User manual ELECTRIX BI-FILTER

[. . . ] 32-33 47th Avenue Long Island City, New York 11101 ph: 718 937 8300 fx: 718 937 9111 www. ehx. com User Reference Manual Manual Notice: This manual is provided as both a guide for instruction, as well as a reference to be kept near by to aid you in everyday use. In it you will find general information, regarding the Bi-Filter as well as instructions for real and suggested operating procedures, setup and use. This manual is subject to change without notice. Electro-Harmonix is not liable for errors, direct, indirect, coincidental, or as a consequence of material contained within this manual. Thank you for purchasing the ElectroHarmonix Bi-Filter. [. . . ] When in the SLOW (UP) position, the envelope will rise slowly compared to the attack of your instrument. The range of the attack time is approximately 5 milliseconds to 1. 5 seconds. DECAY Slider: Controls the time response of the falling or "decay" portion of the signal envelope. When the slider is in the FAST (DOWN) position, the envelope will fall with nearly the same decay as your instrument. When in the SLOW (UP) position, the envelope will fall slowly compared to the decay of your instrument. The range of the decay time is approximately 10 milliseconds to 1. 5 seconds. Envelope Amount ENV AMOUNT Slider: Controls the amount and direction that the filter is swept by the envelope follower. In the 0 (CENTER) position, the envelope follower does not affect the filter. In the UP direction, the envelope sweeps the filter's frequency up from the frequency set by the FILTER FREQ slider. In the DOWN direction, the envelope sweeps the filter's frequency down from the frequency set by the FILTER FREQ slider. The amount of sweep is continuously variable depending on the control settings. NOTE: sweeping one of the filters UP and the other filter DOWN results in an "out of phase" complementary drive. Oscillator Amount OSC AMOUNT Slider: Controls the amount and direction of filter sweep by the SWEEP OSC (LFO). In the 0 (center) position, the LFO does not affect the filter. For both the UP and DOWN directions of the slider, the LFO sweeps the filter's frequency around the frequency set by the FILTER FREQ slider. In other words, the FILTER FREQ slider will set the center frequency and the LFO will sweep the filter above and below that center. So to sweep the entire frequency range, set the FILTER FREQ slider to MED (the center position) and set the OSC AMOUNT slider to either the maximum UP or DOWN positions. The difference between the UP and DOWN positions is that in the UP position the LFO is non-inverted, in the DOWN position the LFO waveform is inverted. If there is a rising sawtooth set up in the sweep oscillator section, and the OSC AMOUNT slider is set to the DOWN position, the waveform will become a falling sawtooth. NOTE: Setting the OSC AMOUNT of one filter UP and the other filter's OSC AMOUNT DOWN, results in an "out of phase" complementary drive. 7 Filters One and Two (Continued) Filter, Frequency and Range Controls FILTER FREQ Slider: Sets the filter frequency within its operating range. When no envelope or LFO signals are present, the frequency of the filter is set by the position of this slider. To perform a manual filter sweep, simply push this slider up or down. RANGE Switch: Changes the sweep range of the filter: LOW position gives the filter a sweep range from 150 Hz to 5 kHz. HI position gives the filter a sweep range from 350 Hz to 12 kHz . [. . . ] ENVELOPE 2 CV OUTPUT: This jack Outputs a Control Voltage of Envelope Follower 2 which modifies Filter 2. The range of this output is 0 - 14 Volts DC. FILTER 1 CV INPUT: Accepts a DC Control Voltage that controls the sweep of Filter 1 through its entire range. This control voltage is ADDED to the control signals from the Envelope Follower, LFO and Filter Frequency slider on the front panel. [. . . ]