15 Dec
2021
15 Dec
'21
10:31 a.m.
On Wed, 15 Dec 2021 02:06:19 +0100
Robin Gareus <robin(a)gareus.org> wrote:
On 12/14/21 11:02 PM, Gerhard Zintel wrote:
<snip>
Exactly! That was very common with a lot of 'portable' electronic organs of
the 1960s too, and a bit of a nightmare. There was quite a wide range in
photocell responses, along with changing output from the bulb depending on age
and supply stability.
--
Will J Godfrey
https://willgodfrey.bandcamp.com/
http://yoshimi.github.io
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
Now I have the following questions:
Does anyone of you know if the original swell pedal of the B3 is
changing the volume in a linear or logarithmic way?
Neither, and it is complicated.
Since the gain is applied before the pre-amp, many refurbished B3s use a
lamp and photo-cell/resistor to reduce hum, so any mapping is possible
there.