getting processed.
This module can be used to process CV and/or audio signals.
Build guide and panel template on the NLC wiki
The 1st part of a video shows a sine wave being re-constructed when the 4 outputs are aligned on the 'scope.
Panel = USD20
Assembled = USD160
Not trying to get all MI-y with the name, it comes from the children's game also known as Red Light Green Light.
This is a 1 to 8 multiplexor....or multiplexer if you prefer....with a thru and hold circuit attached to each output. the active output is chosen by whichever combination of the x00, 0x0 & 00x inputs is high. You can put any signal into these, crossing 1V will send it high. In the demo video, I used the /2, /4 & /8 outputs from a Divide & Conquer which gives it a regular 1-8 count. Using any old signals will give a more random effect but patterns will still emerge.
IN is the signal getting processed.
This module can be used to process CV and/or audio signals.
The 1st part of a video shows a sine wave being re-constructed when the 4 outputs are aligned on the 'scope.
Ian Fritz's Hypster
Ian Fritz designed an awesome hyperchaos circuit and gave me the go ahead to let it loose on Eurorack.
You can read the discussion on this design on the muffwiggler thread
This is Ian's introduction in his article on the circuit: The Hypster is an electronic fourth-order hyperchaos generator for use in modular electronic music systems.
Hyperchaos is chaos on steroids, with the mathematical divergences being generated in more that the usual single dimension. The module is a unique, original design featuring voltage control of the main system parameters.
In synthesizer applications this module can produce signal waveforms varying from simply periodic to complicated multiperiodic to extremely dense and complex, both in the low frequency control range as well as up into audio frequencies. With an eight-signal output it can simultaneously control a large number of synthesizer parameters or generate multiple audio waveforms for individual processing.
The circuit is built around four voltage-controlled integrators connected in a ring, similar to the configuration of an oscillating ladder filter. But that is where the similarity ends. Each integrator includes damping, making the system more like the 6/8 phase oscillator described on my website. Most importantly, special circuit elements between the four integrators provide the nonlinearities required to produce chaotic oscillations. The gain and resonance of one of the stages may be varied. Varying these parameters produces a wide range of periodic and chaotic signals. These
parameters, along with the overall oscillation rate are under voltage control.
It is very wide ranging, from approx 3kHz down to 5 minute orbits, capable of a huge variety of patterns and is particularly partial to being controlled by various CV signals.
PCB set = USD26
White Panel = USD24
Black Panel = USD25
'B' stock black panel = USD20 (these have some very minor defect; scratch or dust under soldermask)
assembled = USD250
You can read the discussion on this design on the muffwiggler thread
This is Ian's introduction in his article on the circuit: The Hypster is an electronic fourth-order hyperchaos generator for use in modular electronic music systems.
Hyperchaos is chaos on steroids, with the mathematical divergences being generated in more that the usual single dimension. The module is a unique, original design featuring voltage control of the main system parameters.
In synthesizer applications this module can produce signal waveforms varying from simply periodic to complicated multiperiodic to extremely dense and complex, both in the low frequency control range as well as up into audio frequencies. With an eight-signal output it can simultaneously control a large number of synthesizer parameters or generate multiple audio waveforms for individual processing.
The circuit is built around four voltage-controlled integrators connected in a ring, similar to the configuration of an oscillating ladder filter. But that is where the similarity ends. Each integrator includes damping, making the system more like the 6/8 phase oscillator described on my website. Most importantly, special circuit elements between the four integrators provide the nonlinearities required to produce chaotic oscillations. The gain and resonance of one of the stages may be varied. Varying these parameters produces a wide range of periodic and chaotic signals. These
parameters, along with the overall oscillation rate are under voltage control.
It is very wide ranging, from approx 3kHz down to 5 minute orbits, capable of a huge variety of patterns and is particularly partial to being controlled by various CV signals.
PCB set = USD26
White Panel = USD24
Black Panel = USD25
'B' stock black panel = USD20 (these have some very minor defect; scratch or dust under soldermask)
assembled = USD250
Let's Splosh!
This is 8 different rectifiers processing 4 input signals. It is happy to work with audio or CV or both at the same time. It has 16 outputs that will deliver 16 different signals made up of components of the 4 incoming signals. To put it simply, it makes a gloopy mess of the incoming signals and smears it all over your patch. If this module name and the food names make no sense look up some sploshing videos on youtube. That is pretty much what this module will do to your CV and audio signals with corresponding amounts of pleasure for the receiver.
PCB = USD20
panel = USD24
assembled = USD180
Build guide is HERE
