Summary of Contents for Mode Machines OMF-1
- Page 1 OMF-1 Analog filter Rack OMF-1 Analogue Filter Rack User Manual 2015 Written by: Tony Allgood Oakley Sound Systems Carlisle United Kingdom www.modemachines.com...
- Page 2 This allows complex filter types to be made when the two outputs are mixed together in various degrees. A wide range single ended pre-amplifier is included. You can use the OMF-1 with virtually any input from guitars to synthesisers. A peak indicator will allow you to monitor overloads, although the OMF-1 is designed to overdrive beautifully.
- Page 3 OMF-1 Analog filter Rack CV and gate inputs are available for connection to a modular synth or midi-CV converser. The CV input will control the filter frequency, and the gate control will trigger the envelope generator if selected. The board is designed to be powered by an external AC supply of 15 to 22V rms.
- Page 4 OMF-1 Analog filter Rack signal to be at full strength with no inversion of the signal. Fully counter clockwise allows the signal to be at full strength but with inverted properties. The two types actually sound identical on their own, but when mixed with the other two outputs strange new filter sounds can be made.
- Page 5 OMF-1 Analog filter Rack Up: Controls the speed at which the envelope generator or follower ramps upwards • to its maximum output value. Down: Controls the speed at which the envelope level falls from its maximum value • back to zero.
- Page 6 OMF-1 Analog filter Rack In the AR mode, the output will stay high as long as the gate is active high. In other words the output is ‘sustained’. Once the gate is turned off and goes low, the output of the EG will fall.
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Page 7: Power Supply
If the voltage does fall below the required operating voltage of the OMF-1 the most obvious sign is an audible hum from the outputs. You will not damage the OMF-1 by doing this although any connected amplifier or speaker system may object to the humming. - Page 8 The last OMF-1 was sold in 2005. There had been a second issue of the PCB in 2004 but this was to be the last run of boards for a while. However, repeated requests for the board to be reinstated finally had their desired effect.
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Page 9: Final Comments
OMF-1 Analog filter Rack Final Comments I hope you enjoy using the OMF-1. For any questions or extra information, latest version of the Manual and other support files, please visit www.modemachines.com or contact us directly at info@modemachines.com. If you have any problems with the module, an excellent source of support is the Oakley Sound Forum at Muffwiggler.com.
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