SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
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SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Xaoc Devices presents:
Zagrzeb
1979 Stereo Four Pole VC Filter
8hp, 260 EUR MSRP, shipping in a couple of weeks.
ModularGrid: https://www.modulargrid.net/e/xaoc-devices-zagrzeb
User manual: http://xaocdevices.com/manuals/xaoc_zagrzeb_manual.pdf
Are you ready for some stereo action? Xaoc Devices continues exploring the stereo processing realm with two new modules. Here’s what we’ve got in store for you for this year’s Superbooth.
Zagrzeb is a stereo multimode 4-pole (24dB/oct) state variable voltage-controlled filter (SV VCF). It offers five distinct frequency responses, three of which are available simultaneously. Spread control allows for animation of the stereo image by moving the left and right filter cutoff frequencies in opposite directions. Zagrzeb is designed to sound smooth and clean unless it is overdriven with a hot signal— however, it does not lack character! We believe it will be appreciated by fans of old Japanese synthesizers, but bear in mind that Zagrzeb is not a clone of any existing design. The four-pole state variable structure is a new development and offers unique sonic characteristics. While Zagrzeb is designed for filtering stereo signals (e.g. samples or stereo oscillators like Xaoc Devices Odessa), it can easily handle mono signals and is capable of creating a faux stereo pair thanks to a special phase shifting network at the input.
- All-analog design
– Stereo, four-pole state variable filter
– Five frequency responses, three available simultaneously
– 24dB/oct low pass and 24dB/oct high pass filtering
– 3 band pass filter slope configurations
– Voltage controlled Spread control for animating the stereo image
– No LF drop at high resonance
– Mono to stereo image effect
– 8hp, skiff friendly
– Current draw: +70mA/–60mA
– Reverse power protection
Come visit us at booth E255 on Superbooth 2021 to play some new Xaoc Devices modules!
Last edited by mantiwhore on Fri Sep 24, 2021 3:35 am, edited 1 time in total.

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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Looks lovely. Looking forward to hearing what the spread effect might sound like
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Oh boy, this is tasty. Can never have enough filters, is that how the saying goes? 

There is no theory. You merely have to listen. - Claude Debussy
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Interesting that it can be patched to be a 48db/oct mono filter too 

Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
I love the layout, big knob for cutoff and a vertical fader for resonance. IMO that's the best way to represent a resonance control.
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
I was looking for a small stereo filter and this popped up - pre-ordered along with the Mińsk!
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Man, this looks GREAT.
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Definitely curious to hear some filter sweeps with that spread control
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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Nice! This could be a great alternative stereo filter to go along with the Matriarch
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
I'm not familiar with stereo filters. I can see that this one has a "Spread" CV, which (according to the manual) will "animate the stereo image by moving the left and right filter cutoff frequencies in opposite directions". Also, patching in only a left/mono signal "creates a pseudo-stereo effect".
With stereo filters, if you input two completely separate signals (say, different voices) into the left and right channels, is it typical that you can use the two channels independently (albeit with the same characteristics) with no cross-talk? Or will there always be some sort of blending between the two channels?
With stereo filters, if you input two completely separate signals (say, different voices) into the left and right channels, is it typical that you can use the two channels independently (albeit with the same characteristics) with no cross-talk? Or will there always be some sort of blending between the two channels?

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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
No, there is no blending between channels. If you use two inputs, the two signal paths are separate.megarat wrote: ↑Fri Sep 24, 2021 12:46 am With stereo filters, if you input two completely separate signals (say, different voices) into the left and right channels, is it typical that you can use the two channels independently (albeit with the same characteristics) with no cross-talk? Or will there always be some sort of blending between the two channels?
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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
e
Sounds nice in the little bit you can hear in the video.
"Zagrzeb" sounds nicer that "Zagreb" too!
Sounds nice in the little bit you can hear in the video.
"Zagrzeb" sounds nicer that "Zagreb" too!
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Interesting announcement!
Can we hear some demo on various sounds?
The bleep-bloop-bluup from Superbooth’21 isn‘t really helpful, unfortunately.
Thanks!
PS: odd you had to stick a 2nd „z“ into Zagreb but I guess that‘s how you say it in Poland. Glad it‘s „Belgrad“ and not „Belgrzad“
)
Can we hear some demo on various sounds?
The bleep-bloop-bluup from Superbooth’21 isn‘t really helpful, unfortunately.
Thanks!
PS: odd you had to stick a 2nd „z“ into Zagreb but I guess that‘s how you say it in Poland. Glad it‘s „Belgrad“ and not „Belgrzad“

Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Thank you, I appreciate the response.

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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter

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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Very nice. All the best with it.
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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Dear XAOC. Can you start assembling some of your builds with the black faceplates for people like me who are all thumbs?
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Some writers confuse authenticity, which they ought always to aim at, with originality, which they should never bother about - W.H. Auden
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Does someone knows the release date for this filter?
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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
It is already being shipped, and is available in some shops.
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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter

Kosmikos’ tracks on Soundcloud: https://soundcloud.com/user-254876270
Kosmikos TV: https://youtube.com/@kosmikos-tv
Kosmikos TV: https://youtube.com/@kosmikos-tv
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Ordered mine from Soundofyou, they seem to be the last shop with stocks in EU at least.
Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Awesome, any idea on when the US may get them, like Perfect Circuit? Or should I grab one from the EU to be safe?
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Re: SB2021: Xaoc Devices Zagrzeb 1979 Stereo Four Pole VC Filter
Great demo! Great music! Thanks for that.