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 Forum index » DIY Hardware and Software
DS 7 clone
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DiscoFreq



Joined: Jul 20, 2006
Posts: 6
Location: Belgium

PostPosted: Fri Jul 21, 2006 1:56 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi,

I thought that information was on the site, but it seems it isn't, so I'll have to search Smile

I tried to trigger my drum synths with the CV outputs of my 80's Vermona DRM Drum Machine (not the DRM-1 Drum Synthesizer they make now). It has a 30-pin cable for separate audio outs for almost every sound and triggers for all sounds plus some extra triggers (16th notes and some triggers you can program on the Vermona). I can trigger all drum synths with the audio outputs, but only the Amdeks (and the Coron/Boss/Washburn Handclap modules) can be triggered with the triggers.

I will compare my trigger inputs with those of Marc Bareille. I discovered years ago that I could add such an input by connecting a jack on the wire between the Piezo cell and the Sens pot, but I see more components on the clones, so if you have no problems I should try to do something like that.
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DiscoFreq



Joined: Jul 20, 2006
Posts: 6
Location: Belgium

PostPosted: Fri Jul 21, 2006 1:57 am    Post subject: Reply with quote  Mark this post and the followings unread

zipzap wrote:
Cool site! never been there before. lots of stuff to check out and a nice collection of schematics (Böhm Trickverzerrer! i like that stuff)

Thanks for the comments Zipzap Smile

I have such a Trickverzerrer, it took me several months to find out what it was and with the schematics from Vermona.de I noticed it was not broken, but the Boss-type adaptor input (added by the previous owner) was wired inverse Smile
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DiscoFreq



Joined: Jul 20, 2006
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PostPosted: Fri Jul 21, 2006 3:20 am    Post subject: Reply with quote  Mark this post and the followings unread

I have no drawing of it by Marc Bareille (I suppose I made one myself, but I can't find it), but this is how he explained the CV mod to me:

Marc Bareille wrote:
To add a CV input to the DS7 ( vintage or clone...) is very simple.

You just need to add one resistor ( 33k to 100k) and one jack to the device.
One leg of the resistor is soldered to the Jack tip (hot point) , and the other leg of the resistor must be connected to the nodal point of R2,R9,R12,R13,U3 (refer to the DS7clone schematic on my website...)
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DiscoFreq



Joined: Jul 20, 2006
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Location: Belgium

PostPosted: Fri Jul 21, 2006 3:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Oh and for the Amdek PCK-100 (quite similar but with both sweep "up" AND "down" and multiple wave types for VCO and LFO) there's a lot of info (schematics, pcb, mods,...) on my site:
http://filters.muziq.be/model/amdek/pck100

It's the same as the Boss PC-2, this was a DIY kit version of it.
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Uncle Krunkus
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PostPosted: Fri Jul 21, 2006 4:25 am    Post subject: Reply with quote  Mark this post and the followings unread

The DiscoFreq is here! Very Happy
The DiscoFreq is here! Wink
Our forum has the coolest dudes! Cool
The DiscoFreq is here! Rolling Eyes

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DiscoFreq



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PostPosted: Fri Jul 21, 2006 6:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
The DiscoFreq is here! Very Happy
The DiscoFreq is here! Wink
Our forum has the coolest dudes! Cool
The DiscoFreq is here! Rolling Eyes


OMG, I have fans! Wink
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Scott Stites
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PostPosted: Fri Jul 21, 2006 7:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Welcome indeed! Many a time I have cruised over to Disco Freq's site - lotsa good info!

Cheers,
Scott
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dnny



Joined: Mar 12, 2005
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PostPosted: Fri Jul 21, 2006 3:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:

Our forum has the coolest dudes! Cool


thats true!
maybe Thomas Henry will join someday Wink

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dnny



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PostPosted: Fri Jul 21, 2006 3:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

DiscoFreq wrote:
I have no drawing of it by Marc Bareille (I suppose I made one myself, but I can't find it), but this is how he explained the CV mod to me:

Marc Bareille wrote:
To add a CV input to the DS7 ( vintage or clone...) is very simple.

You just need to add one resistor ( 33k to 100k) and one jack to the device.
One leg of the resistor is soldered to the Jack tip (hot point) , and the other leg of the resistor must be connected to the nodal point of R2,R9,R12,R13,U3 (refer to the DS7clone schematic on my website...)


that's the spot right here:
Posted Image, might have been reduced in size. Click Image to view fullscreen.
but it shoud not trigger the envelope? diode D2 shoud prevent it right?
remember to use 0-5V CV because the whole unit runs on 5V... well that's what i think...

the whole schematic can be found here

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Pehr



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PostPosted: Sun Sep 24, 2006 11:00 am    Post subject: Reply with quote  Mark this post and the followings unread

Is it really neccesary with log pots on the DS7? Confused
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goodrevdoc



Joined: Sep 11, 2006
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PostPosted: Sun Sep 24, 2006 1:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
Is it really neccesary with log pots on the DS7?


I was wondering about this myself. Have not ordered pots as of yet, but i plan to build 4 in one box and have at least two with pink/white noise sources. From pouring endlessly over the schem, it doesn't seem so, save maybe for the output. Especially considering this is a drum synth, pitch and dialing in of sounds only has to be so accurate(at least for me anyway). I was also wondering if i could get away with just adding the output of a noise source directly to pin 3. Don't know if that counts as a VCA, but im hoping it will work, so as to keep my parts count down.
-justin
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Pehr



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PostPosted: Mon Sep 25, 2006 2:52 am    Post subject: Reply with quote  Mark this post and the followings unread

goodrevdoc wrote:
but i plan to build 4 in one box and have at least two with pink/white noise sources.


me too! Very Happy and I'm thinking about constructing a trigger sequencer somehow for them...

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dnny



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PostPosted: Mon Sep 25, 2006 10:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Pehr wrote:
Is it really neccesary with log pots on the DS7? Confused


no i don´t think so - well mine works nicely whit linear ones.

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nisios



Joined: Sep 02, 2006
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Location: Braga - Portugal

PostPosted: Mon Sep 25, 2006 11:04 am    Post subject: Reply with quote  Mark this post and the followings unread

I see a lot of people complaining about the ca3080.
I have a local shop here who has lots of these chips still. If its relly that important i can buy and send some.

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goodrevdoc



Joined: Sep 11, 2006
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PostPosted: Mon Sep 25, 2006 12:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
I see a lot of people complaining about the ca3080.
I have a local shop here who has lots of these chips still. If its relly that important i can buy and send some.

How much/ how many nisois? CA3080's can still be had from places like eBay and futurlec, but if there be a deal I would certainly be interested.
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nisios



Joined: Sep 02, 2006
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PostPosted: Mon Sep 25, 2006 12:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

i need to go there and check that out.......last time i bought 8.....they had more....ill have to ask.....i think it was under 1 euro each.....not shure. I will pay them a visit this week and then i can tell you.
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goodrevdoc



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PostPosted: Mon Sep 25, 2006 5:32 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the tip, dnny. I had my suspicions as to the workability of log vs. lin. Now i will order lin pots and be done with it.
-justin
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TheLegace



Joined: Oct 04, 2006
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Location: Brampton, ON

PostPosted: Wed Oct 04, 2006 8:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

I am so confused. Hey guyz I am newb DIYer.

I just dont understand what exactly the DS7 does, I have been looking on google and no info.

I know DS7 is a drum Synth, now it can be triggered to be connected to a Pezzio, do you have to sample a sound? How would you end up making one, for a complete drumset. With toms and everything.

Making multiple Dual DS7s and then having them connect through one output?

Any help is quite appreciated.
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Uncle Krunkus
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PostPosted: Wed Oct 04, 2006 9:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

It doesn't use samples, it's an analogue drum synth. That means it generates a tone and mixes that with noise and then it decays away like a drum would. It's a very electronic kind of drum sound.
Each DS7 is 1 drum, so for a full kit you would need multiple DS7s and a method to mix them together into 1 or 2 outputs.

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TheLegace



Joined: Oct 04, 2006
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PostPosted: Thu Oct 05, 2006 4:17 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
It doesn't use samples, it's an analogue drum synth. That means it generates a tone and mixes that with noise and then it decays away like a drum would. It's a very electronic kind of drum sound.
Each DS7 is 1 drum, so for a full kit you would need multiple DS7s and a method to mix them together into 1 or 2 outputs.


Ya I kinda figured that out now. Thank you, so you were saying it will make a very electric sound, can it make any acoustic type sounds, is there a way to preset it in a way to do it?
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Uncle Krunkus
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PostPosted: Thu Oct 05, 2006 5:20 am    Post subject: Reply with quote  Mark this post and the followings unread

Negative.
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EraSer



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PostPosted: Thu Oct 19, 2006 9:22 am    Post subject: Reply with quote  Mark this post and the followings unread

I would build DS7.I love how it sounds!But I have some question before building it

-capacitors are all electrolitics?
-Can you tell me the exact value of each capacitor?I don't find an exact correspondence between part list & schematic.For example:In the part list C1 is 10 uF and in the schematic C1 is 3u3?which is correct?
-I have CA324 & a HA17324 instead of LM324.Can I use them together?Or can I have problems with HA17324?
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dnny



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PostPosted: Fri Oct 20, 2006 3:55 am    Post subject: Reply with quote  Mark this post and the followings unread

balance wrote:

-capacitors are all electrolitics?


not all C1,C2,C3,C6&C7 are.

Capacitors
----------
1 C1 10uF/16V
2 C2,C3 3u3/16V
1 C4 47n
1 C5 1n
1 C6 0.1uF/16V
1 C7 1uF/16V

the part list is correct.

balance wrote:

-I have CA324 & a HA17324 instead of LM324.Can I use them together?Or can I have problems with HA17324?


i would try the CA324 and if it´s not working... try to get a LM324 they are not so hard to find.

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v-un-v
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PostPosted: Fri Oct 20, 2006 11:17 am    Post subject: Reply with quote  Mark this post and the followings unread

Right! This deserves to be a sticky too!!

Love the avatar Uncle K. Dunno what's more frightening, you or the teminator Shocked Laughing

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ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.
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v-un-v
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PostPosted: Fri Oct 20, 2006 11:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Embarassed

Oh dear- because of the alphabetical ordering, the DS7 has taken the place of King Klee. We cannot allow this!!! Exclamation Exclamation Exclamation

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IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.
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