Wiardgroup

Hello! I've read the Wiard site, the manuals, Grant's Synth DIY 
site, searched and skimmed the archives here and still have a 
few very basic questions which may be useful for future 
reference in the archives, so I'll ask them here instead of 
emailing anyone directly (and thanks again to Doug Pearson!)


- Do the Borg filters self-oscillate (individually or in series?)

- Do the Borg filters process DC signals? What are the ranges of 
the Fcs?

- What are the frequency ranges for the LFOs on the Borg filter? 
Are they CV or controlled solely via the associated Osc knobs? 
(Guessing that the three CV ins are strictly for the filters.)

- I have heard that the Envelator can be set to linear response via 
a PCB jumper or setting, making for a greater range of available 
overall envelope slopes (good info on this at Grant's DIY site). Is 
there indeed a choice of slope that is configurable internally?

- The Envelator does not appear to have feedback wired up on 
the Amod and Dmod input jacks, although they appear to be 
interrupt types in the block diagram in the online manual. I'll take 
it that this is an extremely simple mod (tapping off of the + 
output) and can be possibly be added to an order? 

- The Start-up patch sheet indicates that on the Classic VCO, the 
osc pulse output fires the S/H; is this an interrupting jack for 
external clocking of the S/H so that it may be gated from external 
sources? (Thanks, it appears to be so, but I can't make out the 
name of the jack.)

Easier,

-Mike

Hi Mike 
a few off the top of my head...

> - Do the Borg filters self-oscillate (individually or in series?)
>
yes, individually
 
>  frequency ranges for the LFOs on the Borg filter? 
> Are they CV or controlled solely via the associated Osc knobs?

solely by the Knob
 
> (Guessing that the three CV ins are strictly for the filters.)

correct

> - The Envelator does not appear to have feedback wired up on 
> the Amod and Dmod input jacks, although they appear to be 
> interrupt types in the block diagram in the online manual. I'll take 
> it that this is an extremely simple mod (tapping off of the + 
> output)

very simple, the the back of the jack board is totally accessible

> and can be possibly be added to an order? 

that would be up to the 'factory'
;'>


c-ya
-doc

Hi Mike,

I'll try to answer your questions. Let me know if I've erred.

>- Do the Borg filters self-oscillate (individually or in series?)

Yes and yes. And they can get very resonant before the onset of 
oscillation. Beautiful filter, and slightly schizophonic in nature. 
Buttery smooth as a VCA, squelchy and present as resonance is brought 
in.

>- Do the Borg filters process DC signals? What are the ranges of
>the Fcs?

Yes on DC signals. FC ranges from near DC to a probably a little under 18k.

>- What are the frequency ranges for the LFOs on the Borg filter?

Mine are about a minute to 20hz in low mode, and 20hz to around 16k 
when the switch is in high mode.

>Are they CV or controlled solely via the associated Osc knobs?

No, the top FC jack is cv in for the LFO. Then there's a 1v/oct and 
attenuated FC in for the filter section.

>- I have heard that the Envelator can be set to linear response via
>a PCB jumper or setting,

I believe you are thinking of the Classic VCO and Waveform City 
internal envelopes, which are switchable between lin and exp. The 
Envelator is linear by default, and the slope is bendable by using 
positive or negative feedback. Coupled with the pannable mixolator 
response, many varied attack and release characteristics can be 
achieved.

>- The Envelator does not appear to have feedback wired up on
>the Amod and Dmod input jacks,

This is a simple normalization procedure using the rear of the 
jackboard and  can be performed in no time. I'm sure Grant would do 
this for module orders.

>- The Start-up patch sheet indicates that on the Classic VCO, the
>osc pulse output fires the S/H; is this an interrupting jack for
>external clocking of the S/H so that it may be gated from external
>sources?

No. This requires a minor mod. I was going to do this to my first 
oscillator, but the WoggleBug sort of negates the need for this mod 
by giving you two clockable random generators. Still, it can be done.

The bank select cv in mod on the WaveForm City is stupidly simple.

Michael

Thank you folks for your replies, and for those to follow!

> >LFOs on the Borg filter? 
> > Are they CV or controlled solely via the associated Osc 
knobs?
> 
> solely by the Knob

So we've got two "yays" and one "nay" regarding CV control of the 
Borg LFOs..?

> > - The Envelator does not appear to have feedback wired up 
on 
> > the Amod and Dmod input jacks, although they appear to be 
> > interrupt types in the block diagram in the online manual. I'll 
take 
> > it that this is an extremely simple mod (tapping off of the + 
> > output)
> 
> very simple, the the back of the jack board is totally accessible
> 
> > and can be possibly be added to an order? 
> 
> that would be up to the 'factory'
> ;'>

Smokestacks dirtying the skies of Wisconsin as they produce 
hundreds and hundreds of 300 systems... :-)

That's great advance thinking to have those interrupts ready for 
easy normalization. 

And yes, I was very impressed with the Envelator's slope-shifting 
abilities, and the resulting amplitude shapes in combination with 
the continuously-variable response of the Mixolator. 

As I would sell off a couple of Moog VCAs (among other things) 
to fund some 300, the thought crosses my mind of having 
Envelators and a Dual Mixolator on the Moog as well. Mmmm...

Easier,

-Mike

Hello again Mike,
OOPS!!!
--- In wiardgroup@y..., "its_peake" <its_peake@y...> wrote:

> So we've got two "yays" and one "nay" regarding CV control of the 
> Borg LFOs..?

wellllll no
make that 3 'yays'
i thoroughly misunderstood the question. (i focused on the word 'solely' and then hallucinated a connection to the fact that i have some custom dual-function pots on mine and ... oh hell, just trust me you don't wanna know)
the other two eminent responding members are correct on this issue, and i apparently should stop drinking so much tab & aqua-velva before logging on to the wiard group (hic!)

sincere apologies for the bum steer,
-doc
>hic<

<<And yes, I was very impressed with the Envelator's 
slope-shifting 
abilities, >>

Yes, this is a great feature indeed.  I think the Modcan also does 
it. 

Stone me to the ground and make me eat from a 
monogrammed dog dish if I'm wrong here, but aren't the slope 
curves of any vc'able eg possible be feeding it's own output into 
it's vc input???


its_peake wrote:

And yes, I was very impressed with the Envelator's slope-shifting 
abilities, and the resulting amplitude shapes in combination with 
the continuously-variable response of the Mixolator.

you are right, but I think that it only makes sense if the starting 
point is linear as in the Wiard, Serge, Buchle envelopes.

mark

(i think you can figure that out) wrote:

><<And yes, I was very impressed with the Envelator's 
>slope-shifting 
>abilities, >>
>
>Yes, this is a great feature indeed.  I think the Modcan also does 
>it. 
>
>Stone me to the ground and make me eat from a 
>monogrammed dog dish if I'm wrong here, but aren't the slope 
>curves of any vc'able eg possible be feeding it's own output into 
>it's vc input???
>
>
>its_peake wrote:
>
>And yes, I was very impressed with the Envelator's slope-shifting 
>abilities, and the resulting amplitude shapes in combination with 
>the continuously-variable response of the Mixolator. 
>
>
>
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