Instruo I-ō47 / Instruo vs. ARP?

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Instruo I-ō47 / Instruo vs. ARP?

Post by boubi » Fri Oct 26, 2018 9:23 am

I-ō47 Multimode Resonator/filter

I had always felt there was something very ARP-ish to Instruo's creations - especially the dual / triple structure of some of their latest VCOs. Am I right to see more than a pun here, I-ō47 = 1047?

Other point in case: the CS-L is a rare instance of dual core VCO. A sawtooth core that resets a triangle core, that was the general idea in the circuit found in the ARP 2500's 1004 and 1023 VCOs...

Anyone here had the chance of comparing vintage ARP 2500 or clone thereof (!) and Instruo? I'm in the market to supplement my 2600 with more ARP VCO and VCF clones and/or modules sharing that philosophy/circuitry typology, and don't want to make my mind lightly.
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Post by bc3 » Fri Oct 26, 2018 9:53 am

I've worked with Jason on a few custom modules and in our discussions I believe I recall him mentioning that he met an ARP designer on a trip to the Boston area a while ago. I think he mentioned be interested in doing some ARP type circuit designs.

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Post by boubi » Fri Oct 26, 2018 9:59 am

A proclivity I am willing to encourage 8-)
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Dogma
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Post by Dogma » Fri Oct 26, 2018 2:44 pm

i love this dudes modules - such a nice fella too
what is this? Ive not seen nor heard about it - need info!
look up!

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Post by flashheart » Fri Oct 26, 2018 3:56 pm

Looking at the image I'm sure it's based on (or even a clone of) the ARP 1047 filter - http://www.guitarfool.com/ARP2500/1047.html
I'm not buying a maths though, not my idea of fun...

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Post by boubi » Fri Oct 26, 2018 4:01 pm

I am a lucky owner of CMS's 1047e clone and have played the 2500 twice. Considering the scarcity of the CMS clone, it would be awesome news if this one was derived from this circuit too.

More info soon I hope. Spotted it on Modulargrid and will likely contact Instruo next week for details.
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Post by boubi » Fri Oct 26, 2018 4:32 pm

Had I done my research, answer is in the following article: it's a 1047 clone with clever tricks.

https://www.gearnews.com/superbooth-201 ... w-modules/

Now to find the quids. [/url]
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Post by Dogma » Fri Oct 26, 2018 11:35 pm

boubi wrote:Had I done my research, answer is in the following article: it's a 1047 clone with clever tricks.

https://www.gearnews.com/superbooth-201 ... w-modules/

Now to find the quids. [/url]
Thanks for that ! i swear i couldnt find anything...

for those who are on a phone or whatever

I-ó47

A multimode filter based on the ARP 2500 1047 resonant filter. Instruó have added a variable notch filter with CV control. You get outputs on all four modes. The main input has a gain control and limiter built-in. This will push a triangle into a sort of S-shaped curve or give a sense of fattening to more complex signals. The secondary input inverts the signal and is responsive to the resonance. The resonance can push it into stable self-oscillation and there’s a 1volt/oct and FM input with attenuation.
look up!

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Post by srogers » Wed Nov 07, 2018 11:08 am

Anyone have one of these yet? I can still see them on the website via the link but it looks to be unlisted otherwise.

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Post by boubi » Wed Nov 07, 2018 1:02 pm

Bumping too.
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Post by bgcriswell » Wed Nov 07, 2018 3:38 pm

I have one. It’s quite nice. :)

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by chaosick » Wed Nov 07, 2018 4:21 pm

boubi wrote:I-ō47 Multimode Resonator/filter

I had always felt there was something very ARP-ish to Instruo's creations - especially the dual / triple structure of some of their latest VCOs. Am I right to see more than a pun here, I-ō47 = 1047?

Other point in case: the CS-L is a rare instance of dual core VCO. A sawtooth core that resets a triangle core, that was the general idea in the circuit found in the ARP 2500's 1004 and 1023 VCOs...

Anyone here had the chance of comparing vintage ARP 2500 or clone thereof (!) and Instruo? I'm in the market to supplement my 2600 with more ARP VCO and VCF clones and/or modules sharing that philosophy/circuitry typology, and don't want to make my mind lightly.
That's very interesting. To me, the ARP 2600 is one of the all time classic instruments, and the ARP 2500 looks exponentially amazing, though I'll probably never see one in person. I basically built an ARP2600/Minimoog into my eurp via AJH Synth and AM Synths, among other things, and have a Cs-L..so it's interesting to hear how my own intuitions and preferences seem to have found their way into the hearts of what I tend towards, even though I hadn't even realized it!

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Post by chaosick » Wed Nov 07, 2018 4:24 pm

Dogma wrote:
boubi wrote:Had I done my research, answer is in the following article: it's a 1047 clone with clever tricks.

https://www.gearnews.com/superbooth-201 ... w-modules/

Now to find the quids. [/url]
Thanks for that ! i swear i couldnt find anything...

for those who are on a phone or whatever

I-ó47

A multimode filter based on the ARP 2500 1047 resonant filter. Instruó have added a variable notch filter with CV control. You get outputs on all four modes. The main input has a gain control and limiter built-in. This will push a triangle into a sort of S-shaped curve or give a sense of fattening to more complex signals. The secondary input inverts the signal and is responsive to the resonance. The resonance can push it into stable self-oscillation and there’s a 1volt/oct and FM input with attenuation.
I saw the Neonach at SB18 and it looks killer..have enough filters but can always use more complex versatile controllers.

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Post by McRINdk » Thu Nov 08, 2018 5:42 am

Jason demonstrated this (pre production) when I was lucky enough to visit the Instruo nerve center in Aug. He told me the story of going to meet an original ARP designer and he showed me the original ARP filter (somewhat dusty and kicking around in his bottom drawer). So yes very strongly ARP with the usual Instruo twists and polish.

Yes I'm tempted but will have wait until the 18U DIY case is finished.

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Post by boubi » Thu Nov 08, 2018 12:59 pm

bgcriswell wrote:I have one. It’s quite nice. :)
You little tease! Soooooouuuuund please :hihi:
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Post by boubi » Thu Nov 08, 2018 1:00 pm

I saw the Neonach at SB18 and it looks killer..have enough filters but can always use more complex versatile controllers.
Somewhat reminiscent of the ARP 1050 mix sequencer - with more features. Interested in that too!
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Post by boubi » Thu Nov 08, 2018 1:03 pm

Thanks for the first-hand information, McRINdk. It always comes handy to have old 2500 modules tucked away in a drawer
:mrgreen:
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Post by Ears » Sun Mar 17, 2019 2:47 pm

I finally got mine. It sounds great. I don’t do demo vids but this is worth a leap of faith.

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Post by tdel » Sat Jul 13, 2019 1:11 pm

Are there really no audio demos of this to be had anywhere?

Could someone possibly be so kind as to make one? Very intrigued. I love my new CS-L dearly and am very much an Instruo fan now.

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by combathook » Fri Feb 14, 2020 11:14 am

I've recently picked up a i-o47 so I can offer my two cents.

In my short time with it so far it's different than what I was expecting. I heard ARP and assumed the 2500 filter was similar to the 2600 filter, but I suppose that was incorrect. Certainly a more wild and mysterious filter than a traditional ladder or sem filter. The curve can be unpredictable depending on the resonance/feedback/modulation settings, so you have to be careful about your levels. Mine is also prone to blasting out piercing resonance under certain circumstances, but I don't know if that's a malfunction. A lot of the response depends on what you are feeding into it, so you'll have those "is this thing broken or am I patching it wrong?" moments.

However, the sweet spots are very nice. One thing I use it for is to add thumping low end and body to drum loops, almost like a compressor. I also like using the Planar with it to make sci-fi sound effects. Where it really shines is audio rate modulation and pinging. Amazing vocal sounds and complex oscillator type percussive tones. Sometimes I forget that it's a filter.
It is also a very functional sound source/oscillator for sequences.

So not so much an east-coast, straight mono synth style filter in my opinion, due to the aggressive resonance making filter sweeps unpredictable. But it makes a great experimental filter and sound sculpting tool. It reminds me about how people talk about the Synthi.

I'm excited to try the Cs-L now.

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by droningspaghettimonster » Fri Feb 14, 2020 12:25 pm

demos sure would be nice... :hihi:

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by bedhed3000 » Fri Feb 14, 2020 1:26 pm

droningspaghettimonster wrote:
Fri Feb 14, 2020 12:25 pm
demos sure would be nice... :hihi:

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by combathook » Fri Feb 14, 2020 8:54 pm

I’ll put something up soon.

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by combathook » Fri Feb 21, 2020 10:36 am

Here's a little bit. This is all self resonance being modulated by an external oscillator/LFO plus some reverb to bring out the tails.

https://soundcloud.com/account/io47/s-CbkDj

I can probably do better but I wanted to get something up, and the sweet spots are tricky to find sometimes.

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Re: Instruo I-ō47 / Instruo vs. ARP?

Post by synonymist » Fri Feb 21, 2020 10:48 am

combathook wrote:
Fri Feb 21, 2020 10:36 am
Sometimes I forget that it's a filter.
Bingo. :) That's exactly how the STEFFCORP VCF-12 is for me.
combathook wrote:
Fri Feb 21, 2020 10:36 am
Here's a little bit. This is all self resonance being modulated by an external oscillator/LFO plus some reverb to bring out the tails.

https://soundcloud.com/account/io47/s-CbkDj

I can probably do better but I wanted to get something up, and the sweet spots are tricky to find sometimes.
That was lovely. Thank you!

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