Steam / Steam-2

The SoundTraxx 884013 is a TSU-21PNEM8 Tsunami2 digital sound decoder with the Steam sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the 21-pin MTC plug-in decoder, rated 1A and suited to HO scale and larger. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 63 selectable whistles, 10 exhaust chuffs, 12 bells, 10 airpumps and 8 dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Independent and train brakes with adjustable rates Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 8 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 884013 Model: TSU-21PNEM8 Tsunami2 Sound Set: Steam Steam Scale: HO scale and larger Decoder Size: 30.5 x 15.5 x 6.5mm Connection: 21-pin NEM (21MTC) plug Max. Motor Stall Current: 1A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Steam sound profile decoders. A speaker is not included — browse DCC speakers rated 2 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 30.5 x 15.5 x 6.5mm and connects by 21-pin nem (21mtc) plug. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The TCS WOW121 is a universal WOWSound decoder for HO locomotives with a 21-pin MTC (NEM660) connector. It interfaces through a TCS motherboard, which sets how many lighting functions the install supports and whether they drive LEDs or 1.5V/12V bulbs. This is the Steam version, delivering TCS's authentic steam sound set with synchronized chuff and a full suite of whistle, bell, and running effects. Pick a matching speaker from our DCC Accessories collection, browse more DCC Decoders, or shop the full Train Control Systems WOWSound lineup. Features CD-quality WOWSound — 16-bit audio at a 44.1 kHz sample rate. Authentic TCS's authentic steam sound set with synchronized chuff and a full suite of whistle, bell, and running effects. Back-EMF load compensation for superior slow-speed control under load. Quiet Drive super-quiet motor control for buzz-free running. Variable Momentum for custom acceleration and deceleration curves. Audio Assist® menu programming — set up sound and CVs right on the track, no computer required. 21-pin MTC (NEM660) connector — interfaces through a TCS motherboard. More Information Brand Train Control Systems (TCS) Item Number 1525 Decoder WOW121 Type WOWSound DCC Sound Decoder Sound Steam Connection 21-pin MTC / NEM660 (requires a TCS motherboard) On-board Keep-Alive No Scale HO Scale Condition New FAQ Will this decoder fit my locomotive?The WOW121 is for HO locos with a 21-pin MTC (NEM660) connector and requires a TCS motherboard to interface with the loco and its lighting. Do I need a separate speaker?Yes — this is the decoder only. Add a WOWSpeaker (or any 8 Ω DCC speaker) sized for your locomotive to hear the sound. What is Audio Assist?It's TCS's on-the-fly programming menu that walks you through sound and CV setup using your throttle and the decoder's own spoken prompts — no programming track or computer needed.

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Maximize the performance of your N scale model trains with the Digitrax DN167N18 mobile decoder. This plug-in Next18 decoder offers advanced control and smooth operation, enhancing the realism of your layout. With its compact design and easy installation, it's the perfect upgrade for your locomotives. Mobile Decoder Fits Next18 socket locomotives Plug-in Next18 connector Motor drive at connector capacity 6 FX3 Functions More Information Item # DN167N18 Brand Digitrax Scale N MSRP $36.00 TCA Grading C-10 Mint - Brand New Availability In-Stock/Restockable Manuals Instruction Sheet

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This Digitrax SDH187MT is a high-quality Series 7 Sound Decoder designed for HO Scale models. With advanced sound technology, this decoder brings realistic audio to your train layout. Its compact design and easy installation make it a must-have for any model train enthusiast. 2 CV-Selectable Steam & Diesel Sound Schemes Included Mobile Decoder with SoundFX v3 Fits many HO locomotives 21MTC interface Motor 1.0 Amp/2 Amps Peak 8 FX3 Functions, 200ma Output New sound .spjs loadable with Digitrax USB programmer More Information Item # SDH187MT Brand Digitrax Scale HO Scale MSRP $55.00 TCA Grading C-10 Mint - Brand New Availability In-Stock/Restockable Manuals Instruction Sheet

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The SoundTraxx 884010 is a TSU-N18 Tsunami2 digital sound decoder with the Steam-2 sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is the Next18 decoder for N and small HO models, rated 1A and suited to N and small HO models with a Next18 socket. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 90 selectable whistles — 27 more than the standard Steam set — plus 10 exhaust chuffs, 12 bells, 10 airpumps and 8 dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Independent and train brakes with adjustable rates Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 6 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 884010 Model: TSU-N18 Tsunami2 Sound Set: Steam-2 Steam Scale: N and small HO models with a Next18 socket Decoder Size: 25 x 9.5 x 4.1mm Connection: Next18 (N18) socket Max. Motor Stall Current: 1A Function Outputs: 6 Audio Amplifier: 1 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Steam-2 sound profile decoders. A speaker is not included — browse DCC speakers rated 1 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 25 x 9.5 x 4.1mm and connects by next18 (n18) socket. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 1 watt or better that fits your shell. How is Steam-2 different from the standard Steam set?The chuffs, bells, airpumps and dynamos are the same. The difference is the whistle library: Steam-2 offers 90 whistles against 63 on the standard Steam set, with many roadname-specific additions. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The Digitrax SDXN147A0 puts motor control, lighting and SoundFX into one N scale board decoder, and it ships with the oval speaker already matched to it. It is a drop-in for many Atlas N locomotives, which means no harness to route and no hunting for a speaker that fits - the hardest part of an N scale sound install is already solved. Building a DCC fleet? Browse our DCC Decoders, DCC Speakers, and DCC Accessories. Features Sound, motor and lighting in one N scale board - a drop-in fit for many Atlas N locomotives. 8 ohm 9 x 18 x 4mm oval speaker included, sized for N scale shells. No guesswork about what will fit. 1.0 amp continuous, 2.0 amps peak - plenty for an N scale motor. 4 FX3 function outputs at 200mA for headlights and lighting effects alongside the sound functions. SoundFX prime mover, horn and bell, with CV-adjustable volume and sound scheme. More Information Brand Digitrax Item Number SDXN147A0 Product Type DCC Sound and Motor Decoder Scale N Motor Current 1.0 A continuous / 2.0 A peak Function Outputs 4 x FX3, 200 mA Sound Yes - SoundFX Speaker Included Yes - 8 Ohm, 9 x 18 x 4 mm oval Connection Drop-in board for many Atlas N locomotives Series Digitrax Series 7 Condition New FAQ Will it fit my N scale locomotive?It is designed as a drop-in for many Atlas N models. Board decoders are shape-specific, so pull the shell and compare the factory board footprint and light positions before ordering. If it does not match, a wired N decoder is the fallback. Do I need to buy a speaker separately?No. The matched 8 ohm oval speaker is in the box. You will still get noticeably better sound if you fit it against a baffle or a sealed pocket in the shell rather than leaving it loose. Can I change the sound scheme?Yes. SoundFX schemes and volumes are set through CVs, so you can adjust horn, bell and prime mover to suit the prototype you are modelling. Do I need a Digitrax command station?Not for running - it works on any NMRA DCC system. Loading new sound files does require a Digitrax programmer.

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The SoundTraxx 884011 is a TSU-1100 Tsunami2 digital sound decoder with the Steam sound set. Tsunami2 combines a 16-bit sound system, Hyperdrive2 motor control, Hyperlight lighting effects and a full NMRA-compliant DCC decoder on one board, driven by a 32-bit processor with 16 polyphonic sound channels. This version is a compact universal-style decoder for tight installs, rated 1A and suited to small models with minimal space. Dynamic Digital Exhaust reads the load on the motor and notches the engine up and down on its own, so the locomotive sounds like it is working for its train. Features 63 selectable whistles, 10 exhaust chuffs, 12 bells, 10 airpumps and 8 dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Independent and train brakes with adjustable rates Hyperdrive2 motor control for smooth, creep-speed switching Over 20 Hyperlight lighting effects across 4 function outputs 16 polyphonic sound channels on a 32-bit processor, with a 7-band equalizer and adjustable reverb CurrentKeeper ready — works with the SoundTraxx 810140 CurrentKeeper More Information Item Number: SoundTraxx 884011 Model: TSU-1100 Tsunami2 Sound Set: Steam Steam Scale: small models with minimal space Decoder Size: 27 x 10.5 x 5mm Connection: Universal-style hardwire Max. Motor Stall Current: 1A Function Outputs: 4 Audio Amplifier: 1 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other Steam sound profile decoders. A speaker is not included — browse DCC speakers rated 1 watt or better, and find install parts in DCC wiring. Add a SoundTraxx 810140 CurrentKeeper to keep sound alive over dirty track and turnouts. FAQ Will this fit my locomotive?It measures 27 x 10.5 x 5mm and connects by universal-style hardwire. Check that against the space in your shell before ordering — other Tsunami2 versions use different connectors and sizes. Is a speaker included?No. Pair it with an 8-ohm speaker rated 1 watt or better that fits your shell. Does it run on DC?Yes. Tsunami2 runs on a standard DC power pack as well as DCC, though sound and lighting options are limited on DC. Full function control needs a DCC system.

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The Digitrax DH127MT is a Series 7 HO mobile decoder built on the 21-pin MTC connector. If your locomotive has a 21MTC socket - common on European-built and many newer North American models - this drops straight in with no soldering and no harness to route. One amp continuous, two amps peak, with two FX7 function outputs at a generous 300mA. Building a DCC fleet? Browse our DCC Decoders, DCC Speakers, and DCC Accessories. Features 21-pin MTC socket (21MT) - plugs directly into any 21MTC-equipped HO locomotive, no soldering required. 1.0 amp continuous, 2.0 amps peak - comfortable for single-motor HO diesels and steam. 2 FX7 function outputs at 300mA, enough headroom for incandescent bulbs as well as LEDs, with effects like Mars light, ditch lights and beacons. Series 7 platform with back-EMF speed stabilisation for controlled slow-speed switching. Standard NMRA DCC - runs and programs on any DCC system, not just Digitrax. More Information Brand Digitrax Item Number DH127MT Product Type DCC Mobile Decoder Scale HO Motor Current 1.0 A continuous / 2.0 A peak Function Outputs 2 x FX7, 300 mA Connection 21-pin MTC (21MT) socket Series Digitrax Series 7 Sound No - motor and function decoder only Condition New FAQ How do I know if my locomotive takes a 21MTC decoder?Pull the shell and look for a 21-pin connector on the circuit board, arranged in two rows with one pin position blanked off as a key. If you see an 8-pin or 9-pin socket instead, you need a DH127P, DH127PS or DH127D. Which way round does it plug in?The blanked pin position keys the connector so it can only seat one way. Seat it square and do not force it - a bent pin is the usual cause of a decoder that will not respond. Does it have sound?No. This is a motor and function decoder. For sound in HO, look at a Digitrax SDXH series decoder or a SoundTraxx unit, plus a speaker. Do I need a Digitrax command station?No. It is a standard NMRA DCC decoder and works on any DCC system.

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The Digitrax SFX007 adds prototype sound to almost anything on your layout. It is a sound only decoder with no motor control, so it works as a second decoder alongside the mobile decoder already in your locomotive, or on its own in rolling stock, inside a structure, or under the layout for stationary sound. Eight factory sound projects ship stacked on the decoder and you pick between them with CV60, so it is ready to run straight out of the package. An 8 ohm box speaker and a 330uF capacitor are included, and the Digitrax Easy Connect harness needs only two wires to the track. Smart Power Management keeps the decoder from tripping your booster or programmer during setup. Specifications Brand Digitrax Item Number SFX007 Decoder Type Sound only, no motor control Sound System Digitrax SoundFX v3+ Sound Memory 16 Megabit onboard Audio Up to 8 simultaneous voices, customizable 16, 12 or 8 bit Speaker Included 8 Ohm box speaker, 16 x 26 x 9 mm, 6 pin plug Capacitor 330uF, included Track Connection Digitrax Easy Connect harness, 2 wires Addressing 2 digit and 4 digit Programming Direct and Operations mode Scale All scales Compliance DCC compatible, FCC Part 15 Class B UPC 652667200653 Features Sound only design pairs with the non sound decoder already in a locomotive, so you keep the motor control you have and add sound on top. Eight factory stacked sound projects: AC4400CW, ATSF 3751, C-420, GP7, GP38-2, SD40-2, SD70MAC and UP3985. Diesel and steam are both covered. CV60 selects which of the eight projects is active. No programming track gymnastics and no download needed to switch. Reloadable with any SoundFX 8 bit or 16 bit project using the Digitrax Sound Programmer and the SoundLoader app. Compact enough to sit alongside an existing decoder in many locomotives. Use custom sounds to give rolling stock a voice, or to drive stationary and under layout sound. Smart Power Management stops the booster and programmer shutdowns that plague high draw sound decoders. Speaker and capacitor are in the package, so there is nothing else to buy to hear it run. Frequently Asked Questions Does the SFX007 control the motor?No. It is sound only. Keep the mobile decoder already in the locomotive for motor and lighting control, and let the SFX007 handle sound as a second decoder on the same address. Can I use it as an add on to a Series 5 decoder like the old SFX006?No. Digitrax states the SFX007 is not compatible as a Series 5 add on the way the SFX006 was. It installs as an independent second decoder instead. What scale is it for?All scales. The decoder and the included box speaker are sized to fit HO and larger comfortably, and the harness wiring suits O, S and G installs just as well. Do I need to buy a speaker?No. The 8 ohm 16 x 26 x 9 mm box speaker is included and plugs into the 6 pin connector, along with a 330uF capacitor. Can I change the sound later?Yes. CV60 switches between the eight projects already on board, and you can overwrite the decoder with any SoundFX project using the Digitrax Sound Programmer and SoundLoader. Will it work in rolling stock or a building?Yes. Digitrax builds this decoder for exactly that. Load a custom project and use it for a caboose, a stock car, a sawmill, or any under layout sound scene. Explore More Browse the rest of the range at Squeaky's Trains & Things: Digitrax DCC Decoders DCC Speakers DCC Wiring DCC Control Systems DCC Accessories

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