Behringer 904B VOLTAGE CONTROLLED HIGH PASS FILTER Quick Start Guide - Page 1

Quick Start Guide 904B VOLTAGE CONTROLLED Power Connection HIGH PASS FILTER Legendary Analog High Pass VCF Module for Eurorack Controls The module comes with the required power cable for connecting to a standard Eurorack power supply system. Follow these steps to connect power to the m odule. It is easier to make (1) these connections before the module has been mounted into a rack case. 1. Turn the power supply or rack case power off and disconnect the power cable. (2) 2. Insert the 16-pin connector on the power cable into the socket on the power supply or rack case. The connector has a tab that will align with the gap in the socket, so it cannot be inserted incorrectly. If the power supply does not have a keyed socket, be sure to orient pin 1 (-12 V) with the red stripe on the cable. 3. Insert the 10-pin connector into the socket on the back of the module. The connector has a tab that will align with the (3) (4) socket for correct orientation. 4. After both ends of the power cable have been securely attached, you may mount the module in a case and turn on (5) the power supply. (1) FIXED CONTROL VOLTAGE - Also referred to as "cutoff Installation frequency", this knob manually determines the frequency below which frequencies are attenuated. The resulting The necessary screws are included with the module for mounting frequency will depend on this knob's setting as well as in a Eurorack case. Connect the power cable before mounting. voltage received from the control inputs. Depending on the rack case, there may be a series of fixed holes (2) FREQUENCY RANGE - Select between Low (4 Hz to 20 spaced 2 HP apart along the length of the case, or a track that kHz) or High (10 Hz to 50 kHz) to set the frequency band in allows individual threaded plates to slide along the length which the fixed control voltage operates. of the case. The free-moving threaded plates allow precise (3) SIGNAL INPUT - Connect the incoming signal via 3.5 mm TS cable. positioning of the module, but each plate should be positioned in the approximate relation to the mounting holes in your module before attaching the screws. (4) SIGNAL OUTPUT - Send the processed signal to another module via 3.5 mm TS cable. Hold the module against the Eurorack rails so that each of the mounting holes are aligned with a threaded rail or threaded (5) CONTROL INPUTS - Connect control voltage signals from plate. Attach the screws part way to start, which will allow other modules to affect the cutoff frequency. The sum of small adjustments to the positioning while you get them all the voltage received doubles the frequency cutoff point aligned. After the final position has been established, tighten the for each 1 V increase. screws down.