Audio Authority Kit 41 Installing And Using

Installing and Using Kit 41 and Kit 42

The Model KIT41 supplies 20 AM/FM antenna outputs for car radios in retail demonstration systems when used
with a Model 975A AM/FM amplifier. Model KIT42 expands a KIT41 system by 20 radios, up to a total of 80
radios.

Installation

A complete AM/FM signal distribution system is shown in Figure 1. Connect a Model 975A to a suitable antenna
as directed in its instructions and feed its output to the 4-way splitter included in Kit 41. Use one of the splitter
outputs as the source for a string of 4-way tapoffs as shown in Figure 1, starting with a 16dB tapoff and ending
with the 8dB tapoff as shown.
FROM FROM RF CD
ANTENNA CHANGERS
12V DC POWER
975A
(OR ACCESS
SYSTEM BUS)
4-WAY SPLITTER
Place each tapoff where it will be within reach of four radios through the supplied F-to-Motorola cables.
It is suggested that you use all 5 tapoffs in a string, even if you don't need all 20 outputs. If, however, you must
shorten the string, delete tapoffs starting at the 8dB end, and terminate the open output port of the last remaining
tapoff as shown in Figure 2.
FROM FROM RF CD
ANTENNA CHANGERS
12V DC POWER
975A
(OR ACCESS
SYSTEM BUS)
4-WAY SPLITTER
Figure 1. Illustration of a complete distribution system. (Each OUT jack on the 4-way splitter may
be used to create another string.)
IN OUT IN
FIRST 4-WAY TAP
16 dB 16 dB
Figure 2. Illustration of a smaller distribution system.
F-TO-MOTOROLA (TO RADIOS)
IN OUT IN
FIRST 4-WAY TAP
16 dB
F-TO-MOTOROLA (TO RADIOS)
OUT IN OUT
12 dB
OUT IN
LAST 4-WAY TAP
16 dB 12 dB
IN OUT IN
LAST 4-WAY TAP
12 dB 8 dB
TERMINATION PLUG
OUT