Underhill ET5 User Manual

User Manual
ET5 Three Band Equalizer
Overview
The ET5 is a three band parametric equalizer that plugs into Underhill preamps. It uses three
stacked potentiometers to control bass, mid, and treble bands. The upper knob on each pot is a
boost/cut control with a center detent for flat response. The lower knob is a frequency sweep
for the respective band. The bass and treble bands are a shelving type filter, and the mid band is
a peaking filter.
Installation
Connect the equalizer to the filter slot on the PD or PS preamp with a five wire filter cable.
Mount the three control pots on the bass with cables attached, and then plug the cables into the
bass, mid and treble connectors on the ET5. 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 ET5 is typically installed in the M filter position, which applies it to the
post-blend signal. On the PS preamp, the ET5 can be used in either A or M position.
Setup and Adjustment
There are no adjustments on the ET5. 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.
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