STO
Limited WARRANTY: Make Noise warrants this product to be free of defects in materials or construction for a period of one year from the date of SXUFKDVH SURRI RI SXUFKDVH LQYRLFH UHTXLUHG . Malfunction resulting from wrong power supply voltages, backwards power cable connection, abuse of the product or any other causes determined by Make Noise to be the fault of the user are not covered by this warranty, and normal service rates will apply.
Installation: The Make Noise STO is an electronic signal generator requiring 30mA of +12V and 30ma of -12V regulated power and properly formatted distribution receptacle to operate. It is designed to be used within the euro format modular synthesizer system. Go to http://www.doepfer.de/a100_man/a100t_e.htm for the details of this format.
Overview: The STO is a compact Voltage Controlled Oscillator designed for generating SINE waves, Variable wave-Shapes, Sub-Octaves, Oscillator SYNC and Linear FM in the analog domain. The Sub-Timbral Oscillator is the more subtle and melodic friend to the DPO's complex harmonic lattice. The STO will yield harmonically rich textures through the use of Hard Sync, Linear FM and Variable Shape, but this VCO seems destined for melody. The STO uses a Triangle Core and has outputs for SINE, SUB and Variable Shape.
1 2 3 4 5 6 7 8 14 9 10 11 12 13 STO Panel Controls 1. 2. 3. 4. 5. 6. 7. 8. 9. Variable Shape Waveform OUT: 10Vpp Sub-Oscillator OUT: 12Vpp Sine Waveform OUT: 10Vpp Coarse Tune panel control: 9 octave range 8hz-4khz 1V/ Octave Scale Trimmer (see calibration procedure) Fine Tune panel control: +/-2.5 semi-tone range Linear FM Level: uni-polar attenuator for Linear FM input Linear FM INput: AC coupled, 10V range Variable SHAPE: Ripples Even and Odd harmonics.
The WAVEFORM OUTPUTS There are three wave shapes that are derived from the oscillator core. These signals are all roughly 10V peak to peak and centered around 0V (bi-polar). The SINE wave is derived from the TRIANGLE core of the oscillator and is provided as an output because it is great for blending with signals of greater harmonic content in order to strengthen the fundamental.
FM, SYNC and Variable SHAPE: The STO is capable of generating harmonically rich waveforms. This is accomplished through the modulation of the Variable SHAPE, FM and Oscillator SYNC. Linear and EXPO FM Frequency Modulation super-imposes the frequency of one oscillator upon another. The result is that the oscillator that is FM'd will carry the modulating oscillator's pitch information in the form of harmonics.
Patch Ideas: The Sub Timbral Voice: Patch Variable SHAPE output to AC input of MMG. Patch Sub-Osc output to DC input of MMG. Set STO Freq to around Noon. Set MMG input attenuator to 60%, MMG Freq to 0%, MMG Q to 40% and Mode to LP. Patch slow LFO logarithmic from MATHS to SHAPE CV IN on STO and set SHAPE attenuator to about 60%. Patch sequencer or keyboard CV to 1V/ Octave input on STO.
1 2 3 4 5 Calibrating the STO Requires small flat head screw driver or trimmer tool, tuned reference signal, oscilloscope. NOTE: if you plan to use the STO with another VCO or Synth in your system (even another STO or Make Noise DPO), it is a good idea to use that VCO/Synth for your reference signal, assuming it is calibrated to your satisfaction. The same is true of the quantizer or MIDI to CV interface. Use the unit within your system.
1 2 3 4 6 STO SINE Shape and Amplitude Trims for SINE shape (1) and Amplitude (3) are accessed through the top side of the module. Take care in lifting the top half of the module out of case for calibration. 1.Monitor the SINE (3) from the VCO to be calibrated. If possible view the signal on an oscilloscope and/ or spectrum analyzer as well. 2. Set VCO to be calibrated near to frequency of C4 (4). 3. Set oscilloscope for 2V/ div. by 2ms/ div. (skip to step 4. if no oscilloscope will be used). 4.