121
20 W Stereo Audio Amplifier
– Attach a quick-disconnect terminal to the free end of the 5-inch #18 black wire. Attach to
the
GND
post on the left channel speaker PWB.
– Prepare a 10-inch long #22 yellow wire. Attach a quick-disconnect terminal to one end of
the wire.
– Find the #22 yellow wire from the front panel Speaker On/Off switch. Combine the wire
with the #22 yellow wire in the previous step and attach a quick-disconnect terminal (two
wires crimped together). Connect to the
RYL
post on the right channel speaker PWB.
Connect the other terminal to the
RYL
post on the left channel speaker PWB.
5.6.11.4 Headphone Jacks
On the headphone jacks, there are three terminals—commonly known as
tip
,
ring
, and
sleeve
.
Identify each of the terminals. This can be done by a visual inspection of the socket, or with an
ohmmeter. Note that:
•
The sleeve is the common (ground) connection.
•
The ring is the right channel connection.
•
The tip is the left channel connection.
– Prepare a 19-inch long 2-conductor shielded cable. Remove 4-inches of insulation from
one end, and 2-inches of insulation from the other end. Attach a quick-disconnect terminal
to each of the wires (black, white, and shield drain) on the 4-inch side. Attach the
connectors as follows:
•
White to the
HEAD1
terminal on the right channel speaker PWB.
•
Black to the
HEAD1
terminal on the left channel speaker PWB.
•
Shield to the
GND
terminal on the left channel speaker PWB.
– Route the 2-conductor shielded cable to the front panel and the1/4-inch headphone jack
(J1). Make the following connections:
•
White to the
ring
terminal on J1. Solder.
•
Black to the
tip
terminal on J1. Solder.
•
Shield to the
sleeve
terminal on J1. Solder.
Содержание J C Whitaker 20 W Stereo Audio Amplifier
Страница 1: ...20 W Stereo Amplifier WhitakerAudio 20 W Stereo Audio Amplifier...
Страница 10: ...10 WhitakerAudio Figure 1 1 b...
Страница 14: ...14 WhitakerAudio Figure 1 2 The preamplifier power supply PWB...
Страница 17: ...17 20 W Stereo Audio Amplifier Figure 1 3 Power management circuit for the 20 W Stereo Amplifier...
Страница 20: ...20 WhitakerAudio Figure 1 4 Power management expansion circuit for the 40 W Stereo Amplifier...
Страница 37: ...37 20 W Stereo Audio Amplifier Figure 3 1 Component layout for the Amplifier PWB 1 right board...
Страница 39: ...39 20 W Stereo Audio Amplifier Figure 3 2 Rectifier PWB component layout...
Страница 42: ...42 WhitakerAudio Figure 3 3 Component layout for the Amplifier PWB 2 left board...
Страница 44: ...44 WhitakerAudio Figure 3 4 Layout of the speaker terminal PWB a right channel board b left channel board a b...
Страница 46: ...46 WhitakerAudio Figure 3 5 Layout of the preamplifier power supply PWB...
Страница 51: ...51 20 W Stereo Audio Amplifier Figure 3 7 Component layout of the power management expansion PWB...
Страница 86: ...86 WhitakerAudio Figure 5 7 Power management expansion PWB a component side b foil side a b...
Страница 135: ...135 20 W Stereo Audio Amplifier Figure 5 15 Chassis view of the 20 W Stereo amplifier...
Страница 179: ......
Страница 180: ...20 W Stereo Amplifier WhitakerAudio 20 W Stereo Audio Amplifier...
Страница 184: ...184 WhitakerAudio Figure 1 1 Completed cable assembly...