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 Forum index » DIY Hardware and Software » Jürgen Haible designs
36dB/Oct Lowpass VCF
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Wed May 13, 2009 11:31 pm    Post subject: 36dB/Oct Lowpass VCF Reply with quote  Mark this post and the followings unread

My Varislope Filter/Phaser can be used as a powerfull (IMO) 36dB/Oct Lowpass filter. (6-pole filter)

I've made a demo to show this:
http://www.jhaible.de/varislope_filter_phaser/living_vcos_thru_36dB_varislope.mp3

I thinks it's both "fat" sounding, and you can get some unusual sounds out of it as well.

I started another thread, because I want to get enough orders for this project to go into production. Smile

The full-fledged Varislope Filter / Phaser has a huge number of components (200 Resistors alone!) because of the complex on-board modulation. But if you only want a powerfull VCF, you don't need all these extra components. I'll make a component overlay for a partly populated PCB, just for filter applications. This won't be a complex project anymore then. And it may make a good VCF to go along with the Living VCOs. Smile

http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser.html

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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TekniK



Joined: Aug 10, 2008
Posts: 1062

PostPosted: Thu May 14, 2009 12:00 am    Post subject: Reply with quote  Mark this post and the followings unread

on your site:
Unique on-board LFO with volzage controlled waveform-crossfading

Wink

Juergen can we use 13700 on this?
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JoeMorris



Joined: Apr 26, 2009
Posts: 160
Location: Brighton

PostPosted: Thu May 14, 2009 1:08 am    Post subject: Reply with quote  Mark this post and the followings unread

interested in one!
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The Bad Producer



Joined: Mar 08, 2009
Posts: 257
Location: The Manhole

PostPosted: Thu May 14, 2009 2:52 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi JH,

I'd be interested in several (as usual), in case you're collecting votes here's mine!

Charlie
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numbertalk



Joined: May 05, 2008
Posts: 980
Location: Austin, TX
Audio files: 5

PostPosted: Thu May 14, 2009 5:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Put me down for 1!

EDIT: Ok, twist my arm, put me down for 2 Smile

Last edited by numbertalk on Thu May 14, 2009 8:38 am; edited 1 time in total
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2thick4uni



Joined: Feb 20, 2009
Posts: 113
Location: UK

PostPosted: Thu May 14, 2009 6:53 am    Post subject: Reply with quote  Mark this post and the followings unread

One for me too Very Happy
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fluxmonkey



Joined: Jun 24, 2005
Posts: 696
Location: cleve

PostPosted: Thu May 14, 2009 7:15 am    Post subject: Reply with quote  Mark this post and the followings unread

even the full-fledged version doesnt look that overwhelming... 2 for me, please.

bbob

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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Thu May 14, 2009 8:34 am    Post subject: Reply with quote  Mark this post and the followings unread

TekniK wrote:
on your site:
Unique on-board LFO with volzage controlled waveform-crossfading

Wink

Juergen can we use 13700 on this?


Haha, that's why it is unique Embarassed

- yes, 13700 is fine.

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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TekniK



Joined: Aug 10, 2008
Posts: 1062

PostPosted: Thu May 14, 2009 9:25 am    Post subject: Reply with quote  Mark this post and the followings unread

i like the sound,huge potential into it imo

i take 2 pcb's when its availjaible!
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glacial23



Joined: Apr 30, 2008
Posts: 32
Location: Cleveland, OH

PostPosted: Thu May 14, 2009 11:13 am    Post subject: Reply with quote  Mark this post and the followings unread

I'd be interested in one.
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Thu May 14, 2009 11:31 am    Post subject: Reply with quote  Mark this post and the followings unread

Here's the component overlay for the Lowpass only:
http://www.jhaible.de/varislope_filter_phaser/36dB_LPF_only_components.pdf

(that's still a variable slope filter with resionance and 36dB/Oct fatness - just without th eLFO and the phaser.)

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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TekniK



Joined: Aug 10, 2008
Posts: 1062

PostPosted: Fri May 15, 2009 12:20 am    Post subject: Reply with quote  Mark this post and the followings unread

what would be cool is an pcb project with a couple of lfo based like this one

-variable morph waveoutput with volzage controlled waveform
-freq cv control
-individual wave out
-reset
-sync
maybe a build in delay (like the lfo of the 100M)
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Funky40



Joined: Sep 24, 2005
Posts: 875
Location: Swiss
Audio files: 1
G2 patch files: 5

PostPosted: Fri May 15, 2009 11:17 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm in, i think for two.


I'm just bringing my Haible Backlog down, so i can stock up again Laughing
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jaidee



Joined: Oct 28, 2007
Posts: 43
Location: Newcastle upon Tyne, UK

PostPosted: Sat May 16, 2009 3:46 pm    Post subject: Reply with quote  Mark this post and the followings unread

One for me!
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Sun May 17, 2009 12:26 am    Post subject: Reply with quote  Mark this post and the followings unread

Based on the interest you all have shown so far, I think I can send out order forms some time next week.

Then, if I get enough binding orders within two weeks or so, I'll get these boards manufactured.

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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wicked1



Joined: Apr 24, 2009
Posts: 14
Location: stl

PostPosted: Sun May 17, 2009 8:03 am    Post subject: Reply with quote  Mark this post and the followings unread

I want one! Probably 2, actually. (already sent you an email last month from the sdiy list about it)

Can't wait! It's the last piece I need for a new little synth i'm building.
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mono-poly



Joined: Jul 07, 2004
Posts: 935
Location: Rotterdam, Netherlands
Audio files: 2

PostPosted: Sun May 17, 2009 10:48 am    Post subject: Reply with quote  Mark this post and the followings unread

Great Juergen!
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2thick4uni



Joined: Feb 20, 2009
Posts: 113
Location: UK

PostPosted: Mon May 18, 2009 4:09 pm    Post subject: Reply with quote  Mark this post and the followings unread

Put me down for 2 pcb's please
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Mon May 18, 2009 11:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

Pre-order for 36dB VCF and Variable Slope Filter/Phaser project

(See http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser.html
for details about the project.)

Pricing is EUR 27.00 per board
plus a single EUR 6.00 shipping flat charge for worldwide shipping,
regardless how many boards you are ordering and where you live.
It does *not* include any customs fees or tax that you may (or may not) have
to pay in your county.

What you get is a double-sided printed circuit board with component overlay,
approx. size 160mm x 100mmm.

You have to buy the electronic components for this, and build the device,
yourself. (Check the above website regularly for updates and building hints,
bill of matrials etc.)

If you want to place a pre-order, please send me an email (no PM or forum message!)

and use the FOLLOWING FORM (fill in your data instead of [],
for instance: "2 Boards" instead of "[quantity] Boards")

===== Start of Email Order Form ===============

Email Subject line: 36dB Varislope order: [quantity] boards

Email text:

I'm ordering [quantity] pieces of the 36dB VCF and Variable Slope Filter/Phaser PCB
for EUR 27.00 per board + EUR 6.00 single shipping flat charge for any
number of boards.
I'm aware that I may have to pay additional amounts of customs and tax in my
country.

I'm aware that I'm only buying blank PCBs that may help me building an
electonic module - I'm *not* buying a diy kit, not a "project" - just pieces
of FR4 with copper traces.
I know how to build electronic circuits and I am trained in electrical safety matters.
The seller of these PCBs will not be held responsible for any damage that results
from these PCBs, directly or indirectly.

My shipping adress is

[Your Name]
[Your street, number, city, ZIP code, in exactly the form
that is generally used in your country]
[your country]

My paypal adress is [your paypal adress].

I===== End of Email Order Form =========

Looking forward to hear fom you Smile

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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frenchyinmunich



Joined: Jun 23, 2009
Posts: 105
Location: Germany

PostPosted: Tue Jun 23, 2009 9:39 pm    Post subject: Comments and wishes for extension and front panel Reply with quote  Mark this post and the followings unread

Hi all,

Well, I am heare as for sure, i find the VCF great.
I just ordered the components from Reichelt.
Well, with the poties, it costs 80 Euro.

Juergen, it would be great if on your list you add as well the poties and switches and audio sockets.
angel angel

As like you know I am hurry to mount it, I didn't optimized the cost of the componenets.

The analog switches are availables at Bürklin for around 1 euro.
Which means, the kit complete cost 90 euro without the PCB and front panel.

Now, I would to add the features to get the S&H and LFO midi synchronized.

And, I would be delighted to get some pictures of some front panel event if its only in a electronic format.

Thanks for the nice work Juergen.

C.U.

Francois
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softfin



Joined: Oct 11, 2006
Posts: 264
Location: Far in the north
Audio files: 1

PostPosted: Wed Jun 24, 2009 2:55 am    Post subject: Reply with quote  Mark this post and the followings unread

Is it still possible to order boards for this project?
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TekniK



Joined: Aug 10, 2008
Posts: 1062

PostPosted: Wed Jun 24, 2009 3:32 am    Post subject: Re: Comments and wishes for extension and front panel Reply with quote  Mark this post and the followings unread

frenchyinmunich wrote:
Hi all,

The analog switches are availables at Bürklin for around 1 euro.
Which means, ..
C.U.

Francois


Which means you cannot buy there as a private person.
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frenchyinmunich



Joined: Jun 23, 2009
Posts: 105
Location: Germany

PostPosted: Wed Jun 24, 2009 8:57 am    Post subject: Re: Comments and wishes for extension and front panel Reply with quote  Mark this post and the followings unread

TekniK wrote:
frenchyinmunich wrote:
Hi all,

The analog switches are availables at Bürklin for around 1 euro.
Which means, ..
C.U.

Francois


Which means you cannot buy there as a private person.


Good evening,

Which means you don't know what are you speaking about.

For your information, I buy very frequently components from brüklin.
It is always pleasant to get a nice first mail from a forum. Sade that yours didn't start with "hello" and ended with "best regards".

It seems that you are not so pleased as well about the fact that it is possible to get the DG419 from that provider. For your information, Juergen asked directly to give a precise cost a the components package.
May be it is more that your problem...


Best regards,

F
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Wed Jun 24, 2009 11:45 am    Post subject: Reply with quote  Mark this post and the followings unread

sigh

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Wed Jun 24, 2009 11:46 am    Post subject: Reply with quote  Mark this post and the followings unread

softfin wrote:
Is it still possible to order boards for this project?


Yes, looking forward to receive your order!

JH.

_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
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