M - Resonator Manual
M - Resonator Manual
page 2
Thank you for using the JoMoX M-Resonator!
The M-Resonator is a stereo filter build up from true analog discreet
circuitry with differential envelopes and lots of modulation capabilities.
Thanks to a an advanced circuitry the envelope follower will respond
independendly from input levels.
How to hook up the unit
Before connecting please turn all other devices off.
On the back panel of the M-Resonator you will find these connections:
Power supply
Please connect the provided wall wart adapter to the 9V AC~ power
jack. If, for any reason, you cannot use the orginal wall wart adapter,
please take care to use an alternate current power supply with 9V
AC~ 300mA.
Never use an AC/DC adapter as the M-Resonator might get damadged!
Audio inputs
Please connect the audio signals to be processed here. If you only
need a mono signal, please use the left input.
Audio outputs
The output signals of both filters are lead out here.
Description of user interface
Attack
Adjusts the rising time of the envelope follower.
Release
Adjusts the release time of the envelope follower.
Please note that you are adjusting the parameters of the referential
envelope.
Inside theres 2 envelope followers: one original and one changeable.
The actual envelope modulation signal is derived then by the orignal
envelope divided by the changed envelope. Thus, you have a level
independent envelope (within certain ranges). That means, you
have to tweak and twiddle a bit to get the desired action. The
resulting envelope action also strongly depends of the kind of the
input signal.
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Bypass
If this button is pressed, the processed signal is on the outputs. If
it is released, the input is bypassed to the output.
Env Amt 1
This knob determines how the envelope signal modulates the cutoff
frequency of the left filter (Envelope Amount). In center position,
the cutoff of the filter is not changed. The more you turn it to the
right, the more the filter cutoff gets opened, and the corresponding
red LED lights up. If you turn it to the left, the filter gets closed in
the rhythm of the envelope signal. In this case the green LED of
the 2-color LED lights up.
Env Amt 2
Same like Env Amt 1, only the cutoff frequency of the right filter
is changed.
Gain
If you press this button, the input signal can be pad at 10 dB.
Mix 2-1
With this knob you can mix the output signal of the right filter with
positive or negative phase into the left filter. At center position no
modulation occurs.
Mix 1-2
Same with Mix 2-1; Opposing to this the ouput signal of the left
filter gets mixed into the right filter.
Cutoff
These knobs change the corner frequency of both low pass filters.
The more it is turned to the left, the less high frequencies stay in
the filtered signal.
Feedback
In center position there is no feedback. Turning to the right resembles
the regular resonance of a normal music filter. If you turn it to the
left though the filter reaches a fairly unstable state by positive
feedback. Oscillations appear that ar similar to LFOs, and in extreme
positions very deep frequent bass tones can result.
Caution: On some adjustments very deep and strong bass signals
can be created that might damadge your speakers if you dont care
for a signal limitation!
FM 1-2
Same with FM 1-2, only that the left modulates the right filter.
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Quick start
Turn both envelope amounts, Mix2-1, Mix1-2 and the feedback
knobs to center postition; turn both FM knobs to zero. If you assert
a signal to the inputs and tweak the cutoff knobs, the M-Resonator
will act like a normal stereo low pass filter. Now lets look at the
feedback knobs. A turn to the right produces the known filter
resonance whisteling, but in the opposite direction the knob creates
a totally different reaction. At low levels you can hear a gained bass
until the filter starts to create very deep frequent oscillations. Recenter them again to obtain a neutral position. Open both filter
cutoffs (turn cutoff fully clockwise). Turn the envelope amounts to
the left and assert a rhythmic signal. Watch and hear the filters
close and open in the rhythm of the music signal.
The other knobs cause very complex interactions between both
filters and therefore it is not possible to describe these actions in
an easy manner. They are very much dependend from the audio
material and knob settings relative to each other. Sometimes only
a very little change of angle of one knob causes the whole sound
to change into something totally different.
At this point we like to encourage you to tweak and twiddle and
experiment with this unique filter box. Note that the structure of
the stereo filter is symmetrical. So it is very interesting to create
mirrored knob settings that feed back signals in both ways and
form the 2 filters into a multi-resonant complex feedback machine.
Little alterations from symmetrical settings let the chaos arise...
And finally...
Service, tips and tricks
are available at JoMoX GmbH
Internet http://www.jomox.de
Postal address JoMoX GmbH/ Körtestr. 10/
10967 Berlin / Germany
Fax 0049 - (0)30 - 61702574
E-mail mail@jomox.de
We wish you lots of joy and satisfaction with our units!
Berlin, May 2006
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