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Frequency Central

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Frequency Central

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Items 1 to 19 of 19 on page 1 of 1
Frequency Central Arley Dynamics ADSR & VCA Module
Cat: 803240 Rel: 04 Dec 20
 
Combined ADSR/VCA module in 6HP package
Notes: A combined ADSR and VCA in a small 6HP package with some novel features

Arley Dynamics takes Frequency Central's super snappy CEMvelope, marries it to a VCA from their More VCAs, and throws in a bunch of extras. The result is a super compact combo to control the dynamics of your system.

The ADSR side of Arley Dynamics is based around the famous AS3310 Curtis clone chip, a classic ADSR which pays homage to the SCI Pro One of the past. It has a couple of handy additions to it's functionality:

As well as Normal output, there's an Aux output, which can be selected via a jumper on the rear of the module to give out either normal or inverted envelopes.

The Level CV input can be used to externally control the output level of the ADSR for full dynamic control. Uses include velocity sensitivity, or automated level controls.

The VCA side of Arley Dynamics is OTA based and pays homage to ARP VCAs of the past. Full of warm analogue goodness, it adds some extra functionality:

Selectable CV source, either ADSR or Gate

Drone feature - handy for when you need a constant output for tuning up for example

The Normal output of the ADSR section is normalised to the CV input of the VCA section, you can override this by patching an external signal into the VCA's CV input. So the ASDR and VCA sections are both fully modular and can be used fully independently within your system.

12V draw: 18mA

-12V draw: 18mA

5V draw: 0mA

Depth: 35mm

Width: 6HP
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Frequency Central Boom!! Analogue Drum Voice Module
Cat: 800468 Rel: 13 Nov 20
 
Analogue drum voice module
Notes: Boom!! is an analogue drum voice with a broad range of applications.

The heart of the module is a VCO which is built around one half of a LM13700. The VCO has a HIGH/LOW switch as well as a SWEEP control, which defines it's response to the onboard envelope.

The other half of the LM13700 has been carefully crafted into a release envelope generator, which has a FAST/SLOW switch in addition to a RELEASE control. As a bonus, the input of the envelope is velocity sensitive, allowing for a dynamic response.

Additionally, there is an envelope output, which can be used to drive external modules.

Boom!! can be used to create bass drums, tom toms, chirps, blips and clicks. Check it out now.

Depth: 35mm

Width: 4HP

12V draw: 10mA

-12V draw: 9mA

5V draw: 0mA
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MRP:$164.93 SAVE 23%
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Frequency Central CEMvelope ADSR Module
Cat: 679928 Rel: 13 Jul 18
 
All-analogue ADSR module - 4HP
Notes: CEMvelope is based on the legendary ADSR section of the Sequential Circuits Pro-One monosynth, with minor adaptations to integrate it into Euro format. Smooth and snappy! It has a gate input as well as a trigger input, the trigger input works in conjunction with the gate input for multiple triggering from a suitable controller device.
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MRP:$137.44 SAVE 30%
 4 in stock $95.85
Frequency Central High Towers Programmmable & Addressable 4-Channel Voltage Controlled Clock Divider Module
Cat: 794787 Rel: 09 Oct 20
 
clock modulator/frequency divider/quad synth module
Notes: High Towers is our brand new super flexible clocking module. At it's heart it is based on the principles of clock division of an incoming clock signal. High Towers has 4 assignable outputs, each of which can be assigned a clock division in a number of different ways:
Manually assigned using a potentiometer.
Assigned by external CV (in which case the associated potentiometer becomes a CV attenuator).
Assigned by one of High Towers' internal presets.

High Towers is able to receive external clock and reset pulses. High Towers internally divides the incoming clock pulses by 1, 2, 4, 8, 16, 32, 64 and 128. Each of High Towers 4 assignable outputs can stream any of these divisions.

High Towers comes pre-programmed with 8 preset division models. The division models set each output to stream a particular division. The division that any given output is streaming can be over-ridden manually or by external CV.

High Towers comes pre-programmed with 8 different direction models. The direction models select whether High Towers counts up, down, up/down, or various combinations of up and down.

Product Specifications
Depth: 35mm
Width: 10HP
12V draw: 15mA
-12V draw:11mA
5V draw: 0mA
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MRP:$263.88 SAVE 23%
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Frequency Central Little Melody Generative Sequencer Module
Cat: 781995 Rel: 07 Jul 20
 
Sequencer module
Notes: Little Melody is a generative sequencer based around clock divisions and a chromatic quantiser, used to create in-the-moment licks and riffs. It is more that the sum of its parts.

Little Melody's internal operations can be considered as 4 clock dividers patched into a CV mixer via attenuators. The attenuators select notes over a 5 octave range, the clock dividers determine how often those notes are added to the mix. The final output of Little Melody is quantized chromatically for fast set up and continuously pleasing results.
The 4 clock dividers are labelled A, B, C, and D. They all receive clocks from the same source, the divisions may be selected using the presets and the individual division selectors. The clock dividers can be set to count up, down, or to one of a variety of modes that move between counting up and down..

Product Specifications
Depth: 35mm
Width: 12HP
12V draw: 20mA
-12V draw: 16mA
5V draw: 0mA
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Frequency Central Little Melody Generative Sequencer Module (B-STOCK)
Cat: 789618 Rel: 07 Jul 20
 
B-STOCK: Slight surface marks
Notes: ***B-STOCK: Slight surface marks ***


Little Melody is a generative sequencer based around clock divisions and a chromatic quantiser, used to create in-the-moment licks and riffs. It is more that the sum of its parts.

Little Melody's internal operations can be considered as 4 clock dividers patched into a CV mixer via attenuators. The attenuators select notes over a 5 octave range, the clock dividers determine how often those notes are added to the mix. The final output of Little Melody is quantized chromatically for fast set up and continuously pleasing results.
The 4 clock dividers are labelled A, B, C, and D. They all receive clocks from the same source, the divisions may be selected using the presets and the individual division selectors. The clock dividers can be set to count up, down, or to one of a variety of modes that move between counting up and down..

Product Specifications
Depth: 35mm
Width: 12HP
12V draw: 20mA
-12V draw: 16mA
5V draw: 0mA
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 1 in stock $212.89
Frequency Central Monograf Synthesiser Module
Cat: 782271 Rel: 13 Jul 20
 
Synthesiser module
Notes: 20HP hardwired synth voice for fast set up times, with a decidedly East Coast feel.

Monograf is a fixed signal path monophonic synth voice with many unique features, including a number of patch points for flexibilty within a modular setting. Our aim was to design the simplest full featured and good sounding single VCO synth within as small a space as possible, while offering a broad sonic palette and fast setup times. Monograf includes the following elements:

Onboard LFO for PWM, and onboard sub osc for thick and juicy synth lines

Super stable AS3340 based VCO featuring sawtooth, triangle and square waveforms, as well as rotary switch control of octaves and an onboard LFO for PWM. Features highly accurate 1V/octave tracking, as well as extenal CV control of linear FM.

Sub oscillator featuring -1 octave and -2 octave square waveforms. Add a big bottom to your sound.

5 toggle switches for fast waveform selection, allows for super quick changes. Additionally, the triangle waveform is routed directly to the VCA, bypassing the VCF, to maintain a rumbling low end with higher resonance settings, this is a little known modular trick which was practised by the ancients.

12dB/octave OTA lowpass VCF based upon ARP Odyssey Mk1 'whiteface'. A very characterful VCF with cutting resonance whose audio inputs can be driven into clipping via a dedicated Drive control. The chosen level of drive can have a profound effect over the character of the filter, and heavy drive will saturate the input while simultaneously reducing resonance. Cutoff frequency can be controlled manually, from the LFO, from the ADSR, normalised from a 1V/oct source, or from an external CV.

Vintage ARP style VCA with gated/ADSR/drone options via two toggle switches.

AS3310 based ADSR for super snappy envelopes. CV control of envelope output is available for velocity controlled dynamics etc.

5V draw: 0mA
Depth: 35mm
Width: 20HP
12V draw: 38mA
-12V draw: 34mA
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MRP:$362.84 SAVE 23%
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Frequency Central More VCAs ARP Style Dual VCA Module
Cat: 732135 Rel: 15 May 19
 
Compact 4HP width dual VCA module
Notes: MORE VCAs is a compact 4HP width dual VCA module based upon similar circuits found in vintage ARP synthesisers. Use it where rack space is at a premium, and when you need that warm analogue goodness. Each channel features an audio input and output, together with a CV input. An Initial Gain knob is also provided for fine adjustment. This can be used like a Hold switch, if you want to create a drone sound. The audio inputs can be pushed hard to create a thick and natural overdrive. This can be used for a wide range of sound design possibilities.
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MRP:$137.44 SAVE 26%
 2 in stock $101.94
Frequency Central Polygraf Binary Step Sequencer Module
Cat: 782276 Rel: 10 Jul 20
 
Step sequencer module
Notes: Polygraf is a step sequencer that features record/edit and playback functionality across 32 different patterns of up to 16 steps.

Polygraf has four binary outputs (can be High or Low), labelled One, Two, Four, and Eight. During playback, Polygraf outputs a combination of High and Low for each of those outputs. The combinations can be edited by setting Polygraf to write mode and following the necessary procedure.

Depth: 35mm
Width: 10HP
12V draw: 47mA
-12V draw: 11mA
5V draw: 0mA
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Frequency Central Process 26 ARP 2600 Inspired Voltage Processor Module
Cat: 746964 Rel: 17 Sep 19
 
Synth module featuring two separate voltage processors
Notes: The upper voltage processor features four inputs which are mixed and inverted at the output. Inputs 2 and 4 have their own attenuator. Input 2 is normalised to a positive fixed voltage source, which may be attenuated, and appears inverted at the output, useful for applying negative offsets.

The lower voltage processor features two inputs which are mixed and inverted at the output. Input 2 has its own attenuator. Input 2 is normalised to a negative fixed voltage, which may be attenuated, and appears inverted at the output, useful for applying positive offsets.
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MRP:$103.08 SAVE 51%
 4 in stock $50.51
Frequency Central Reset Simulation Boolean Logic Module
Cat: 796770 Rel: 05 Nov 20
 
Boolean logic module
Notes: Reset Simulation is a Boolean logic module with two inputs, A and B, and 8 simultaneous outputs, NOT A, NOT B, AND, NAND, OR, NOR, XOR and XNOR. Each of the 8 outputs go high when their respective truth tables are satisfied by the A and B inputs. Legend has it that if the user can make all LEDs light up at the same time, the current simulation that we are living in will be replaced with another, slightly different simulation. Another legend has it that this has already happened multiple times. A further legend refutes both previous legends as the ramblings of a madman.

Product Specifications
Depth: 35mm
Width: 6HP
12V draw: 11mA
-12V draw: 7mA
5V draw: 0mA
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MRP:$184.17 SAVE 16%
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Frequency Central Seismograf SD Snare Drum Module
Cat: 782282 Rel: 13 Jul 20
 
Snare drum module
Notes: Seismograf is a PIC based drum module featuring coding by Jetroid. There is currently a choice of two PICs which may be used with Seismograf, 'BD' and 'SD'. As you might expect, BD contains a range of 8 bass drums, while SD contains a range 8 of snare drums. The drum sounds are 10 bit encodings of some of Frequency Central's favourite electronic kits from yesteryear. It is not possible for the user to load their own sounds onto Seismograf PICs, but there is a chance that we may release alternative drum sets as the years roll (!) by.

Select
This knob is used to select one of the 8 sounds to be triggered. It has a CV input associated with it, and when a jack is inserted into the CV input, the knob is used to attenuate the incoming control voltage. This CV input responds to 0V to 5V signals.

Tune
This knob may be used to detune the drum sound either upwards or downwards. It has a CV input associated with it, and when a jack is inserted into the CV input, the knob is used to attenuate the incoming control voltage. This CV input responds to 0V to 5V signals.

Distort
This knob may be used to introduce either one of two different types of distortion to your chosen drum sound. When set to the mid position (12 o'clock) no distortion is present. Turning the knob anti-clockwise will cause the sound to be progressively clipped harder, while turning the knob clockwise will cause the sound to be progressively more bitcrushed. This knob has a CV input associated with it, and when a jack is inserted into the CV input, the knob is used to attenuate the incoming control voltage. This CV input responds to 0V to 5V signals.

Secret Sauce
Try running the sawtooth output of an audio rate VCO into Seismograf's trigger input, then wiggle the Tune knob manually, or apply a control voltage to the Tune input. Seismograf acts almost like a fliter, and perhaps more akin to oscillator sync. As the incoming trigger is so fast, Seismograf only gets to play the initial part of it's waveform, less on high notes, more on low notes. Additionally, there is naturally higher frequency content the higher the note and so forth. Whatever's going on, it sounds awesome. More than just a drum module, right?
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Frequency Central Stasis Leak DSP Effects Module
Cat: 782283 Rel: 13 Jul 20
 
DSP effects module
Notes: Stasis Leak is a 6HP 48kHz DSP effects module, providing a choice of stereo chorus, stereo plate reverb and tap tempo delay. Stasis Leak is based around a Belton ABE-FX sub board, which in turn is based around a Coolaudio V1000 chip.

Time control
This knob controls a different function for each of the three effects (see chart at bottom). It is also associated with its own CV input, and when a jack is inserted into the CV input, the knob serves to attenuate incoming control voltages. This CV input responds to 0V to 5V signals.

Density control
This knob controls a different function for each of the three effects (see chart at bottom). It is also associated with its own CV input, and when a jack is inserted into the CV input, the knob serves to attenuate incoming control voltages. This CV input responds to 0V to 5V signals.

Tone control
This knob works on each of the three different effects as a simple lowpass filter, cutting the highs in the effected signal, and helping to provide definition between the dry and wet signal.

Wet control
This knob controls the amount of effected signal that is mixed with the dry signal. Dry is always 100%. On the rear of the module there is a Dry Lift jumper, this can come in useful when Stasis Leak is used in a send/return effects loop.

Tap/Sync In
These functions only apply to the delay effect, where they may be used to set the delay time, either manually, or via an incoming clock.

Left Out/Right Out
These two outputs may be used in conjuction for full stereo outputs of the chorus and reverb effects. The delay effect is mono, and either of the outputs may be used. For best results when using the chorus in a mono signal path, the left and right signals, which are 90o out of phase with each other, should be combined using a small mixer such and Process 26 or Volts Platz.

Depth: 35mm
12V draw: 96mA
Width: 6HP
-12V draw: 14mA
5V draw: 0mA
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MRP:$230.90 SAVE 31%
 1 in stock $159.20
Frequency Central State 700 Mk2 Filter Module
Cat: 732134 Rel: 15 May 19
 
Updated version of the State 700 module - 10HP
Notes: State 700 Mk2 is an update of this popular module. The Mk2 is the same size as the Mk1, at 10HP wide, but features additional audio and CV inputs, both with their own attenuators. Based on the Roland System 700 state variable filter module, State 700 provides lowpass, bandpass and highpass outputs simultaneously. The Mk2 features upgraded outputs from the original module, keeping signals more in line with Eurorack output levels. A big part of the sound of the State 700 is the way in which resonance is reduced as the audio inputs are driven harder. It won't self oscillate with a hot audio input, throttle back a little and you'll get squelchy ear bleeding resonances!
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Frequency Central System X Envelope Module
Cat: 614138 Rel: 16 Jun 16
 
Eurorack envelope synth module based on Roland System 100M envelope - 4HP wide
Notes: The second module in the Roland System 100M clone series, the System X Envelope on 4HP. Includes the addition of a range switch for fast/slow response. Even snappier than a crocodile sandwich.

For audio demo, please visit - http://www.frequencycentral.co.uk/wp-content/uploads/2012/11/MoroderClarke.mp3
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MRP:$137.44 SAVE 23%
 1 in stock $106.50
Frequency Central Tempograf Tap Tempo Clock Module
Cat: 814805 Rel: 25 Feb 21
 
Clock generator eurorack module
Notes: Tap Tempo clock module with Start/Stop and division functions

Tempograf is a small 4HP clocking module derived from Frequency Central's popular Chronograf module. It takes some of the key features of Chronograf and presents them in a small form, but strips out some of the more advanced features. The result is a handy little master clock module which can be used as a controller for our range of sequencing modules such as Polygraf, Little Melody and High Towers (as well as some forthcoming modules).

Tempograf can be started by using the Start button (indicated by a triangle), or by double tapping the Tap button, in which case Tempograf will run at the tempo of your taps. Tempgraf can be stopped by pressing the Stop button (indicated by a square). The Tempo knob sets the master tempo, which ca be over-ridden by teh Tap feature.

Tempograf has 2 identical Clock outputs, useful for spreading clocks to multiple destinations. Additionally, there is a Div. output, which sends out divisions of the master clock /1, /2, /4, /8, /16, /32, /64, /128, together with the associated Division knob. Div. out can also be used as a reset for devices which require reset on start, usually by setting the Division knob to /128. Tempograf's Reset output sends out a reset pulse whenever Stop is pressed.

Product Specifications:

Depth: 35mm

Width: 4HP

12V draw: 10mA

-12V draw: 7mA

5V draw: 0mA
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Frequency Central Turn! Turn! Fixed Voltage Sources Module
Cat: 800470 Rel: 13 Nov 20
 
Fixed voltage sources module
Notes: Fixed voltage source with BIG KNOBS and multiple voltage ranges.

Fixed voltage sources are not a new idea in modular, but we hope that Turn! Turn! brings a new twist to the concept. Turn! Turn! features two independent fixed voltage sources with a useful range of features.

Turn! Turn! grew out of a conversation with Steve Levine - when a producer of such note makes a suggestion you have to listen - and act on it. Steve suggested that it would be useful to have a fixed voltage source under the control of a big knob, and the ability to go from as little as 1V over the entire range of the knob. Hence subtle, incremental changes are possible.

The final feature set includes a voltage selection switch as well as a unipolar/bipolar switch. Both normal and inverted outputs are included. The following ranges are available from Turn! Turn! depending on switch positions:
0V to 1V
0V to 2.5V
0V to 5V
-1V to 1V
-2.5V to 2.5V
-5V to 5V

Depth: 29mm

Width: 8HP

12V draw: 9mA

-12V draw: 9mA

5V draw: 0mA
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Frequency Central Wave Runner LFO Module
Cat: 614155 Rel: 16 Jun 16
 
Eurorack multi-waveform syncable Low Frequency Oscillator (LFO) module based on Electric Druid TAPLFO2D family of code - 4HP wide
Notes: Wave Runner LFO:
Wave Runner is a multi-waveform sync-able LFO based on the Electric Druid TAPLFO2D family of code, but with some significant additions and improvements. The TAPLFO2D-FC PIC and code is exclusive to Frequency Central and was developed specifically for the Wave Runner, and is not compatible with similar modules.

8 waveforms:
- sawtooth
- ramp
- pulse
- triangle
- sine
- noise
- sample and hold
- stepped triangle/sawtooth/ramp

All waveforms can be skewed using the Distort knob, as well as control over pulse width of square, and distortion of the cyclic waveforms, this get you control over Noise freq as well as bitcrushing, bitcrush of S/H down to 1 bit for random triggers.

Tap sync input, for syncing to whatever. Wave Runner measures the last two incoming pulses and syncs itself to these. Multiply knob allows for Wave Runner to run at x0.5, x1, x1.5, x2, x3 and x4 of the incoming sync pulse. Freq is from stupid slow (0.025Hz) into low audio range (50Hz).

The latest version also features Level CV input to control the absolute output level of the LFO.
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MRP:$181.42 SAVE 29%
 3 in stock $128.27
Frequency Central Wave Runner LFO Module (B-STOCK)
Cat: 798872 Rel: 16 Jun 16
 
B-STOCK: Box opened, product in perfect working order
Notes: ***B-STOCK: Box opened, product in perfect working order***


Wave Runner LFO:
Wave Runner is a multi-waveform sync-able LFO based on the Electric Druid TAPLFO2D family of code, but with some significant additions and improvements. The TAPLFO2D-FC PIC and code is exclusive to Frequency Central and was developed specifically for the Wave Runner, and is not compatible with similar modules.

8 waveforms:
- sawtooth
- ramp
- pulse
- triangle
- sine
- noise
- sample and hold
- stepped triangle/sawtooth/ramp

All waveforms can be skewed using the Distort knob, as well as control over pulse width of square, and distortion of the cyclic waveforms, this get you control over Noise freq as well as bitcrushing, bitcrush of S/H down to 1 bit for random triggers.

Tap sync input, for syncing to whatever. Wave Runner measures the last two incoming pulses and syncs itself to these. Multiply knob allows for Wave Runner to run at x0.5, x1, x1.5, x2, x3 and x4 of the incoming sync pulse. Freq is from stupid slow (0.025Hz) into low audio range (50Hz).

The latest version also features Level CV input to control the absolute output level of the LFO.
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 1 in stock $121.11
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