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tokyomatik
Joined: Jan 20, 2011 Posts: 171 Location: berlin
Audio files: 6
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Posted: Mon Apr 07, 2014 9:45 am Post subject:
Bareille DS8-how can i increasethe volume??? |
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Hi! Im not really satisfied with the volume of my DS8....and also the noise sound is pretty harsh, not so smooth like on my ak47. any suggetion? |
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Varoudis
Joined: Dec 03, 2009 Posts: 31 Location: London
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Posted: Thu Apr 10, 2014 12:47 am Post subject:
Re: Bareille DS8-how can i increasethe volume??? |
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tokyomatik wrote: | Hi! Im not really satisfied with the volume of my DS8....and also the noise sound is pretty harsh, not so smooth like on my ak47. any suggetion? |
sorry not help but a very newbie question...
What is an AK47? (in this context ) I google it but I get the 'obvious' results. |
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DUBmatze
Joined: Feb 18, 2013 Posts: 150 Location: south Germaica (schwabilon)
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Posted: Thu Apr 10, 2014 7:40 am Post subject:
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i think this is a AK47:
i prefer a m16 (peter Tosh)
or this (Alborosi)
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Varoudis
Joined: Dec 03, 2009 Posts: 31 Location: London
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Posted: Thu Apr 10, 2014 7:53 am Post subject:
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DUBmatze wrote: | i think this is a AK47:
i prefer a m16 (peter Tosh)
or this (Alborosi)
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LOL |
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DUBmatze
Joined: Feb 18, 2013 Posts: 150 Location: south Germaica (schwabilon)
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Varoudis
Joined: Dec 03, 2009 Posts: 31 Location: London
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Posted: Thu Apr 10, 2014 7:55 am Post subject:
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I would love to build the DS8 but that CA3080 is hard to get. |
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DUBmatze
Joined: Feb 18, 2013 Posts: 150 Location: south Germaica (schwabilon)
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Posted: Thu Apr 10, 2014 8:19 am Post subject:
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Varoudis wrote: | I would love to build the DS8 but that CA3080 is hard to get. | have a look at ebay - there are a lot of them. (also in GB) |
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Varoudis
Joined: Dec 03, 2009 Posts: 31 Location: London
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Posted: Thu Apr 10, 2014 8:22 am Post subject:
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DUBmatze wrote: | Varoudis wrote: | I would love to build the DS8 but that CA3080 is hard to get. | have a look at ebay - there are a lot of them. (also in GB) |
I did it this morning but some seen a bit dodgy or fake others had one IC for 10++USD(8-9gbp)!! (and again the price dont not mean it not face).
I was hopping to find some schematic with a replacement.
EDIT: I end up getting 2 (the last 2) from a guy in the UK for 2.50GBP each.... will see |
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DUBmatze
Joined: Feb 18, 2013 Posts: 150 Location: south Germaica (schwabilon)
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jumunius
Joined: Apr 19, 2010 Posts: 346 Location: San Francisco, CA
Audio files: 13
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Posted: Sun Apr 13, 2014 12:32 am Post subject:
Re: Bareille DS8-how can i increasethe volume??? |
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tokyomatik wrote: | Hi! Im not really satisfied with the volume of my DS8....and also the noise sound is pretty harsh, not so smooth like on my ak47. any suggetion? |
From Marc Bareille's site:
Q) The output level is low ... What can i do ?
A) The output level is sized to be around -10dBu nominal. To increase it : replace R30 ( 100k) by a 330k or 470k resistor . This should be enough for most of applications, including modular synthesizers patches ... Another solution: use a good preamp... _________________ -Jim |
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jumunius
Joined: Apr 19, 2010 Posts: 346 Location: San Francisco, CA
Audio files: 13
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Posted: Sun Apr 13, 2014 12:36 am Post subject:
Re: Bareille DS8-how can i increasethe volume??? |
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tokyomatik wrote: | Hi! Im not really satisfied with the volume of my DS8....and also the noise sound is pretty harsh, not so smooth like on my ak47. any suggetion? |
PS I don't know what you're hearing in the noise sound that's harsh. Want to post some clips? It might be a genuine problem or maybe just a different characteristic of noise than you're used to.
I recall the noise being a little loud, balance wise, on the mix knob. At 12:00 I found the noise to be too loud compared to the oscillator. That could be the issue, and you can fix it by changing a resistor value.
-Jim _________________ -Jim |
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nuclearsound
Joined: Jul 16, 2013 Posts: 24 Location: Nantes, France
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tokyomatik
Joined: Jan 20, 2011 Posts: 171 Location: berlin
Audio files: 6
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Posted: Tue Apr 21, 2015 5:23 am Post subject:
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I tried to increase the volume on my DS8 as suggested, replacing R30 with 390k, then 470k, then 560k till 1M.....still the same...
about the sound of the noise, to me its like self oscillating
I mean, i know how white and pink noise sound....not so resonant
I also build an AK47, that is another clone of the DS8 and the noise is more clear and thin, at least what i reconize as white and pink noise
also when i move the balance it fades better to noise respect to the bareille DS8 board, that, instead gives me loud oscillating noise directly when i move the balance pot of just a tick, paradox on the top, on the DS8, it gets less resonant and at lower volume when I'm in the middle position of the balance pot.....??
maybe something wrong with my transistors?? |
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umschmitt
Joined: Jun 29, 2011 Posts: 189 Location: brrlin
Audio files: 11
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Posted: Tue Apr 21, 2015 4:23 pm Post subject:
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(so you're answering a question from last september!)
Concerning the volume issue, here's my uneducated suggestion: you could try to lower R14 (2k7?) - according to the datasheet, Iabc can be up to 2mA. i don't want you to fry your valuable CA3080s, so please get more informed advice and correct me if i'm wrong! _________________ ::U::N::S::C::H::N::E::L::L:: |
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tokyomatik
Joined: Jan 20, 2011 Posts: 171 Location: berlin
Audio files: 6
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Posted: Wed Apr 22, 2015 1:49 am Post subject:
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ok....so this time it will take not so long for my answer....
I will try to reduce that resistor once i'm in front of the ds8.....
thanks for your patience |
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nuclearsound
Joined: Jul 16, 2013 Posts: 24 Location: Nantes, France
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Posted: Sun Sep 20, 2015 6:19 pm Post subject:
Still under development |
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Hi all, and sorry my posts are always like every 6 months. I got back to the troubleshooting of my DS-8, replaced a broken pot, changed the path of my ground wires, from a "all to the negative pin of my battery" to a "daisy chain" as per your advices. And..... my DS-8 is still sounding so low, volume speaking.
Let me sum up my situation : no more "hot" battery or components, all pots looking OK, but at the end the volume is so low that I can barely hear the result.
My R30 is 470 k already, battery is new. I have no idea where my problem can come from.
At some point Marc told me my problem could come from a bad wiring of my volume pot (checked), jack socket (checked) or jack cable (checked).
Or maybe from a low current coming from the piezo (don't know) but I checked the CV in socket by sending CVs with my Mutable Anushri. So checked also.
Or last, he told me it could be a tired or even broken 3080. NOT CHECKED.
I now have an oscilloscope, could anyone help me figure out if my 3080 is broken or not with my multimeter or scope ?
Thanks in advance. Last edited by nuclearsound on Sun Apr 11, 2021 6:03 am; edited 1 time in total |
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elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
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Posted: Sun Sep 20, 2015 10:26 pm Post subject:
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I once had a bad batch of 3080's, I tested using the Unity Gain Voltage Follower circuit from the datasheet (specifically page 3 of the CA3080 datasheet, not the LM3080 datasheet, though the same circuit may be somewhere on that one as well). Doesn't really matter if it's CA or LM, same schematic applies. |
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nuclearsound
Joined: Jul 16, 2013 Posts: 24 Location: Nantes, France
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Posted: Tue Sep 22, 2015 3:08 am Post subject:
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Hi, and thanks elmegil for your help. I downloaded the pdf from Harris, and looked at page 3. I see at the bottom of the page the diagram + waveform of a unity-gain voltage follower configuration, but then my knowledge lets me here. Should I desolder my 3080 (it has no dedicated socket, lame !), or test it on the PCB with my battery feeding 9V (the diagram talks about V+ x 15V...) ?
I see one probe on pin 6 ? What about the other one ?
Sorry for my basic questions. |
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elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
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Posted: Tue Sep 22, 2015 6:28 am Post subject:
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I would
1) build the test circuit with a socket
2) desolder the 3080 and replace it with a socket
3) test the chip
Do you only have the one 3080? If so I would also recommend getting some additional ones as replacement possibilities. It might not be a bad idea if you have extras or get extras to test them before desoldering etc. so that you know you have a good replacement.
Desoldering can be tricky if you haven't done it before, I'd recommend reviewing information you can find on youtube etc if you haven't done this before. |
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nuclearsound
Joined: Jul 16, 2013 Posts: 24 Location: Nantes, France
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Posted: Thu Sep 24, 2015 2:28 am Post subject:
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Hi, and thanks for your help.
Yes mine is a 3080 ("3080E") indeed. But I'm afraid my knowlegde is too low to make this circuit. Anyway, I have good news : My jack socket was bad, and when I replaced it, voila ! Sound is not so high I must say, but now much better than before. I jammed with my small box and a multiFX for more than an hour, proof of my pleasure ! A bit disappointed with the noise pan that is grungy and useless for me, and the LFO that can't restart for each trig, but hey, it's a DS-8
So a huge thanks to you all for all the data and help provided, there would be no success without this forum ! |
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nuclearsound
Joined: Jul 16, 2013 Posts: 24 Location: Nantes, France
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Posted: Sun Apr 11, 2021 6:10 am Post subject:
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Hello and sorry for redigging this topic after so long but in the end, apart from the low volume, I can live with that, I never reached the famous pew pew sound that we mostly all are looking for with a DS-8 :
The VCo is either : stable with no LFO, or LFO'ed (with no LFO retrig at each piezo or CVin hit...), but never do I get a VCo with a possible enveloppe (high pitch with quick attack, then fading to low pitch).
As per the various videos i see on youtube, the effect I' looking for is the sweep. But at home my sweep pot only slightly detunes the vco, but does not apply an envelope to it...
Does it sound familiar to anyone ?
Thanks for your help |
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