WhitakerAudio 60 W Stereo Power Amplifier, User And Assembly Manual

Page: 63 / 154

63
60 W Stereo Power Amplifier
5.4.9 Connect Transformer Leads
Find the female “quick-disconnect” connectors. There are two types—one for heavy-gauge wire
(e.g., #16) and the other for light gauge wire (e.g., #22). The blue connectors are for the heavy-
gauge wire and the red connectors are for the light gauge wire. In the following steps, the
transformer leads will be connected to their respective terminals on the PWBs. Unless stated
otherwise, use the red female connectors.
The lead lengths from the various transformers may need to be trimmed to remove excess
length. Make sure to keep sufficient lead length to permit organized cable routing.
When attaching the connectors to the posts on the PWBs, support the board from underneath
so as to avoid stressing the board. This is particularly important for the power supply PWB.
5.4.9.1 Right Channel Output Transformer Primary Leads
In the following steps, trim the transformer lead lengths so the wires will comfortably reach their
respective terminals. Note that the sleeving containing the primary leads from T1 will rest against
the bottom chassis plate. Use the red terminal connectors. After each terminal is attached to a
lead, gently pull on the wire and terminal to make sure a good crimp has been made.
– Connect PL1 – output transformer plate 1 connection. Find the blue wire from the right
channel output transformer (T1). Install a connector to the end of the wire. Attach to the
PL1 post on the right channel PWB.
– Connect SC1 – output transformer screen 1 connection. Find the blue/yellow wire from
the right channel output transformer. Install a connector to the end of the wire. Attach to
the SC1 post on the right channel PWB.
– Connect PL2 – output transformer plate 2 connection. Find the brown wire from the right
channel output transformer. Install a connector to the end of the wire. Attach to the PL2
post on the right channel PWB.
– Connect SC2 – output transformer screen 2 connection. Find the brown/yellow wire from
the right channel output transformer. Install a connector to the end of the wire. Attach to
the SC2 post on the right channel PWB.