hello ingo,
first of all,dieter is away from the office for the
next four days.
regarding the new version a131's:that's really
wierd,as my four new version a131's all have the same
harsh sound and noise that i really don't like!of
course, they amplify the signal much more than the old
version a131's,but their noise is very annoying for my
taste.whenever i use my new vesion a131's for smooth
sounds(like bass)i never turn their input knobs(even
the input1)to more than 3-4,because of their annoying
harsh sound.as for the a133, i haven't ,still, used it
for audio,only for cv processing.
bakis.





--- selfoscillate < synaptic_music@... > wrote:

>
> hello zoran,
>
> yesterday i had just little time in the studio,
> i haven't recorded anything, so please trust me :-)
> anyway, i managed to compare an old and a new a131.
> i tried sawtooth, triangle and sine after another,
> coming from an a111. the a111 output was patched
> directly into the vca in question. first i used
> a constant +5v signal to keep the vca's open all
> time.
> after trying this, i used an a140 envelope instead.
>
> the newer a131 inputs are more sensitive, setting
> the
> input attenuator to approximately 6.5 resulted in
> the
> same loudness as with an old a131 set to 10.
> i used this setting to check the hum of the vca's.
>
> i found that the newer a131 (or at least mine)
> doesn't
> produce more hum than the old one. maybe only a
> slight
> nuance, barely noticeable, and not as horrible as in
> your wav-files. you really need good ears to find
> something like hum on my a131's and you have to
> search
> for it until you hear it. that's why i couldn't
> really
> understand your problem, until i heard your posted
> files.
> your a131 doesn't sound like mine, absolutely not.
> i don't have this issue on my a131's, no matter
> if old or new. ok, the new a131 is louder when
> it is unattenuated, sounding somewhat harsher then,
> but still there is not that much hum.
>
> i tried an a132 also and it sounded a bit smoother
> than
> the a131, because it is linear. i'd say that our
> a132's
> sound the same.
>
> another funny thing is that my a133 polarizer
> produces
> much more hum than any other vca in my system, even
> when it isn't actually amplifying a signal and this
> also makes me wonder. it kept me from buying another
> polarizer yet, but maybe my a133 and your a131 have
> the same problem
>
> could it be that also other parts have been replaced
> during the last few months maybe we can have some
> information on this from dieter doepfer himself.
> i hope that he is reading this.
>
> best wishes
>
> ingo
>
>
>
>

=====
Bakis Siros
Parallel Worlds / Polariton
Athens-Greece
1 group owner
http://www.rubber.gr
http://www.shimarecords.co.uk
http://www.ward12.com

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