Introducing ADDAC702 Dual Voltage Controlled Filter

New Interfaces for Analog Synthesizers.

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__ag
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Introducing ADDAC702 Dual Voltage Controlled Filter

Post by __ag » Tue Dec 09, 2014 7:59 am

Hello all,

Very glad to introduce this module to our ever growing line of products.

We have this one working for quite a while now but wanted to finish the first batch before announcing it, so here it is

ADDAC702 Dual Voltage Controlled Filter:
http://www.addacsystem.com/product/adda ... s/addac702

First limited batch is in stock, just email us at:
addac [at] addacsystem [dot] com


Features:

.Two independent filters, a High-Pass and a Low-Pass with dedicated audio inputs and outputs.

.Besides individual outputs the HP and LP are also sent to a voltage-controlled Mix between the HP and LP filters.

.Both Cutoff and Resonance are voltage-controlled with dedicated cv attenuator pots.

.Switch for selecting between normal cutoff behaviour and an adjustable Smooth circuit to simulate a vactrol behaviour for cutoff control.

.Switch for setting filters Filters in Parallel (independent) or Series (HP > LP).

.Inspired by the Oscar synthesizer we added a Coupling switch to tie the HP Cutoff control to the LP Cutoff control, in this case the LP cutoff controls act as an offset from HP setting.

.Three position switch selects different resonance clipping paths: diodes / no clipping / leds.


.Both filters features a post Distortion/Fuzz circuit that adds extra harmonics adds an even deeper growl or extra gritiness to it.

.All audio outputs (HP, Mix, LP) feature a switch for choosing phase output, allowing additive or subtractive mixes.

.Three Leds monitor the amplitude of the three outputs (HP, Mix, LP).


Image

modullos
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Post by modullos » Tue Dec 09, 2014 9:32 am

Nice :hyper:
Any audio demo?

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z0r
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Post by z0r » Tue Dec 09, 2014 9:55 am

Looks great. Would love to hear a demo.

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__ag
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Post by __ag » Tue Dec 09, 2014 10:15 am

Hello,
Hopefully we'll have one in a few weeks!
All the very best
Andre

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flo
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Post by flo » Wed Dec 10, 2014 8:29 am

:sb: :sb: :sb: :sb: :hail:

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Summa
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Post by Summa » Wed Dec 10, 2014 4:28 pm

what's the BP/NP and NP/BP outputs? BandpPass and Notch or what? anyways, looks stellar as always!


Bambou
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Re: Introducing ADDAC702 Dual Voltage Controlled Filter

Post by Bambou » Fri Dec 12, 2014 9:38 am

__ag wrote: .Switch for selecting between normal cutoff behaviour and an adjustable Smooth circuit to simulate a vactrol behaviour for cutoff
Does it mean it can be pinged with a triger like à Lpg ?

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jameswalk
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Post by jameswalk » Wed Dec 24, 2014 3:51 pm

Any word on demos? I'm keen to see how it compared to the intellijel one?

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__ag
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Post by __ag » Fri Feb 20, 2015 9:16 am

Hello all,

Here are the new videos for ADDAC702!

Part 1:
[video][/video]

Part 2:
[video][/video]

Part 3:
[video][/video]

Webpage:
http://www.addacsystem.com/product/adda ... s/addac702

tiny333
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Post by tiny333 » Mon Mar 16, 2015 2:26 pm

Please send me one !

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jarvis
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Post by jarvis » Mon Mar 16, 2015 3:23 pm

The range of the resonance knobs seems a bit narrow, both filters go into self-oscillation at just under 50% resonance. I'm curious what the reason was for this choice? Is there a way to provide more range before self oscillation?

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Post by tiny333 » Fri Mar 27, 2015 4:23 am

Hey jarvis

I thought that when looking at these vids but it doesnt really concern me now i have my hands on one. .... Its just very interactive ... The cuttoff and res interact alot... And the three way diode switch also changes things up alot.

Its a very very powerful and interesting filter

Fuzz is gooood

:tu:

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jvt
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Post by jvt » Fri Mar 27, 2015 6:18 am

I sent an email to ADDAC Systems regarding controlling the resonance behavior. Their response: "...the module features trimmers on the panel face that allow you to make this adjustment." That was all I needed to know! Now I'm on the waiting list for the next run. :yay:

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Post by Paranormal Patroler » Thu Nov 09, 2017 3:07 pm

I just saw this on YT and thought I'd post it here as well. This filter is on my list for sure. :mrgreen:

[video][/video]
All rights reserved; all wrongs reversed.

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Post by Eudox » Mon Nov 20, 2017 5:09 pm

I received this Filter a few days ago, and even if i haven't spent yet much time with it, i must say it meets all my expectations, and beyond.

In a sense the demos on Addac's page are very informative, but they don't give a proper idea of the musicality off this thing. Maybe they don't do it justice. And the "resonance pot" drama may have biased opinions : it's in no way a crushing non sensical filter.

Of course, the fuzz can bring any sound to a kind of angry rumble, but, much like an Analog heat, this fury can always be tamed, and underlines details in the source material.

The high resonance is not a problem : I haven't trimmed my pots and i'm very happy with the way they are for now (with the self resonance occurring around 12 o'c.). I guess it's just the way to always have at your disposal a huge palette of harmonics to be added on top of your playing.

The resonance peaks can be remove easily, but when they're here, they always seem to sing their own songs, on top of the rest.

You have to try it to feel it, inside a patch. It's really tactile and physical, because each routings or diode clipping sculpts the sound in a new and dynamic way.

I tend to see the 601 Filterbank as very "horizontal" filter : you draw the audio spectre with vertical resonating bands : the sound is large or thin, moving at the frontiers of the frequencies, or right in front in the middle range.

The 702 is much more "vertical", with thick layers of sounds that comes on top of each others... You can go up or down in the stacks : from dark distorsion to pulsating high peaks, dive deep or rush to the surface...

Pairing the two makes a fascinating canvas of timbres! At least for me.

Anyway i'm not sure if this prose is really pleasant and informative. I'm just a french living in Italy with a poor english... And maybe all my metaphors can't beat a proper demo vids. So sorry for it!

I felt like, for one time, i should tell what i feel about a module, instead of reading your comments!

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Post by ADDAC System » Tue Nov 21, 2017 3:14 pm

Eudox wrote:I Anyway i'm not sure if this prose is really pleasant and informative. I'm just a french living in Italy with a poor english... And maybe all my metaphors can't beat a proper demo vids. So sorry for it!

I felt like, for one time, i should tell what i feel about a module, instead of reading your comments!
Your praise is like singing in my ears! Much appreciated. :love: :oops: :banana:
Questions? Assistance? Hit me up via PM or send us an email!

ADDAC System | [www.addacsystem.com]

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