So to get external audio in, you put the signal into pin 2 or 3 and
ground at pin 1?
And to change from 24dB to 12dB you put a switch on pin 5 and 6?
--- In korgpolyex@yahoogroups.com, ">>>marjan<<<" <urekar.m@...> wrote:
>
>
> Here's the pinout:
>
> KORG NJM2069
>
> Pin#Function
>
> 1Audio In GND (GND)
> 2Mixer Signal 1 Level CV In
> 3Mixer Signal 2 Level CV In
> 4VCF Resonance CV In
> 5VCF 12dB/oct Audio Out
> 6VCF 24dB/oct Audio Out
> 7VCA Signal In
> 8VCA Level CV Log In
> 9VCA Level CV Lin In
> 10VCA Signal Out
> 11Vss (GND)
> 12-Vee
> 13VCF Cutoff CV Lin In
> 14VCF Cutoff CV Log In
> 15VCF cap C4
> 16VCF cap C3
> 17VCF cap C2
> 18VCF cap C1
> 19VCF Ext Audio In
> 20Mixer Signal 2 In
> 21Mixer Signal 1 In
> 22+Vcc
>
>
> Chip has separate
> ∗VCA with in,out and lin&log CV ins,
> ∗VC Mixer with two audio inputs, two CV ins for each input level
> control, it's output is
> hardwired to vcf audio in (no ext pin here), separate gnd for input
> signal
> ∗VCF with separate ext audio input (in addition to hardwired input from
> vc mixer),
> output, lin&log cv ins, four pins for integrating capacitors, vc
> resonance with
> pin for res cv
>
> This is almost half of synt-chip type just like old CEM chips, but
> sounds much
> fatter IMHO. Short look at pins 5/6 reveals easy mod for poly800 to get
> 2/4 pole
> filter... Poly800 misuses it's vca for adding 3rd vc audio channel to
> the mix
> as 'real' vca control is performed digitally inside osc chip driven by
> soft
> envelopes.
>
>
>
>
> ---
>
>
>
> marjan
>
>
> me : Marjan Urekar
> e-mail: urekar.m@...
> s-diy : http://surf.to/marjansystems
> music : http://go.to/forcemajeure
>