Frap Tools

SAPEL (Tamed Random Source)

€519,00 incl. VAT
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    DescriptionSAPEL (Tamed Random Source)

    SAPÈL

    Tamed Random Source

    sapèl / saˈpɛːl / s.m. [dialect from the northern area of Modena – Italy, uncertain etymology: probably from vulgar Latin sappa, ‘hoe’, meaning ‘roughly hoed’] – ‘mess’, ‘muddle’, ‘chaos’.

    Its main section is composed of two identical clusters of four Sample and Hold circuits each (yellow and green), generating as many different random values simultaneously.

    Three of the four S&H circuits in each cluster provide stepped random voltages: two are quantized (in “notes”), and one is unquantized; the last S&H circuit features an integrator to generate a fluctuating stream of random voltages.

    The three stepped voltage generators are synced, which means they will output three different values simultaneously. The yellow and green generators have two independent internal clocks, which can be replaced with an external one, or temporarily overridden via an external signal or the manual button.

    Regardless of the clock used, each S&H cluster features two clock outputs: one that mirrors the input clock and another that provides a random clock behavior.

    On the other hand, the fluctuating voltage generator is independent and has its own potentiometer to define its rate.

    Each of the two S&H clusters samples its values from analog noise, thus providing a “true” and completely unpredictable randomness.

    The second section of SAPÈL features four analog noise outputs derived from the analog noise used to sample random values.

    Size

    18 HP

    Depth

     

    38 mm

     

    Current draw

    270 mA @ +12 V

     

     

    170 mA @ -12 V

    Recommended warmup time

    30 min

    CV input impedance

    >90 KΩ

    Clock input impedance

     

    >90 KΩ (on positive pulses)

     

    ~30 KΩ (clamping negative pulses)

     

    Built-in clock frequency (1)

     

    ~0.1–60 Hz

     

    Quantized Random Voltages tolerance

     

    <1 %

     

    +/-10 mV

     

    Clock output (period)

     

    ~2 ms

     

    Clock output (amplitude)

    ~9 V

     

    Sampling glitch

    >400 ms

     

    Blue noise output level

    10 dBU RMS

     

    White noise output level

     

    10 dBU RMS

     

    Pink noise output level

     

    7 dBU RMS

     

    Red noise output level

     

    4 dBU RMS

     

    Noise output global tolerance

     

    +/-2 dB

     

    (1) Lower frequencies (i.e., slower clocks) may be achieved with a negative CV used as modulation.

     

    Manual you can find here: MANUAL

     

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