Vongon Paragraphs Resonant Low Pass Filter

The crew at Vongon has always release wildly innovative musical effects units, like the Ultrasheer Pitch Vibrato & Reverb and the Polyphrase Stereo Echo. Today, we’ve got another marvelous creation from these sonic wizards: the Paragraphs Resonant Low Pass Filter. This is a low pass filter the likes of which you’ve never seen, or heard, and we’re gonna do our best to explain this crazy machine to you all…

PARAGRAPHS is an analog four-pole resonant low pass filter with an attack, decay (AD) envelope generator designed with focus on simplicity and flexibility. The heart of the LOW PASS FILTER circuit is the AS3320 analog chip — a modern replica of the same component used in analog classics like the Sequential Prophet 5, Pro-One mono-synth, Elka Synthex, and the LinnDrum. Cutoff spans the full audio spectrum and resonance starts to self-oscillate at about seventy percent.

The ENVELOPE GENERATOR offers modulations in an uncommonly wide range of frequencies — starting as low as 0.05 hz for slowly evolving 20 second long cycles, and reaching up to (and past) the audio threshold at 300 hz for a wave shaping effect similar to sounds found on west coast style synthesizers (“think Buchla”). Paragraphs accepts instrument and line level signals. Dedicated controls for input (drive) and output level make it easy to move between a crystal clear clean tone and and a clipping fuzz. A multi-color LED provides a visual representation of the signal level: Red indicates clipping, Orange flashes indicate the start of overload, and Green indicates the presence of signal at or below the nominal level.

Inputs for CONTROL VOLTAGE and MIDI are available to remotely trigger the envelope generator. This enables your Paragraphs to stay in rhythmic synchronization with external systems like midi sequencers, euroracks, and digital audio workstations.

-1/4” mono input/output jacks
-2.1mm DC Connector
-5.7” x 4.7” x 1.5” enclosure dimensions
-true bypass
-input impedance: 1MΩ
-output impedance: <1kΩ -power supply: 9 to 9.6 VDC center negative -current draw: 100mA max

For our demo video below, we enlisted the help of a Korg SQ-1 Step Sequencer, which runs into the Paragraphs by way of Control Voltage. This lets us manipulate the signal in real time, without having to stop and play more notes, so the focus is all on what this amazing low pass filter can do. Please be sure to head to YouTube to like, comment and subscribe to our channel, and have a great weekend!!

Affiliate Links:
Sweetwater – https://sweetwater.sjv.io/MX05KP
Vintage King – https://vintagekingaudio.sjv.io/nLGZd7
StewMac – https://stewmac.sjv.io/P0X7BQ
Amazon – https://amzn.to/3FN04Mq