4U029 - VCBW

4U029 - VCBW This filter, know as "VCBW", "Variable Band-Pass Filter" or simply "VCF2" is considered as the rarest filter from the original lineup. From the original catalogue: The VARIABLE BANDWIDTH VCF (VCF2) has a band-pass output which can be varied manually or with voltage control. This is a standard response synthesizer VCF, typical to filters used in many studio systems. In the VCF2, two state-variable VCF's are connected in series to produce a total of five outputs. High pass, low pass, two fixed bandwidth outputs, and one variable bandwidth output are available. The outputs are all flat-response (no resonance) so the VCF2 is suitable for processing concrete sounds without introducing resonant coloration to the timbres. Under voltage or manual control, cut-off frequency of the high and low-pass outputs are affected, as well as the center frequency of the two band-pass outputs. Both center frequency and bandwidth are independently controllable on the variable bandwidth output. The VCBW (or VCF2) needs 4 gain cells. Reverse engineered, SIP-10 size, pre-built chips are included with the set! PCB: 1.6 mm thick, double sided, green base material FR4-Standard TG 135-140 surface finish HASL part values are silkscreened all panel mount! Front panel 1.6 mm, PCB material with colour front print that "mimics aluminium" 2" x 175 mm mounting holes - 3.5 mm, follows the LW specification (top and bottom) please note, minor imperfection may occur no parts, just the PCB and panel Documentation