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DIGITRAX


HO Sound FX Decoders



SDH104K1A+FN04K1 Combo
Fits Kato AC4400 units
 


     
 


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


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


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


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.


Digitrax Worldwide

The PR2 Programmer The PR2 lets SoundFX users download new Project sound files and even reflash the decoder's firmware for latest updates.

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

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