Page 62 - Triwatt Custom Lead Amp Builder's Guide

Installing a Passive Effects Loop

Note: This is for experienced builders.

To add a passive effects loop, all it needed was an interrupt between the Master Volume wiper and
the 22k resistor that goes into V3 pin 7. It does not need a 1M to ground at the return to balance
any potential impedance mismatch. Also it does not need a coupling cap. Very simple mod and the
amp still sounds great.

Wire the switched send & return jacks so that when there is nothing plugged in them, the loop is
bypassed.

To accommodate the send & return jacks in the chassis drill two new holes between the Output
Jack and OD Footswitch jack. This works well, and places the send and return jacks in exactly the
right place to have the shortest cable runs possible.

TrinityAmps TRIWATT Builders Guide Ver. 2.31.docx
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