Discussion about the Korg PolySix synthesizer group photo

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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-28 23:40 UTC

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Re: Making the P6 brighter

2013-07-16 by feline1973

yes, fair point that Soundcloud's yukky 128kbps does the sound no favouts! The final timbre on the WAV just reminds me of a loudspeaker dying though lol 

I agree, it would be useful to have some sonic examples with the filter more closed, so we can hear more improvement in envelope snappiness without getting distracted by raspy sizzles.

--- In PolySix@yahoogroups.com, Oakley Sound <oakleylist@...> wrote:
>
>  > it sounds very noticeably more hissy to me the mod, and not so much 
> "snappy" as just raspy and nasal!
> 
> One thing to point out here is that Soundcloud's compression algorithm 
> is particularly bad at highlighting things like increased brightness - 
> quite often turning them into something nasty. So it's worth downloading 
> the file to give it a proper listen to.
> 
>  > https://soundcloud.com/synthhacker/korg-polysix-sound-of-removing
> 
> Having said that the third sample on that wav file sounds pretty awful 
> on one particular voice. Perhaps Chip could upload a more traditional 
> bass synth sound with a swept envelope.
> 
> It's worth noting that all the mod does is remove the dynamic noise 
> reduction low pass filter that the whole instrument goes through. If you 
> want your sound to be a little darker as before then simply turn down 
> the cut-off frequency just a bit. What the mod does is give you that 
> choice - you can now have it brighter if you want where previously you 
> couldn't. The Polysix's SSM2044 voice filters are now the ones doing the 
> filtering and not having to work against the DNR filtering.
> 
> The mod does not significantly affect loud patches with a long attack 
> since the DNR filter will be fully open 100mS after hitting the first 
> note. Although, by bypassing (or removing) the DNR filter you will have 
> less overall noise and distortion within the signal.
> 
> But what the mod does do is sharpen the sound of fast transient sounds. 
> So plucky sounds will have a lot more life to them.
> 
> I can't think of any other synth that has a DNR filter applied to its 
> main output when the ensemble/chorus unit is not engaged. The Polysix 
> already has noise reduction fitted to the ensemble circuitry so it does 
> seem somewhat overkill to install yet another filter on the direct output.
> 
> One final point is that if one is fitting the mod like Chip has done 
> with the +15V being sent to the envelope follower's buffer then this 
> could be done with a switch fitted to the rear panel. Then one can 
> engage the DNR filter on the fly.
> 
> Tony
> 
> http://takla-makan.bandcamp.com/
> http://www.oakleysound.com
>

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