> tech specs
MuRF stands for Multiple Resonance Filter Array. The Heart of the MuRF is a bank of eight resonant bandpass filters tuned to fixed frequencies. The Animation module is a 24-Pattern sequencer triggering volume envelopes for the eight filters. Front Panel Features: DRIVE Rotary Control: Adjusts the gain of the audio input circuit. OUTPUT Rotary Control: Adjusts the output level when the effect is active. Used for balancing the filtered signal with the bypassed signal. MIX Rotary Control: Sets the proportion of direct to effected signal that appears at the output. ANIMATION: PATTERN Rotary Switch: Selects one of 12 Animation Patterns in each bank. BANK Slide Switch: Selects which bank of Patterns is active. RATE Rotary Control: Sets the Rate of the Pattern. ENVELOPE Rotary Control: Sets the envelope shape of the patterns. FILTERS Slider Controls: Controls the gains of the following frequency bands: 200 Hz, 300 Hz, 450 Hz, 675 Hz, 1KHz, 1.5 KHz, 2.2 KHz, 3.4KHz. DRIVE LED: 3-color LED indicates the level of the Input signal. Green indicates a low-level signal, yellow indicates optimal signal level, and red indicates soft clipping. BYPASS LED: 2-color LED indicates effect status. Red indicates bypass, and Green indicates the effect is active. RATE LED: Indicates the Rate of the Animation Pattern. Jack Panel Features: AUDIO IN: ¼" Phone jack – accepts any instrument-level or line-level signal from –16 dBm to +4 dBm. Input impedance is 1 megohm. LEFT/MONO OUT: ¼" Phone Jack carries the summed signal (left+right, all freq. bands) when Right Output is not connected, and carries the Left output signal (Freq. bands: 200 Hz, 450 Hz, 1 KHz, 2.2 KHz) when the right output is connected. Nominal output is –16 dBm to +4 dBm depending on setting of Output Level control when effect is active. Output impedance is 5,000 Ohms. RIGHT OUT: ¼" Phone Jack carries the Right Output signal (Freq. Bands 300 Hz, 675 Hz, 1.5 KHz, 3.4 KHz). Nominal output is –16 dBm to +4 dBM depending on setting of Output Level control when effect is active. Output impedance is 5,000 Ohms. RATE, MIX, ENVELOPE, LFO/SWEEP are ¼" TRS jacks that accept moogerfooger EP-1 (or equivalent) expression pedals, or control voltages from two or three-circuit ¼" jacks. TAP/STEP IN: This tap tempo input accepts a normally open momentary footswitch for syncing the rate of ANIMATION to the tempo of the music.