Doepfer

why didn't you just say that to begin with? i'm not trying to make an issue, but my phaser is also noisey as the original poster said...if you would have simply wrote "mine is as well, they all are, this is how i deal with it" i would have never responded to your post, i deal with it as well...

but i still would like to know if there is an adjustment to be made that will help with the noise...

thanks,
rg

----- Original Message ----
From: Bakis Sirros <synth_freak_2000@yahoo.com>
To: Doepfer_a100@yahoogroups.com
Sent: Saturday, February 23, 2008 4:34:10 PM
Subject: Re: [Doepfer_a100] A-125 phaser (noise issue)

yes, but noise is common in phasers...

--- Ross Goniakowski <carfull@sbcglobal. net> wrote:

> sorry...i said i believed you said fix, i accidently
> deleted the post before responding.. .
> 
> so now i say it's not a solution, it's a work
> around...it doesn't deal with the noise of the phase
> shifter, it masks it...
> 
> rg
> 
> 
> ----- Original Message ----
> From: Bakis Sirros <synth_freak_ 2000@yahoo. com>
> To: Doepfer_a100@ yahoogroups. com
> Sent: Saturday, February 23, 2008 1:20:32 PM
> Subject: Re: [Doepfer_a100] A-125 phaser (noise
> issue)
> 
> that's why i said an easy solution, not a fix ;-)
> 
> --- Ross Goniakowski <carfull@sbcglobal. net> wrote:
> 
> > i accidently deleted a reply to this post from
> > Bakis, i believe he said an easy fix was to use a
> > VCA after the phase shifter...
> > 
> > i don't consider that a fix, i consider that a
> > work-around. ..to fix the problem would be to
> reduce
> > the noise level, not hide it...depending on the
> > source material, that may or may not be an
> > appropriate solution....
> > 
> > 
> > rg
> > 
> > 
> > ----- Original Message ----
> > From: astroschnautzer <astroschnautzer@ yahoo.com>
> > To: Doepfer_a100@ yahoogroups. com
> > Sent: Saturday, February 23, 2008 8:46:52 AM
> > Subject: [Doepfer_a100] A-125 phaser (noise issue)
> > 
> > I just got this module ,seems to work ok besides
> its
> > terribly noisy. My soundcards noisefloor 
> > is at about -90db withoout this plugged in whe i
> > plug it in it shows -47db so over 40 db of 
> > noise... Is this normal for this module or should
> I
> > send it back?
> > 
> > 
> > 
> > 
> > [Non-text portions of this message have been
> > removed]
> > 
> > 
> 
> Bakis Sirros - Parallel Worlds / Interconnected /
> Memory Geist
> [Doepfer_a100] group owner
> http://www.parallel -worlds-music. com
> http://www.myspace. com/parallelworl dsmusic
> http://www.myspace. com/interconnect edmusic
> http://www.myspace. com/memorygeist
> http://www.DiN. org.uk
> http://www.musicama ximamagnetica. com
> http://www.shimarec ords.co.uk
> http://www.rubber. gr
> Athens-Greece
> 
> ____________ _________ _________ _________ _________
> _________ _
> Looking for last minute shopping deals? 
> Find them fast with Yahoo! Search. http://tools.
> search.yahoo. com/newsearch/ category. php?category=
> shopping
> 
> 
> 
> [Non-text portions of this message have been
> removed]
> 
> 

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner
http://www.parallel -worlds-music. com
http://www.myspace. com/parallelworl dsmusic
http://www.myspace. com/interconnect edmusic
http://www.myspace. com/memorygeist
http://www.DiN. org.uk
http://www.musicama ximamagnetica. com
http://www.shimarec ords.co.uk
http://www.rubber. gr
Athens-Greece

____________ _________ _________ _________ _________ _________ _
Never miss a thing. Make Yahoo your home page. 
http://www.yahoo. com/r/hs



[Non-text portions of this message have been removed]

don't know about any adjustment.


--- Ross Goniakowski <carfull@sbcglobal.net> wrote:

> why didn't you just say that to begin with? i'm not
> trying to make an issue, but my phaser is also
> noisey as the original poster said...if you would
> have simply wrote "mine is as well, they all are,
> this is how i deal with it" i would have never
> responded to your post, i deal with it as well...
> 
> but i still would like to know if there is an
> adjustment to be made that will help with the
> noise...
> 
> thanks,
> rg
> 
> 
> ----- Original Message ----
> From: Bakis Sirros <synth_freak_2000@yahoo.com>
> To: Doepfer_a100@yahoogroups.com
> Sent: Saturday, February 23, 2008 4:34:10 PM
> Subject: Re: [Doepfer_a100] A-125 phaser (noise
> issue)
> 
> yes, but noise is common in phasers...
> 
> --- Ross Goniakowski <carfull@sbcglobal. net> wrote:
> 
> > sorry...i said i believed you said fix, i
> accidently
> > deleted the post before responding.. .
> > 
> > so now i say it's not a solution, it's a work
> > around...it doesn't deal with the noise of the
> phase
> > shifter, it masks it...
> > 
> > rg
> > 
> > 
> > ----- Original Message ----
> > From: Bakis Sirros <synth_freak_ 2000@yahoo. com>
> > To: Doepfer_a100@ yahoogroups. com
> > Sent: Saturday, February 23, 2008 1:20:32 PM
> > Subject: Re: [Doepfer_a100] A-125 phaser (noise
> > issue)
> > 
> > that's why i said an easy solution, not a fix ;-)
> > 
> > --- Ross Goniakowski <carfull@sbcglobal. net>
> wrote:
> > 
> > > i accidently deleted a reply to this post from
> > > Bakis, i believe he said an easy fix was to use
> a
> > > VCA after the phase shifter...
> > > 
> > > i don't consider that a fix, i consider that a
> > > work-around. ..to fix the problem would be to
> > reduce
> > > the noise level, not hide it...depending on the
> > > source material, that may or may not be an
> > > appropriate solution....
> > > 
> > > 
> > > rg
> > > 
> > > 
> > > ----- Original Message ----
> > > From: astroschnautzer <astroschnautzer@
> yahoo.com>
> > > To: Doepfer_a100@ yahoogroups. com
> > > Sent: Saturday, February 23, 2008 8:46:52 AM
> > > Subject: [Doepfer_a100] A-125 phaser (noise
> issue)
> > > 
> > > I just got this module ,seems to work ok besides
> > its
> > > terribly noisy. My soundcards noisefloor 
> > > is at about -90db withoout this plugged in whe i
> > > plug it in it shows -47db so over 40 db of 
> > > noise... Is this normal for this module or
> should
> > I
> > > send it back?
> > > 
> > > 
> > > 
> > > 
> > > [Non-text portions of this message have been
> > > removed]
> > > 
> > > 
> > 
> > Bakis Sirros - Parallel Worlds / Interconnected /
> > Memory Geist
> > [Doepfer_a100] group owner
> > http://www.parallel -worlds-music. com
> > http://www.myspace. com/parallelworl dsmusic
> > http://www.myspace. com/interconnect edmusic
> > http://www.myspace. com/memorygeist
> > http://www.DiN. org.uk
> > http://www.musicama ximamagnetica. com
> > http://www.shimarec ords.co.uk
> > http://www.rubber. gr
> > Athens-Greece
> > 
> > ____________ _________ _________ _________
> _________
> > _________ _
> > Looking for last minute shopping deals? 
> > Find them fast with Yahoo! Search. http://tools.
> > search.yahoo. com/newsearch/ category.
> php?category=
> > shopping
> > 
> > 
> > 
> > [Non-text portions of this message have been
> > removed]
> > 
> > 
> 
> Bakis Sirros - Parallel Worlds / Interconnected /
> Memory Geist
> [Doepfer_a100] group owner
> http://www.parallel -worlds-music. com
> http://www.myspace. com/parallelworl dsmusic
> http://www.myspace. com/interconnect edmusic
> http://www.myspace. com/memorygeist
> http://www.DiN. org.uk
> http://www.musicama ximamagnetica. com
> http://www.shimarec ords.co.uk
> http://www.rubber. gr
> Athens-Greece
> 
> ____________ _________ _________ _________ _________
> _________ _
> Never miss a thing. Make Yahoo your home page. 
> http://www.yahoo. com/r/hs
> 
> 
> 
> [Non-text portions of this message have been
> removed]
> 
> 


Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner
http://www.parallel-worlds-music.com
http://www.myspace.com/parallelworldsmusic
http://www.myspace.com/interconnectedmusic
http://www.myspace.com/memorygeist
http://www.DiN.org.uk
http://www.musicamaximamagnetica.com
http://www.shimarecords.co.uk
http://www.rubber.gr
Athens-Greece


      ____________________________________________________________________________________
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Hi Ross

> why didn't you just say that to begin with? i'm not trying to make an issue, but my phaser is also noisey as the original poster said...if you would have simply wrote "mine is as well, they all are, this is how i deal with it" i would have never responded to your post, i deal with it as well...
> 
> but i still would like to know if there is an adjustment to be made that will help with the noise...

Phasers like the A-126 (but most other analogue ones too) are 
constructed as a row of six allpass filter stages in series, with a 
frequency control by an FET. In total you have 9 opamp stages in the 
signal chain. Each opamp stage adds its noise. This is no fault of de 
Doepfer design, but a basic problem of this effect.

I don't have the A-101-3. There also six filter stages are used, but the 
frequency control is done by an photoresistor instead of the FET. Maybe 
someone who owns both could compare the A126 to the A101-3 regarding its 
noise.

Florian

> but i still would like to know if there is an adjustment to be
> made that will help with the noise...
>
> thanks,
> rg

There is no way to adjust the noise. The noise is caused by the working
principle of the A-125: six-stage all pass filter (= phase shifter) made
with FETs (field effect transistors) as variable resistors. All phasers
based on this principle have nearly the same noise floor (e.g. the M-172
from Rolands System 100M). But if you use the max. audio signal level (i.e.
before clipping occurs) and put the final VCA/VCF (if there is one in your
patch) post the phaser the remaining noise should be not an issue.

Best wishes
Dieter Doepfer