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Books About 'Waves'

2005-11-20 by sfrules

I loved this book. It describes the physics of sound and how sound is produced by various musical instruments. It's a great source for physical modelling synthers. The Acoustical Foundations of Music (Hardcover) by John Backus http://www.amazon.com/gp/product/ 0393090965/102-3146

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Re: CGS ring mod + a106 thoughts

2005-11-20 by thomasborax

hi- i would like to post a clip of the real ring mod with two a119s before it in the signal chain, but my computer is currently crapping out too often and my recording app., cubase, is too unstable now to mess with. when i get it back up into good running i will try to post some

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Re: [Doepfer_a100] Re: g6 frame power supply replacement question

2005-11-20 by davevosh@aol.com

In a message dated 11/20/2005 7:15:09 AM Eastern Standard Time, synaptic_music@yahoo.com writes: i recommend the new psu2. ingo, thanks for info - psu2 has been ordered so hopefully i`ll have my frame back "on the air" soon ! thanks, dave [Non-text portions of this message have b

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Re: g6 frame power supply replacement question

2005-11-20 by selfoscillate

hello dave, i recommend the new psu2. it is mechanically silent and provides some extra power, which is also good for the lifespan of the psu. best wishes ingo --- In Doepfer_a100@yahoogroups.com, davevosh@a... wrote: > > > > > _Doepfer_a100@yahoogroups.com_ (mailto:Doepfer_a100@

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Re: [Doepfer_a100] RE: g6 frame power supply replacement question

2005-11-20 by davevosh@aol.com

The first replacement was because I too (dave) melted my PSU. nick, psu2 has been ordered so now i wait for it to arrive. these installation notes should be quite handy, too ! one minor observation - while i haven`t noticed any hum problems with the old supplies in my other 3 g6

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RE: [Doepfer_a100] RE: g6 frame power supply replacement question

2005-11-20 by n keller

Gino, How's it going? The first replacement was because I too (dave) melted my PSU. The two other replacements are now being used again since I built a custom set of boxes. I actually could power my system on three PSU2s, but using the other two older models means I can have a se

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Re: [Doepfer_a100] g6 frame power supply replacement question

2005-11-20 by davevosh@aol.com

In a message dated 11/19/2005 3:06:38 PM Eastern Standard Time, nirokesan@hotmail.com writes: PSU2 is the way to go. There is no problem with mounting nick, thanks for the info ! psu2 it is - best, dave [Non-text portions of this message have been removed]

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RE: g6 frame power supply replacement question

2005-11-19 by Robair, Gino

Hi Nick, I'm contemplating the same thing: I have one suitcase with an old, humming ps and another with the new quiet one. What did you do with the old supplies? Auction them off? How much time did it take to do the replacing? g __________________________ Message: 3 Date: Sat, 19

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Re: [Doepfer_a100] CGS ring mod + a106 thoughts

2005-11-19 by tkrakowiak

hey, how about a little patch'o'rama for the group. most of the so-called ''contests'' died previously. let's put some life into that aspect . any takers on a106 and/or ringmod (tweaked or not) patches? all the best to all t On 19/11/05, thomasborax wrote: > > hello- > brushing o

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CGS ring mod + a106 thoughts

2005-11-19 by thomasborax

hello- brushing over the recent posts about the real ring mod, i must say that this is indeed a great item to have in your arsenal. if you don't have one, please go get one and break out your soldering iron. a100 users can boost their signals before or after the real ring mod wit

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RE: [Doepfer_a100] g6 frame power supply replacement question

2005-11-19 by n keller

Dave , PSU2 is the way to go. There is no problem with mounting. You'll end up with extra power for future expansion and you're room will be a bit more quiet. I've replaced most of the PSUs in my system. I had a problem with considerable ambient hum, especially noticable when the

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Re: [Doepfer_a100] Re: A111 troubles

2005-11-19 by achtung_999

Hello, I finally had some time to fix the faulty A111 this weekend. Thanks for the tip Zoran, it was indeed the hard sync input. I put a new part in and it works fine again! And now on to tuning the other A111.. The work of a modular owner never stops ;-) Greetings, Ernst

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g6 frame power supply replacement question

2005-11-19 by davevosh@aol.com

_Doepfer_a100@yahoogroups.com_ (mailto:Doepfer_a100@yahoogroups.com) hello to all - well, i seem to have suffered my first doepfer failure in 6 years - a power supply in a g6 frame seems to have failed - "nice" scorched smell and only one of the busboard leds is lit. so, i`m abou

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Re: AW: [Doepfer_a100] Re: comparing ring modulators

2005-11-18 by Anton Coops

> That's one of the basic principles of the frequency shifter. I have a word > document that explains all the trigonometric formulas behind the RM/FS > (sorry the words are in German). If anybody's interested I can send him the > file (excerpt from the A-126 service manual). What

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AW: [Doepfer_a100] Re: comparing ring modulators

2005-11-18 by Dieter Doepfer

> the so called 'difference tone'. If you combine two sine waves f1 and > f2, that are far enough apart in frequency, you will be able to hear a > 'difference tone' f1 - f2. Does anybody on the list have enough > physics background to tell if this is basically the same thing goin

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Re: [Doepfer_a100] Re: comparing ring modulators

2005-11-18 by Anton Coops

On 18 Nov 2005, at 0:13, okiikahuna wrote: > That's my understanding as well: Just to clarify terms: An > ideal "balanced" modulator (4 quadrant multiplier), where a negative > modulator inverts the carrier, results in sum and difference signals > with no carrier or modulator pre

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Re: comparing ring modulators

2005-11-18 by ilanode

Hello Dieter, Ken has licensed some of his circuits to Metalbox (FracRak compatible) and Cyndustries (Modcan compatible), added to a Serge cicuit for Banalogue (finaly: Euro Rack compatible) thus he probably would license the RRM to you. (None of the above offering the RRM.) I do

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AW: [Doepfer_a100] Re: comparing ring modulators

2005-11-18 by Dieter Doepfer

> this would be interesting of course, > but there is one thing which we have to think about. > ken stone uses germanium diodes in his circuit which are > more than 30 years old, he recycles them from old computers. > i'm not sure if the needed diodes are easy to get for dieter.

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AW: [Doepfer_a100] Re: comparing ring modulators

2005-11-18 by Dieter Doepfer

> However, Ingo's CGS recording seems to show that a "real" ring > modulator sounds quite different from the balanced modulators we've > all gotten accustomed to. I wonder if our good friend Dieter > Doepfer would be interested in making a "real" diode ring modulator > that also

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Re: comparing ring modulators

2005-11-18 by selfoscillate

this would be interesting of course, but there is one thing which we have to think about. ken stone uses germanium diodes in his circuit which are more than 30 years old, he recycles them from old computers. i'm not sure if the needed diodes are easy to get for dieter. best wishe

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Re: comparing ring modulators

2005-11-17 by okiikahuna

That's my understanding as well: Just to clarify terms: An ideal "balanced" modulator (4 quadrant multiplier), where a negative modulator inverts the carrier, results in sum and difference signals with no carrier or modulator present in the output. Classic amplitude modulation (2

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Re: comparing ring modulators

2005-11-17 by ilanode

AFAK the difference btn amplitude modulation and ring modulation is that only in the latter the carrier freq is no longer present at the output... Wether this is done by an IC or diodes is soundwise of interest but doesn't affect the label. Regards, Ingo --- In Doepfer_a100@yahoo

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Re: comparing ring modulators

2005-11-17 by okiikahuna

I think that the only "real" ring modulator among the bunch is the CGS unit. I will explain my own limited understanding of this, if anybody cares. (If somebody with more technical knowledge sees a mistake, please correct me) The term "ring modulator" refers to a a certain way of

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Re: comparing ring modulators

2005-11-17 by ilanode

Great! I'll wait patiently. Regards, Ingo --- In Doepfer_a100@yahoogroups.com, "selfoscillate" wrote: > > > hello ingo (the not self-oscillating :-)), > > afaik the a133 is not really a ring modulator, but like a vca, > it can be used to achieve similar effects. > i'll record a s

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Re: comparing ring modulators

2005-11-17 by selfoscillate

hello ingo (the not self-oscillating :-)), afaik the a133 is not really a ring modulator, but like a vca, it can be used to achieve similar effects. i'll record a sample using the a133, but i cannot do this before weekend i guess. i still have some troubles with my recording card

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Re: comparing ring modulators

2005-11-17 by ilanode

Is the A133 really capable of both amplitude and ring modulation? There's no info referring to this on the Doepfer HP. Anyhow, Ingo, if you don't mind I'd like to hear some examples of amp/ring modulation with the A133. Regards, Ingo --- In Doepfer_a100@yahoogroups.com, "selfosci

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Re: comparing ring modulators

2005-11-17 by selfoscillate

hello, i tried the a133 too, but i haven't recorded it, because i wanted to compare only dedicated ring modulators. you are right, the a133 can also be used to generate ring modulator effects. damn, i should have recorded that module too. best wishes ingo --- In Doepfer_a100@yaho

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Re: comparing ring modulators

2005-11-16 by okiikahuna

--- In Doepfer_a100@yahoogroups.com, "ilanode" wrote: I think you guys might have missed Doepfer's "other" ring modulator in your otherwise exhaustive comparison. The A-133 Polarizer is just a 4 quadrant multiplier and seems to make a fine balanced modulator. Just adjust the carr

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Doepfer a-100 modules, kenton units, a maq 16/3 and a tb303 forsale

2005-11-16 by Julian

I have a large number of doepfer modules forsale, along with a couple of kenton midi cv convertors, and a doepfer maq 16/3, and a nice roland tb-303. Additionally theres some roland knobs etc there as well. The full list, along with pricing, can be found at: http://www.numberofth

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Re: comparing ring modulators

2005-11-16 by ilanode

--- In Doepfer_a100@yahoogroups.com, denis goekdag wrote: > > it's really easy to assemble one or two cgs ringmods from the assembled > boards you can buy, just take an 8 hp blindplate, drill 6 8.2mm holes > for the s6 sockets, hot-glue the two cgs boards to the plate (the > tran

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Re: [Doepfer_a100] Re: comparing ring modulators

2005-11-16 by denis goekdag

it's really easy to assemble one or two cgs ringmods from the assembled boards you can buy, just take an 8 hp blindplate, drill 6 8.2mm holes for the s6 sockets, hot-glue the two cgs boards to the plate (the transformer's "casing" allow this quite smoothly), wire the sockets, don

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Re: comparing ring modulators

2005-11-15 by Tim Stinchcombe

Hi Ingo, Thanks for the interesting comparisons! I'm quite surprised that there is any difference at all between the original state and with c1 shorted - I'm wondering whether the A-111 sine-shaping can introduce DC into the signal (I'll check it out when I get the chance). Since

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RE: [Doepfer_a100] Re: comparing ring modulators

2005-11-15 by Zoran Bosnjak

Ingo, thank you so much for the example! I like the CGS ring module the most. What a pity it is not offered assembled. I still have to get the soldering lesson #1 before trying to figure it out myself... (Does anybody offer basic electronics course in Montreal?) Regards, Zoran >F

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Re: comparing ring modulators

2005-11-15 by selfoscillate

--- In Doepfer_a100@yahoogroups.com, "ilanode" wrote: > > --- In Doepfer_a100@yahoogroups.com, "selfoscillate" > wrote: > > > > > > hello antonio, > > > > the missing lows in #5 are probably because the > > cgs real ring is a passive device, the output > > loudness is weak on thi

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Re: comparing ring modulators

2005-11-15 by ilanode

--- In Doepfer_a100@yahoogroups.com, "selfoscillate" wrote: > > > hello antonio, > > the missing lows in #5 are probably because the > cgs real ring is a passive device, the output > loudness is weak on this module. Just want to add that the RRM is known to load the VCOs and thus

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Re: comparing ring modulators

2005-11-15 by selfoscillate

hello antonio, the missing lows in #5 are probably because the cgs real ring is a passive device, the output loudness is weak on this module. i haven't amplified the module output to show the differences in loudness. dsp-based ring modulators are not really interesting for me. i

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Re: comparing ring modulators

2005-11-15 by ilanode

Hello Ingo, great that you were busy once more supplying us with some samples. Very much appreciated, very helpful. Thanks! Ingo-not- self-oscilating --- In Doepfer_a100@yahoogroups.com, "selfoscillate" wrote: > > > hello, > > yesterday i modded an a114 like suggested > by peter

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Re: comparing ring modulators

2005-11-15 by atuzzi

Hi Ingo, thanks, great comparison you should add a DSP style ring modulator too, just too see the deviation from the "pure" mathematical creation (something like CSound or MAX or the pick your flavour). I must say the more dramatic is #3 And I don't understand the missing lows in

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comparing ring modulators

2005-11-15 by selfoscillate

hello, yesterday i modded an a114 like suggested by peter and tim. when testing the device i compared it with other ringmodulators. here is a short recording to show the timbral differences and also the varying loudness. http://www.selfoscillate.de/a100files/ringmods-sequence.mp3

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AW: [Doepfer_a100] Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-14 by Dieter Doepfer

Ingo, thank you for the translation (and sorry for my late response but I was very bus last week even because of the A-100 live event in the Munic culture center "GASTEIG"). This is indeed the explanation. The most important part is the z-diode (5V1 or 5V6) between the control vo

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Re: A-107 Morphing Filter Core?

2005-11-13 by vtl5c3

Thanks! Judging by the sound samples on the selfoscillate website, I'm not surprised. It's a very clean sounding filter. Now, if I could figure out what the mystery chip is in my 106... Looks like someone sanded off the markings. R. --- In Doepfer_a100@yahoogroups.com, "selfoscil

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RE: [Doepfer_a100] Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by Zoran Bosnjak

Thank you Tim and Ingo! Beside IC5 (TL064), one of the extra components on the solder side is missing. I talked to my dealer (Technopolis, Montreal), and he wants confirmation from Mr. Doepfer on what exactly needs to be done. However, my opinion is that you guys were really fant

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Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by Tim Stinchcombe

Hi Zoran, > My Frequency Shifter has four TL064CN's and one TL084CN. That single TL084 > is at the bottom, close to DOEPFER sign in the corner. Is this how it is > supposed to be ? That is IC9: thus, that your IC5 is still a TL064, then it is likely you have an earlier module wit

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Re: [Doepfer_a100] Re: World's easiest mod: A-114 DC coupling.

2005-11-12 by tkrakowiak

hello group, i've changed mine according to Peter's notes. works great , gives more grunge to multiharmonic events, harsher than original rm. overall great and simple mod, thanks Peter. On 10/11/05, tkrakowiak wrote: > thanks Tim! > > On 10/11/05, Tim Stinchcombe wrote: > > > I'l

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Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by Zoran Bosnjak

My Frequency Shifter has four TL064CN's and one TL084CN. That single TL084 is at the bottom, close to DOEPFER sign in the corner. Is this how it is supposed to be ? Regards, Zoran 1. check the ic5 and ic9 on the pcb. if these are tl064, >then maybe they should be replaced with tl

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Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by Tim Stinchcombe

Well done Ingo! After spending some minutes with mine and taking some readings etc., it was clear it works fine, and then I discovered my PCB has a few components added on the solder-side, some of which are connected with the internal oscillator. By the way, ic5 and ic9 are at th

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Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by selfoscillate

hello, i checked the service manual of the a126 and i think that i found the possible reasons for the malfunction, but these should only occour with the first two production series of the a126. a freshly purchased a126 shouldn't have these problems and should be returned for serv

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Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by Tim Stinchcombe

I'm not aware of any problem like this with mine, but from memory, the amplitude of the internal oscillator takes a while to settle down after a CV change, and so (I'm guessing here) maybe at high CV it is possible that it might stop running completely. I'll check it out later to

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Re: [Doepfer_a100] Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by Bakis Sirros

wierd. i have used my a126 many times and i have never noticed the a126 stop working.... quite possibly i have never turned the shift knob to about 10? bakis. --- Tommy DOG wrote: > Then mine does too. > It's always behaved like that. > > TD > > --- In Doepfer_a100@yahoogroups.co

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Re: A-126 VCFS (Frequency Shifter) Problem

2005-11-12 by sci700

same problem with mine, anyone got a solution to it..? /daniel --- In Doepfer_a100@yahoogroups.com, "Tommy DOG" wrote: > > Then mine does too. > It's always behaved like that. > > TD > > --- In Doepfer_a100@yahoogroups.com, Bakis Sirros wrote: > > > > hello zoran, > > it seems to

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