Doepfer DIY Synthesizer Kit without Tempco

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The Doepfer DIY Synthesizer Kit without Tempco is an ideal kit for not so experienced DIY users - a lot of people like to solder this without the temperature compensation components, this way their synth will be more of an experimental nature.
98,40 EUR 82,00 EUR

Elérhetőség: Nincs raktáron

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DODIYnoT

The Doepfer DIY Synthesizer Kit without Tempco is an ideal kit for not so experienced DIY users - a lot of people like to solder this without the temperature compensation components, this way their synth will be more of an experimental nature.


Important note: The DIY Synth kit is planned for experienced users only who are familiar with both electronics and analog synthesizers. It is definitely unsuitable for beginners ! For example we will not be able to offer the service to repair a customers assembly if it does not work as it should, or to make individual suggestions how to wire the board for special applications. We have to emphasize this fact very clearly in advance to avoid unsatisfied customers who will have problems getting their synth to run. Of course we will publish a detailed list that explains the function of each pin and a suggestion how to use this pin.The DIY synth is the beginning of a a new product line: a low cost DIY kit to build a full-fledged analog synthesizer. The kit is made of an assembled and tested pc board that includes all that is necessary to build a standard analog synthesizer: 

VCO:

  • Sawtooth output
  • Rectangle output (with variable pulse width)
  • Four frequency CV inputs (1V/octave with tempco option)
  • Frequency CV summing input (can be used to increase the number of CV inputs if more than four frequency CV inputs are required)
  • Two PW/PWM CV inputs
  • PW CV summing input (can be used to increase the number of CV inputs if more than two PW CV inputs are required)
  • Linear FM input
  • Hard sync input

VCF:

  • Multimode filter
  • lowpass, highpass and bandpass output (optional low-notch-highpass with external potentiometer)
  • 12dB/oct
  • Two frequency CV inputs (one roughly 1V/octave, one roughly 0.5V/octave)
  • Frequency CV summing input (can be used to increase the number of CV inputs if more than two frequency CV inputs are required)
  • Audio input
  • Audio summing input (can be used if more than one audio input is required)
  • Overdrive/distortion possible
  • Manual resonance control
  • Resonance up to self oscillation

VCA:

  • Exponential control scale
  • One CV input
  • CV summing input (can be used  if more than one CV input is required)
  • Two audio inputs
  • Audio summing input (can be used if more than two audio inputs are required)
  • Overdrive/distortion possible
  • Audio output

ADSR:

  • Connection for attack, decay, sustain and release controls
  • Connection for range switch (3 ranges)
  • Connection for LED display  
  • Gate Input
  • ADSR output

LFO:

  • Connection for frequency control
  • Connection for range switch (3 ranges)
  • Connection for LED display
  • Triangle and rectangle outputs

Slew Limiter:

  • Connection for slew control
  • Input
  • Output

Inverter

  • Input  
  • Summing input (can be used to increase the number of inputs, e.g. to built an inverting mixer)
  • Output  

Remark: The summing inputs (VCO frequency CV sum, VCO PW CV sum, VCF frequency CV sum, VCF audio sum, VCA CV sum, VCA audio sum) can be used to increase the number of CV or audio inputs if the available number of inputs is not sufficient. The additional inputs have to be connected to the sum input in question via serial resistors. The value of the resistor in question defines the sensitivity of the corresponding CV or audio input. Additionally required resistors are not included with the kit !

DIY Synth pc board with tempco option
measures: ~ 201 length x 38 width x 20 height, measures in mm
 The kit is planned for customers who are familiar with electronic basics as the kit does not include the controls, switches, sockets, power supply and the case. These elements have to be added and wired by the customer. The board is equipped with dual row pin headers. This enables the usage of dual row female connectors instead of soldering the controls directly to the pins. The customer can choose the desired size, shape, type and color of these elements (e.g. rotary potentiometers or faders, small 3.5 mm jack sockets or ¼" sockets or banana type,  small or large knobs and switches and so on). Even the type of wiring is free: the range goes from a pre-wired standard synth (VCO-VCF-VCA type) up to a fully patchable modular system. Two or more of the kits can be combined to obtain more VCOs, ADSRs, LFOs, VCAs or VCFs, e.g. to built a more complex pre-wired or modular synth. We also think about a DIY expansion board that may contain a noise generator, S&H, ring modulator, mixer, maybe Midi/USB interface and multi-effect unit, and other often used synthesizer units. A stabilized symmetrical 12V power supply (i.e. -12V, GND, +12V)  with at least 150 mA current is required.The additional working time and required skills to build a working unit from the kit should not be underrated !  One should count at least on one weekend, even if you are an experienced hobbyist. To obtain all features about 25 potentiometers, 20 sockets and several switches have to be mounted into a suitable housing and wired faultless. We ask for your understanding that we cannot offer the service to troubleshoot a customer’s assembly. The pc boards comes assembled and tested. Only the adjustment of the 1V/octave scale and the frequency offset of the VCO have to be carried out by the customer.We do not offer complete units but only the assembled and tested pc board ! The pictures show application examples for the DIY synth board. Assemblies like these are not available from us !We also do not offer kits with unassembled pc boards (i.e. kits that include the electronic parts and the unassembled pc board and the customer has to assemble and solder the parts). We made some bad experiences in the past with such kits. Some customers were very angry when they had to pay for the repair of a non-working assembly and the total charges were higher than the ready assembled and tested unit (sometimes we even had to refuse the repair of totally improperly assembled boards because the estimated repair charges exceeded the price of a the assembled and tested pc board). That's why we will definitely no more offer such kits !

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