Page 31 - Triwatt Custom Lead Amp Builder's Guide

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47uf 47uf
50V 50V

ZENER >|
DIODE
>| 2K4 5W

15K 47K >|

>|
50-50 uF 500V
>|
620K 1W
180K 1W
220K 2W
KT66 6V6

HT1
Bias

Wire the bias switch to the Zener diode so that in one position, the two resistors are connected to
two terminals (center and outside) and the 18V 5W zener diode to the other two (center and
outside) of the DPDT toggle switch. This is the 6V6 Position.
.

3 Install Transformers

Install the power transformer. The Power transformer lies down along it’s ‘long axis’. Tightly twist
the AC mains leads (Black/Black) together. Braid the High voltage (Red - Red/Yellow - Red) and
the heater leads (Green – Green/Yellow - Green).

Align the AC mains leads so they face towards the outside of the chassis. The High voltage (Red -
Red/Yellow - Red) and heater leads (Green – Green/Yellow - Green) face inwards. Feed the
leads through the 3 grommets installed in the chassis with the High voltage and heater leads going
through separate grommets. Bolt the transformer in place with the supplied 8-32 bolts & Keps
nuts.

Install the Output transformer. The Output transformer lies down along it’s ‘short axis’. Braid the
High voltage leads together (Brown – Red – Blue) and also braid the secondary winding leads
(Yellow (4 ohm), Green (8), Orange (16) Black (Common).

TrinityAmps TRIWATT Builders Guide Ver. 2.31.docx- 31 -