MATRIXSYNTH: FOUR SEAS // A Multi-Voice Mega Wavetable Oscillator Powerhouse from Ferry Island Modular


Thursday, October 23, 2025

FOUR SEAS // A Multi-Voice Mega Wavetable Oscillator Powerhouse from Ferry Island Modular


video upload by DivKid

"Here we have Ferry Island Modular's first release 'Four Seas', which is designed, engineered and manufactured in Finland. It's a real power house of a sound source, suiting to quickly grabbing some waves to patch with or for deep sound design tweaking. Everything is knob/button per function with no menus, making complex behaviours, modulations and sounds simple to access. There's LOTS of examples in this video, see the timing index below for all that's covered ... yet I'm sure there's lots left to uncover with all the options this presents."

**TIMING INDEX // CHAPTERS**

NOTE "//" sections are points of interest within a given patch.

00:00:00 Hello & patch previews

00:02:24 What is Four Seas?

FEATURE RUN DOWN
00:03:27 Tuning
00:03:47 Pitch spread
04:27 Wavetable controls
00:05:40 Outputs & LFO modes
00:06:06 Sync
00:06:39 External in & oscillator modulation
00:07:44 I2C connection

*PATCHES*

00:08:26 Huge stereo spread & vintage wavetable sizzle

00:10:20 Dual stereo melodic patching - F YEAH PYTHAGORAS!

00:14:32 Absolutely massive bass patching - sub octave layering & more
// 00:14:58 The main basic layering & patch set up
// 00:15:48 Sub bass layering
// 00:17:49 Layers playing together + side chain ducking
// 00:18:22 Glitchy FX accents
// 00:19:13 Building up the whole patch

00:19:50 All the wavetables & all the spread modes

00:20:15 OSC MOD 1 // Thru zero phase modulation
// 00:21:21 Dynamic phase mod - (“FM index”)
// 00:21:46 Thru zero phase mod on wavetables
// 00:22:15 Hard sync + modulation
// 00:22:49 Self patched phase modulation
// 00:23:46 Spread tunings & phase mod
// 00:24:20 Morphing waves + phase mod - nuts!!

00:25:08 FM operator style phase mod patching

00:28:02 Multiple techniques techno jam
// 00:28:19 Ring modulated ‘weird’ percussion
// 00:29:22 Bass chug - filter in & filter modulation
// 00:30:38 Two fun things - destructive self patched phase mod + LFO mode performance glitch fills
// 00:31:38 Performance move run down & build up

00:32:13 Exploring oscillator sync
// 00:32:45 Hard sync (blue)
// 00:33:19 Soft sync phase shift (orange)
// 00:33:37 Flip sync wave reversal (yellow)
// 00:34:06 Hard sync on wavetables

00:35:05 Musical hard sync - envelope + LFO sync sweeps

00:37:43 Percussion synthesis playground - turning 4 voices into a drum kit!
// 00:38:15 Kick drum
// 00:38:46 Wonky snare
// 00:39:38 Floppy disc hi hats

00:40:34 OSC MOD 2 // Phase distortion waveshaping - turning one VCO into a stereo waveshaped one
// 00:41:50 VCAs for dynamic wave shaping
// 00:42:49 Articulating stereo wave shaping & building sequences

00:43:57 Destroying mono beats into stereo phase distortion goodness - WOW!
// 00:44:35 The “Homebase” for basic sounds/processing
// 00:45:59 Spread wavetables for stereo beat destruction
// 00:46:33 Chop down extreme tones with LPGs / choppy rhythms

00:47:19 Guitar meets stereo phase distortion

00:48:51 Ambient chord drone break

00:51:07 Exploring LFOs - spread waves & tunings for modulating a basic patch

00:53:38 2 VCOs + 2 LFOs - audio and modulation, self patched feedback fun

00:55:47 OSC MOD 3 // FSU mode - brutal!!

00:57:29 Utter filth from the FSU shaping
// 00:59:39 BONUS TIP for noise lovers

01:01:15 Custom user wavetables & why I haven’t used them (yet)


**THIS VIDEO IS SPONSORED BY FERRY ISLAND MODULAR** they have funded the creation of this demo video, as always, any questions just ask.

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