If we have a complex ... can we do without a wavefolder?


complex what? vco, I suspect...
possibly, depends on the complex oscillator and what you want to do - a lot people are quite happy without either...
I don't have a complex oscillator, but I have a lot of wavefolders, which I often use for video synthesis - but sometimes for audio... I'd rather roll my own complex oscillator (from basic oscillators, mixers and wavefolder/shaper)...

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities


I mean a complex like Csl ... it is also a bifold..


so a complex oscillator... then see advice above..

the instruo cs-l is a complex oscillator which also includes a wavefolder - having checked the manual - it seems that the wavefolder cannot process external signals - so if this is what you want - ie a wavefolder to process signals other than those generated by the c-sl, then yes, you would also require a separate wavefolder - I suspect this is common with most complex oscillators that include wavefolders

a 'bifold' is a specific wavefolder module made by intellijel and as such is not included in the instruo c-sl

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities