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Digitrax

Sound Decoders


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Designed for HO locomotives that draw up to 1 Amp

SFX0416 New HO & N-Scale Wired Sound Decoder for use with any existing DCC motor Decoder. 16 megabit capacity for more complex projects. 4 functions. $59.99 (shipping now)

SFX064D SoundFX+Function Combo
Wired SoundFX decoder for most HO Locomotives. Preloaded with selectable steam and diesel sound schemes. 1 Amp/1.3 Amp Peak, 4 FX3 Functions@200ma $69.95 (shipping now)

SFX004 SoundFX 'Soundbug' sound module
Buy the full featured, low cost 165 Series DCC decoders today and upgrade to sound whenever you’re ready by using the Soundbug. Digitrax Soundbug ready decoders give you the flexibility to choose when to add sound to your locomotives. $49.99 (shipping now)

SDH104K1A+FN04K1 Combo Plug'N Play for Kato AC4400 Locomotives. Preloaded with AC4400 sound scheme. 
1 Amp/1.3 Amp Peak, 4 FX3 Functions@200ma

SDH104K1B+FN04K1 Combo
Plug'N Play for Kato SD38-2 Locomotives. Preloaded with SD38-2 sound scheme. 
1 Amp/1.3 Amp Peak, 4 FX3 Functions@200ma

SDH104K1C+FN04K1 Combo
Plug'N Play for Kato F40PH Locomotives. Preloaded with F40PH sound scheme. 
1 Amp/1.3 Amp Peak, 4 FX3 Functions@200ma

New HO Scale Sound Upgradeable Products
DH165L0 This 6 function FX3 decoder is designed to fit Life-Like locomotives and others. The DH165L0 is a 1.5/2 amp rated unit. FX3 accessory function outputs rated at .5 amps $26.99

DH165A0 This 6 function FX3 decoder is designed to fit Atlas locomotives and others. The DH165A0 is a 1.5/2 amp rated unit. FX3 accessory function outputs rated at .5 amps (data sheet coming) $26.99

DH165K0 This 6 function FX3 decoder is designed to fit Kato locomotives and others. The DH165K0 is a 1.5/2 amp rated unit. FX3 accessory function outputs rated at .5 amps (data sheet coming) $27.99

DH165K1A This 6 function FX3 decoder is designed to fit Kato SD40-2 locomotives and others. The DH165K0 is a 1.5/2 amp rated unit. FX3 accessory function outputs rated at .5 amps (data sheet coming) $27.99

DH165Q1 New Plug 'N Play Decoder with SoundBug Socket for locos by Atlas, Athearn, Intermoutain, LifeLike and others that were originally factory equipped with QSI Sound $26.99



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SFX0416 SoundFX+Function Decoder

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Features:

Wired Mobile Decoder with SoundFX™+Accessory type functions for most HO scale Locomotives.

Preloaded with selectable steam and diesel Sound Schemes

Includes 28mm 8 Ohm Speaker & 330uF Capacitor

Please Note: The SFX0416 has no motor functions and is to be used in conjunction with a standard mobile decoder such as a DH123D etc.

Regarding N Scale applications:

Although the SFX0416 decoder PCB is physically small enough to fit into many types of N Scale rolling stock and dummy locomotives, for N Scale applications the standard 28mm speaker would have to be replaced with a smaller device.

Finally, the SFX0416 is an 'add-on' type sound decoder, meaning it traditionally works with a standard DCC motor decoder in locomotive applications. N-Scale locomotives generally do not have the necessary space for both the SFX0416 and a motor decoder, as such the SFX0416 is not suitable for these applications.

Current Rating 1.0 Amp (total)
Size

31mm x 10.6mm x 5.3mm

Installation Wired replacement decoder
Function Outputs 6-250mA (total 800mA)
Function Type

FX3

Features

Series 3

 


 
 
$59.99 msrp


Click Here to view SFX0416 decoder manual. 

A Note about Steam Chuff/Cam configuration: CV133 and CV134 work together to control chuff timing:

CV133 Steam Chuff/CAM config, 128=>EXT cam, 1-127=>DRIVER dia in inches[63]
CV134 Steam gear ratio trim, 32=100% ratio, [32]

Setting CV133's value from 1-127, puts the SFX064D into 'Autochuff' mode. Autochuff mode tells the decoder to simulate driver chuff timing in software. The CV133 default value is 63, approximating a real-world loco driver diameter of 63 inches. If you halve this figure you will effectively double the chuff rate for a given loco speed.

CV134 (gear ratio) also effects the Autochuff rate. The CV134 default value of 32 assumes no gear reduction. Doubling this value to 64 tells the decoder to simulate a 2:1 gear reduction thereby doubling the chuff rate. CV134 and CV133 work together to create the desired chuff rate in your locomotive.

A final note on Chuff support - Setting CV133 to a value of 128 tells the SFX064D that you want to configure an actual cam input on your locomotive. CV134-->128 tells the decoder to activate the white cam input wire on the 10 pin sound harness of the SFX064D (see diagram below)

A chuff will be triggered when a pulse of over 6 volts or DCC track voltage is seen on the white CAM input lead.  This voltage has to go off (0 volts) before the next chuff can be triggered.


SFX064D SoundFX+Function Decoder

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Features:

Wired Mobile Decoder with SoundFX™+Accessory type functions for most HO Locomotives.

Preloaded with selectable steam and diesel Sound Schemes

Includes 28mm 32 Ohm Speaker & 330uF Capacitor

Note: The SFX064D has no motor functions and is to be used in conjunction with a standard mobile decoder such as a DH123D etc

 

Current Rating 1.0 Amp (total)
Size

31mm x 16.7mm x 6.3mm

Installation Wired replacement decoder
Function Outputs 6-250mA (total 800mA)
Function Type

FX3

Features

Series 3

 


 
 
$69.95 msrp


Click Here to view SFX064D decoder manual. 

Click Here to download the latest Steam/Diesel project file for the SFX064D.

A Note about Steam Chuff/Cam configuration: CV133 and CV134 work together to control chuff timing:

CV133 Steam Chuff/CAM config, 128=>EXT cam, 1-127=>DRIVER dia in inches[63]
CV134 Steam gear ratio trim, 32=100% ratio, [32]

Setting CV133's value from 1-127, puts the SFX064D into 'Autochuff' mode. Autochuff mode tells the decoder to simulate driver chuff timing in software. The CV133 default value is 63, approximating a real-world loco driver diameter of 63 inches. If you halve this figure you will effectively double the chuff rate for a given loco speed.

CV134 (gear ratio) also effects the Autochuff rate. The CV134 default value of 32 assumes no gear reduction. Doubling this value to 64 tells the decoder to simulate a 2:1 gear reduction thereby doubling the chuff rate. CV134 and CV133 work together to create the desired chuff rate in your locomotive.

A final note on Chuff support - Setting CV133 to a value of 128 tells the SFX064D that you want to configure an actual cam input on your locomotive. CV134-->128 tells the decoder to activate the white cam input wire on the 10 pin sound harness of the SFX064D (see diagram below)

A chuff will be triggered when a pulse of over 6 volts or DCC track voltage is seen on the white CAM input lead.  This voltage has to go off (0 volts) before the next chuff can be triggered.

 


Digitrax SFX004 Soundbug Modules  Return To Top
soundbug

Digitrax Soundbug Modules:

  • Are Plug N’ Play with any 165 series decoder
  • Have Smart Power Management - no more
    booster or programmer shutdowns!
  • Can function as a standalone Stationary
  • Track-side/Under-layout sound decoder
  • With Fully customizable Digitrax SFX sound capability
  • $49.99 (shipping now)

Includes 28mm 32 Ohm Speaker & 330uF Capacitor

Click here for the SFX004 (Soundbug) user's manual.

165series

Digitrax Soundbug ready decoders give you the flexibility to choose when to add sound to your locomotives. Buy the full featured, low cost 165 Series DCC decoders today and
upgrade to sound whenever you’re ready!

  • Accepts Plug-in SFX SoundBug sound modules
  • ! amp HO motor current rating
  • 6 FX3 type functions available
  • Regulated Front and Rear Headlights: convenient no-resistor install
    for Headlight LEDs or lamp operation.
  • Full Digitrax LocoMotion System including:
    Torque Compensation. Silent operation.
    128 Speed Step operation (14 or 28 steps available).
    Momentum with accel and decel.

Circuit Board Replacement design makes installation
quick and easy.

DH165A0 Universal Soundbug ready Decoder, for; Atlas.
Athearn Genesis & many other HO Locomotives.
$26.99 msrp
DH165L0 Soundbug ready Decoder
fits many Lifelike HO Diesel Locomotives

$26.99 msrp

DH165K0 Soundbug ready Decoder
fits many Kato HO Diesel Locomotives
$27.99 msrp
DH165K1A Soundbug ready Decoder
designed to fit Kato SD40-2 locomotives and others
$26.99 msrp

 

 

 
   


Click here for the SFX004 user's manual.


SDH104K1A+FN04K1 Combo
Fits Kato AC4400 units
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Features:

Plug ‘N Play Mobile Decoder with SoundFX™ for Kato AC4400 HO Locomotives

Preloaded with AC4400 Sound Scheme

Includes 28mm 32 Ohm Speaker & 330uF Capacitor

 

Current Rating 1.0 Amp (1.3 Amps Peak)
Size

21mm x 75mm x 2.5mm

Installation Board replacement decoder
Function Outputs 4-200mA
Function Type

FX3

Features

Series 3

 


 
 
$79.98 msrp


Click here to view SHD104K1A+FN04K1 Combo decoder manual


SDH104K1B+FN04K1 Combo
Fits Kato SD38-2 units
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Features:

Plug ‘N Play Mobile Decoder with SoundFX™ for Kato SD38-2 HO Locomotives

Preloaded with SD38-2 Sound Scheme

Includes 28mm 32 Ohm Speaker & 330uF Capacitor

 

Current Rating 1.0 Amp (1.3 Amps Peak)
Size

21mm x 75mm x 2.5mm

Installation Board replacement decoder
Function Outputs 4-200mA
Function Type

FX3

Features

Series 3

 


 
 
$79.98 msrp


Click here to view SHD104K1B+FN04K1 Combo decoder manual


SDH104K1C+FN04K1 Combo
Fits Kato F40PH units
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Features:

Plug ‘N Play Mobile Decoder with SoundFX™ for Kato F40PH HO Locomotives

Preloaded with F40PH Sound Scheme

Includes 28mm 32 Ohm Speaker & 330uF Capacitor

 

Current Rating 1.0 Amp (1.3 Amps Peak)
Size

21mm x 75mm x 2.5mm

Installation Board replacement decoder
Function Outputs 4-200mA
Function Type

FX3

Features

Series 3

 


 
 
$79.98 msrp


Click here to view SHD104K1C+FN04K1 Combo decoder manual. 


New HO Scale Sound Upgradeable Products:

DH165L0 HO Scale Mobile Decoder  Return To Top


 
Features:

DH165L0 fits many Lifelike HO Diesel Locomotives GP7/SD60

Decoder Lock equipped


Current Rating 1.25 Amp (2.0 Amps Peak)
Size

2.877” x .667” x .173” with .5” stiff wires on each end

73mm x 16.9mm x 4.4 mm with 12.7mm stiff wires on each end

Installation Board Replacement

 

Function Outputs 6.500mA
Function Type

FX3

Features

Series 3

 
$26.99 msrp

Click here for full specification sheet.

Click here to view DH165L0 Instructions

DH165A0 HO Scale Mobile Decoder  Return To Top


 
Features:

DH165A0 fits Athearn Genesis, Kato, Stewart, Atlas & Other HO Locomotives.

Decoder Lock equipped


Current Rating 1.25 Amp (2.0 Amps Peak)
Size

2.877” x .667” x .173” with .5” stiff wires on each end

73mm x 16.9mm x 4.4 mm with 12.7mm stiff wires on each end

Installation Board Replacement

 

Function Outputs 6.500mA
Function Type

FX3

Features

Series 3

 
$26.99 msrp


Click here for full specification sheet.

Click here to view DH165A0 Instructions

Additional notes:

Question:

I am installing a DH165A0 in an Athearn SD70. The Head light outputs are a nominal 30 ma (with the link cut). The bulbs I am using are a bit lower in their current demands and [my lamps keep burning out].

Is there any way to lower the current output from 30ma, or do I need to add a resistor in line with the bulb to drop the voltage output? Of course, if it is supposed to be a regulated current output this might be a problem.

The Theoretical Answer:

The DH165A0 has a constant current source for F0F and F0R, so a series resistor will simply increase the terminal voltage at the selected fixed current.

To drop the lamp current, add a resistor in parallel with the lamp to bypass some of the current selected, calculating value for the  resistor:  (R = Lamp Voltage / amount of current to divert). If the resistor is too small a value it will bypass more of the current and the lamp will be dimmer.  You can try a number of values to get the best "fit"

A More Practical Answer:

If the filament lamp is burning out, try putting a 47 ohm resistor in parallel. If it's still too bright, gradually *decrease* the resistor value.

 

 


DH165K0 HO Scale Mobile Decoder  Return To Top


 
Features:

DH165K0 Fits Kato, Stewart, Atlas & Other
HO Locomotives

Decoder Lock equipped


Current Rating 1.25 Amp (2.0 Amps Peak)
Size

2.877” x .667” x .173” with .5” stiff wires on each end

73mm x 16.9mm x 4.4 mm with 12.7mm stiff wires on each end

Installation Board Replacement

 

Function Outputs 6.500mA
Function Type

FX3

Features

Series 3

 
$27.99 msrp

Click here for full specification sheet.

Click here to view DH165K0 Instructions

DH165K1A HO Scale Mobile Decoder  Return To Top


 
Features:

DH165K1A fits many Kato HO Diesel Locomotives.

Decoder Lock equipped


Current Rating 1.25 Amp (2.0 Amps Peak)
Size

2.877” x .667” x .173” with .5” stiff wires on each end

73mm x 16.9mm x 4.4 mm with 12.7mm stiff wires on each end

Installation Board Replacement

 

Function Outputs 6.500mA
Function Type

FX3

Features

Series 3

 
$27.99 msrp

Click here for full specification sheet.

Click here to view DH165K1A Instructions

DH165Q1 HO Scale Mobile Decoder  Return To Top

dh165q1
 
Features:

DH165Q1 fits Atlas, Intermountain, LifeLike & Other factory sound-equipped HO Locomotives.

Decoder Lock equipped


Current Rating 1.25 Amp (2.0 Amps Peak)
Size

2.877” x .667” x .173” with .5” stiff wires on each end

73mm x 16.9mm x 4.4 mm with 12.7mm stiff wires on each end

Installation Board Replacement

 

Function Outputs 6.500mA
Function Type

FX3

Features

Series 3

 
$26.99 msrp


Click here for full specification sheet.

Click here to view DH165Q1 Instructions

Additional notes:

 


Digitrax Worldwide

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bulletNow Shipping - The PR3 Programmer The PR3 lets SoundFX users download new Project sound files and even reflash the sound decoder's firmware for latest updates. The PR3 is different from the PR2 in that it offers a USB 2.0 interface, it offers selectable MS100 mode, and the PR3 is priced lower.

link arrowSoundLoader The free SoundLoader program gives the user the ability to overlay sounds in SoundFX project files. Customize sound schemes to suit you!

link arrowThe Sound Depot
The place where latest locomotive sound projects can be found.

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