WhitakerAudio 60 W Stereo Power Amplifier, User And Assembly Manual

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60 W Stereo Audio Amplifier
Addendum
The 60 W Stereo Amplifier User and Assembly Manual is written with the assumption that the
user has purchased the product from WhitakerAudio as a ready-to-assemble package. For builders
that have acquired the components on their own and are using the manual as an assembly guide, it
is recommended that the parts be divided into the packaging referred to in the manual.
In the process of acquiring parts for this amplifier, a number of vendors will be used. As such,
parts will arrive lumped together and will also arrive at various points in time. The process used
by WhitakerAudio involves organizing the components into three major groups:
• Right channel printed wiring board (PWB) components
• Left channel PWB components
• Power supply PWB components
• Chassis components
Parts are organized by component number and device type. For example, all 1 k
Ω
1/2-watt
resistors for the right channel PWB are packaged together. Each group of parts is placed in a
resealable (clasp-type) envelope with a self-adhesive label applied. Labels such as Avery #5260
are useful for this purpose. Recommended envelopes include the following:
• 2.25-inch by 3.5-inch envelope (Staples no. 1 coin envelope)
• 3-3/8-inch by 6-inch envelope (Staples no. 6 coin envelope)
• 6-inch by 9-inch clasp envelope (Staples)
While this sorting requires some up-front organizational time, it serves as a check that all parts
are accounted for and speeds assembly of the PWBs and chassis.
The following tables list the labels used for the three component groups.
Table 1 Right Channel Component Package Labels
60 W Stereo Amplifier
Right Channel
WhitakerAudio
R5
10 Ω, 0.5 W,
right channel
V1
6U8A tube,
right channel
C1
25 μF, 50 V, electrolytic,
right channel
R6
182 kΩ, 0.5 W,
right channel
V2, V3:
7027A tube,
right channel
C2
22 pF, 600 V, ceramic
right channel
R7, R8
15 kΩ, 2 W,
right channel
Printed Wiring Board,
right channel