Useful Tips

Here at Analogue Systems our aim is to provide you the musician/sound designer with a comprehensive range of modules to create a complete and versatile electronic music instrument capable of not only creating classic subtractive analogue tones but exploring Additive and Wavetable synthesis as well. Our systems can be controlled by conventional CV/gate keyboards and sequencers, or by midi with midi/CV converters, monophonically (RS140) or polyphonically (RS370) and even control MIDI equipped devices with CV/midi converter (rs300) Not only that but with the RS35 external processor you can control the synthesizer with .voice, guitar flute etc. With a range of effects covering comb filters reverb modules and analogue delay using BBD chips, to sampling and digital delays with CV control we have it covered.

Fancy having an EMS KS sequencer type module but with vastly superior recording time and memories, perhaps the simplicity of the old step time sequencers in synths of the past ala Roland SH101. Well the RS450 CV recorder can provide you with both these options plus endless musical opportunities.

Over time this page will be updated to contain useful information and tips to get the best out of your Analogue Systems purchase and will address individual modules rather than complete patching tips which are more than covered in the excellent 63 part Synth Secrets written by Gordon Reid and published in Sound on Sound

RS20 Ring mod 
Because a ring mod can be used as a VCA it is important that there is no bleed through of signals. To try this out simply patch a square wave output of an LFO into one input and an audio waveform from a VCO into the other. Then patch the RS20 output to an attenuator (signal mixer etc) and on to your mixing desk or sound reinforcement system. As you reduce the frequency of the LFO there will be silence then the sound of the waveform then silence again determined by the frequency pot. You should hear no bleed through of the VCO waveform no matter how faint 
A simple but effective use of the above requires the output voltage of Row A of the RS200 sequencer into the X input of the RS20. Now patch noise into the Y input of the RS20, then patch the output of the RS20 to a signal mixer like the RS165 to attenuate the signal then on to your mixing desk. Now start the RS200 sequencer and you will hear a crude hi hat effect with is dynamic due to settings of the knobs on Row A of the RS200 sequencer so they can be loud or soft. 
How to multiply a clock using the RS20 ring modulator, Patch square wave output of rs85 LFO to a multiple. Patch from multiple to gate input of RS60 envelope generator. Patch from same multiple to both X and Y inputs of RS20 then from its output to a second RS60 gate input. 
You will now note the second RS60 being triggered from the RS20 ring mod is firing at twice the speed of the first as can be seen by the red LED's 

RS60 Envelope generator 
Creating DC level shifter if you do not have the RS50 or similar. 
Patch one of the outputs of an RS60 envelope generator to the CV input of the device you want to apply the offset to. 
Put the switches in hold and std position and output level at maximum. By adjusting the sustain knob of the envelope generator, the static voltage coming out of the output level sockets A or B (or both) becomes a DC level shifter. No input to the gate or trigger inputs are required and attack decay and release knobs set to zero or fully anti clockwise. 
To create faster transients of the RS60 patch one of its unused outputs back into itself via the CV-in dec+rel socket By patching a CV mixer in between the above you can have more control of the envelopes response.

RS110 Multimode Filter
When for example you are using the low pass output of the filter, take a short patch cord and patch out of the Notch Out socket into the Res In socket. This will change the tone of the signal you are monitoring.
Experimenting with other combinations may cause interesting tonal changes or can create feedback that can briefly shut down the operation of the module so placing a signal mixer like the RS165 can help attenuate the level entering the Res In socket

If you need a simple vibrato effect and you have no dedicated LFO to hand then this is a simple way to create it If you apply a negative D.C. offset at the CV-in 1v/oct socket so that you are taking the cut off frequency past its physical anti clockwise position on its pot and patch say the low pass output to the CV input of a VCO, now (with no signal present at either sig 1 or sig 2 inputs of the rs110) as you increase the resonance pot clockwise the sine wave created once the filter is resonating can go down into modulation territory courtesy of the D.C. offset applied to the CV-in 1v/oct that affects the frequency pot.
You will have created an lfo sine wave the speed of which is controlled by the amount of D.C. offset