Underhill ED5 User Manual

User Manual
ED5 Dual Equalizer
Overview
The ED5 is a dual band parametric equalizer module with low and high frequency filters that
together cover the entire range of the bass guitar. Both filters are peaking type controls, which
boost or cut frequencies near the set-point and leave other frequencies unaffected. Two stacked
potentiometers control the low and high bands, with the bottom knob setting the frequency and
the top knob setting the boost or cut level. The top knob has a center detent for flat (no boost or
cut) response.
Installation
Connect the filter to the desired filter slot on the PD or PS preamp with a five wire filter cable.
Connect the three wire pot/switch cables between the labelled FREQ and Q connectors on the
CD4 control pot and the ED5. Make sure to read the manual for your PD or PS preamp to set the
switch configurations for the filter slots, depending on whether you are using an EQ bypass
switch.
On the PD preamp, the ED5 is typically installed in the M filter position, which applies it to the
post-blend signal. On the PS preamp, the ED5 can be used in either A or M position.
Setup and Adjustment
There are no adjustments on the ED5. Test your equalizer after installation to make sure both
the frequency and boost controls are working. A loud "motorboating" noise means the cables
are probably reversed.
Underhill Bass Guitars 1 r5.1.0 8/4/23