Doepfer

thanks for your reply...i suspected that was the case, but i wasn't sure...it has been many years since i last used an analog phase shifter!

 also: i wasn't trying to be rude to Bakis, i just thought the issue was being a bit confused...humble apololgies for not being more tactful...

rg


----- Original Message ----
From: "hardware@doepfer.de" <hardware@doepfer.de>
To: Doepfer_a100@yahoogroups.com
Sent: Monday, February 25, 2008 1:59:26 AM
Subject: AW: [Doepfer_a100] A-125 phaser (noise issue)

> 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




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