clintrubber
Well-known member
Hi,
In these dark economic times we should be careful with resources
& re-use as much as possible. How about that for a first line ? :
But what I actually want to say: blend-circuits like the original circuit
of SSLtech-Keith and the unbalanced version of Livingnote-Lukas can easily
be used for a bit more than 'just' crossfading.
Dunno if has been mentioned before already, but for instance the PCBs
that I got from Lukas (see further on in this thread: http://www.groupdiy.com/index.php?topic=8360.0 & thanks again) beg to be used in a multi-purpose box.
We know that as designed these can crossfade between two stereo sources, like for
instance the dry & wet signal of a compressor.
Adding just a few additional things nicely expands the possibilities:
#1.
With an added SPDT-switch the PCB can be a neat Mid/Side-encoder/decoder as well.
#2.
With another switch (DPDT) and an added mono-pot you can select dual-mono or stereo crossfading. The former handy for pedalboards for instance.
etc, etc, various added modes will be possible
Lastly, because of the stand-alone character of the unit I've added a few 'utility'-resistors:
100 Ohm series resistors and 100k tie-down resistors at the output. I've kept the DC-coupled inputs, but you can add AC-coupling if you want. And if you want you can add reversed diodes to the supply rails for protection. And HF-filtering etc etc but then it's about time for an expanded PCB.
Let's call it the "Flip-n-Morph" TM
All in all, it's fun to see that simple variations w.r.t. addition/subtraction as realized by a few opamps & resistors can result in circuits fulfilling all kinds of different functions.
But since the required circuits are quite alike it's both tempting & easy to make them behave in different modes at the flick of a switch (in combination with a 'smart I/O' configuration).
The info above and the schematics from Keith & Lukas will be enough to derive the schematic, but I will nevertheless post a schematic v'soon.
(Let me add right away already that it'll be for own use only;
no money-making from it please, otherwise massive doom will be on your path-of-life )
Enjoy & feel free to chime in with ideas for added modes
Bye,
Peter
In these dark economic times we should be careful with resources
& re-use as much as possible. How about that for a first line ? :
But what I actually want to say: blend-circuits like the original circuit
of SSLtech-Keith and the unbalanced version of Livingnote-Lukas can easily
be used for a bit more than 'just' crossfading.
Dunno if has been mentioned before already, but for instance the PCBs
that I got from Lukas (see further on in this thread: http://www.groupdiy.com/index.php?topic=8360.0 & thanks again) beg to be used in a multi-purpose box.
We know that as designed these can crossfade between two stereo sources, like for
instance the dry & wet signal of a compressor.
Adding just a few additional things nicely expands the possibilities:
#1.
With an added SPDT-switch the PCB can be a neat Mid/Side-encoder/decoder as well.
#2.
With another switch (DPDT) and an added mono-pot you can select dual-mono or stereo crossfading. The former handy for pedalboards for instance.
etc, etc, various added modes will be possible
Lastly, because of the stand-alone character of the unit I've added a few 'utility'-resistors:
100 Ohm series resistors and 100k tie-down resistors at the output. I've kept the DC-coupled inputs, but you can add AC-coupling if you want. And if you want you can add reversed diodes to the supply rails for protection. And HF-filtering etc etc but then it's about time for an expanded PCB.
Let's call it the "Flip-n-Morph" TM
All in all, it's fun to see that simple variations w.r.t. addition/subtraction as realized by a few opamps & resistors can result in circuits fulfilling all kinds of different functions.
But since the required circuits are quite alike it's both tempting & easy to make them behave in different modes at the flick of a switch (in combination with a 'smart I/O' configuration).
The info above and the schematics from Keith & Lukas will be enough to derive the schematic, but I will nevertheless post a schematic v'soon.
(Let me add right away already that it'll be for own use only;
no money-making from it please, otherwise massive doom will be on your path-of-life )
Enjoy & feel free to chime in with ideas for added modes
Bye,
Peter