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Viper MF-105B - page 1
Understanding and Using Your Moogerfooger MF-105B Bass MuRF TABLE OF CONTENTS Getting Started............................................3 Frequencies and Filters...............................5 The Bass MuRF’s Filters............................7 Envelope Generators.................................10 Sequencers and Pattern Generation.......... 1 ...
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Viper MF-105B - page 2
Welcome to the world of Moogerfooger Analog Effects Modules! Your model MF-105B Bass MuRF is a rugged, profes- sional-quality instrument, designed to be equally at home on stage or in the studio. Its great sound and jaw-dropping effects come from state-of-the-art analog circuitry and quality engineering that you have come to expect from Moog Music ...
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Viper MF-105B - page 3
GETTING STARTED Here are some simple instructions on how to quickly plug in and try out your MF-105B. 1. Unpack your MF-105B. Place it on a table while you become familiar with its features. 2. Check that the power adaptor has a nominal rating of +9 volts, providing at least 300 mA (milliamperes) of current and is also rated at your country’s sta ...
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Viper MF-105B - page 4
4. Connect an instrument cable from the LEFT/MONO jack to a line-level input on your amp or mixer. Turn the volume control on your amp down but not off. 5. Connect an instrument cable from your signal source to the AUDIO IN jack. You can feed virtually any instrument-level or line-level signal through your MF-105B. Examples are bass, keyboard, ther ...
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Viper MF-105B - page 5
instrument’s tone. You will hear the level of each of the 8 lters being turned up and down automatically in sequence by the Animation at a tempo determined by the RATE control. Note that changing the ENVELOPE control affects the shape that turns the lters up and down. The PATTERN rotary switch selects different patterns that dictate the seq ...
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Viper MF-105B - page 6
sound. Some types of lters (like the bass and treble controls on your sound system) have subtle, gentle effects on a sound’s timbre. Other types of lters have stronger and more dramatic effects, and are frequently used as vital elements in the music-making process. Strong lters include phasers, angers, and wah-type resonant lters. ...
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Viper MF-105B - page 7
The Bass MuRF’s FILTERS The Bass MuRF’s seven resonant lters have xed center frequencies and a shelving(lowpass) lter that has a xed cutoff frequency. These frequencies are shown on the legend underneath the lters’ sliders. Their frequencies are: 110 Hz(shelving lter), 160 Hz, 240 Hz, 350 Hz, 525 Hz, 775 Hz, 1.2K and 1.8K. E ...
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Viper MF-105B - page 8
3) Make sure the effect is on, and MIX is at 10. 4) Connect just the “left/mono” output to your amplication You may want to experiment with the panel controls and switches as we discuss each of the parameters. 5) Now, play a bright, sustained sound, preferably of low pitch into the Bass MuRF. Figure 6 shows the MF-105B’s basic frequency re ...
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Viper MF-105B - page 9
done two ways, depending on the position of the BANK slider switch. The switch, located below the PATTERN selector switch is labeled BANK A or B/LFO. When the slider is in the “A” position, the lters’ center frequencies can be shifted by an expression pedal (such as the Moog EP-1) or CV plugged into the LFO/SWEEP Jack. To hear how this wor ...
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Viper MF-105B - page 10
ENVELOPE GENERATORS Now that we have explained the Bass MuRF’s lters, let’s proceed with some more denitions to explain the Animation function of the Bass MuRF. The term “Envelope” is used to describe the changes that occur to a musical sound, from its start to its end. A musical sound can have a rapid onset, like the plucking of a st ...
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Viper MF-105B - page 11
SEQUENCERS and PATTERN GENERATION A Sequencer is used to generate reoccurring rhythmic patterns, often by triggering sequences of notes in synthesizers or drum machines. However sequencers can be used for purposes other than triggering notes - they can be set up to create reoccurring changes of timbre as well. Vintage sequencers were typically desi ...
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Viper MF-105B - page 12
The rows going from bottom to top are the individual lters. Illustrations of all the Patterns are in Appendix A, page 22. Return to the basic setting shown in gure 2, which features pattern 2. As you play your instrument through the Bass MuRF, pay attention to the sound of the effect and how it corresponds to gure 10. You should hear the A ...
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Viper MF-105B - page 13
and the transitions from lter to lter blurred, as the Attack and Decay become so long that the effect is crossfading from one lter to the next. 5) Finally, turn the ENVELOPE control up to 8. The effect now sounds “backwards” as the attack time is now smooth but fast, and the decay is abrupt. What happens as you change the ENVELOPE cont ...
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Viper MF-105B - page 14
THE AUDIO LEVEL CONTROLS AND MIXING The DRIVE control adjusts the signal level at the Bass MuRF’s circuit input. With this control you can set the right input level for virtually any instrument or line-level signal source. Turn this control counterclockwise for strong input signals, and clockwise for weaker sound sources. The DRIVE light tells ho ...
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Viper MF-105B - page 15
Note that the odd-numbered lters are sent to the left channel, and the even-numbered lters are sent to the right channel. This allows for spreading a sound’s frequencies between two speakers, which adds a “spacious” feel. EXPRESSION PEDALS AND VOLTAGE CONTROL You now know what each of the rotary controls does to the sound of the MF-105B ...
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Viper MF-105B - page 16
MF-105B with external control signal sources in the Technical Information section on Pages 17 and 18. SOME TYPICAL SETUPS UPWARD STAIRCASE WITH RHYTHMIC VARIATION Here is a variation on the basic setting of gure 2 that shows off the abil- ity of the Bass MuRF to create rhythmic variations within the patterns. This is really nice with sus- tained ...
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Viper MF-105B - page 17
TECHNICAL INFORMATION NOTE: The following information is intended for use by people who understand analog electronic circuitry and have enough practical experience to interconnect sophisticated electronic equipment correctly. X-FACTOR This setup shows off how long envelope times, in relation to the pattern’s rate, creates a morphing timbre. Try i ...
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Viper MF-105B - page 18
The pedal cable should be shielded, with the shield connected to the sleeve terminal. See Figure 14. When connecting one or more pedal control input jacks to a source of external control voltage such as an analog synth or a MIDI-to-CV converter, you should use patch cords with tip-ring- sleeve phone plugs. The ring terminal on the plug should not b ...
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Viper MF-105B - page 19
AUDIO PATH: The bypassed signal goes to the LEFT/ MONO output jack. Thus, when the Bass MuRF is bypassed, the signal at the LEFT/MONO output jack is the same as what your instrument is producing, and there is no signal at the right output jack. The MF-105B will not pass an audio signal unless power is applied to it. LIMITED WARRANTY Moog Music warr ...
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Viper MF-105B - page 20
MF-105B SPECIFICATIONS DESCRIPTION: Analog effects module incorporating two functions: 7 – band Resonant Filters and 1 - band Shelving (Lowpass) Filter and a 24- Pattern Sequencer triggering Volume Envelopes for 8 Filters. FRONT PANEL FEATURES: DRIVE rotary control - adjusts the gain of the audio input to the effect. OUTPUT rotary control - balan ...
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Viper MF-105B - page 21
level; +8 dBm absolute maximum output level. Output impedance is 1,000 ohms. RATE, ENV, LFO/SWEEP, MIX, all of which are stereo ” jacks that accept Moogerfooger EP1 (or equivalent) expression pedals, or control voltages from two-circuit or three-circuit ” jacks. TAP/STEP IN ” phone jack – provides a means of syncing the tempo of th ...
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Viper MF-105B - page 22
APPENDIX A: THE Bass MuRF’s PATTERNS BANK A 1) No Animation 2) Upward Staircase 3) Repeater 4) X-Factor 5)Perpetual Motion ...
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Viper MF-105B - page 23
10) Double Dip 9)Double X 8) Prime Number Rhythmicon 7) Rhythmicon 6) Arpeggiated Filters ...
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Viper MF-105B - page 24
3) Down and Up 12) Slowbeat BANK B - with LFO 1) No Animation 2) Downward Staircase 11) Squiggly ...
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Viper MF-105B - page 25
7) Arpeggiated Perpetual Motion 6) Asymmetry 5) Pyramid 4) Upward Cascade ...
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Viper MF-105B - page 26
12) Big Beat 11) Breakbeat 10) Multi-groove 9)Folded Rhythmicon 8) Asymmetry 2 ...
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Viper MF-105B - page 27
APPENDIX B: Moog MuRF Pattern Step Adaptor (Sold separately) What it is: The MuRF Pattern Step Adaptor is a female to male 1/4” adaptor that attaches to your Moog (FS-1) footswitch cable and plugs into the tap/step input allowing the user to manually “step” through the patterns generated by the sequencer. Her e’ s how it works: 1. Attach th ...
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Viper MF-105B - page 28
Notes: ...
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Viper MF-105B - page 29
©2005 Moog Music Inc. MOOG MUSIC Inc. 2004-E RIVERSIDE DRIVE ASHEVILLE, NC 28804 Phone: (828) 251 0090 FAX: (828) 254 6233 Email: info@moogmusic.com WEB SITE: www.moogmusic.com Notes: ...
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