Rossum Electro-Music LINNAEUS Manual

LINNAEUS
Thru-Zero State Variable Filter
Thanks for purchasing (or otherwise acquiring) Linnaeus. This guide will get you up
and running with a minimum of fuss. For lots more details (and some incredibly cool
alternate functionality), be sure to check out the full owners manual at:
www.rossum-electro.com/support/documentation
What is this thing?
Linnaeus is a stereo state variable filter
that provides the unique ability to linearly
modulate its resonant frequency through
zero into negative frequency. With
extensive voltage control of nearly every
parameter, Linnaeus lets you manipulate
its response curve in new ways, to create
both subtle and dramatic timbral effects.
Linnaeus's channel output response
characteristics are independently and
continuously variable from lowpass,
through bandpass, highpass and notch,
to low and high shelving. Voltage
control of the response characteristics is
independently selectable for each of the
two channels.
The linear thru-zero modulation index
can be set to values from 0 to 8x by an
internal VCA controlled by the integrated
modulation oscillator and/or an external
linear FM modulation input. The
modulation oscillator has a continually
variable output waveform and can track
the filter's exponential frequency or
operate independently.
And with a "one-knob-per-parameter"
interface, Linnaeus inspires sonic creativity
that invites (and rewards) real-time
interaction.
Installation
While all Rossum Electro-Music modules
are protected against damage to the mod-
ule or your system from reverse polarity,
care should still be taken to connect the
power cable correctly.
Plug the 16-pin connector into the header
on the rear of the module such that the red
stripe on the cable (the -12V side) is on the
same end of the header as the "Red Stripe
(-12V)" text on the PCB.
Linnaeus requires a maximum of 155mA of
+12V and 36mA of -12V.
We have included both M3 and M2.5 (for
vector rails) mounting screws. Use what
fits your system. If rack rash is of concern
to you, use the included nylon washers
when mounting Linnaeus in your case.
What's with the egg?
The Functional Overview on the other
side of this card describes Linnaeus as
originally conceived and designed by
Dave. However, late in the beta testing
process, our good friend and tester, Chris
Meyer, raised the possibility of alternative
behavior that would let Linnaeus function
as a self-contained (i.e., no input required)
stereo oscillator with some really powerful
timbral capabilities.
While we were initially hesitant to try
to shoehorn the new functions into
the existing interface, once Dave had
prototyped them, it was clear to us all that
they were just too cool not to include.
So we've provided them in the form of
alternative firmware accessed by pressing
and holding the button.
Check the manual for the details.