It looks really great and very well designed. A simple, but brilliant idea. To my ears, it sounds very much like a Serge Res Eq feedback patch through a Spring reverb. It’s 1 patch in a box. A very good patch, but one I can already make, with what i have, and one that many people can make and get similar results with an outboard mixer with eq, spring tank and aux send. I maybe wrong, but there’s not that many 10 band Resonant EQ’s about. The Serge Res Eq is 10 bands and designed and built with feedback patching in mind and i just wonder if that’s what’s inside.

http://sdiy.info/wiki/CGS_Serge_resonant_equalizer
http://www.thonk.co.uk/shop/serge-res-eq-kit/

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I am unsure if the eq in the Fjaerlett is really resonant in nature, the webpage mentions a graphic eq and I wonder if you could really fit a resonant eq in such a considerable small and also price wise affordable package. SMD parts and all that can really help getting stuff small, maybe I also missed something in this thread.
Apart from that I really feel like what has already been said:
It makes me happy to see how successful this thing is, I hope someday to see one for real. However, I am also happy to have a few possibilities in Eurorack etc. to cook something “similar” up in the meantime to bridge the 2 or 4 years waiting time.
In the end, for me personally I feel that an experimental idea contained in a fixed architecture can sometimes be really more attractive than all possibilities all the time. The Tilde Elektriske Fjaerlett is probably to spring feedback patching what the Wing Pinger is to pinging, I am quite excited about both as it is two things I really enjoy.

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Good morning!

  1. Has anyone learned whether the TEF has a stereo or mono output?

  2. I wonder whether the coils would pick up sympathetic vibrations from a small radio or other air-moving music source? Obvs you can bonk and plonk it, but do you think more subtle movements (perhaps even a small fan) would be interesting? These questions stem from my Complete Lack of Experience with such devices, so your feedback is deeply appreciated, as always.

Four years… the cynic in me sees these showing up for sale at double list price so other people can make money off of this creator / machine. Hopefully he can use the response to hire some help. I think it’s a lovely box.

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Five years now. Sadly that kind of opportunist resale mark-up often seems the way of these scenarios, much like early bird tiers on Kickstarter.

My best guess, he makes a dozen or so of these, gets bored or overwhelmed, moves on to something else.

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It will be mono

No reason for it not to. And will probably be way more interesting than just bashing the springs manually. I’ve always like the idea of playing the springs physically much more than the results I’ve got. Subtle its not.

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I’d like to think that the size of the backlog would be a strong indicator to the creator that some help would be a good idea. Backlogs have a habit of going dry when left to linger for too long.

Honestly what he needs to do is raise the price. He could sell it for 7 or 8, that would cut the orders back to a reasonable wait time and still leave room for the early birds to list on reverb for 1k.

Looks like a simple, good looking, nice sounding, playable instrument. Someone could enjoy it for at least a year before cycling it on to the next owner.

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That’s a fair point maybe it’s not resonant and the Res Eq is fairly expensive on parts. You can get $35 10 band guitar pedals and 10 band graphic eq PCB’s. The PCB’s are $12 on eBay and they are stereo - 5v - 15v.

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True, the smaller tank seems to be more playable in regards to this set up.

Looks like this could be it, nice find.

This is a er301 custom unit I made today. It’s a 15 band eq with a spring reverb in the feedback loop. The faderbank is assigned to each band. The isms case has built in ins / outs specifically for a spring reverb which honestly, I have rarely used. I took the ins / outs into the er301 through the custom eq. The eq was made by chaining 5 x EQ3 units in serial and I tuned each one so they are had similar numbers to the front panel of a Res Eq. It’s not perfect, it needs fine tuning, but was more a proof of concept.

Heres the updated er301 patch to download - i posted on the er301 forum http://forum.orthogonaldevices.com/t/custom-unit-spring-feedback-loop-based-on-tilde-elektriske-fjaerlett/4602/2

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Whenever someone says the ER 301 is expensive, I tell them how much it saved me from hunting other eurorack modules. It needs a set of good controllers like a 16n and maybe some gates next to it but that pretty much keeps me happy, I think your ER 301 videos show that point as well. :slight_smile:

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Yes for sure, it’s saved me at least buying 12u of modules to cover what it can do. It’s things like this, were it earns every penny. Saying that you can probably do this with a Music Thing Graphic EQ and Spring.

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Thanks for the proof of concept @mlogger, I’m keen to try this with the ER 301 but haven’t yet.

Feels weird to share my own work but it is on topic…two reverb tanks in the discussed patch (one shaped by the Res EQ the other with Fumana). I’m also using a harmonic Oscillator to affect one of the spring tanks at times. We set 234hz as reference point and the organ is tuned to a meantone variation with this as the fundamental.

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(For the record I love it when people share their work here)

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Just received a nice email from Kristoffer Gard Osen, saying a bit about how he is dealing with the queue of requests- and how he will get in touch when people are the next in line. Interestingly he also adds:

Some have asked for customizations and mods to the Fjærlett and I can say now that as a general rule I won’t be doing big structural mods and customizations. Small stuff like e.g change the led colour is of course possible. However, there will be an option for those of you who want an input jack

sounds good I think…

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Best news I’ve heard all week… is it 2024 yet?

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Wow, this sounds great and I like the minimal 80s B&O styling. I have a Moisturizer, which is also an awesome beast with a few more features, but something about that simplicity and the graphic eq rather a filter really works well. Great (almost too great) price also!

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