This is one of the more interesting of the Core’s features. It has the same dual-filter architecture with different filter slopes and styles to choose from as its Blofeld ancestor (Lopass, Hipass, Bandpass, etc), but there are notably more options to choose from as far as filter models. SVF is its default filter type, and as can be expected, it has a pretty typical digital filter sound, not unlike the Blofeld.
After that, we start getting into interesting territory. Raiser sounds like Waldorf’s answer to Moog’s famous Ladder filter, and while I’m not sure it behaves or sounds exactly like a vintage analog Ladder filter, it does sound nice on the 24 dB slope. It doesn’t sound entirely analog, but it is nice.
After that there are Largo and Nave style filters, which I’m not the biggest fan of. I designed a bank of patches for Largo, and was not as fond of its filter as the Blofeld’s.
Where things get cool is with the PPG filter model. That actually sounds the most analog of the filters on the unit, and it does some really nice round and juicy bass and pluck and acid sounds, especially when selecting the Sat or Dirty 24dB filter types. I found myself using this one a lot when designing bass and other patches that I needed to sound more “analog”, because it was the most convincing digital emulation of an analog filter I’ve heard outside the Virus line.
And the addition of the Quantum filter model is a nice addition. I haven’t had a chance to get my hands on a Quantum to A/B test the analog filter in person, but I suspect that the real thing sounds a bit richer than this emulation. But having said that, including it here is super helpful, as it means I can design analog style pads and plucks and basses on the Core, and a Quantum user can load them straight in and have the sounds come out the other side of their true analog filters sounding really nice and proper, without having to manually tweak parameters or swap filter models to get them working right (an issue one of our devs has encountered porting 4-pole Lopass Filter sounds from the Virus TI2 down to work on the Virus B)
If your aim is chasing vintage analog tones with vintage analog filters, the PPG filter really wins the day here.
Bear in mind, if you want to use a Comb Filter, it doesn’t live in the Filter Type or Model menus. The Comb filter has been relegated to the Digi Former menu, which we found slightly annoying, as we like doing things like combining rate reducer effects with comb filters to create trippy psychedelic textures for Dark Psytrance and Ambient soundscape patches.
Now is actually a good time to discuss the Digi Former section in a bit more detail.
It basically acts like a filter-level effect section, mostly devoted to Drive/Distortion effects, rate/ bit rates, comb filters, and other modifiers. You can set the effects to affect the sound before and after the filter, to change the intensity of it, which is nice. On the Blofeld the effect always affected the sound after the filter, so subtlety was hard to achieve except at very low amount settings. So you can add gentle tube saturation to sounds on the Iridium Core the same way you could on the Blofeld, but even more gently.
The Bit Crusher is super nice, and is a lot of fun to mix and match different Bit and Rate amounts, to create super grainy and crunchy noises. One feature we would really like to see in a future update on the Iridium Core though, is a Mix control for the Rate/ Bit Reducer on the Digi Former. Or have the whole effect shifted around to become a dedicated effect in the FX section. It sounds really nice, but having its volume on a sound sitting at one level, makes it hard to create subtle grains and crunch to sounds. The Level control in the Digi Former parameter affects the entire patch’s level, which is inconvenient when trying to add subtle talking rate movement to a bass patch. Your choices are either super loud and overwhelming grit, or so subtle you can’t hear the grains of the sample rate reduction. At least the available parameters of the effect can be modulated in the Mod Matrix, so you can do rate-reduced talking sounds, which is a feature we sorely wished for on the Blofeld. That is super nice.
Another feature that would be cool to see would be an 18 dB/ 3-pole filter, especially on the analog model filters, for achieving more classic 303 style Acid sounds. The original TB-303 had an 18 dB 3-pole filter, and the Mininova and Virus TI2 have it, and it makes it easier to create really classic Acid sounds on those.
It’s still totally possible to make killer Acid sounds on the Core, don’t get us wrong. We made plenty of them. We just know the really authentic sound would be even easier to replicate on a 3-pole filter, which would be awesome to see here.
The dual filter behavior is a lot of fun to experiment with, and we used the dual filter on the Virus TI2 to roughly emulate analog lopass filter sounds on it with the standard lopass, and we also tinkered around with the same idea here with the Core, since it’s also pretty easy to dial in the balance of the filters. Having 2 independent filters is definitely a must for all Ambient and Psytrance and Dub Techno producers, and if creating hazy morphing chord sweeps with tons of movement across mixed hipass and lopass/bandpass filters with lots of reverb and delay and phaser is your thing, you will not be left wanting, here.
101 uplifting Trance presets, compatible with the Waldorf Iridium, Iridium Core, and Quantum hardware synthesizer series. This soundbank is 100% Trance-oriented and comes packed with euphoric leads, majestic pads, thundering basses, epic plucks, and screaming 303 acid patches, with no filler sounds. The patches in Arete come straight out of songs written using the legendary Waldorf Q, XT, microQ, Blofeld, and Pulse synths. Designed to fully exploit the Iridium’s advanced virtual analog engine, complex wavetables, deep mod matrix, and dual multi-mode filters, this soundset pushes the Iridium and Quantum to their fullest potential!
Patches in Arete are based on sounds from songs by the likes of Rank 1, Pulser, Driftmoon, Armin van Buuren, Ferry Tayle, 7 Skies, DuMonde, Arctic Moon, Wavetraxx, Aly & Fila, Tom Porcell, Giuseppe Ottaviani, Roger Shah, Ferry Corsten, Ralph Novell, Basis 1, Gaia, Alphazone, Aimoon, The Mystery, Dawnchaser, Denga & Manus, The Thrillseekers, Airbase, BT, Manian, Ace Da Brain, Akira Kayosa, Ron van den Beuken, Scooter, DJ Scot Project, Vengeance, Marcel Woods, Ruff Stuff, K-System, Mike Shiver, Phalanx, and many many more!
No additional FX were applied to these sounds post-recording
Many sounds use the Modwheel for added control
Sounds in this preset pack are suitable for the Uplifting Trance, Hard Trance, Tech Trance, Progressive Trance, and Classic Trance genres, and are organized by category into Leads, Plucks, Pads, Acid sounds, and Basses, for quick reference
All patches are royalty-free and delivered instantly via email as a 24-hour download link
Requirements: Waldorf Iridium synthesizer
Also compatible with Waldorf Iridium Core and Waldorf Quantum Series
“This bank makes full use of the Iridium’s powerful VA and wavetable engines and those superb filters that make it stand out from the crowd.” - Rob Puricelli, GearNews