DivKid Gets Bubbly: Thonk Double Bubble Filter Is a Stereo Mutant for Modular Mayhem

Now for the real party tricks: feedback and cross modulation. Double Bubble lets you route the output of one filter back into the other, either as audio feedback or as frequency modulation. There are dedicated controls for both, including CV inputs and attenuverters, so you can dial in anything from subtle movement to full-on toaster-fight chaos. Positive and inverted feedback? Of course. Cross mod that actually lets one filter modulate the other’s cutoff? Absolutely.

DivKid makes it clear these aren’t just gimmicks—they’re genuinely playable and interactive. Depending on your input levels, filter modes, and how much you abuse these controls, you can go from smooth stereo sweeps to wild, unpredictable textures. If you want to hear what happens when you push a filter to the edge (and then off it), you’ll want to see the video for the full sonic carnage.

Here’s where Double Bubble earns its rave stripes. DivKid runs through a barrage of patches, from stereo modular voices to monstrous MS-20 and Sherman Filterbank-inspired basses. The module’s dual architecture means you can set up everything from classic mono synth lines to stereo filter sweeps that tilt and sway like a spectral auto-pan. The sound design potential is massive—rubbery bass, bubbly filth, and vocal formant tones are all on tap.

But it’s not just about bass. The filter pinging patches are a highlight, turning Double Bubble into a melodic percussion machine or a generator of spacey, particle-like noise. Whether you’re after sad brass, rubbery weirdness, or just want to see how far you can push filter self-oscillation, DivKid’s demos show off the module’s character. The best bits? You’ll have to watch the video to hear the full range of mayhem—words can only hint at the dirt.

DivKid doesn’t just stick to synth lines—he throws Double Bubble into drum bus processing and FX feedback loops, proving it’s not just a one-trick pony. Running drums through the filter gives you everything from sub-bass boosts to crunchy, resonant sweeps. The feedback and cross mod controls let you dial in anything from subtle movement to total sonic meltdown, perfect for those who like their beats with extra bite.

FX feedback loops get especially wild, with variable bandwidth bandpass filtering, band reject tricks, and dual notch phaser effects that’ll make any dub techno fan grin. The module’s flexibility means you can patch up classic effects or invent your own flavour of chaos. If you want to see how a filter can become the heart of a performance rig, this section is pure inspiration—and a reminder that some sounds just don’t translate to text, you’ve got to hear them.

DivKid wraps up by showing that Double Bubble isn’t just for the hardcore modular crowd—it’s a fun, interactive module that rewards both seasoned patchers and curious newcomers. With its playable controls, stereo flexibility, and a knack for turning basic signals into rave-ready weapons, it’s a filter that begs for experimentation. Whether you’re after acid blurps, dubby chords, or percussion that slaps, this thing delivers. If you want your rack to sound like a proper party, Double Bubble’s got the goods.