Bachmann Sound Value GP35 - HO

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Bachmann Sound Value GP35
Bachmann Sound Value GP35.jpg
Model Information
ManufacturerBachmann
Stock Number68811-68815
ScaleHO-Scale
Power TypeDCC Dual Mode w/Sound
Release Date2022
Retail Price$365.00
Decoder Information
Decoder TypeDSV-2
Version5
Lighting Functions2
Prototype Information
BuilderGeneral Motors Electro-Motive Division (EMD)
Build DateJuly 1963 – January 1966
Total Produced1,334
Motive PowerDiesel-Electric; EMD 567D3A
Cylinder CfgV16
AspirationTurbocharged
Power Output2,500 hp (1,864 kW)
More InfoEMD GP35

Overview

Bachmann’s new DCC Sound-Value-equipped GP35 locomotive includes a TCS WOWSound® decoder with on-board Keep-Alive® for uninterrupted operation, even over dirty track. The GP35 features a unique decoder design. This model was retrofitted from a physical design which was not sound-ready or sound-friendly. TCS engineers had to come up with an enginuitive solution. We are quite pleased with the outcome! The WOWSound® diesel-electric locomotive sound package includes sounds for horn, bell, prime mover, air compressor, cooling fan, coupler close/release, brakes, and many more! (See below)

Someone has to keep that freight moving, and the HO-scale Sound Value GP35 from Bachmann Trains is here to deliver!

Specific Features

Features include:

  • DCC sound-equipped for sound, speed, direction, and lighting control
  • Dual-mode NMRA-compliant decoder operates sound, motor, and lights on DCC or DC power.
  • TCS true CD-quality audio with 16-bit depth resolution at 44,100Hz
  • Authentic and prototypical sounds
  • 8 hand-picked prototypical horn options and 5 bell options
  • On-board Keep-Alive® device that keeps your engine running during power interruptions due to dirty track or loss of electrical contact
  • Directional headlights with "Rule 17" dimming operation enabled by default
  • Two user-configure-able lighting outputs
  • TCS' industry-leading "quiet drive" Back EMF motor control for superior slow-speed performance and load compensation
  • User-loadable speed table options (3-point, 28-point, and 126-point curves)
  • Three select-able Throttle Modes
  • Two configurable Momentum Modes
  • TCS' new and exclusive Function Pagination System
  • Die-cast frame

DC mode operation

When operating in DC mode, the locomotive will sit still and silent until a sufficient track voltage is present. Once the minimum voltage (approximately 8 volts) is met, the locomotive will begin the prime mover ignition sequence. An additional increase in voltage will cause the locomotive to begin to move. A directional horn blast will be heard and bell will activate automatically. Users may trigger a grade crossing horn quill sound by quickly adjusting the track voltage up and back down quickly. The directional horn blasts, quill, and automatic DC mode bell are enabled by default. If you would like to change these settings, as well as other behaviour of your locomotive on DC power, please read more in our section on DC Mode Operation and Configuration for WOWSound Version 5.

Note: This WOWSound® product does not support TCS' Audio Assist® auditory feedback program.


Button Mappings

The values outlined below in the button mapping, sound list, and CV values are the defaults assigned to this particular decoder from the factory.

For information on how to program your locomotive using the values provided in the charts below, please see our List of Standard CV's for WOWSound Version 5, and/or List of Indexed CV's for WOWSound Version 5.

TCS Function Pagination System

The Bachmann Sound Value GP35 - HO supports TCS' new "function pagination" system. This makes it easy to access all 28 functions and all lighting effects on throttles with limited function access by adding an offset to the pressed function button (offset of +10 for function page 2; offset of +20 for function page 3). For example, to access function 15:

  • Press function 8 twice to rotate through the function pages until the decoder announces "function page [two]"
  • Press button 5 on your throttle/controller
  • The decoder will activate function 5 + 10 (page 2 offset) = 15

Note: the decoder supports accessing all decoder functions above 9 regardless of the currently selected function page by pressing the corresponding buttons on your throttle.

If you have a command station which supports all 28 function buttons and would like to disable function pagination, this may be done by re-configuring CV 177

Button Mappings
Function Button Sound Action Light Action Dual Enabled Button
0 None Rule 17 - Both Directions - Lamp 0F
Special Function: Dim the Rule 17 Light
False Button 0
1 Bell Constant Bright - Both Directions - Lamp 1 False Button 1
2 Horn Long Constant Bright - Both Directions - Lamp 2 False Button 2
3 Horn Short Constant Bright - Both Directions - Lamp 3 False Button 3
4 Horn Quill Constant Bright - Both Directions - Lamp 4 False Button 4
5 Brake Squeal Constant Bright - Both Directions - Lamp 5 False Button 5
6 Prime Mover Ignition Constant Bright - Both Directions - Lamp 6 False Button 6
7 None Constant Bright - Both Directions - Lamp 7 False Button 7
8 1x Press Mute/Unmute
2x Press to rotate page
None True Button 8
9 None Constant Bright - Both Directions - Lamp 9 False Button 9
10 Manual Notch Up Constant Bright - Both Directions - Lamp 10 False Button 10
11 Manual Notch Down None False Button 11
12 Coupler Clank None False Button 12
13 Coupler Clank None False Button 13
14 Brake Release None False Button 14
15 Dynamic Brake None True Button 15
16 Momentum None True Button 16
17 Crew Alert None False Button 17
18 1x Press Mute/Unmute
2x Press to rotate page
None True Button 18
19 None None False Button 19
20 Air Spitter None False Button 20
21 Forward Sound None False Button 21
22 Reverse Sound None False Button 22
23 Stop Sound None False Button 23
24 Rotate Whistle None False Button 24
25 Windshield Wipers None False Button 25
26 Exhaust Fan None False Button 26
27 None None False Button 27
28 1x Press Mute/Unmute
2x Press to rotate page
None True Button 28
Random Sound Mapping
Random
Sound
Generator
Sound
Played
1 Air Compressor
2 Air Spitter
3 None
4 None


Sound list

Sound Type Sound Number High Byte Low Byte Sounds Available
Air Compressor 0 0 0 EMD Air Compressor Type 1
Air Spitter 1 0 1 Air Spit #1
2 0 2 Air Spit #2
Brake Release 8 0 8 Brake Release
Brake Squeal 9 0 9 Brake Squeal *
Coupler Clank 39 0 39 Coupler Clank Closed
40 0 40 Coupler Clank Open
Dynamic Brake 42 0 42 Dynamic Brakes
43 0 43 Dynamic Brakes Medium
44 0 44 Dynamic Brakes High
Exhaust Fan 45 0 45 Exhaust Fan
Forward Sound 46 0 46 Forward Sound *
Horn Quill 62 0 62 Horn Quill *
Horn Short 70 0 70 Horn Short *
Prime Mover Ignition 159 0 159 Prime Mover Ignition *
Reverse Sound 161 0 161 Reverse Sound *
Stop Sound 177 0 177 Stop Sound *
Windshield Wipers 185 0 185 Windshield Wiper

*For Prime Mover, Bell, and Horn custom reprogramming use the sound numbers below in the corresponding CV from the table header

Prime Mover

CV 123 Value Active Prime Mover
0 (default) EMD 567D2 16 Turbo

Bell

CV 122 Value Active Bell
0 (default) GP20 WP #2100 Bell
1 Conrail Num 2233 GP30 Air Powered Bell
2 VO 1000 Bell
3 Western Pacific 713 Bell
4 Western Pacific 918D F Unit Bell

Horn

CV 120 Value Active Horn
0 (default) Leslie 3 Chime
1 Leslie RS3
2 Leslie RS3L
3 Nathan K3
4 Nathan K3H
5 Nathan M3 C.P. 1
6 Nathan P3
7 Wabco E2 3 Chime Horn

CV Addendum (Standard CV's)

The Bachmann Sound Value GP35 - HO follows the motor and lighting CV's as described in in TCS' Complete Standard CV's List For WOWSound Version 5. Listed below are the CV's that have been modified for the Bachmann Sound Value GP35 - HO decoder.

CV Value Description
CV 3 5 Acceleration Rate
CV 4 5 Deceleration Rate
CV 49 40 F0F light feature
CV 50 40 F0R light feature
CV 61 33 Configuration CV #2
CV 115 0 Motor Delay Reset Time
CV 120 0 Horn Set Selector
CV 123 0 Prime Mover Selection
CV 126 7 Rule 17 Dimming Button Remapping
CV 142 225 Random Sound 2 Frequency
CV 177 48 User Options #2
CV 197 25 Volume - Bell
CV 204 20 Volume - Exhaust Fan
CV 213 55 Volume - Prime Mover
CV 214 55 Volume - Prime Mover Ignition
CV 219 30 Volume - Windshield Wipers
CV 238 129 Dual Enabled functions register 1 (F0-F7)
CV 241 0 Dual Enabled functions register 4 (F24-F28)
CV 247 71 None Supplied
CV 249 182 Decoder Hardware Model Identifier


CV Addendum (Indexed CV's)

The Bachmann Sound Value GP35 - HO follows the motor and lighting CV's as described in TCS' List of Indexed CV's for WOWSound Version 5. Listed below are the CV's that have been modified for the Bachmann Sound Value GP35 - HO decoder.

CV31 CV32 CV Value Description
16 4 260 3 Sound Mapping - F1
16 4 262 54 Sound Mapping - F2
16 4 264 70 Sound Mapping - F3
16 4 266 62 Sound Mapping - F4
16 4 268 9 Sound Mapping - F5
16 4 270 159 Sound Mapping - F6
16 4 272 65535 Sound Mapping - F7
16 4 274 82 Sound Mapping - F8
16 4 276 65535 Sound Mapping - F9
16 4 278 79 Sound Mapping - F10
16 4 280 78 Sound Mapping - F11
16 4 282 39 Sound Mapping - F12
16 4 284 40 Sound Mapping - F13
16 4 286 8 Sound Mapping - F14
16 4 288 42 Sound Mapping - F15
16 4 290 80 Sound Mapping - F16
16 4 292 41 Sound Mapping - F17
16 4 294 83 Sound Mapping - F18
16 4 298 1 Sound Mapping - F20
16 4 300 46 Sound Mapping - F21
16 4 302 161 Sound Mapping - F22
16 4 304 177 Sound Mapping - F23
16 4 306 169 Sound Mapping - F24
16 4 308 185 Sound Mapping - F25
16 4 310 45 Sound Mapping - F26
16 4 314 84 Sound Mapping - F28
16 4 316 0 Sound Mapping - R1
16 4 318 2 Sound Mapping - R2
16 4 324 65535 Sound Mapping - TRIGGERED


Demonstration

Coming Soon!

Decoder Service and Repair

For service/repair, contact the Bachmann Service Department by visiting www.bachmanntrains.com/home-usa/service.php, calling 1-800-356-3910 (toll-free within the U.S. and Canada), or emailing service@bachmanntrains.com. Bachmann’s Service Department is available Monday thru Friday, 8:30 AM to 4:30 PM ET.

You can also send your locomotive to: Bachmann Trains Service Department 1400 East Erie Avenue Philadelphia, PA 19124

Please include a detailed description of your concern and complete contact information. For some service issues regarding DCC sound decoders, the Bachmann Service Department may forward your locomotive to TCS for resolution.

Bachmann DCC Sound Value On Board

Bachmann DCC Sound Value Logo.jpg

Bachmann Logo (2020).jpg"DCC Sound Value On Board" is a registered Trademark of Bachmann Industries Inc. and is used with permission by Train Control Systems Inc. (TCS)