https://electro-music.com/forum/ https://electro-music.com/forum/viewtopic.php?p=456983#456983 I just came across these tutorials on Youtube and thought it might be
a nice tribute as well as for other people to see.

I've been going to a local Synth meetup (mostly modular) for a year now.
A few of the members have some of Rob's modules lik ... cappy2112 Wed, 30 Apr 2025 17:19:35 -0700 https://electro-music.com/forum/viewtopic.php?p=451606#451606 The Retroverb generates all sounds and reverbs. The VCF LFO is used to modulate Fc as well. The Audio output of the Retroverb acts as data input for a CD4517BE 8 Bit shift register. The clock is 1/16 notes from CV OCD, with MIDI Monotribe as master c ... zaphod betamax Sun, 10 Apr 2022 10:21:46 -0700 https://electro-music.com/forum/viewtopic.php?p=451537#451537 Hi all,
I was wondering whether a schematic of this filter was ever published.
I'd love to see the implementation details of such a nice sounding filter/resonator.. belzrebuth Sun, 27 Mar 2022 05:11:25 -0700 https://electro-music.com/forum/viewtopic.php?p=449784#449784 Hi there, a friend built a Benjolin at a synthplex show DIY fest but it doesn't work. Specifically OSC2 is dead asked me to fix it.

It appears to be this:

https://synthplex.com/store/index.php?route=product/product&product_id=66.

From resear ... cslammy Tue, 20 Jul 2021 06:16:36 -0700 https://electro-music.com/forum/viewtopic.php?p=441452#441452 please add a link or picture to go with your question, that helps answering it. Grumble Tue, 20 Aug 2019 00:12:38 -0700 https://electro-music.com/forum/viewtopic.php?p=440841#440841 I believe it's Filter Control Voltage. So the CV for the Filter Cutoff. elmegil Sat, 29 Jun 2019 18:13:09 -0700 https://electro-music.com/forum/viewtopic.php?p=439701#439701 Check "loop mod" on this page:

https://web.archive.org/web/20150311234517/http://casperelectronics.com/rungle-mods/ elmegil Sat, 30 Mar 2019 15:49:36 -0700 https://electro-music.com/forum/viewtopic.php?p=434818#434818 Replaced the op amp and the bypass caps, just in case, and it seems a tiny tiny bit better (a little more range on the resonance pot) but still basically the same problem.

Considering just going ahead and replacing the other op amp used in the filt ... elmegil Wed, 16 May 2018 06:50:28 -0700 https://electro-music.com/forum/viewtopic.php?p=430487#430487 Hi there, I'm about to build my third Benjolin (I really love the circuit). However, I've just run out of 10k pots, but I have lots of 50k and 100k around here. Given that the pots in the schematic work as voltage dividers, can I simply substitute the ... Silesius Fri, 15 Sep 2017 04:23:46 -0700 https://electro-music.com/forum/viewtopic.php?p=428333#428333 I'm checking the board with the components and I have some questions:
what are the pots function names?? (from left to right)

Late reply but in case you are still wondering:

From Left to Right ( P4, P3, P2, P1 )

Input Level, Wet/Dry mix, ... gasboss775 Thu, 18 May 2017 06:32:36 -0700 https://electro-music.com/forum/viewtopic.php?p=427264#427264 Here is something really great that may not be noticed because it's hidden deep in another topic. It's a software version of the Benjolin. It runs in PD on almost any platform (not iOS though).



It's by one of our members, macumbista .

Che ... mosc Fri, 24 Mar 2017 11:42:32 -0700 https://electro-music.com/forum/viewtopic.php?p=425490#425490 Maybe you found this already, but the Epoch Modular Benjolin has the following measurements:

The filter outputs go from +2 to -2V, the triangle outs are ±4V, the rungler and XOR are ±5V, the pulses ±8V, and the PWM range is ±8.5V.

Source: ... macumbista Tue, 17 Jan 2017 09:37:23 -0700 https://electro-music.com/forum/viewtopic.php?p=422385#422385 This is a PCB I've been working on a little while now.

https://www.muffwiggler.com/forum/viewtopic.php?t=169179&highlight=

Rather than try to work it on two sites at the same time and having things get lost in the cracks, please make requests on ... elmegil Sun, 02 Oct 2016 19:02:59 -0700 https://electro-music.com/forum/viewtopic.php?p=420196#420196 I build serveral Benjolin last years for me and friends. It is a nice chaos generator and sounds good. Normally both VCO going to a comperator and it is not possible to get a "clean" VCO out.
I found an easy way to make it to a little synth with both ... soundworker Sat, 18 Jun 2016 01:23:00 -0700 https://electro-music.com/forum/viewtopic.php?p=419247#419247 Manufacturer is UTC, that could be the issue. Just wanted to post this in case someone else gets to that same, special WTF place in their build. macumbista Wed, 04 May 2016 07:46:14 -0700 https://electro-music.com/forum/viewtopic.php?p=417537#417537 Hello all,

This is my first video with a Benjolin audio track, I used an Echo Base Delay as well.

Rock Face Body

I take photographs of stuff I find near to where I live and where I live there are some old quarries. I love posing and making se ... JemRaid Fri, 26 Feb 2016 17:17:22 -0700 https://electro-music.com/forum/viewtopic.php?p=411166#411166 hopefully solved....

my usually very reliable resistor supplier sent me 10R resistors instead of 510R.... thorncore Sat, 06 Jun 2015 02:43:50 -0700 https://electro-music.com/forum/viewtopic.php?p=408954#408954 Another thing worth trying might be using the 4021 in parallel mode, and ´programming´ it with 8 switches?
Has anone tried it or is it just not possibe? L´Andratté Sun, 15 Mar 2015 13:43:03 -0700 https://electro-music.com/forum/viewtopic.php?p=408950#408950 A 9v regulator needs 12v input minimum (the doubler probably also)...
Of course you could use +/-9v unregulated to begin with but you would need supply decoupling caps (unregulated means much more ps ripple from the rectified ac supply), or use two 9 ... L´Andratté Sun, 15 Mar 2015 12:44:38 -0700 https://electro-music.com/forum/viewtopic.php?p=408948#408948 sorry no time atm to think about your problem
but his could be part of the issue
http://www.milton.arachsys.com/nj71/index.php?menu=2&submenu=2&subsubmenu=3
good luck L´Andratté Sun, 15 Mar 2015 12:34:57 -0700