This worked perfectly for me. My brand new Odyssey had weird pitch issues on VCO 2. I followed your instructions, and when I was trying to adjust VCO 2 it was behaving weird, like sometimes I would turn the potentiometer and the tuning would not change, then it would suddenly adjust by 100Hz all in one go. I figured it was dirty contacts and turned it back and forth about 20 times and after that it worked fine. I guess the dirty potentiometer explains why it wasn't calibrated properly in the factory. Thanks for your video - much easier to follow along than read the calibration guide!

@tukler2

2 жыл бұрын

I'm happy to to hear that! Thank you for your feedback. :-)

thank you! explained nicely

Thanks! My current Bodyssey seems fine, but this is good to know! Subscribed :)

How are you connecting the alligator clips to the test probe? I'm looking to purchase a digital scope for calibrating some of my modules, but am confused how to interface my gear with the probes. Thanks for this video!

@tukler2

3 жыл бұрын

I've soldered two wires with alligator clips to an ordinary tele-plug the line out jack. An easier way (if you don't allready have one made) would to use just a bare plug and connect the probes directly to the plugs connections.

Thank you so much for this vid! I don’t have an oscilloscope. Do you think I could do this with a software tuner, using for example abletons tuner?

@tukler2

3 жыл бұрын

Yes a software tuner will work just fine, but sometimes they struggle with the really low frequencies.

@itsdrawkcab5899

3 жыл бұрын

@@tukler2 thanks!

I just picked one of these up and will probably check scaling. Is there a digital oscilloscope you can recommend? Thanks!

@tukler2

2 жыл бұрын

Any digital oscilloscope with two channels would probably work. I'd prefer a bench top scope. There's also a lot of second hand ones out there that could be a bargain compared to buying a new one.

great video, thanks -do you have any idea how to calibrate the transpose switch? mine now plays perfectly with the switch in the middle but is very out of tune two octaves down

@tukler2

Ай бұрын

No, not really. It should be related to the overall scaling of the synth. Have you done the pitch and scaling calibration like in this video? And have you checked the voltages like in my other video?

@victoriajakeman

Ай бұрын

@@tukler2 yes, done all the voltages, vco offset etc

@tukler2

Ай бұрын

@@victoriajakeman This is from the original Arp Odyssey's Service manual page 7 (dl.lojinx.com/analoghell/ArpOdyssey-ServiceManual.pdf). I haven't found any Behringer Schematics, but hopefully it's similar to the original. 2.1.4. TRANSPOSE SWITCH Half of the transpose switch is connected to the bottom end of the resistor chain to, in effect, add two or four octaves worth of resistance (about 1200 or 2400 ohms) to the resistor chain. This raises the control voltage level supplied to the CV memory. The following chart summarizes the CV output for low 'C' and high 'C' on the keyboard for each of the transpose switch positions: TRANSPOSE SWITCH: DOWN 2 OCT. NORMAL UP 2 OCT. LOW 'C' OV +2 V +4 V HIGH 'C' +3 V +5 V +7 V The remaining half of the transpose switch compensates the second voice control voltage for the difference in the resistor chain resistance.

Hello, could you do some tutorial on a Yamaha DX-7? A few of my buttons/switches are beginning to fail (Mainly Button 1, 6 need more pressure while 25 is dead.) Also my Output jack is loose itself which causes the audio to be intermittent.

@tukler2

3 жыл бұрын

Arpmuless Sounds like the faults should be easy to fix on your DX7, try to find a synth tech nearby. I would do a tutorial if I only had a DX7, but I haven’t touch one for the last 25 years. If you decide to do the fix yourself, take lots of pictures when you take it apart and label all your cables. Practice your soldering skills on something else before you start on your synth. The output jack just needs some fresh solder. I’d replace all switches, even the working ones. Good luck!

@arpmuless_official

3 жыл бұрын

@@tukler2 Thanks for the lighting fast reply, that's a pity you dont have one, it's a Very underated synth. The output jack will be an easy fix, I've done work on it before. The buttons however, can I just use a contact spray in them?

@tukler2

3 жыл бұрын

No, it won"t work. The buttons are sealed and worn out. I'd replace them.

Would I have to do this right out of the box or is this the procedure if/when it eventually falls out of tune?

@tukler2

2 жыл бұрын

There is no need to do it unless the pitch, tuning and scaling starts to bother you.

@IsshmanGarcia

2 жыл бұрын

@@tukler2 thanks

@petert8507

5 ай бұрын

Wouldn’t this be done in the factory?

@tukler2

5 ай бұрын

Yes, it's done at the factory. But mechanical, environmental factors and time could make the calibration to drift to the point that it's necessary to do a new calibration.

I could never find the Service Manual for this Unit, if anyone can give me a link or place where I can get it would be appreciated !

@tukler2

2 ай бұрын

I'd love to get the Behringer one too, I've only got a copy of the original Arp service manual.

@EmperorKonstantine01

2 ай бұрын

@@tukler2exactly, same here. I went as far as to ask behringer and community groups of behringer but they have no idea as well. I have never ever come across a unit without a complete service manual. No idea what logic part no. chips they have installed, mainly they used surface mount components which don’t even have markings, it oblivious to tech service and I don’t know where to start from. The pcb and the design is shocking, the only solid thing on this unit is the keyboard and case everything inside is cost reduced and uses aroun more then 10’different part manufacturers.

Surely this is done in the factory before they send them out?

@tukler2

2 ай бұрын

Yes, it's done at the factory. And there's no need to do it until the synth doesn't play in pitch. It could take years.

@petert8507

2 ай бұрын

@@tukler2 they forgot to put the plug back it…. and it’s hard to find a replacement part so small.

@tukler2

2 ай бұрын

@@petert8507 Keep on looking, I hope you'll find one. I don't think it’s critical though.

@petert8507

Ай бұрын

@@tukler2 I’m just a bit OCD when it comes to things like this.