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4. CONNECTIONS
WARNING: To prevent the risk
of electric shock, do not connect
the loudspeaker with the amplifier
switched on. Never touch the bare
wires coming from the output
terminals of the amplifier when it is
switched on. When the connections
have been made, add the protective
insulated cover over the screw
terminals of each transformer
panel in your system, and over the
amplifier output terminals.
• The connectors on the transformer
plate are screw terminals.
• Strip the loudspeaker wiring back
about 1/2", loosen the screw enough
to loop the wire around the shaft of
the screw (clockwise), and tighten
down the screw with a screwdriver.
• In a constant-voltage distribution
system, all the loudspeakers are
connected in parallel. This makes it
easy to add or remove loudspeakers
from the system without having to
recalculate the impedance of the
load on the amplifier.
• Add up the power ratings of the taps
you are using, and make sure the
total power adds up to no more than
90% of the rated output power of
the amplifier being used.
AC-TX64
• The AC-TX64
can be used with
the VR61, VR62
and the CLA37
Loudspeakers.
4
– AC-TX64 and AC-TX128
SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED
TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS
AC-TX128
SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED
TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS
100 VOLT TAPS
COM 32W 64W NA
COM 16W 32W 64W
70 VOLT TAPS
AC-TX64
CAUTION:
SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED
TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS
100 VOLT TAPS
COM 32W 64W NA
COM 16W 32W 64W
70 VOLT TAPS
either the 16 W, 32 W, or 64 W
AC-TX64
terminal to the positive "+" side of
the 70 V system, and connect the
COM terminal to the negative "–"
CAUTION:
side of the 70 V system.
• When using with a 100 V distribution
system, read the top row of
markings. Connect either the 32 W
or 64 W terminal to the "+" side of
the 100 V system, and connect the
COM terminal to the "–" side of the
100 V system.
DO NOT use the terminal labeled
"NA" in a 100 V system.
• The AC-TX128 can
be used with the
VR21 and VR51
Loudspeakers.
100 VOLT TAPS
COM 64W 128W NA
COM 32W 64W 128W
70 VOLT TAPS
either the 32 W, 64 W, or 128 W
AC-TX128
terminal to the positive "+" side of
the 70 V system, and connect the
COM terminal to the negative "–"
CAUTION:
side of the 70 V system.
• When using with a 100 V distribution
system, read the top row of
markings. Connect either the 64 W
or 128 W terminal to the "+" side of
the 100 V system, and connect the
COM terminal to the "–" side of the
100 V system.
DO NOT use the terminal labeled
"NA" in a 100 V system.
When using with
a 70 V distribution
system, read the
bottom row of
markings. Connect
100 VOLT TAPS
COM 64W 128W NA
COM 32W 64W 128W
70 VOLT TAPS
AC-TX128
CAUTION:
SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED
TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS
When using with
a 70 V distribution
system, read the
bottom row of
markings. Connect
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