Thank you! It's like this thing is designed to be hacked/modded/bent. Plenty of room, easy access, and even big giant mounting holes to put standoffs on either side so you can run and hack on the whole thing while it's out of the case. Love it! It even looks like it's a simple two layer board so we can drill holes anywhere we can find an opening. I hope the RD-6 is built in the same manner!

The Schmitt triggers are for the oscillators. The TL074's are output op amps. The other op amps are likely used for saw to square wave conversion (both as audio oscillator and the clock to the sequencer), buffers, and inverters. The shift registers are used for sequencer clock subdivisions. The ARM processor is basically the same as those used in Arduino and Teensy controllers, the CPU brains for this device and the EEPROM is program memory. The 5 pin white connector seems to make this possible to use with Eurorack. The stuff over by the power entry is mostly MIDI since all the power conversion is done in the wall wart. It is a computer control analog synth with MIDI. All the pieces make sense to me.

@jc4359

Жыл бұрын

Thank you for such an in depth comment, I'm a current electronics engineering student interested in learning how to create and modify these circuits in the future. I want to make my musically inclined digital electronics teacher proud, and ARM processors are on the list after the summer for me to dive into!

@SamiJumppanen

Жыл бұрын

Square > saw? (without seeing the whole video yet), Roland did that in Juno-106. Integrator. Downside is the need for amplitude control related to the frequency. Juno did that control voltage by the voice board CPU, so it minimized the electronics. Well. I don't know about TD-3, yet :)

- the 5 holes near the MCU looks like a FTDI connector for programming the MCU - the resonance pot looks like the same stereo-potentiometer used in regular TB-303's (oc a newer one and not that old 16mm ones) - the powerswitch got only 3 pins, so it would not be a problem to change it to a whatever-you-like-switch. Just mount the new one somewhere into the case and wire it up (piece of cake ;) - the barrelconnector could be got more strenght if you put some extra solder onto its 3 pins to resist the force while inserting the jack and so will hold a much longer time the first thing i'll modify on my unit when its arrived are the LEDs. They tend to be 0603 SMD LEDs and i think they have to be multicolor all over the board :D thx for the great video, man! :)

@ChrisPileggi

4 жыл бұрын

Was thinking about modding the LEDs but I was hoping they were 3mm... And yes, this thing screams multi color! The power LED is already dual color.

@zo1dberg

3 жыл бұрын

Would any debugging info come out of that FTDI port?

Thank you very much for making this video!!!

That coating on the board is conformal coating. It just helps protect the components from environmental damage. Pretty standard, but it would have been an added expense on such a cheap unit so it's nice to see.

bright yellow circuit board! Nice touch...

If Behringer sees that, your warranty is gone. Anyway, a nice view is that. Thank You for that! 👌

I'm pretty sure the resonance pot is just a different type of potentiometer compared to the others. I'm not really familiar with the internals of synths in general, but usually inverse logarythmic potentiometers are used for resonance controls.

Cool, I was curious if they used CoolAudio chips for the VCO like in the Crave and MS-1.

this is how a teardown should be done!

@quantizedcontrols5860

2 жыл бұрын

Cheers man now I need some free time to take more stuff apart

I like this.

That residue you see is similar to solder flux, but it is likely from a "no clean" solder that is normally used in fast, large batch production. The residue is not conductive like a conventional solder flux residue, so it does not need to be cleaned unless clean boards are a priority.

Hello. You still doing this? It was really nice to watch. If you're still up to it, I would love to watch Behringer Edge being opened

From the pic I was about to ask where he got a yellow one 3 weeks ago lol

Always interesting to see digital logic chips used for analogue - used to confuse people as to whether the synth was digital or not. Same thing on my Clef Microsynth I built in 1985.

i found the buttons and knobs are stupid cheap in terms of quality. the first one i had the step button broke with in the same month i got it and the knobs by the cutoff became loose and seemed slightly detuned. i was overly careful with it. behringer sent me a new one in exchange for the old one free of charge (which was awesome), sadly a note button on the new one became somewhat unresponsive roughly a few weeks afterward. i miss the old one because i had this pattern that if played at a low speed with certain settings, would produce this awesome, deep, fluctuating drone. i tried reproducing the sound with the new one and am always so close.

Turn your tunes up at the end!!

I got a printed manual with mine. (Silver version, bought december 2020)

Please make one with Td3-MO

Mine just stopped working today. I'm pretty bummed about it. Nothing happened. Didn't fall or get dropped. I had it working yesterday , was hooked up to my iPad via midi interface. Today I fired it up and nothing. Tried different cables. The software detected it but no sound no matter what I do.

Are you going to do some Devil Fish / Maffiz type mods to your TD-3? :)

I have an odd issue with my unit. I dont get any kind of sound until I turn on Distortion. When I do, I mainly get white noise, but I also get very faint tones when I press the note keys. I'd imagine that places the problem piece somewhere before that, but I couldn't begin to guess which it is. Any ideas? I can provide more info if need be.

Would you happen to know what the resonance pot is? Mine has become scratchy.

I want to buy Behringer Devilfish clone, are they too cheap to be good, do they end up going wrong with dodgy solder joints and cheap pots and switches? Some people seem to say this, what's the general opinion. They sound fantastic it must be said.

Tried to do this to go in and address a malfunctioning B note (7) key. Unfortunately, could not get any of the knobs off... Think they may be gluing them on, now-a-days.

@JH-lo9ut

3 жыл бұрын

That is pure evil, if they really glue the knobs in place. I managed to remove my knobs. They were not glued on, but pretty tight. Just note that the knobs have a collar that is countersunk into the plastic surface of the chassis. This makes it so that you tend to push against the collar of the knob itself rather than the chassis when you try to pull them out. Be careful though, I don't want you to break anything. I had to remove the tuning knob, because I got sick of accidental de-tuning while tweaking the knobs.

How kind of knob is the resonance trimmer? In my TD3 make some scratch noise when i Turn... maybe I have to change it.

@quantizedcontrols5860

4 жыл бұрын

I have no idea what the value is for that knob. If it's scratchy when it's brand new that's bad. I would email Behringer about it. If you want to replace it, when you de-solder it, it will have a label on the underside with a value or part number and you can replace it that way. Just be sure to measure and match the width and length of the shaft using millimeters.

@AlexFainDj

4 жыл бұрын

Quantized Controls I sent it back for assistance

@szymeklawik7636

4 жыл бұрын

Yes!!! Mine does that too. And crackles & pops at around 2 o clock!!!

@haolekoa737

4 жыл бұрын

Same problem here... No noise if I turn it slowly, but lots of scratches & pops if I turn it quickly. Looks like a fairly common problem.

@RoXx1811

3 жыл бұрын

They definitely fixed the inital problems people had with their units. Mine works absolutely flawless so far :) - What a bang for the buck

My TD3 in black arrived today and I have to send it back already. The resonance pot crackles and suddenly pops at about 2 O'Clock and is loose compared to the other pots. Shame as it sounds great.

@richardkoncol

4 жыл бұрын

Szymek Lawik mate my black TD3 arrived today and has a problem with F# key not working properly (rather you have to find the "right" position to make it work instead of clicking it normally). guess there's an easy fix for it but i'm not a techy person so I'll have to send it back probably.

@szymeklawik7636

4 жыл бұрын

@@richardkoncol I still haven't had the opportunity to send mine off as Thomann said they were not dealing with any returns till Covid 19 blows over. As I can live with the issue for now I'll send mine back at a later date. Sorry to hear about yours. I guess you get what you pay for. Thomann will just swap it over no questions

@TMmusic08

3 жыл бұрын

@@richardkoncol I had the same issue

@kirabarsmith9353

3 жыл бұрын

I have the same issue too. If anyone knows a fix, please share.

@szymeklawik7636

3 жыл бұрын

@@kirabarsmith9353 I thinks it's just a quality control issue. I had two. One had the issue. I sold them both now

Why the blue gloves?

could be to be euroracked as far as the 5 pin

Excellent video and analysis, thank you 👍😆 Can't believe they didn't even wash the board after it went thru the soldering machine !! 😕 Pretty typical Behringer ultra low budget build.... SIGH This really is the Golden Age of cheap electronic music. Between Behringers ripoffs of classic gear, Korgs Volca range, stupid cheap MIDI controllers and 100 small manufacturers & Kickstarters, there's never been a better time to buy hardware !! You might want to try a lapel mic with a filter to improve your audio just a little 😉

@quantizedcontrols5860

2 жыл бұрын

Thank you for the kind words. Lapel mic it is... soon

27:58 - thats the only problem I have with the unit - it wobbles on the table...

@Whaever_1981

4 жыл бұрын

Frustrating but I assume you know that you can easily solve that issue yourself ;)

@kylekeller7577

3 жыл бұрын

I have this too. I thought my table was warped

@zo1dberg

3 жыл бұрын

@@Whaever_1981 How did you fix it?

@JH-lo9ut

3 жыл бұрын

@@zo1dberg add some extra rubber pads underneath it. You can buy them at an electronics supply store. There is also this thin foam rubber mesh that is used to prevent stuff from sliding around. You can put it under carpets or in the bottom of drawers, or under your synths! I found this at a crafts/fabrics store, cheap as dirt.

@SXTransmission

Жыл бұрын

I put some of that lightweight non slip rubbery matting from the hardware barn or office supplies under mine. You could probably try loosening / tightening (not too much as the video says), which might change it a bit

Hi! I just saw your video and am a bit at a loss for info on what to do with mine... Couldn't find my powersupply so I used a universal one and despite the switch saying 9v on it I later found out that it was actually putting out 17v...obviously malfunctioning. Needles to say the unit did not start up and now doesnt show any signs of life... Any idea which components to look at and how to test the thing. I've narrowed down the power supply with the schematics on the board but am a bit stuck now on how to figure out which component is fried. Any help at all would be huge! Thx a lot!!!

@quantizedcontrols5860

Жыл бұрын

Have not seen this on the TD but sometimes it's as simple as this: one of the elements of the power circuit may have melted its own solder joint. And sometimes simply re-soldering its legs will get you up and running. Look in the upper left corner to start, look for black or loose solder joints.

is it an 18db filter like the original TB-303?

@meme_0

3 жыл бұрын

tb303 is 24db

ARGH why is Behringer using the GD32 and not the official STM32? Probably to cut cost by a margin of cents per unit. That's probably handling the MIDI and such.

@quantizedcontrols5860

4 жыл бұрын

Honestly I didn't know the difference but I do like finding this out. Is the GD32 just a little faster/newer and a smaller package?

@MrChildren87

3 жыл бұрын

It’s probably more that they “know a guy” in Shenzhen or maybe their factory neighbors the GD32 foundry so they get em cheap. Honestly, unless you need the high precision and bulletproof development of a proper STM, I don’t have a problem with someone using a clone to run a step sequencer if it makes it easier for me to get my hands on some Acid Techno...

any sites for patterns?

@sisterzzbro4215

4 жыл бұрын

I want it too 👆

Is that just a camera or does it actually find the pot for you? Where can I buy one?

@quantizedcontrols5860

4 жыл бұрын

That is just a very cheapo USB microscope from Banggood, I think. I edited out the parts where I was googling the part numbers, so it looks more magic than it is. I think this is the same one: www.ebay.com/itm/2MP-USB-Digital-Microscope-500x-8-LED-Video-Camera-Stand-Webcam-Magnifier-Loupe/163607818694

Can the CPU be modded to have a realtime step seq?

@MrChildren87

3 жыл бұрын

Probably, but you’d have to decompile it and study the ARM assembler code to figure out what does what. The M3 is super super overpowered for this application, so if behringer open-sourced their MCU code there’d be legions of benders and hackers writing their mods for them. Lololol

@lars-fenin

2 жыл бұрын

@@MrChildren87 noice...

Lovely video but HELL THAT REVERB makes it hard to make up what you're saying

@quantizedcontrols5860

4 жыл бұрын

Haha sorry, the reverb on the vocals or on the background?

@quantizedcontrols5860

4 жыл бұрын

Ah damn I hear it now all of the sudden I can't hear anything else

@Rprth

4 жыл бұрын

You should use a close mike, anyway i liked the video nevertheless !

@christschin3708

4 жыл бұрын

No it doesn’t.

@markbennett4316

3 жыл бұрын

Should have flipped it to distortion mode instead.

You found all the least interesting semis on the board lol... all the important stuff is the matched transistor pairs and how they subbed in for the original transistors and OTA

@quantizedcontrols5860

4 жыл бұрын

Yeah good point I will do some research and try again

So the TB 303 is only for taking drugs? I won't give your electronic music collection the time of day.

@justinbeck4197

3 жыл бұрын

well at 27 mins you look like you know something about these

@lundsweden

3 жыл бұрын

The TB-303 & TD3 makes you feel as if you are on drugs, without the health & legal risks ;-)

@karlmeadows4986

Жыл бұрын

It was originally made to replace the bass guitarist in a band but obviously didn't sound anything like a bass guitar, in the documentary pump up the volume they recon the roland tb303 was originally made for a karaoke machine, so it could of been a voice tuner, the 1st lot of 303, s that landed in America got dumped into the second hand market really fast because they sounded terrible, djs started picking them up for next to nothing to advance there music but couldn't programme them because the instructions where in Japanese, dj pier made acid trax just by pure luck ,

i hate it when people whit a rubber clove and a wooden stick complain about a cheap produckt,(clone)complain about the paint on the inside???hahahasorry,spend more money for a rolland,3time s the money of this thing

@knuftobor

Жыл бұрын

I do not think he was complaining. It was an observation.

no menual???mmm,not at mine,no web site or tool for produckt???mmm not at mine, 150,- ???not mine it was 110,-euro s,so for the price good item ,for me.

it is normal that it not like as the roland,??this is a cheap clone, and for the price it funktionality is fine,so make your not ridicules,and buy a rolland for370,- box.ps for the people that can think on a reality way,u can buy it becos it works fine,the midi works fine,this .....complain about the painting from the inside???this thing cost 110,- box, so???

wieder kostbare 30 minuten verschwendet ! Teardown heisst doch absturz oder das ein problem mit der platine besteht . jetzt weiss ich aber wenigstens wie man einen schraubenzieher und akkuschrauber verwendet .😑🙈

@PercivalThe23

3 жыл бұрын

besser englisch lernen!😆