Crown Audio Flat Panel Television TP 170V User Manual

CONSTANT-VOLTAGE TRANSFORMER PANEL  
TP-170V  
®
he Crown TP-170V is a rack-mountable  
panel with autoformers to provide imped-  
T
ance matching between amplifier outputs  
and “constant voltage” loudspeakers. This unit  
allows amplifiers without direct 70V or 100V  
output capability to drive distributed speaker  
systems designed to operate at those voltages.  
The TP-170V is constructed of sturdy steel, and  
hinged on one side to allow easy access to the  
inside connections.  
For more details about the Crown TP-170V,  
contact Crown Customer Service at  
800-342-6939 or 574-294-8200. Also, visit the  
Specifications  
Output connectors: One five-pole terminal strip  
per channel with touch-proof cover. Accepts up  
to 10 AWG terminal forks.  
Frequency Response: +/- 0.5 dB (20 Hz to 20  
kHz).  
Features  
Insertion (Core) Loss: 0.41 dB max (70VAC at  
• Four autoformers per panel provide four channels of impedance matching for Constant-Voltage opera-  
tion  
50 Hz).  
Dimensions:  
• Provides 100V output in Dual mode when used with CTs 600, CTs 1200, CTs 4200 and CTs 8200 ampli-  
fiers  
19 in (48.3 cm) wide (including hinge)  
7.23 in (18.4 cm) high  
1.45 in (3.7 cm) deep.  
• Allows amplifiers without direct Constant-Voltage capability to be easily integrated into distributed  
systems  
Weight: 12.75 lbs (5.78 kg).  
• Convenient hinged rack mounting allows easy access to connections  
Choose Output Wire and Connectors  
Wire Your System  
Installing the TP-170V  
Crown recommends using professionally con-  
structed, high quality, two- or four-conductor,  
heavy gauge speaker wire and connectors. You  
may use terminal forks or bare wire for your  
output connectors. The TP-170V terminal strips  
accept up to 10 AWG terminal forks which fit  
over a #8 screw.  
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.  
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).  
Use a standard 19-inch (48.3-cm) equipment  
rack (EIA RS-310B) to install the TP-170V.  
CAUTION: Never use shielded cable for output  
wiring.  
CAUTION: Use insulated terminal forks to pre-  
vent shorting against the touch-proof cover  
plate.  
Connect the Grounding Strap  
Connect the TP-170V grounding strap to a rack  
rail or rack ground, and be sure the rack is  
grounded to an AC mains safety ground. (Test  
the AC mains ground to make sure it is reli-  
able). If you are not using a rack, be sure to  
connect the TP-170V grounding strap to an AC  
mains safety ground and mount the unit in a  
metal box for safety. Insulate the TP-170V from  
the box.  
To connect TP-170V outputs, first remove the  
touch-proof cover plate covering the output  
terminal strip by removing the three screws  
which hold it in place. To prevent the possibility  
of short-circuits, wrap or otherwise insulate  
exposed loudspeaker cable and connectors.  
Reinstall the cover plate.  
CAUTION: Do not remove the grounding strap  
or leave it unconnected.  
 

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