namke
wonkystuff
electronics and sound, what's not to like?!
Posts: 686
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Post by namke on Sept 21, 2020 18:15:59 GMT
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Lugia
Wiki Editors
Ridiculously busy...ish.
Posts: 556 
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Post by Lugia on Sept 23, 2020 2:04:00 GMT
Groovy! Mine's going to wait for the "controller/mixer" cab, though...I want to use the mm33 as a global "adjust" for modulation signals, so that I can use thruput from it to globally screw with the overall patch results on the fly. The ability to sling mod signals around in a patch like the mm33 can pull off is invaluable for that trickery.
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Post by slowscape on Sept 23, 2020 2:11:21 GMT
Mods!? This could get fun.
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Post by admin on Sept 24, 2020 5:57:28 GMT
Yay! I got the package today! Wasn't too long a wait, all things considered, now I know what to do on the weekend!
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Post by admin on Sept 24, 2020 6:05:14 GMT
So looking at this mods page ... would it be possible to have x = 1gain, y = 3gain and z = 5gain? And if so, is this advisable? And what would you do with this? Would it add distortion or something? Can I blow my system with something that's coming out of the 5 gain output? I know how to solder, but it's just like Lego for me, I really have no clue whatsoever about the electronics! |
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namke
wonkystuff
electronics and sound, what's not to like?!
Posts: 686
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Post by namke on Sept 24, 2020 7:25:44 GMT
So looking at this mods page ... would it be possible to have x = 1gain, y = 3gain and z = 5gain? And if so, is this advisable? And what would you do with this? Would it add distortion or something? Can I blow my system with something that's coming out of the 5 gain output? I know how to solder, but it's just like Lego for me, I really have no clue whatsoever about the electronics! Yes, you could do that – each of the channels are independent. The maximum output is still 5v, so there’s not going to be any ‘extra’ available, so you won’t blow anything up, but you might find that you can dial in distortion as you mentioned. Different gains might be useful I suppose but be aware that if a 0-5v signal is input, and the channel gain is 5 then only 20% of the pot’s rotation will be usable before clipping occurs… I should add that to the page  Of course intermediate resistor values will give intermediate gains; it’s not limited to those values |
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Post by admin on Sept 29, 2020 14:36:58 GMT
Phew ... this took a few days, but I've completed the introduction, build and how to use video for the mm33 namke, I hope I did your awesome module justice! |
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namke
wonkystuff
electronics and sound, what's not to like?!
Posts: 686
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Post by namke on Sept 29, 2020 16:36:51 GMT
Amazing work — thank you! Wonkystuff definitely have a high bar to reach when we start doing build videos! Thanks so much admin |
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Post by rockysmalls on Sept 29, 2020 16:49:21 GMT
Amazing work — thank you! Wonkystuff definitely have a high bar to reach when we start doing build videos! Thanks so much admin hi John,, just sent you a private email... Carstens video has cemented a slight suspicion i had that my MM33 ( prebuilt ) is not actually working according to spec.. no clean feedback tone can be achieved .. just a clicking pulse generally.. could it be the IC?? hilariously i have made hours of recordings with it this way.. |
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namke
wonkystuff
electronics and sound, what's not to like?!
Posts: 686
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Post by namke on Sept 29, 2020 18:16:08 GMT
rockysmalls (I emailed this already, but thought I’d post my last email for others to see): Thinking about it without an ‘oh shit!’ mindset, I think that this is to be expected actually: a direct patch cord from output to input through the small amount of gain in the mm33 will create a positive feedback loop that basically turns into an oscillator. The period of the oscillation depends on the capacitors and also the resistance in the circuit (so the frequency can be changed by twiddling the other knobs even though there’s no input signal to those channels. I don’t think anything will have broken, and I am reasonably happy that — although not by design — this is just a side-effect of the amplification of the circuit. I think that feedback loops will have to go through some kind of delay at least to be able to match Carsten’s sounds… Is that any help?!
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Lugia
Wiki Editors
Ridiculously busy...ish.
Posts: 556
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Post by Lugia on Sept 29, 2020 18:43:02 GMT
rockysmalls (I emailed this already, but thought I’d post my last email for others to see): Thinking about it without an ‘oh shit!’ mindset, I think that this is to be expected actually: a direct patch cord from output to input through the small amount of gain in the mm33 will create a positive feedback loop that basically turns into an oscillator. The period of the oscillation depends on the capacitors and also the resistance in the circuit (so the frequency can be changed by twiddling the other knobs even though there’s no input signal to those channels. I don’t think anything will have broken, and I am reasonably happy that — although not by design — this is just a side-effect of the amplification of the circuit. !!!!! The mm33 can also self-oscillate...sort of!? Even MORE abuse potential! 
EDIT: And I should find out soon just what that self-oscillation sounds like. There was a little gray parcel from the UK in the box this afternoon...  |
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Post by Morn Valley on Nov 23, 2020 7:34:52 GMT
Thanks very much to all the people who have ordered — I have some busy time building ahead. I hope to get most of the orders out by the end of the week… I’ve just re-implemented the web shop, so I hope it still works! PayPal can now be avoided if you’d rather not use it 🙂 Please let me know if there are any problems!! This is super exciting news! I'd love to order a kit quick question about difficulty. For context, I've successfully soldered several entry DIY kits at this point (e.g. Bastle Kastle/Tea-Kick, MTM mikrophonie) but royally screwed up a Dreadbox Antiphon which has made me allergic to DIY for a while now. Do you think this kit is safe treading?! As someone who also built the Antiphon I also had massive issues with this kit due to it having a massive ground plane on the board which would dissipate the heat, I had to reflow most of the pads that were connected to ground and had a right nightmare with it. I've built a ton of kits and make my own stuff regularly but this one was a right pain. I reckon you'd be good with this kit, you were not alone in struggling with the Antiphon. |
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morgs
Junior Member
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Post by morgs on Nov 23, 2020 22:10:47 GMT
This is super exciting news! I'd love to order a kit quick question about difficulty. For context, I've successfully soldered several entry DIY kits at this point (e.g. Bastle Kastle/Tea-Kick, MTM mikrophonie) but royally screwed up a Dreadbox Antiphon which has made me allergic to DIY for a while now. Do you think this kit is safe treading?! As someone who also built the Antiphon I also had massive issues with this kit due to it having a massive ground plane on the board which would dissipate the heat, I had to reflow most of the pads that were connected to ground and had a right nightmare with it. I've built a ton of kits and make my own stuff regularly but this one was a right pain. I reckon you'd be good with this kit, you were not alone in struggling with the Antiphon. Thanks for sharing @morn Valley that makes me feel a little better. I was so excited by the prospect of an eight-sine drone set up but the experience was traumatic (and expensive!). I never got to the bottom of what I did wrong but now you've shed some light on it! In case all were in suspense, soldering the matrix mixer was easy peasy and helped me get my DIY confidence back :) |
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Post by Morn Valley on Nov 24, 2020 15:49:15 GMT
As someone who also built the Antiphon I also had massive issues with this kit due to it having a massive ground plane on the board which would dissipate the heat, I had to reflow most of the pads that were connected to ground and had a right nightmare with it. I've built a ton of kits and make my own stuff regularly but this one was a right pain. I reckon you'd be good with this kit, you were not alone in struggling with the Antiphon. Thanks for sharing @morn Valley that makes me feel a little better. I was so excited by the prospect of an eight-sine drone set up but the experience was traumatic (and expensive!). I never got to the bottom of what I did wrong but now you've shed some light on it! In case all were in suspense, soldering the matrix mixer was easy peasy and helped me get my DIY confidence back Glad you've jumped back in and your build was a success! Yes I upped the temp on my iron which was not advised on the Antiphon build doc due to potentially melting the sliders. All the issues I had were ground pins on those slide pots if that helps in any way. |
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mm33 mods on wonkystuff.net
