OB-Xf by Surge Synth Team

[baconpaul]

Installed it, but this has no factory presets. Where are the pressets? Factory data is here: C:\ProgramData\Surge Synth Team\OB-Xf\Banks\Factory.fxb but in the GUI I can't choose presets if they existing anywhere...

The factory presets are the friends we made along the way.

Or more seriously, we are collecting a factory bank now and it will be there before we call it 1.0 but right not it just ships with a 256 wide init bank

[dune_rave]

Installed it, but this has no factory presets. Where are the pressets? Factory data is here: C:\ProgramData\Surge Synth Team\OB-Xf\Banks\Factory.fxb but in the GUI I can't choose presets if they existing anywhere...

The factory presets are the friends we made along the way.

Or more seriously, we are collecting a factory bank now and it will be there before we call it 1.0 but right not it just ships with a 256 wide init bank

Ah, I See.

[Teksonik]

On the subject of presets, I can't think of a better synth to learn sound design on.

It's simple and logically laid out. Get in there and start turning knobs and soon you'll be making your own presets.

[EvilDragon]

I concur!

[onerob]

A little warning about the Rand button: If it decides to switch to the L4 filter you'll get 500+ dB of gain boost. You'll want a limiter/clipper/muter in your plugin chain to protect your ears and maybe hardware.

[EvilDragon]

This is what we recommend as standard procedure when testing nightlies!

I do wonder if this is really in every case when switching to L4 or if it depends on some other factors.

[onerob]

I've really hammered that button looking for any other clues but, for me at least, L4 is the one identifiable culprit. If I switch to it manually using the UI there's no problem.

[EvilDragon]

Can you note if it ALWAYS does it, regardless from which filter type you got to L4, or if it happens only between certain filter types (like from 2 pole to 4 pole Xpander L4)?

[onerob]

I haven't been able to notice any pattern in terms of switching from one particular filter to L4.

If Rand switches on 4-Pole but not the Xpand button, and I then manually enable Xpand and find that it's been set to L4, that triggers the gain boost too.

If I manually set the filter to L4, then press Rand and Rand keeps it on L4, it doesn't boost the gain. It has to be switched to L4 from something else.

[baconpaul]

I was just taking a peek at this and while I couldn't repro it exactly I found a really nasty error with setting integer paras in the randomizer which I've since fixed. The next nightly might solve this problem. I was able to trigger debug asserts with the randomizer which I think if unlucky would blow up the filter config as you say.

[onerob]

Just tried the new nightly and it seems to have done the trick – thanks. It took a huge number of clicks to get L4 to appear just a couple of times but on both those occasions there was no problem.

[baconpaul]

Awesome thanks!

Turns out lots of other values were also wrong which is how I found it but I think only the expander mode randomization ended up with random memory weighting the poles. Appreciate the test!

[Vortifex]

Could a graphics wizard out there make a darker and less contrasty theme? Or is it possible for me to access the files somehow to do it myself?

Edit: Nvm, it's in the Documents folder

Edit edit: the User theme is very fuzzy at 125% zoom, is it possible to make it sharp like the Default (embedded) theme?

Screenshot 2025-10-15 215047.png

[EvilDragon]

Not really... Embedded theme is fully vector, the default theme is raster.

[Vortifex]

Bugger. Alright, thanks.