AFG bleed through noise on the bus?

Cwejman, Livewire, TipTop Audio, Doepfer etc... Get your euro on!

Moderators: luketeaford, Joe., lisa, Kent

Post Reply
User avatar
Badr0b0t
Knob Twiddling Machine
Posts: 599
Joined: Mon Nov 16, 2009 4:03 am
Location: SF Bay Area

AFG bleed through noise on the bus?

Post by Badr0b0t » Sun Nov 22, 2009 3:07 pm

I have an AFG in the top row of a 9u A-100p9. On that same bus is the Frequensteiner. Plugging into just the Frequensteiner I can hear the AFG and when I move the frequency knob around I can hear the frequency changing.

Is the AFG just noisy like this? The Hertz and Z3000 don't seem to have the same issue. Considering moving the AFG to another bus to see if that helps.

Anyone else have any input on this before I start moving stuff around?

Cheers

User avatar
Badr0b0t
Knob Twiddling Machine
Posts: 599
Joined: Mon Nov 16, 2009 4:03 am
Location: SF Bay Area

Post by Badr0b0t » Sun Nov 22, 2009 3:13 pm

To clarify. NOTHING is patched or plugged in other than my line out from the Frequensteiner to my mixer.

User avatar
Waz
Wiggling with Scurvy
Posts: 2746
Joined: Mon Mar 02, 2009 1:36 pm
Location: Detroit

Post by Waz » Sun Nov 22, 2009 3:32 pm

It's your frequensteiner. This is a fairly common problem with that filter. It picks up signals from other modules.

User avatar
Badr0b0t
Knob Twiddling Machine
Posts: 599
Joined: Mon Nov 16, 2009 4:03 am
Location: SF Bay Area

Post by Badr0b0t » Sun Nov 22, 2009 4:01 pm

Ah. Makes sense. Wondering if putting it on a bus without an OSC will help? Thinking about shifting around my modular to have the freqst. on a bus with nothing but ADSR, mixers, etc.

I'll let you know how that goes.

User avatar
jonkull
Lowest Common Denominator Patcher
Posts: 2506
Joined: Mon Nov 24, 2008 7:02 pm
Location: Burbank, CA

Post by jonkull » Sun Nov 22, 2009 4:30 pm

I had this problem and solved it by using a Power One PSU rather than the Doepfer PSU I was using. Though that may have just been a coincidence.
If only someone would invent a synth that would allow the end user to determine the functionality. You could pick which functions were important to you in 'modules'. A 'modular', if you will. - Stretta

User avatar
SingleCell
Common Wiggler
Posts: 117
Joined: Fri Apr 17, 2009 9:18 pm
Location: Hollywood CA

Post by SingleCell » Mon Nov 23, 2009 9:36 am

I think with it's multitude of waveforms, the AFG is the 'loudest' oscillator in my setup, and yea it bleeds the most into my Frequensteiner.

I found that putting a filter like the Boogie into self oscillation produces a hot enough signal that it too will bleed audibly into the Frequensteiner.

I also found that plugging the Frequensteiner into a different bus board than modules that put out such hot signals will minimize (but not eliminate) the bleed.

I'm using my own cases, built around the Doepfer DIY kits and, at least in my case(s), many modules have long enough ribbon cables that they can plug into the busboard that's behind the row of modules below, so while my Frequensteiner is mounted right between my AFG and Boogie, it isn't on the same bus board.

User avatar
premieklovn
Wiggling with Experience
Posts: 479
Joined: Sat Jul 04, 2009 2:07 pm
Location: Oslo

Post by premieklovn » Mon Nov 23, 2009 5:26 pm

I'm also experiencing bleed but it's not really bothering me. It reminds of my good ol' Roland RS09 which had a wonderful "hold all keys down"-bleed. Made a very nice noise.

mattsynth
Learning to Wiggle
Posts: 6
Joined: Thu Oct 22, 2009 9:25 am

Post by mattsynth » Wed Nov 25, 2009 9:19 am

It is the Frank filter that does this bleeding. The rez knob is also scratchy on this filter. That is the nature of a great sounding filter. Love the sweet spot on this filter.

User avatar
itijik
Three eyed monster
Posts: 1808
Joined: Tue Nov 24, 2009 9:31 am
Location: California, USA

Post by itijik » Wed Nov 25, 2009 9:28 am

That scratchy resonance pot has always bugged me, I wish there was a fix/mod for that.

Post Reply

Return to “Eurorack Modules”