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Delptronics ThunderBell Analog Cowbell

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    Description
    The Delptronics ThunderBell is a classic analog cowbell sound. The circuit is inspired by the great cowbell sound in the Korg KR-55. Like the KR-55, the TR-808, and most other analog drum machines, we model a cowbell by using two tuned square waves. We also include some pseudo-ring-modulation, as did the KR-55.

    Tunable

    In the old drum machines, the cowbell was not tunable. Newer cowbell modules give you knobs to tune the two square waves. However, if the two frequencies are not in the correct relationship to one another, then it does not sound like a bell at all. The Delptronics ThunderBell keeps the two waves in the proper relationship across a wide freqency range. So, it is a truly tunable cowbell. There is also some room at the lower end where the sound gets weird and fun, if not bell-like. The ThunderBell also gives you broad control of the decay, so you can create short "tinks" or long "dings".

    Voltage Controllable

    The ThunderBell Eurorack Module gives you voltage control of both the pitch and decay. The CV inputs are 0 to 5V and cover the whole range of the module's sounds, it is not 1V/octave. We also include a trigger button so you can throw a bell into your mix whenever the mood strikes you.

    The ThunderBell in a Cowbell (or mini kit) has an analog gate input and pitch voltage control input. Both pitch and decay are controllable with knobs, and of course there is a trigger button.

    The Kits

    The ThunderBell kit comes in two versions: Module and Mini. The Mini circuit board is used in our ThunderBell in a cowbell. The table below details the differences between the two kits. The main difference is that the Module kit includes extra parts to amplify the output up to synth levels and for voltage controlled decay.
    Images
    Architecture
    Type: Analog
    Synthesis: Oscillator(s)
    Oscillators
    Oscillators: 2
    Waveforms: Square
    Osc Modulation: Envelope, Input, Knob, Ring Modulation
    Envelopes
    Envelopes: 1
    Evelope Paramerters: Attack, Decay
    Polyphony & Tuning
    Polyphony: 1
    Timbrality: 1
    Tuning: Standard
    Modes: Mono
    Case
    Case: Desktop
    Controls: Buttons, Knobs, Mod - Wheel 2, Modulation 1/4" Jacks
    Dimensions (WxDxH): 3.1 x 2.3 x 3.7 inches
    Connections
    Audio Output Connections: 1/4" Phone Jack, Mono Out
    CV Ports: CV IN, Trigger In
    Power: 9V battery
    Production
    Year Released: 2015
    Manuals & Documents

    Product Links
    Company Product Sites:
    [+] delptronics.com
    Pricing
    MSRP List Price: $50 kit, $77 built, $107 built+speaker - convert
    Shopping
    YouTube Videos
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