Kit Review # 10 - Erica Synths Multimode VCF
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- čas přidán 23. 07. 2017
- In depth review of Erica Synths' new 3320 based Voltage Controlled Filter for Eurorack!
Get yours here: ericasynths.lv/en/shop/diy/diy...
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/ quincas
Video and Music by Quincas Moreira - Hudba
Literally was looking for a demo vid of the multi vcf today. Thanks!
I was a few hours late for the launch :) Enjoy!
Nice kit review, I really enjoyed the groovy demo at the end.
Thanks!
Ha! And one more erica module moves to the top of my buy list. At first it sounds like I expected, but there's so much to find in there!
Another fantastic demo from Quincas reminds me that what's missing from my own modular setup is musicianship.
Thanks man :)
Did you hear the shout out (whispered) to you in the end ? ;)
of course! The surprise reminded me of the end of Bowie's Diamond Dogs, where for some reason he ends the album by shouting BRIAN! That song still terrifies me.
Quincas, Ud. esta DEMASIADO DIVERTIDO! You're Too Much FUN! Brilliant filter - thanks for the demo.
Thanks Dave :)
Thank YOU for all the entertaining information.
Damn, that sounds AWESOME!
I agree! Love Erica's stuff :)
Nice video. Apparently the only one for this module...
Nice Job. An instructional improvement of the video would be to take a few seconds of showing the populated board (one at a time) so we can stop the video and compare our own build to yours.
Thanks! Normally such pictures are already available in the manufacturer's build guides (as in this case) but I'll make sure to do it when that's not the case :)
Great video. The only thing I was left wondering... how is the tracking when self-oscillating? I like using my filters as sine wave generators... :)
Hi David! You're right I should have done that! The thing is, this filter doesn't quite oscillate unless you send it some positive CV into the resonance CV input. i just sent it an offset from the 0 coast and got a nice solid sine, but the tracking is about a half step per octave flat. I think if you amplify your cv slightly you should be able to get a couple of octaves in tune!
Hey Quincas, I just built one of these and I'm wondering if your HP output is as wild as mine? It is the easiest to self oscillate and I'm getting some distortion depending on Cut-off setting.
Please let me know. I couldn't find anything online about the HP output that's why I'm asking. I know it's been a while since you posted this. Thanks in advance!
Hi Gabe! No, my HP output behaves like the others, no more distortion or self oscillation. Sounds like you may have a wrong resistor in there somewhere! Good luck :)
Did you solder the resistors on both sides of the pcb? Why? I did only on the bottom side and it works.
I solder resistors from the top. On plated through hole PCBs that is possible and spares me from having to turn the board around, bend the leads out so they wont fall and then stick my iron into a forest of leads. Once I've soldered and trimmed i may touch up the soldering from below if i see some spots needing more or less solder
Hi Quincas! How steep is the cut-off of this filter in bandpass mode? Looking at maybe getting a couple of these to power a "poor man's vocoder" and need a steepish response. Thanks!
Hi! It's a 24db/oct filter. I just listened to a saw through it in bandpass and it sounds pretty steep to me! However, a proper vocoder would need at least about 8 input filters and 8 output filters, I would seriously recommend you get a dedicated vocoder project, or use a digital alternative! MFOS and Jurgen Haible have great vocoder designs. MFOS is available at Synthcube, and Haible at Random Source. Good luck!
Synth Diy Guy I was planning on multitracking the vocoder bands one by one instead of doing it in realtime. I'll definitely check out what's at Synthcube though. Thanks!
great thanks... what Joystick module is this?
czcams.com/video/CgLb4suiD9Q/video.html
hay can it resonate 1v/octave?
It's a little bit shy of an octave on mine. I can get over 2 octaves tracking if I amplify the CV slightly.
Great build. I was expecting the resonance to kick in much earlier than at 90%...what do you think?
I think it's about right, you shouldn't get self oscillation too soon on the reso knob ;)
@@QuincasMoreira My memory might have been tainted by a rather unruly Harvestman Polivoks version of that filter. Erica one seems a bit more civilized.
@@piotr803 Ah, but this is not the Polivoks! That's a different video ;)
This one is the 3320 based
Synth Diy Guy 🔥doh!
Those drums are FIRE... what did you use? #SICKBEATS
Will there be a "Black Multimode VCF" preassembled version?
Gotta ask the guys from Riga! Possibly?
Do you know if there are any drawbacks in the DIY versions? I am new to this and am kind of in between buying assembled and starting the DIY thing from scratch
No drawbacks if you build them correctly!
Thanks for the quick response!
Is there a reason to solder resistors from top of the PCB?
yes, it's much easier and quicker :)
Quincas Moreira Ah i see. Thanks, i might try in the future.
over the last few months i have spent about 1500€ on diy kits. only 7 of 15 modules are working propperly although i have doublechecked everything.
i can't find any solderbridges or wrong oriented parts, none of the components are heating up when plugged in, however i have noticed the +-12v leds of my distroboard are dimming when i plug in any broken module. also the other working modules in my case produce a lot of static noise when i plug the broken ones into the psu.
i know that no one here can help me. i will have to spend hours on figuring out all of the little mistakes i've made to get those modules running.
Hey, it can be very frustrating, I know. Don't be disheartened. What you describe sounds to me like there is something wrong with the power in your non functional modules. Triple check the orientation of the ICs, more often than not that's the culprit. Also, check your power headers for shorts using a multimeter in continuity check mode.
Take one at a time as a project, look at the schematics, take your time. You learn much more from a module that doesn't work than from one that does immediately! Without troubleshooting this would be just paint by numbers :)
Good luck!
thanks for the support!
turned out my noise swash was working fine. and i also managed to get two euro serge modules running by resoldering all solderjoints. i think random*source and music thing modular use gold plated pads on their pcbs, which makes it hard to get solid connections.
great news! keep pressing on :)
darn i just built their polivoks vcf, would have much rather built one of these
Rusty Shackleford different flavors! The polivoks is very cool too ;)
just another vcf among many ?
Well, one with CV control of resonance and gain compensation for high res settings. Sounding great, based on a very special chip, and quite a looker.