Crown T-170V User manual

T-170V
The Crown®T-170V is an autoformer that
provides impedance matching between an
amplifier output and “constant voltage”
loudspeakers. It allows amplifiers without direct
70V or 100V output capability to drive distrib-
uted speaker systems designed to operate at
those voltages.
For more details about the Crown T-170V, con-
tact Crown Customer Service at 800-342-6939
or 574-294-8200. Also, visit the Crown Audio
website at www.crownaudio.com.
Specifications
Wires:
Black: To amplifier negative (–) output and
speaker negative (–) terminal.
Yellow: To amplifier 40V positive (+) output.
Violet: To 70V speaker positive (+) terminal or
to amplifier 70V positive (+) output for 100V
speaker applications.
Blue: To amplifier 50V positive (+) output.
White: To 100V speaker positive (+) terminal.
Frequency Response: +/- 0.5 dB (20 Hz to 20
kHz).
Insertion (Core) Loss: 0.41 dB max (70VAC @
50 Hz).
Dimensions:
4.10 in (10.4 cm) diameter
1.30 in (3.3 cm) deep.
Weight: 2.2 lbs (1 kg).
Accessories: 5 wire nuts included.
Installing the T-170V
CAUTION: Before you begin, make sure your
amplifier is disconnected from the power
source, with the power switch in the “off”
position and all level controls turned com-
pletely down (counterclockwise).
Choose Output Wire and Connectors
Crown recommends using professionally con-
structed, high quality, two- or four-conductor,
heavy gauge speaker wire and connectors. You
may use #10 AWG terminal forks or bare wire
to connect to CTs amplifier output connectors.
Wire Your System
Refer to the chart in Figure 1 to determine the
proper transformer tap to use, based on the
rated output power of your amplifier and the
desired constant-voltage of your system. Then
wire the connections as shown in the corre-
sponding wiring diagram in Figs. 2 through 4.
CONSTANT-VOLTAGE TRANSFORMER
Figure 1. Voltage In / Voltage Out Chart
Features
• Autoformer provides impedance matching for Constant-Voltage operation
• Provides 100V output in Dual mode when used with CTs 600, CTs 1200, CTs 4200 and CTs 8200 ampli-
fiers
• Allows amplifiers without direct Constant-Voltage capability to be easily integrated into distributed
systems
CAUTION: Never use shielded cable for output
wiring.
The T-170V autoformer should be mounted
and enclosed in a rack or metal box for safety.
Put insulation between the autoformer and
the box.
Class 1 Output Wiring required.

Crown International
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: [phone]
FAX: [phone]FAX
www.crownaudio.com
7/05 135086-2B
Crown’s Three-Year, No-Fault, Fully Transferable Warranty
Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown amplifier
product—an unsurpassed industry standard. With this unprecedented No-Fault protection, your
new Crown amplifier product is warranted to meet or exceed original specifications for the first
three years of ownership. During this time, if your unit fails, or does not perform to original speci-
fications, it will be repaired or replaced at our expense. About the only things not covered by this
warranty are those losses normally covered by insurance and those caused by intentional abuse.
And the coverage is transferable, should you sell your unit.
See your authorized Crown dealer for full warranty disclosure and details. For customers outside
of the USA, please contact your authorized Crown distributor for warranty information or call
574-294-8200.
T-170V
Specifications subject to change without prior notice. Latest
information available at www.crownaudio.com.
Crown and Crown Audio are registered trademarks of Crown
International. Other trademarks are the property of their
respective owners. Printed in U.S.A.
© 2005 Crown Audio®, Inc
Figure 2. 40V Input, 70V Output
Figure 4. 70V Input, 100V Output
Figure 3. 50V Input, 70V Output
50V Input, 70V Output (Figure 3)
1. Connect transformer black wire to amplifier
negative (–) output and speaker negative (–)
terminal.
2. Connect transformer blue wire to amplifier
positive (+) output.
3. Connect transformer violet wire to positive
(+) speaker terminal.
70V Input, 100V Output (Figure 4)
1. Connect transformer black wire to amplifier
negative (–) output and speaker negative (–)
terminal.
2. Connect transformer violet wire to amplifier
positive (+) output.
3. Connect transformer white wire to positive
(+) speaker terminal.
IMPORTANT! CUT UNUSED WIRES AND
ADD THE SUPPLIED WIRE NUTS TO EACH
WIRE. ALL TERMINATIONS SHOULD BE
INSULATED.
40V Input, 70V Output (Figure 2)
1. Connect transformer black wire to amplifier
negative (–) output and speaker negative (–)
terminal.
2. Connect transformer yellow wire to amplifier
positive (+) output.
3. Connect transformer violet wire to positive
(+) speaker terminal.