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Introduction

Portal Drum is an ultra-powerful sound designer for creating tuned-drum sounds.  Portal Drum is
particularly well suited to create kick drums but it will also create many great sounding toms,
percussion instruments, and synth/bass lines.  With Portal Drum, we wanted to make a new canonical
drum sound with subtle nostalgia.  Through this portal you will undoubtedly discover new territories!

Portal Drum utilises an underlying philosophy that we feel an instrument should sound right with
minimal or even no additional processing.  You will immediately find Portal Drum fits much better in a
mix without compression, post-EQ, layering, resampling, etc.  This keeps the music making process
honest, direct, and away from the tedium of turning something into something it is inherently not.

Portal Drum features a total of 3 painstakingly designed envelopes to drive pitch sweep (FM),
TRANSIENT, and AMP DECAY.  These novel envelopes are a big part of Portal Drum’s characteristic
sound and not found in any other drum synthesizer.

The Portal fold circuit adds focused and more interesting nonlinearities from subtle warmth and
saturation to near-extraterrestrial reaches that cut a tunnel through the spectra.

The equalisation section of Portal Drum contains a HPF for keeping your tunes lite while the GAP
FILTER drastically contours and pushes frequency content to the edges providing a huge array of
drum tones.

The Portal Drum is the first instrument of ours to feature the DynaControl system.  This gives the
user a way to macroise a particular drum design and be able to play it easily and musically with
minimal external patching.  In fact, only one wire is needed to control the hit and up to 6 parameters
which gives the user a realistic ‘how hard’  input as found on a real drum.

Portal Drum is capable of a ton of different drum sounds - everything from minimal ‘pillow kicks’ and
toms to esoteric perc sounds, rimshots, woodblocks, claves, and ticks n clicks.  Just listen and twiddle
and you will find your own special spots.

Features

PORTAL and SATURATION wave distortion modes (CVable)

PITCH modulation with custom envelopes provide fully adjustable FM sweeps (CVable)

Selectable pitch envelope shapes: ‘Rabid Elephant’ and ‘Classic’

AMP DECAY for adjusting the duration of the kick (CVable)

TRANSIENT generator for adding all sorts of colours of cliks, tiks, cluks, etc. (CVable)

HPF gives other bass frequencies room and controls liteness

Powerful EQ sculpting with the Gap Filter (CVable)

MEOW displaces the bloom of harmonic energy instead of placing it all up front

Three meticulously crafted custom envelopes for FM, AMP, and TRANSIENT

DynaControl system for applying musical dynamics to any or all CVable parameters with just a
single input - with one cable it is possible to expressively run the entire drum

Six switchable analogue high speed S&H circuits on all CV inputs

Summary of Contents for Portal Drum

Page 1: ...v1 0 0 PORTAL DRUM USER S MANUAL...

Page 2: ...ours and pushes frequency content to the edges providing a huge array of drum tones The Portal Drum is the first instrument of ours to feature the DynaControl system This gives the user a way to macro...

Page 3: ...we do out of love and the hopes that people create and spread their own liteness with the world You are a patron to this cause and to us Thank You Yoni While we ve only met just a short time ago we h...

Page 4: ...ds 1V This jack also has a little trick when you leave the DynaControl input unplugged Because we have S H circuits and attenuverters on every input you can create a single cable HIT dynamics input if...

Page 5: ...entation too 4 AMP DECAY CV Input Jack This input allows for external voltage control over the AMP DECAY time It is summed with the AMP DECAY knob setting 5 DRIVE CV Input Jack CV control over the dri...

Page 6: ...one of the unipolar options centre or right switch position and turn the knob fully CCW There is a panel hint to tell which attenuverter corresponds to which parameter If the attenuverter has a small...

Page 7: ...on clipping Offset control 20 AMP DECAY Knob Outer This adjusts the decay time of the drum s amplitude Offset control 21 PILLOW PUNCH Switch This switch chooses the type of drum pillow or punch In Pun...

Page 8: ...or canyon in the mid frequencies SPAN is how wide the gap is The more Span the more mids are cut out of the signal s spectrum We have added a very slight amount of overlap at the minimum settings of S...

Page 9: ...h this macro is applied to each target parameter Take a kick drum for example It it operated only by a foot The only variable other than the rhythm the human gets to choose is force But force doesn t...

Page 10: ...understand the role of your drum in context When creating Portal Drum we always placed the kick sounds in a particular song Be very careful with any heft bias where the cool super powerful sounding k...

Page 11: ...unlinked which can give useful filter overlaps for not only cutting frequencies but also boosting some You may want to keep this in mind as you move the controls around If you move the LPF cutoff fre...

Page 12: ...o IO safety and damage See our Warranty section for responsibilities Patch carefully Any specifications are subject to change without notice Calibration Warranty and Repair Calibration Rabid Elephant...

Page 13: ...our products do not end up in a landfill We will not in discretionarily discard replace the instrument or subassemblies of the module If your instrument is damaged please contact us at support rabide...

Page 14: ...is is constant that multiplies the signal In other words it scales the incoming signal by some constant Gain values less than 1 attenuate or shrink the signal in the up and down dimension Gains above...

Page 15: ...n of the following parameters HIT Button In Meow Amount CV In 1V oct In FM Decay CV In Transient Amount CV In Transient Tone CV In HPF 1V oct In GAP Position CV In Direct Sin VCO Out Direct Tri VCO Ou...

Page 16: ...v1 0 0 Spread your creativity kindness and vibe with the world With love Rabid Elephant...

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