MOTM

So Paul, JH, et. al...

Anybody working on a -24 dB highpass filter? It would be a nice 
compliment to the -24 dB lowpass filter, though you will have the 
challenge of hiss to solve. You could then make a simple filter 
coupler module into which the HPF and LPF could be patched.  Outputs 
would include HP, LP, and BP and it would require very few active 
parts.  What say y'all?


johnm

> Anybody working on a -24 dB highpass filter? It would be a nice 
> compliment to the -24 dB lowpass filter, though you will have the 
> challenge of hiss to solve. 


Yes. It's a resonant HPF with variable slope. See filter plots at
http://www.oldcrows.net/~jhaible/jh5/jh5.html (scroll down)
Hiss is not a problem.

JH.

--- In motm@yahoogroups.com, "konkuro" <konkuro@a...> wrote:
> So Paul, JH, et. al...
> 
> Anybody working on a -24 dB highpass filter? It would be a nice 
> compliment to the -24 dB lowpass filter, though you will have the 
> challenge of hiss to solve. You could then make a simple filter 
> coupler module into which the HPF and LPF could be patched.  Outputs 
> would include HP, LP, and BP and it would require very few active 
> parts.  What say y'all?

I really like the idea (high pass equivalent of the '440 and a filter 
coupler) - I would get both.

Could the coupler have a continuously variable output (LP to BP to 
HP)?  (Not sure if that is technically possible or not.)  Maybe with 
CV control for that?  :)


seth

--- In motm@yahoogroups.com, "JH." <jhaible@d...> wrote:
>
> Yes. It's a resonant HPF with variable slope. See filter plots at
> http://www.oldcrows.net/~jhaible/jh5/jh5.html (scroll down)
> Hiss is not a problem.

So, what we really want is your new design (variable slope HPF) plus a 
low pass equivalent (variable slope LPF) and a filter coupler.

Maybe the coupler could be designed with a "spacing" control - a 
frequency CV into the coupler with CV outputs to the LPF and HPF to 
spread the filters in BP mode.  (Along with the continuously variable 
output from LP to BP to HP assuming this is possible.)


seth

Oh man--I forgot how beautiful that JH-5 panel was. I swear, when it 
comes to machines, you have to leave things to the Germans to do 
right.  (That is, assuming JH is German).

Oh Paul!  Yoo-hoo, Paul! How 'bout a total revamp of the MOTM line 
with Juergen in charge of panel design?  Might even be willing to 
sell my precious dotcom for that...

Wait a minute... "Schreiber" *is* German!

johnm

--- In motm@yahoogroups.com, "JH." <jhaible@d...> wrote:

> > Anybody working on a -24 dB highpass filter? It would be a nice 
> > compliment to the -24 dB lowpass filter, though you will have the 
> > challenge of hiss to solve. 
> 
> 
> Yes. It's a resonant HPF with variable slope. See filter plots at
> http://www.oldcrows.net/~jhaible/jh5/jh5.html (scroll down)
> Hiss is not a problem.
> 
> JH.

Unless I'm mistaken, the JH-5 panel was fabricated by Schaeffer, so if you
wanted your MOTM to look like that, you could replace all of the panels with
ones made by Schaeffer. It could be a little expensive, though--figure at
least $40 for 1U panels. I'd guess that JH spent at least $700 on that
panel, probably more. 

I've become quite enamored with Schaeffer after having used their panels for
for a couple of things that are outside of the Stooge Panel purview. If you
don't require that all of your panels look exactly like MOTM panels, it's a
wonderful service.

--Adam

> -----Original Message-----
> From: konkuro [mailto:konkuro@...]
> Sent: Saturday, June 05, 2004 3:52 AM
> To: motm@yahoogroups.com
> Subject: [motm] Re: Time for an HPF!
> 
> Oh man--I forgot how beautiful that JH-5 panel was. I swear, when it
> comes to machines, you have to leave things to the Germans to do
> right.  (That is, assuming JH is German).
> 
> Oh Paul!  Yoo-hoo, Paul! How 'bout a total revamp of the MOTM line
> with Juergen in charge of panel design?  Might even be willing to
> sell my precious dotcom for that...
> 
> Wait a minute... "Schreiber" *is* German!
>

On Saturday 05 June 2004 16:59, Adam Schabtach wrote:
> Unless I'm mistaken, the JH-5 panel was fabricated by
> Schaeffer, so if you wanted your MOTM to look like that,
> you could replace all of the panels with ones made by
> Schaeffer. 

The JH5 has a Schaeffer panel? I didn't recognize it at 
such. Especially the graphics and fonts do not look 
'engraved' as all, more like printed. How do you do that on 
a Schaeffer panel?

- Robert

> The JH5 has a Schaeffer panel? I didn't recognize it at
> such. Especially the graphics and fonts do not look
> 'engraved' as all, more like printed. How do you do that on
> a Schaeffer panel?

I don't know for sure, but it looks like a Schaeffer panel to me, and I
thought that Paul told me in a phone conversation that JH uses Schaeffer for
his projects. Only JH knows for certain, of course. If it's not Schaeffer,
I'd certainly like to know how he did a one-off panel of that complexity and
detail.

--Adam

> Maybe the coupler could be designed with a "spacing" control - a
> frequency CV into the coupler with CV outputs to the LPF and HPF to
> spread the filters in BP mode.  (Along with the continuously variable
> output from LP to BP to HP assuming this is possible.)


The Interpolating Scanner (which allows VC crossfade between any
filters you connect at its input) is in Paul's "design input queue" as well.

A SEM filter (including a BPF function), too.

JH.

It's a Schaeffer panel, yes. I don't remember the exact picing, but it was
around 200 ... 250 Euros I think.

It's engraved, not printed. But ther is paint applied in the carvings (which
is
a considerable amount of cost.) Some of my panels are without paint,
especially the large JH-3200 which would have been totally unaffordable
with paint. But I think the blank aluminium colour for lettering is quite
nice
on the dark background, too. Saves a lot of money.

BTW, anyone ordering dark panels from Schaeffer *please* nag them
about re-introducing "dunkelbronze" colour! It's almost black, but
looks more valuable than plain black. Apparently no one knows this,
so they stopped making dunkelbronze because of lack of demand.
IMO *ever* black panel looks better in dunkelbronze! Especially
in combination with black knobs.

JH.



----- Original Message ----- 
From: "Adam Schabtach" <adam@...>
To: <robnet@...>; <motm@yahoogroups.com>
Sent: Saturday, June 05, 2004 5:20 PM
Subject: RE: [motm] Re: Time for an HPF!


> > The JH5 has a Schaeffer panel? I didn't recognize it at
> > such. Especially the graphics and fonts do not look
> > 'engraved' as all, more like printed. How do you do that on
> > a Schaeffer panel?
>
> I don't know for sure, but it looks like a Schaeffer panel to me, and I
> thought that Paul told me in a phone conversation that JH uses Schaeffer
for
> his projects. Only JH knows for certain, of course. If it's not Schaeffer,
> I'd certainly like to know how he did a one-off panel of that complexity
and

> detail.
>
> --Adam
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>

----- Original Message -----

From: Adam Schabtach <adam@...>
I've become quite enamored with Schaeffer after having used their panels for
for a couple of things that are outside of the Stooge Panel purview. If you
don't require that all of your panels look exactly like MOTM panels, it's a
wonderful service.

I too like the Schaeffer look of anodized and engraved.  I don't care for
the Schaeffer panels that don't have pot tick marks though.  I know they add
a lot of expense to the Schaeffer panel.  If it were not for the matching of
Pauls finish (our # 1 goal) in panel appearance, Stooge panels would
probably have been anodized and engraved.  Prodicuing the popular ones 20
and 30 at a time woudl bring the price well down below a Schaeffer price.
But, it was not to be.

I'm glad that we have Schaeffer option.  Having a general idea of how many
are probably made that way, I know we coudl certainly not keep up with the
demand of that AND what we are already doing.  On bog advantage is that one
shop does eveything.  So, the delivery time is so much better tyhan what us
poor Stooges can eek out.

Larry

Hmm, that's less expensive than I expected. I thought that all of those tick
marks and long dividing lines would have added up to considerable expense.

I have considered having my panels done without the paint, to save money. I
am glad to read that you think it looks good. Maybe I will try it on my next
panel.

It seems that the U.S. branch of Schaeffer still offers dunkelbronze:
http://frontpanelexpress.com/material/variety.htm#06

--Adam

> -----Original Message-----
> From: JH. [mailto:jhaible@...]
> Sent: Saturday, June 05, 2004 9:50 AM
> To: adam@...; robnet@...; motm@yahoogroups.com
> Subject: Re: [motm] Re: Time for an HPF!
> 
> It's a Schaeffer panel, yes. I don't remember the exact picing, but it was
> around 200 ... 250 Euros I think.
> 
> It's engraved, not printed. But ther is paint applied in the carvings
> (which
> is
> a considerable amount of cost.) Some of my panels are without paint,
> especially the large JH-3200 which would have been totally unaffordable
> with paint. But I think the blank aluminium colour for lettering is quite
> nice
> on the dark background, too. Saves a lot of money.
> 
> BTW, anyone ordering dark panels from Schaeffer *please* nag them
> about re-introducing "dunkelbronze" colour! It's almost black, but
> looks more valuable than plain black. Apparently no one knows this,
> so they stopped making dunkelbronze because of lack of demand.
> IMO *ever* black panel looks better in dunkelbronze! Especially
> in combination with black knobs.
> 
> JH.
> 
> 
> 
> ----- Original Message -----
> From: "Adam Schabtach" <adam@...>
> To: <robnet@...>; <motm@yahoogroups.com>
> Sent: Saturday, June 05, 2004 5:20 PM
> Subject: RE: [motm] Re: Time for an HPF!
> 
> 
> > > The JH5 has a Schaeffer panel? I didn't recognize it at
> > > such. Especially the graphics and fonts do not look
> > > 'engraved' as all, more like printed. How do you do that on
> > > a Schaeffer panel?
> >
> > I don't know for sure, but it looks like a Schaeffer panel to me, and I
> > thought that Paul told me in a phone conversation that JH uses Schaeffer
> for
> > his projects. Only JH knows for certain, of course. If it's not
> Schaeffer,
> > I'd certainly like to know how he did a one-off panel of that complexity
> and
> > detail.
> >
> > --Adam
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>

I thought a lot about the tick marks before I did my first Schaeffer panel.
Ultimately I realized that I don't really pay much attention to the tick
marks on my modules anyway, since I tune things by ear rather than by eye.
It would be a bigger issue if I wrote down my patches on paper so that I
could attempt to recreate them later, but I don't do this. So I settled for
putting marks at both extremes of travel, and one at the middle point.

I cheerfully buy Stooge panels when I can use them, but I've recently done
two MOTM conversions for which there are no Stooge panels, and my next
project will probably be an Expressionist breakout panel that doesn't fit
the MOTM standard. Beyond that I'm not sure what comes next. I have only 11U
of space left in my cabinet...

--Adam

> -----Original Message-----
> From: J. Larry Hendry [mailto:jlarryh@...]
> Sent: Saturday, June 05, 2004 11:12 AM
> To: adam@...; motm@yahoogroups.com
> Subject: Re: [motm] Re: Time for an HPF!
> 
> ----- Original Message -----
> From: Adam Schabtach <adam@...>
> I've become quite enamored with Schaeffer after having used their panels
> for
> for a couple of things that are outside of the Stooge Panel purview. If
> you
> don't require that all of your panels look exactly like MOTM panels, it's
> a
> wonderful service.
> 
> I too like the Schaeffer look of anodized and engraved.  I don't care for
> the Schaeffer panels that don't have pot tick marks though.  I know they
> add
> a lot of expense to the Schaeffer panel.  If it were not for the matching
> of
> Pauls finish (our # 1 goal) in panel appearance, Stooge panels would
> probably have been anodized and engraved.  Prodicuing the popular ones 20
> and 30 at a time woudl bring the price well down below a Schaeffer price.
> But, it was not to be.
> 
> I'm glad that we have Schaeffer option.  Having a general idea of how many
> are probably made that way, I know we coudl certainly not keep up with the
> demand of that AND what we are already doing.  On bog advantage is that
> one
> shop does eveything.  So, the delivery time is so much better tyhan what
> us
> poor Stooges can eek out.
> 
> Larry
> 
>

On Saturday 05 June 2004 19:11, J. Larry Hendry wrote:
> I too like the Schaeffer look of anodized and engraved.
> \ufffdI don't care for the Schaeffer panels that don't have
> pot tick marks though.

I really prefer the looks of the MOTM/Stooge panels. The 
paint and print just looks so sexy! For what it's worth, 
I'm only familiar with an Oakley EFG panel from Schaeffer.

And I fully agree with the tick marks, they are a must. I'm 
about to add tick marks to my Schaeffer P3 sequencer panel. 
That's 34 pots, and it will increase the panel's price with 
at least 60 euro/dollar I guess. But it will look much more 
MOTM in the end.

- Robert

On Saturday 05 June 2004 19:59, Adam Schabtach wrote:
> I have only 11U of space left in my cabinet...

That normally translates to something like "I'll have tons 
of space left in my next cabinet..." ;)

- Robert

--- In motm@yahoogroups.com, "Adam Schabtach" <adam@s...> wrote:
> ...Beyond that I'm not sure what comes next. I have only 11U
> of space left in my cabinet...
> 
> --Adam

More cabinets, of course! :-)

Barry S.

> Invert the output of your LPF and mix it in equal proportions to the
original signal. The lowpass'd signal will cancel out the low portions of
the "dry" leaving higher frequencies.

... but only at zero resonance.

JH.

>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>

> > I have only 11U of space left in my cabinet...
> 
> That normally translates to something like "I'll have tons
> of space left in my next cabinet..." ;)

Well, see, it's 11U in what *was* the "next cabinet". Current constraints of
physical space effectively prevent me from adding another cabinet any time
in the near future. So I have to fill my 11U wisely.

--Adam