Quiet Flanger?

[Connoisseur of Distortion]

After my success with the zombie chorus, i have decided to make a flanger. What flanger, i have no idea. I want it to make very little to no sweep noise (you know, the grating keeeeeooooowwwww that they make with heavy distortion), have plenty of knobs to mess around with, and a good sweep range. Any suggestions?

(actually, i'd give up knobs and range if they thing doesn't make any noise!  :oops: )

[Mark Hammer]

If you go to about page 9 or so of my website (hammer.ampage.org), there are a number of Craig Anderton design flangers posted.  The one in DEVICE (issue 9 and 10) is apparently quite quiet.  It uses a 570 compander chip.

Flangers generally tend to be a bit quieter than chorusses because the clock speed/frequency is generally higher and often ell outside the audio range. On the other hand, any time you insert regeneration into a device, even small amounts of noise can be multiplied.  The design in DEVICE takes the recirculation feed from after the expansion stage of the compander, making it a very quiet regen.  Note that the project is spread over 2 issues, with corrections in the second issue.

[StephenGiles]

Mark, the AMS100 is very quiet. Didn't it use RC4739s?
Stephen

[Connoisseur of Distortion]

alright. thanks for the suggestion! where could i find a 570? also, has anyone made a PCB of this thing? i have a knack for bad layouts...  :roll:

[Mark Hammer]

Mark, the AMS100 is very quiet. Didn't it use RC4739s?
Stephen

Yes it did, but only because these represented best audio quality for the dollar in 1979.  I think we've moved on from there in the succeeding 26 years, both in terms of quality and in terms of what is obtainable at low cost.

[StephenGiles]

That means the AMS Flanger PCB needs to be updated for standard 8pin dual opamps, unless it has already been done.
Stephen

[Mark Hammer]

Hell, I didn't even know someone had made a layout.  Is this true?

[Connoisseur of Distortion]

where could this layout be found...?