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MTH SD70MAC Operating Instructions
TRANSFORMER COMPATIBILITY AND
WIRING CHART
Proto-Sound® is designed to work with any standard AC transformer that
uses a “Pure Sine-Wave" format. The chart below lists the many Lionel®
compatible transformers, such as the Lionel KW or ZW models. In
addition, the chart details how the terminals on these compatible
transformers should be attached to your layout. The Trainmaster system
from Lionel® will not function correctly with Proto-Sound® without
disrupting the sound effects. Therefore, whenever Proto-Sound® senses that
the Trainmaster system is being used, it automatically disables
Proto-Sound® sound effects. The operator retains control over the engine,
but no sound effects will play.
Transformer
Model
Center Rail Outside Rail
Min/Max.
Voltage
Power
Rating
Transformer
Type
Lionel 1032 U A 5-16v* 90-Watt Standard
Lionel 1032M U A 5-16v* 90-Watt Standard
Lionel 1033 U A 5-16v* 90-Watt Standard
Lionel 1043 U A 5-16v* 90-Watt Standard
Lionel 1043M U A 5-16v* 90-Watt Standard
Lionel 1044 U A 5-16v* 90-Watt Standard
Lionel 1053 U A 8-17v 60-Watt Standard
Lionel 1063 U A 8-17v 60-Watt Standard
All-Trol Left Terminal Right Terminal 0-24v 300-Watt Electronic
Cab-1/Powerma
ster
A U 0-18v 135V.A. Electronic
Dallee Hostler Left Terminal Right Terminal
Lionel LW A U 8-18v 75-Watt Standard
Lionel KW A or B U 6-20v 190-Watt Standard
MRC Tech II Left Terminal 2
nd
From Left 0-15v* 40V.A. Electronic
Lionel MW (not
recommended)
Outside Track
Terminal
Inside Track
Terminal
5-16v* 50V.A. Electronic
R.O.W. Red Terminal Black Terminal 0-24v 384-Watt Standard
Lionel RS-1 Red Terminal Black Terminal 0-18v 50V.A. Electronic
Lionel RW U A 9-19v 110-Watt Standard
Lionel SW U A Unknown 130-Watt Standard
Lionel TW U A 8-18v 175-Watt Standard
Lionel ZW A or D U 8-20v 275-Watt Standard
MTH Z4000 Red Black 5-22v 390-Watt Electronic
*Proto-Sound® needs over 14 volts of power to work properly. Overloading or using in-line
accessories with this transformer may lower the peak voltage below Proto-Sound® minimum
requirements.
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