The kits come
assembled, tested and ready to install. I do not offer
spare PCBs only for these.
All modifications are at your own risk and I assume no
liability for personal injury or damage to equipment
or loss of use caused directly or indirectly by the
use of any of
the kits. Although the installation is quite
simple it
should only be performed by those experienced in
electronics.
Sustained/transient
external gate push-pull pot
Transforms any external gate signal into a short
trigger.
When pushed, the envelope behaves as normal.
When pulled, the "on" time depends on the knob
setting only and is not related to how long you
press your keyboard key, very useful for snappy
envelopes.
Works with both keyboard Jones socket and jack
(if installed) gate inputs
Mounted in place of the "on" pot.
A LED fills the former anti-rotation hole and
shows the mod is active.
Comes with detailed installation schedule for
the kit and for the optional jack gate input
mod.
90
euros including worldwide shipping.
Installation
into a Synthi A needs to temporarily remove the
reverb tank
I play the KS in normal
position, you can see the notes length depends
on howlong I keep my finger on the key, then I
pull the knob and the notes length is
independent and fixed. Second part is the same with a sequence.
Trapezoid
polarity push-pull pot
Controls the trapezoid output polarity.
When pushed, the trapezoid behaves as normal.
When pulled, the trapezoid polarity is inverted.
Mounted in place of the "trapezoid" pot.
A LED fills the former anti-rotation hole and
shows the mod is active.
Comes with detailed installation schedule for
the kit.
90
euros including worldwide shipping.
Inverter
pins PCB
2 pins are wired to an inverter circuit and can
be used to invert the signal polarity.
Comes with detailed installation schedule for
the kit and grey shielded cable for the pins.
50 euros including worldwide shipping and
shielded cable (pins are not included). Installation
needs to slightly enlarge 2 pin shaft holes of
the pin park for the cable
First with the trapezoid
polarity control push-pull, then with a normal
pin and the inverter pin. Trapezoid controls osc 1 frequency and is
patched to scope out. I don't change the pin patched to the scope
out, so you can see that with the push-pull the
signal is inverted before to be patched and with
the inverter pin it's inverted when it's
patched, you can patch the inverted signal to a
destination and the normal signal to another
destination at the same time.
Simple Random
Voltage Generator / Sample & Hold
It uses 2
push-pulls on both noise pots. As long as
the mod is not enabled by pulling the
push-pull pot, the Synthi works exactly as
unmodified.
The kit costs 180
euros and includes
- populated and tested ready-to-install PCB
mounted to the 2 push-pull pots
- clear and detailed installation
instructions for both possible RVG and
S&H wiring
- cables and cable ties for the connections
- worldwide registered shipping
