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2018-06-27 by XCVII
“The VC Waveform Processor A-116 is a very complex module, which, especially through the modulation of clipping level and symmetry parameters, can give any number of sometimes drastic waveform transformations.” Though it requires a scope in many instances and the user is required
2018-06-27 by Nicholas Keller
Are there stickers on the back of the cases that say the voltage and fuse type? It's possible that this PSU was converted to 115 after production, and the sticker may reflect that. It's easy to convert back and forth, you just need to change a few solder bridges and the fuse. Are
2018-06-26 by lerake@yahoo.co.in
Hello, In 1998 I bought two Doepfer suitcases, from Doug Wagner/Enport back when he was the US distributor, and just discovered that the power supply in one of them is marked as a 230V version -- see photo here: https://photos.app.goo.gl/eSkT4EjNN6vdPM7T7 The other is marked 115V
2018-06-25 by yahoo@doepfer.de
> one of my A-111-1 that I bought used exhibits a defect such that > when the position of the PWM control is advanced clockwise beyond > halfway, the VCO pitch increases about an octave- instead of the > rectangular output appropriately transitioning through the > remaining duty
2018-06-24 by Florian Anwander
Hello > instead of the rectangular output appropriately transitioning through the remaining > duty cycles down to zero. I am german, so my english is not perfect, but I admit, that I do not understand this sentence from grammar or content. What do you want to say? Florian
2018-06-24 by XCVII
one of my A-111-1 that I bought used exhibits a defect such that when the position of the PWM control is advanced clockwise beyond halfway, the VCO pitch increases about an octave- instead of the rectangular output appropriately transitioning through the remaining duty cycles dow
2018-06-20 by Diego Ragnini
Thank you, my knowledge on electricity and powering is so close to zero that I had to post an obvious question I will come back if interesting results will arise Best wishes > Il giorno 20 giu 2018, alle ore 09:58, yahoo@doepfer.de [Doepfer_a100] ha scritto: > > Yes, these are th
2018-06-20 by yahoo@doepfer.de
Yes, these are the correct terminals. If the GND connection really solves the problems one has to think about a permanent solution. But I have never heard about similar problems from other customers. And we use A-100P9 together with A-100LC3 during exhibitions or work shops and n
2018-06-20 by Diego Ragnini
Please can someone check that this would be the right connection in order to grant that the A-100LC3 “GND” is temporarily connected to mains earth/GND? So I would temporarily connect the blade terminal of the first picture to the same blade terminal found in the A-100P9 (2nd pict
2018-06-18 by yahoo@doepfer.de
Hello John, thank you for the information. We have the LT1014 in stock and I'll try it out. Best wishes Dieter Doepfer > -----Ursprüngliche Nachricht----- > Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] > Gesendet: Samstag, 16. Juni 2018 10:30 > An: Doep
2018-06-16 by John Hollis
Hi Dieter, I decided to try it and used the LT1014DN with an offset of 60uV. I now have 8 channels of pitch quantisation that track well. I would suggest it to anyone using multiple A-156 quantisers. The limitation now appears to be the integrity of the patch cabling. If all the
2018-06-14 by Diego Ragnini
Thanks a lot Dieter, I mentioned the LC6 for mistake in the object line, it simply is the LC3. I doubt that the problem source is the A-138s mixer, though its signal can be heard on the multed outs of the WMD buffered multiple. As soon as I come back in town, the first trial will
2018-06-13 by yahoo@doepfer.de
It's not for sure that this is the reason for your problems. So I'd recommend just to try it out, i.e. connect the GND of the A-100LC3 temporarily (e.g. the GND blade terminal on the A-100 bus board) to GND of the other devices included in the signal path. If you use an A-100LC6
2018-06-12 by Diego Ragnini
Ok thanks, so I have to learn how to ground it ! It seems obvious but not I will try Floating GND (?) needs to be deepened Or I’d better search for someone who can do it? > Il giorno 12 giu 2018, alle ore 15:57, yahoo@doepfer.de [Doepfer_a100] ha scritto: > > I fully agree. As th
2018-06-12 by yahoo@doepfer.de
I fully agree. As the A-100LC3 also uses an external power supply it's GND is not connected to mains earth/GND and has the mentioned "floating GND" (in contrast to all other A-100 cases). Best wishes Dieter Doepfer > Definitely get that case properly earthed first. Even if its no
2018-06-12 by Analog Monster
Definitely get that case properly earthed first. Even if its not causing this issue, its not safe for you or your equipment. There should be a both crimped and soldered lug on the metal case, held in good contact with a screw and washers which connects to earth. This probably can
2018-06-12 by Diego Ragnini
Florian thanks again for the help, as far as I can see there’s no pre-post “point” where the leak might occur. Each signal goes straight to its target and nowhere else. Audio 1 multed signal and A-138s mixer outs have separated channels (1 mono, 1 stereo) on the outboard mixer, s
2018-06-12 by Diego Ragnini
Thanks, the cables are all recent doepfer Not sure to know how to do this experiment though I will try. Which GND do you refer to? Just the one of the audio 2 (the source which feeds the A138s) or the multed audio 1 as well? Audio 2 is from a DPO mounted on a A-100P9 PSU3 Audio 1
2018-06-12 by Florian Anwander
Hello Diego Am 12.06.2018 um 15:01 schrieb Diego Ragnini diegora@free.fr [Doepfer_a100]: > > > “Mixer” is not a module, is an outboard mixer, a Soundcraft GB2R 12-2 > where all audio signals are routed to. > It’s from its monitor outs (headphones) that I detected the leak. > It m
2018-06-12 by Diego Ragnini
“Mixer” is not a module, is an outboard mixer, a Soundcraft GB2R 12-2 where all audio signals are routed to. It’s from its monitor outs (headphones) that I detected the leak. It makes no sense to me. > Il giorno 12 giu 2018, alle ore 14:42, Florian Anwander fanwander@mnet-online.
2018-06-12 by yahoo@doepfer.de
As external audio signals are involved it maybe a grounding problem. Make sure that the cables that are used to connect the modules to the external signals carry GND (there are patch cables available without GND, as long as one patches within the case no problems occur, but with
2018-06-12 by Florian Anwander
Tobe honest: the culprit is not in the pictured case: it is the device that you describe with "Mixer" where the A-138s and the WMD multiple are fed to. What is this "Mixer"? Am 12.06.2018 um 14:06 schrieb Diego Ragnini diegora@free.fr [Doepfer_a100]: > > > Hi thanks everybody for
2018-06-12 by John Hollis
Hi Diego, It looks like the modules are mounted directly on wood without an earthing plane. If that’s the case it might well cause problems. Best John > On 12 Jun 2018, at 13:06, Diego Ragnini diegora@free.fr [Doepfer_a100] wrote: > > Hi thanks everybody for replying > > The situ
2018-06-12 by Diego Ragnini
Hi thanks everybody for replying The situation was vague indeed, sorry, though the patch is very basic The case is just 1 row (LC3) As you can see by the colours on the following screenshot, the multed audio 1 signal (red cable) is slightly affected by the audio 2 signal (blue ca
2018-06-12 by yahoo@doepfer.de
Yes, two of the opamps of the TLC274 are the input buffers. You may try it out but from my point of view it would be more reasonable to add an offset circuit (trimming potentiometer + resistor) than to try out to find another opamp with a different offset. Best wishes Dieter Doep
2018-06-12 by John Hollis
Hi Dieter, Thanks for your response. I have now had a chance to pull an A-156 out of the rack. From what I can see it looks like that TLC274 is the input buffer. If that chip has a 10mV offset I was wondering if it might be worth swapping out the TLC264 for something like an LT10
2018-06-12 by John Hollis
Hi Diego, It does sound like there might be a short between the adjacent modules. Can you check for that? Thanks John > On 12 Jun 2018, at 08:57, yahoo@doepfer.de [Doepfer_a100] wrote: > > Hello, > > the A-138s is a very simple module (just a standard mixer circuit with > operati
2018-06-12 by Florian Anwander
Am 11.06.2018 um 15:09 schrieb Diego Ragnini diegora@free.fr [Doepfer_a100]: > Hello, I have a WMD buffered multiple which suffers from A-138s mixer interferences, both powered by an LC6 Doepfer case. Is the WMD faulty or its cable? A-138s output can be heard on the WMD, unless k
2018-06-12 by yahoo@doepfer.de
Hello, the A-138s is a very simple module (just a standard mixer circuit with operational amplifiers) and I have no idea how the signal could crosstalk to any other module. Best wishes Dieter Doepfer > -----Ursprungliche Nachricht----- > Von: Doepfer_a100@yahoogroups.com [mailto:
2018-06-11 by Diego Ragnini
Hello, I have a WMD buffered multiple which suffers from A-138s mixer interferences, both powered by an LC6 Doepfer case. Is the WMD faulty or its cable? A-138s output can be heard on the WMD, unless knob's fully CCW. I also see that the multed signal is louder that the original
2018-06-04 by yahoo@doepfer.de
Hello, unfortunately there is no offset trimming available at the A-156 module. P1, P2 and P3 are just attenuators (with buffers) but do not offer an offset feature. One would have to add an offset externally or modify the A-156 (by adding trimming potentiometers and resistors fo
2018-06-01 by John Hollis
Hi Dieter, I am using 4 x A-156 together. The input threshold tracking is usable but a bit tricky with one of the modules being slightly different. I have read the A-156 adjustment guide and have the correct tools to hand. I understand how P1, P2 and P3 adjust the input scale but
2018-05-23 by Diego Ragnini
Yes I knew it, though I didn’t realised to be allowing room for the humor I eventually am one of those who can’t help but being hilarious ! LOL > Il giorno 23 mag 2018, alle ore 14:56, David Kellett davidkellettwoulf@yahoo.com [Doepfer_a100] ha scritto: > > The Maths is not an or
2018-05-23 by Diego Ragnini
Thanks again Dieter ! Best wishes, Diego Il giorno 23 mag 2018, alle ore 14:59, yahoo@doepfer.de [Doepfer_a100] Doepfer_a100@yahoogroups.com > ha scritto: > Hello, > > > I have found this case on sale and I am not sure whether all components are original or not > The seller canno
2018-05-23 by Vladimir Pantelic
PM'd for Maths ;) On 23.05.2018 13:49, Diego Ragnini diegora@free.fr [Doepfer_a100] wrote: > > > Hello, > > > I have found this case on sale and I am not sure whether all components > are original or not > The seller cannot state anything for sure, since he bought it second hand
2018-05-23 by yahoo@doepfer.de
> Hello, > > > I have found this case on sale and I am not sure whether all components are original or not > The seller cannot state anything for sure, since he bought it second hand > Any idea please? > > Best wishes, > Diego At first sight the case seems to be complete and orig
2018-05-23 by David Kellett
The Maths is not an original component - but I guess you knew that! :-) David www.movingisliving.co.uk Sent from my iPhone > On 23 May 2018, at 12:49, Diego Ragnini diegora@free.fr [Doepfer_a100] wrote: > > Hello, > > > I have found this case on sale and I am not sure whether all
2018-05-23 by Diego Ragnini
Hello, I have found this case on sale and I am not sure whether all components are original or not The seller cannot state anything for sure, since he bought it second hand Any idea please? Best wishes, Diego
2018-05-23 by Diego Ragnini
Okay, thanks again ! > Il giorno 22 mag 2018, alle ore 11:42, yahoo@doepfer.de [Doepfer_a100] ha scritto: > > The hysteresis of the A-119 comparator is fixed (defined by the resistor > R28) and cannot be changed like the A-167 which has a Gap control. > > Best wishes > Dieter Doe
2018-05-22 by omega_images2000@yahoo.it
Hi Diego! thank you very much for your reply. i'll follow your instructions :-) thanks again Yiannis.
2018-05-22 by Diego Ragnini
Hello you’re welcome Digital modules should be no problem at all I also was worrying about this the first time, then I discovered that not necessarily we experience issues of any kind By the way, try to install analog VCA’s and analog VCF’s on the left side (if the PSU is on the
2018-05-22 by omega_images2000@yahoo.it
Hi! i just got my first A-100LC9 case :-) and it's great. I'm just puzzled about how to place my modules, as it's the first time. the manual warns not to place any audio modules [VCF,VCA,VCO etc] near the power supply. so, how far is considered safe? also, does this rule apply al
2018-05-22 by yahoo@doepfer.de
The hysteresis of the A-119 comparator is fixed (defined by the resistor R28) and cannot be changed like the A-167 which has a Gap control. Best wishes Dieter Doepfer > -----Ursprüngliche Nachricht----- > Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] > G
2018-05-18 by Diego Ragnini
Sorry Dieter, is the hysteresis concerned by this situation? > Il giorno 18 mag 2018, alle ore 11:04, yahoo@doepfer.de [Doepfer_a100] ha scritto: > > Hello, > > in principle it should work. As you suppose the gate is simply derived from > the envelope signal by means of a compara
2018-05-18 by Diego Ragnini
Thanks a lot Dieter I will try the way you say Best regards, dxx > Il giorno 18 mag 2018, alle ore 11:04, yahoo@doepfer.de [Doepfer_a100] ha scritto: > > Hello, > > in principle it should work. As you suppose the gate is simply derived from > the envelope signal by means of a com
2018-05-18 by yahoo@doepfer.de
Hello, in principle it should work. As you suppose the gate is simply derived from the envelope signal by means of a comparator with adjustable threshold. I'd recommend to set the threshold fully clockwise (max. threshold value, about +9V) and then reduce the gain until the gate
2018-05-18 by Diego Ragnini
Thank you Jacco I don’t own a pedal noise gate, is there any in eurorack format? Though probably it will not be too different from a comparator + a kind of logic module... > Il giorno 18 mag 2018, alle ore 08:05, Jacco Ville jaccoville@yahoo.com [Doepfer_a100] ha scritto: > > May
2018-05-18 by Jacco Ville
Maybe use a noisegate in front of the A119? Sent from my IPhone. > Op 18 mei 2018 om 07:40 heeft Diego Ragnini diegora@free.fr [Doepfer_a100] het volgende geschreven: > > Hello everybody, > > Hope someone can help me somehow > > I have a simple patch involving this module: > A mu
2018-05-18 by Diego Ragnini
Hello everybody, Hope someone can help me somehow I have a simple patch involving this module: A mult signal from electric rhythmic guitar (muted peaks: extremely transient short envelopes) feeds the module to create gates which in turn are used to trigger MI Rings. The problem -
2018-04-06 by Jacco Ville
I’ve read it, thank you. Unfortunately these or this type of adapters are gonna be prohibited and it’s for resellers only to be sold as “replacement”. But I found a Dutch firm which has a similar adapter. Cheers Jacco Sent from my IPhone. > Op 6 apr. 2018 om 11:14 heeft Florian A