In the "to do" box.
I thought I'd upload some pics of an old Driscoll synth which is in need of restoration.
I've already got 3 panels
so Ive decided to call these panels 4 & 5.
Panel 4
These are fairly rare.
The Driscoll was designed & built in the 70s by Australian composer/designer/engineer Julian Driscoll.
at La Trobe University (Melbourne, Australia) between 1977 and about 1982.
Its good I think to document things before I start tinkering around.
D-slope module closeup x 2
An envelope generator
Very much like the Serge DSG
Can be used as an oscillator, EG, ... lots of things
Very flexible module.
This panel has 8 D-slope generators
The RVG (random voltage generator) module contains a comparator, sample and hold, white noise, pink noise, low frequency noise, and a glide circuit.
The sample and hold ....
This one is a bit odd.. It seems to hold while the clock input is high, but lets the input signal pass when the clock is low.
Great for modulating the PWM on the clock signal
Also, I think the comparator hi/low state is inverted ... need to check this..
A comparator is like a switch.comes in handy for converting changing voltages into binary low/high states.
This is the boat for the above panel.
-----------------------------------------------------------------------------
Panel 5
A VCO, 2 x envelope generators
and a mixer section
A close up of VCO 1
PSU is +/-15v, +5v
CV is 0-5v
Oscillators are +/- 2.5v
The VC Stereo Mixer/Panner
These dual mixers are cool.
Thanks to Phil - J for his questions regarding the mixers
They each have three inputs.
My guess is that Hi Out stands for high impedance
And that LO OUT is
Low Impedance
UG in stands for Unity Gain in ??
Unity Gain suggests there might be an op-amp in the input with a gain of 1
Links
No comments:
Post a Comment