Stewart Sound Chassis
for FT, F-3, F-7 and F-9's

All Lok Sound decoders combine a high quality digital decoder and a digital sound module on one circuit board. You can operate your locomotives digitally and at the same time replay the original sound as well as special sound effects such as horn or whistle. The sound is adjusted to the particular running mode at any point in time: when the loco starts moving, you hear the appropriate sounds (diesel engine revving up, steam chuffs with increasing frequency) and when it stops, you hear the engine slow down and also braking sounds. Lok Sound decoders set the trend in terms of technology and sound quality.

Answers to a few questions:

All Units come preprogrammed.

To use LOK Sound with DC (Not DCC) you should purchase a Precision Craft DCMaster #1001 Analog Control Module.  This is an All-in-one push button sound activation (bell and horn), volume control and programming.

LOK Sound has DCC motor Control built on the circuit board

As with most sound equiped locos running with DC control, a unit with sound will start at a slightly high voltage than a unit without sound

Units below have real EMD F units sounds

Installation:
Remove old chassis from body and place body on new chassis.

Each unit is track tested and ready to install.

Installation
Into Athearn Genesis or Athearn RTR  F Units
Click Here

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F-3, F-7, F-9 Sound Chassis   Dummy     $149.95    Powered   $199.95

With Black Side frames & Lok Sound Installed
#691-1201   F-A Unit Dummy
#691-1202   F-B Unit Dummy   
#691-1203   F-A Unit Powered
#691-1204   F-B Unit Powered
With Silver Side frames & Lok Sound Installed
#691-1205   F-A Unit Dummy  
#691-1206   F-B Unit Dummy
#691-1207   F-A Unit Powered
#691-1208   F-B Unit Powered

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FT  Sound Chassis  Dummy     $149.95  Powered   $199.95

With Black Side frames & Lok Sound Installed
#691-1209 FT-A Unit Dummy  
#691-1210 FT-A Unit Powered 
With Black Side frames & Lok Sound Installed
#691-1213 FT-B Unit Dummy  
#691-1214 FT-B Unit Powered 
With Silver Side frames & Lok Sound Installed
#691-1211 FT-A or B Unit Dummy  
#691-1212 FT-A or B Unit Powered 
With Silver Side frames & Lok Sound Installed
#691-1215 FT-B or B Unit Dummy  
#691-1216 FT-B or B Unit Powered 

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VO-1000  Sound Chassis 
#691-1217  Powered   $199.95

VO-660, S-8, S-12, DS 4-4-1000  Sound Chassis
#691-1218  Powered   $199.95

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U-25 b  Sound Chassis
#691-1219  Powered   $199.95

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Lok Decoder - if you are going to solder be very careful