Adcom GTP-740 User Manual
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Note that the GTP-740’s RCA-style jacks have color-coded centers to make
connections easier.
Use this key to help route cables properly:
YELLOW centers =
VIDEO signals (composite)
BLACK centers
=
DIGITAL AUDIO signals
and
CENTER CHANNEL and SUBWOOFER
PREAMP outputs
WHITE centers
=
LEFT CHANNEL ANALOG AUDIO signals
RED centers
=
RIGHT CHANNEL ANALOG AUDIO signals
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Antenna connections: You need to connect different antennas for FM and AM reception.
antenna
300a-t ground AM
For FM, use either the 75 ohm “F" connector or the 300 ohm “push terminals” depending on what
type of antenna you’ve chosen. If you’re getting FM from a cable system feed, you will most likely
use the “P connector. The “T" shaped antenna supplied with the GTP-740 uses the push
terminals marked “300 ohms." “T" antennas are directional. They should be placed as high as
possible with the arms fully extended. If possible, the arms should be oriented so that they are at
right angles to the transmitter.
signal direction
t
transmitter
t
best reception
signal direction
FM antenna
M.
poor reception
to GTP-740 FM
antenna connections
transmitter
The supplied AM loop antenna connects to the push terminals marked “ground” and “AM,”
respectively. You may need to adjust the position of the antenna for best reception. If you use an
outdoor AM antenna, follow the manufacturer’s instructions.
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