One Synth Challenge #208: OB-Xf by the Surge Synth Team (Voting Started!)
-
- KVRian
- 928 posts since 13 Jan, 2013 from United States
Lots of tech issues getting this one done. For the first time ever Logic would not properly export -- I had to do it in pieces and assemble them. Also had lots of weird things happen, so OB-Xf may need some work. Great sounding synth though!
40 instances in Logic Pro X. Logic EQ, Compressors, Reverb, Delays, Nova Free, Khz Compactor. Enjoy
https://soundcloud.com/ontrackp/ob-xf-t ... hine-final
40 instances in Logic Pro X. Logic EQ, Compressors, Reverb, Delays, Nova Free, Khz Compactor. Enjoy
https://soundcloud.com/ontrackp/ob-xf-t ... hine-final
- KVRAF
- 24442 posts since 7 Jan, 2009 from Croatia
Care to share the details about those weird things?ontrackp wrote: Wed Jul 01, 2026 4:11 am Lots of tech issues getting this one done. For the first time ever Logic would not properly export -- I had to do it in pieces and assemble them. Also had lots of weird things happen, so OB-Xf may need some work.
Last edited by EvilDragon on Wed Jul 01, 2026 7:33 am, edited 1 time in total.
-
- KVRer
- 3 posts since 27 Dec, 2025
AUTO-ADMIN: Non-MP3, WAV, OGG, SoundCloud, YouTube, Vimeo, Twitter and Facebook links in this post have been protected automatically. Once the member reaches 5 posts the links will function as normal.
Hi everyone,Here is my entry for this month challenge :
https://on.soundcloud.com/yuFb5Eik5F8ioDxBos (https://on.soundcloud.com/yuFb5Eik5F8ioDxBos)
DAW : Bitwig
15x Ob-Xf instances
Bitwig Stock Plugins : EQ+, Delay+, Compressor+, Dynamics, Reverb, Convolution, Tool, Saturator, Peak Limiter
Third party plugins : kHs Clipper (Kilohearts), Tungsten (Green Oak), Time-12 (Tilr)
- KVRist
- 133 posts since 24 Feb, 2012
Welp, I rallied as best I could. Had to start an entirely new track, so I said "screw it" and made a single-instance entry. I quite like it, especially for being thrown together in a few hours.
DAW: Reaper
1 x OB-XF
1 x NastyVCSmkII by Variety of Sound
1 x Epic Clouds by Variety of Sound
Primarily used velocity tied to the filter and amp envelopes to create dynamics. A bit of volume and decay modulation but nothing fancy. Hope you enjoy!
https://soundcloud.com/mechanought/mech ... al_sharing
DAW: Reaper
1 x OB-XF
1 x NastyVCSmkII by Variety of Sound
1 x Epic Clouds by Variety of Sound
Primarily used velocity tied to the filter and amp envelopes to create dynamics. A bit of volume and decay modulation but nothing fancy. Hope you enjoy!
https://soundcloud.com/mechanought/mech ... al_sharing
Disco flangus shenanigans
-
- KVRist
- 353 posts since 16 Mar, 2013 from Perú
My entry for this month's contest
Tried to keep the sound pretty raw on this one.
168 instances of Ob-Xf
Bitwig 6.0.6 used
https://soundcloud.com/jruegg/beluga
Bitwig devices:
Modulators:
* Macro & 4-Macro (mostly on the bass sounds, to automate many parameters at once)
* Segments (used on ducking and maybe to control the volume of some drum layers)
* Curves (used as a mod remapper by having it at 0hz and modulating the phase, this in combo with the macros can make very crazy sounds)
Containers:
* Drum Machine (making percussion sets)
* Instrument Selector (for polyphonic 32 unison instruments, using an instance per key)
* Instrument Layer (For simple layered sounds)
* FX Layer
* XY Instrument (For the main morphing bass, which was a monster 13 instance layer + 8 macros)
FX devices:
* Tool (Volume & Width settings)
* Eq+ (static usage, no modulation on this)
* Over
* Delay+ (mild usage)
* Peak Limiter (on the master)
Others:
* Oscilloscope (to see the wave)
* Mid-Side Split (for Mid-Side Eqing)
* Note Receiver (for ducking trigger routing)
* Spectrum (to watch the things)
External VST effects:
* OTT (I should try to stop using this thing)
=======================
Listening back to my entry for OSC61 I can see how much I have improved, some things feel different after 12+ years, but others seem to be the same.
This feels like coming full circle, and it's like I've been chasing a certain sound all this time, a sound that has been elusive but I'm getting closer, maybe it's only reachable with samples and outside of the boundaries of a single synth ...
Tried to keep the sound pretty raw on this one.
168 instances of Ob-Xf
Bitwig 6.0.6 used
https://soundcloud.com/jruegg/beluga
Bitwig devices:
Modulators:
* Macro & 4-Macro (mostly on the bass sounds, to automate many parameters at once)
* Segments (used on ducking and maybe to control the volume of some drum layers)
* Curves (used as a mod remapper by having it at 0hz and modulating the phase, this in combo with the macros can make very crazy sounds)
Containers:
* Drum Machine (making percussion sets)
* Instrument Selector (for polyphonic 32 unison instruments, using an instance per key)
* Instrument Layer (For simple layered sounds)
* FX Layer
* XY Instrument (For the main morphing bass, which was a monster 13 instance layer + 8 macros)
FX devices:
* Tool (Volume & Width settings)
* Eq+ (static usage, no modulation on this)
* Over
* Delay+ (mild usage)
* Peak Limiter (on the master)
Others:
* Oscilloscope (to see the wave)
* Mid-Side Split (for Mid-Side Eqing)
* Note Receiver (for ducking trigger routing)
* Spectrum (to watch the things)
External VST effects:
* OTT (I should try to stop using this thing)
=======================
Listening back to my entry for OSC61 I can see how much I have improved, some things feel different after 12+ years, but others seem to be the same.
This feels like coming full circle, and it's like I've been chasing a certain sound all this time, a sound that has been elusive but I'm getting closer, maybe it's only reachable with samples and outside of the boundaries of a single synth ...
- KVRAF
- 24442 posts since 7 Jan, 2009 from Croatia
168 instances?!?!?!
That's insane
That's insane
- KVRist
- 39 posts since 3 Jun, 2025 from USA
Here's my last-minute entry for OSC 208 with OB-Xf. 30 day months keep catching me off guard! (Cover art is not AI this time, but a composite of flame fractals)
https://soundcloud.com/tobiasmiller/osc208
DAW: Reaper 7.64
43x OB-Xf (Surge Synth Team)
11x dearVR PRO 2 (Dear Reality)
11x ReaEQ (Cockos)
9x OTT (Xfer Records)
5x Raum (Native Instruments)
5x MIDI Note Filter (JSFX)
3x kHs Transient Shaper (Kilohearts)
3x GATE-12 (Tilr)
3x ValhallaSupermassive (Valhalla DSP, LLC)
1x TDR Kotelnikov (Tokyo Dawn Labs)
1x ReaComp (Cockos)
Master:
bx_masterdesk Classic (Plugin Alliance)
SPAN (Voxengo)
https://soundcloud.com/tobiasmiller/osc208
DAW: Reaper 7.64
43x OB-Xf (Surge Synth Team)
11x dearVR PRO 2 (Dear Reality)
11x ReaEQ (Cockos)
9x OTT (Xfer Records)
5x Raum (Native Instruments)
5x MIDI Note Filter (JSFX)
3x kHs Transient Shaper (Kilohearts)
3x GATE-12 (Tilr)
3x ValhallaSupermassive (Valhalla DSP, LLC)
1x TDR Kotelnikov (Tokyo Dawn Labs)
1x ReaComp (Cockos)
Master:
bx_masterdesk Classic (Plugin Alliance)
SPAN (Voxengo)
- KVRAF
- 2233 posts since 29 Sep, 2011
Child's play for Ruegg...
-
- KVRist
- 44 posts since 14 Jul, 2017
https://www.airwindows.com/consolidated/MadMcMan wrote: Wed Jul 01, 2026 12:35 am which airwindows plugin? i like to see if i've missed something cool. was playing with their compressors recently but the track it was on didn't make it to the final edit.
Nice Multi-FX plugin. Worth a try...
-
- KVRist
- 44 posts since 14 Jul, 2017
Running on a mulit-core server?
-
- KVRist
- 202 posts since 11 Jun, 2021
yeah i know but which fx in it did you use? he's got so many cool reverbs and things i've not tested them all.SIL3NC3_SWX wrote: Wed Jul 01, 2026 9:11 pmhttps://www.airwindows.com/consolidated/MadMcMan wrote: Wed Jul 01, 2026 12:35 am which airwindows plugin? i like to see if i've missed something cool. was playing with their compressors recently but the track it was on didn't make it to the final edit.
Nice Multi-FX plugin. Worth a try...![]()
- KVRer
- 6 posts since 15 Oct, 2023
Voted.
There are so many wonderful music beautifully crafted and produced.
Thank you for the challenge, KVR, and thank you for sharing the beautiful entries.
There are so many wonderful music beautifully crafted and produced.
Thank you for the challenge, KVR, and thank you for sharing the beautiful entries.
-
- KVRist
- 210 posts since 16 Jul, 2018 from Czech Republic / Prague
If you don't mind, I would like to share a companion desktop app for the original voting system with you. I hope you will find voting with this app even more entertaining.
Application Webpage
More information in OSC Discussion Thread

Application Webpage
More information in OSC Discussion Thread

-
Aleksey Zhehanov Aleksey Zhehanov https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=810233
- KVRer
- 7 posts since 11 Jun, 2026 from Russian Federation
I'm sorry, but I can't log in to this app with my KVR account. Is there any way to vote via a web browser?
-
- KVRist
- 210 posts since 16 Jul, 2018 from Czech Republic / Prague
For OSC voting, you need to use your OSC credentials (like for the original OSC app), not KVR’s
