Nice demo, and good to get a good sound comparison no diffrence to my ear and if there was i guess its minisculy negligible. What makes or breaks an oscillators sound in my opinion is down to the attached components and a synths filter. Im very close on employing these badboys to my project .
I'm surprised no one here seemed to notice the attack on the newer chips is slightly delayed. The middle to upper register is quite obvious, especially the pulse wave on single notes.
Hi, One question.. does the auto tune works perfectly with the cem3340 version g replacement ? I heard that is not with ob-xa and some modifications on voice card got to be made.. Have you heard about it ? Ob8 is a beautifull instrument, what are the main differences with the ob-xa ? Regards, Paulo
Are these the same chips used in the newer DSI Prophet 6 and OB-6? I notice DSI says they use discrete VCOs but i'm not sure discrete means discrete anymore and it may be just marketing. The Black Corportation Kijmii and Deckards Dream are using the 3340 reissue as well as the Neutron. I wonder if the Prophet 08 Rev 2 is using the same DCO chips as the Deepmind.
Discrete means that they are not using Integrated Circuits (chips) like the CEM 3340. The new OBX8 synth has discrete (non-IC) VCOs and a choice of either discrete or CEM 3320 filters per voice.
They don't sound the same to me although close: the original ones have a superposed harmonic variation apparent with the chord sequence whereas the new ones don't have this and appear quite 'stable' and perhaps less engaging. Secondly, I also hear a difference in the upper registers - there seems to be an odd thing happening pitch-wise in the highest notes with the new ones.
Thanks for the info, Gregory. So, the only difference I can make out is that little variation apparent with chords. I'd like to hear a comparison with the Cool Audio v3340 but can't find any on YT.
If i remember right that is what Behringer is going to use those chips in their clone if ever comes to light. Which as big of a response as they are getting to the current set of clones that are coming out, I am pretty damn certain they will debut it next year.
@@SHUTUPYAFACE Could you please give me some info about that? I noticed this thing on a couple of voices on my OB-8 too, altough not as dramatic as happens in yours. I already did a complete restoration of my Oberheim, I entirely recapped the voice and CPU boards, changed all the CMOS switching stuff and op-amps with new fresh components (thanks god all the ICs are socketed) on the voice boards, performed a full calibration and the synth is working fine, I'd just want to iron out this little quirk.
mima14031985 well, all I can say is the pitch thing is more noticeable with the new cems. I haven’t had a chance to get to the bottom of it, but suspect it could be from replacing certain buffered cmos chips with new ones that are not up to the same rating. The ob8 was my very first repair endeavour when I started out years ago and I also swapped out a bunch of chips... when I do get back to it and try to figure it out I’ll update you. Might be awhile though since I have a stack of other things to fix first.
Hi Greg, many thanks for the test -- which one is the left side and which one right side of the knob? It sounds very similar, but right side of the knob sounds more rich to me - Not sure which one is which --- title says New vs. Old and description Old vs. New ;) cheers!
Great comparison! Sound the same to me. I had one rev G installed a few months ago for troubleshooting, and it pissed off autotune. Have had any issues with the rev gs like that?
@@SHUTUPYAFACE didn’t try that, but it turned out that the problem wasn’t with the 3340 anyway, it was a flaky single turn trimmer. Put the original 3340 back in and all was good.
In the patch demo section, starting at 2:00 it sounds to me that the new chips might have better intonation, could be as simple as calibration differences, however..
If the new 3340 chip has a different topology or thermal stability factors the intonation can be affected due to drift (or lack of). This is not due to variations in the control signal, and if it were, this would present a problem to any chip equally. My comment is based on the patch at 2:00 sounding much "fatter" (i.e. less in tune) with the original CEM3340.
Still disagree; my Prophet-600 shows a similar behaviour with the new chips, not the old ones! And, it actually has a problem related to the internal controlling (it's been serviced right now).
Thank you so much sir! I was digging in the muffwiggler forum and found a few post in there about rumors of newly available chips but it was looking like maybe this was just vaporware. Sure wish they had a more traditional distribution network but I sure appreciate your help thanks again.
Vintage USA Tech I literally just emailed Susan at onchip who sent me a PayPal invoice... shipping took a couple weeks but showed up without any issues
Nice I think that's the rout im going to take as well, I found some at a site called synthcube for $15 bucks I think they are in Massachusetts do you know if ON Chip in the US or if they in china or else where?
Pretty identical. But not surprising considering they're most probably made from the same original masks.
Thanks for the demo.
WOW - amazing that you did this. Thank you for taking the time. I can't believe I just came across this video
Thanks- can’t believe it’s already been 5 years since I made it! Where does the time go.
Sound like the real thing to me! Thanks for doing this.
Sounds identical! Great news..thanks
great demo and very interesting comparison, pretty much identical
Sounds gorgeous either way
At aroung 00:35 I could hear just a slight extra harmonic in voices 1-4, the rest is pretty much identical to me. Very good news.
Nice demo, and good to get a good sound comparison no diffrence to my ear and if there was i guess its minisculy negligible. What makes or breaks an oscillators sound in my opinion is down to the attached components and a synths filter. Im very close on employing these badboys to my project .
I installed Rev G chips in my OB-8. 100% identical. It would be nice if they started producing 3320 and 3310 again.
I'm surprised no one here seemed to notice the attack on the newer chips is slightly delayed. The middle to upper register is quite obvious, especially the pulse wave on single notes.
Define “attack”. Are you talking about the slight portamento? I’m pretty sure I have an issue in my cmos.
I hear no difference, they sound very good...!
Perfect.
Hi,
One question.. does the auto tune works perfectly with the cem3340 version g replacement ?
I heard that is not with ob-xa and some modifications on voice card got to be made..
Have you heard about it ?
Ob8 is a beautifull instrument, what are the main differences with the ob-xa ?
Regards,
Paulo
Way to go
YES!!
Are these the same chips used in the newer DSI Prophet 6 and OB-6? I notice DSI says they use discrete VCOs but i'm not sure discrete means discrete anymore and it may be just marketing. The Black Corportation Kijmii and Deckards Dream are using the 3340 reissue as well as the Neutron. I wonder if the Prophet 08 Rev 2 is using the same DCO chips as the Deepmind.
Discrete means that they are not using Integrated Circuits (chips) like the CEM 3340. The new OBX8 synth has discrete (non-IC) VCOs and a choice of either discrete or CEM 3320 filters per voice.
They don't sound the same to me although close: the original ones have a superposed harmonic variation apparent with the chord sequence whereas the new ones don't have this and appear quite 'stable' and perhaps less engaging. Secondly, I also hear a difference in the upper registers - there seems to be an odd thing happening pitch-wise in the highest notes with the new ones.
yashnu that pitch thing is a latch problem in my ob8. The portamento isn't closing all the way.
Thanks for the info, Gregory. So, the only difference I can make out is that little variation apparent with chords. I'd like to hear a comparison with the Cool Audio v3340 but can't find any on YT.
If i remember right that is what Behringer is going to use those chips in their clone if ever comes to light. Which as big of a response as they are getting to the current set of clones that are coming out, I am pretty damn certain they will debut it next year.
@@SHUTUPYAFACE Could you please give me some info about that? I noticed this thing on a couple of voices on my OB-8 too, altough not as dramatic as happens in yours. I already did a complete restoration of my Oberheim, I entirely recapped the voice and CPU boards, changed all the CMOS switching stuff and op-amps with new fresh components (thanks god all the ICs are socketed) on the voice boards, performed a full calibration and the synth is working fine, I'd just want to iron out this little quirk.
mima14031985 well, all I can say is the pitch thing is more noticeable with the new cems. I haven’t had a chance to get to the bottom of it, but suspect it could be from replacing certain buffered cmos chips with new ones that are not up to the same rating. The ob8 was my very first repair endeavour when I started out years ago and I also swapped out a bunch of chips... when I do get back to it and try to figure it out I’ll update you. Might be awhile though since I have a stack of other things to fix first.
Is knob left original vintage VCOs versus knob right reissue VCO?
Knob right = new
Hi Greg, many thanks for the test -- which one is the left side and which one right side of the knob? It sounds very similar, but right side of the knob sounds more rich to me - Not sure which one is which --- title says New vs. Old and description Old vs. New ;) cheers!
Vit Sedlacek the right side is the new chip.
Gregory Cox many thanks! :)
Good news!
Maybe with oscilloscope and audio spectrum analyzer you can find some differences but no my ears.
ears are a FAR more sophisticated and discerning tool than scopes... i'd go with the ears as judge any day ...
antigen4 along with placebo effect your ears will do great :)
Wrong.
Sounds identical to me.
Great comparison! Sound the same to me. I had one rev G installed a few months ago for troubleshooting, and it pissed off autotune. Have had any issues with the rev gs like that?
Which synth did you use it in?
@@SHUTUPYAFACE OB8
@@obwanz1921 does the autotune issue follow the cem if you put it into another voice?
@@SHUTUPYAFACE didn’t try that, but it turned out that the problem wasn’t with the 3340 anyway, it was a flaky single turn trimmer. Put the original 3340 back in and all was good.
@@SHUTUPYAFACE Also, with the rev G, autotune would slow down on this voice, and sometimes fail it, but most of the time it would pass.
In the patch demo section, starting at 2:00 it sounds to me that the new chips might have better intonation, could be as simple as calibration differences, however..
Intonation depends on the control signal, not the CEM3340 itself.
If the new 3340 chip has a different topology or thermal stability factors the intonation can be affected due to drift (or lack of). This is not due to variations in the control signal, and if it were, this would present a problem to any chip equally. My comment is based on the patch at 2:00 sounding much "fatter" (i.e. less in tune) with the original CEM3340.
Totally agree, I noticed that too. The new chip sounds more in tune.
Still disagree; my Prophet-600 shows a similar behaviour with the new chips, not the old ones! And, it actually has a problem related to the internal controlling (it's been serviced right now).
You disagree that it could be calibration differences or that in this demo the "new" chips sound more in tune?
funny thing, the new one sounds very Xpander
Where did you order the chip from I have searched the world over with google and still not turned up who is selling this chip.
Vintage USA Tech - search google for onchip cem3340. There's more info here: www.muffwiggler.com/forum/viewtopic.php?p=2249931
Thank you so much sir! I was digging in the muffwiggler forum and found a few post in there about rumors of newly available chips but it was looking like maybe this was just vaporware. Sure wish they had a more traditional distribution network but I sure appreciate your help thanks again.
Vintage USA Tech I literally just emailed Susan at onchip who sent me a PayPal invoice... shipping took a couple weeks but showed up without any issues
Nice I think that's the rout im going to take as well, I found some at a site called synthcube for $15 bucks I think they are in Massachusetts do you know if ON Chip in the US or if they in china or else where?