Nonlinearcircuits Null-A will be at Superbooth 17, Booth E273. The booth was booked by Gareth of Oscillosaurus, who kindly offered to share the space to help promote other Australian Eurorack manufacturers.
btw - cellF will be performing in Berlin on May 12, 13 at HKW
![nonlinearcircuits](http://3.bp.blogspot.com/-2tGDqzPAtas/URtRBo73f6I/AAAAAAAAAKg/fly3uSO2kD4/s150/xyman4.gif)
nonlinearcircuits -
ANALOGUE modular synthesizers
(no midi, no software, no microprocessors)
PCBs and Modules LIST
Saturday 11 March 2017
Friday 10 March 2017
NULL-A................2
Null-A2
is an all-in-one analogue synth packed into 42HP.
PCB set (2) - USD50
White Panel - USD50
Black Panel - USD60
'B-stock' PCB or aluminium panels - USD40
Shipping for these will be USD20 (includes tracking & signed delivery)
assembled - USD550.
Black Panel - USD60
'B-stock' PCB or aluminium panels - USD40
Shipping for these will be USD20 (includes tracking & signed delivery)
assembled - USD550.
It features:
2 VCOs
1 state variable
VCF
1 ladder VCF
1 VC Delay
3 VCAs
2 LFOs
Mixer
Headphone amp
Sequencer
Clock Divider
Sample & Hold
(S&H)
Sloth chaos
generator
It does not feature MIDI, micro-processors or
any software.
Current draw:
+12V rail - 135mA
-12V rail - 90mA
Current draw:
+12V rail - 135mA
-12V rail - 90mA
There are several
presets that run between the switches of the jacks. If you insert a patch-cable
into either jack the preset is disconnected.
The interesting
one is the signals from the Sequencer, Sloth chaos and Tri from LFO2 are mixed
and fed to the S&H sample input. This means it is continually generating
stepped and smooth CVs (for there is a Slew pot) that are different but related
to everything else that is going on.
The Clock Divider
gives divisions of /2, /8, /32 and /128.
The Sequencer has
4 stages but the direction control can be used to make it count forwards and
backwards enabling more complex sequences. In normal operation, the ‘x’ output
gives the CV generated by the stages 1 thru to 4, meanwhile the ‘y’ output will
give a CV signal generated by stages 4 thru to 1.
The VC Delay can
be used to generate reverb type sounds but can also be pushed into making all
sorts of unexpected zipper noises and effects when the Time and Feedback pots
are turn high.
The third VCA is
built into the input of the Ladder VCF. If nothing is patched into the ‘CV VCA’
input, the VCA is always on.
The Sloth Chaos
is a very slow CV generator, it can be used to liven up a patch and create
slowly evolving sounds. It cannot be controlled, it does what it wants.
I have a batch of aluminium panels that have minor scratches or scuff marks on them, usually just a couple and not particularly bad, so these are available for USD40 until sold out. Please specify 'B-stock panel' when ordering.
I have a batch of aluminium panels that have minor scratches or scuff marks on them, usually just a couple and not particularly bad, so these are available for USD40 until sold out. Please specify 'B-stock panel' when ordering.
Envelope Follower
This Envelope Follower PCB was developed for use in the cellF synth, it is based on the design in the Buchla Easel. Obviously it has a few changes; a gain pot rather than a hi/lo switch and a gate output. It is a wonderfully sensitive and expressive EF, that works nicely with regular microphones and guitars.
The 1/4" jack connects to the switch of the 3.5mm input jack, the outputs are pre-amp (20x gain), envelope and gate. The LED indicates when the gate is on.
PCB - USD8
Panels - USD20
assembled - USD100
The 1/4" jack connects to the switch of the 3.5mm input jack, the outputs are pre-amp (20x gain), envelope and gate. The LED indicates when the gate is on.
PCB - USD8
Panels - USD20
assembled - USD100
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