SoundTraxx: Premium Model Train Sound Systems

The SoundTraxx 810130 is the 27mm Round Mega Bass Speaker 8-ohm 2 watt. This speaker is great for boosting the low frequencies in most diesel and “big” steam sounds. Specifications Item Number: SoundTraxx 810130 Dimensions: 27 x 14.3mm(D) Frequency Response: 350Hz – 20kHz Power: 2 Watts Impedance: 8 Ohms More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.

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The SoundTraxx 884608 is a BLU-21PNEM8 Blunami digital sound decoder with the Steam-2 sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is the 21-pin MTC plug-in Blunami, suited to HO scale and larger. Features 90 selectable whistles — the Steam-2 library carries 27 more than the standard Steam set, most of them roadname-specific — plus 12 bells, 10 airpumps and 8 dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you 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 884608 Model: BLU-21PNEM8 Blunami Sound Set: Steam-2 Steam Scale: HO scale and larger Decoder Size: 30.5 x 15.5 x 6.5mm Connection: NEM660 21MTC integral connector Max. Motor Stall Current: 1A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless 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 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 Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 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 versus 63 on the standard set, with many roadname-specific additions. Will it fit my locomotive?This one measures 30.5 x 15.5 x 6.5mm and connects by nem660 21mtc integral connector. Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The SoundTraxx 810078 is the 40 x 28.5mm Oval Speaker. This SoundTraxx 810078 40 x 28.5mm Oval Speaker offers a great sound in a versatile size for train modelers. Its 40 x 28.5mm form factor makes it easy to fit into any model, allowing you to enjoy crisp, clear sound in your train's cab. Specifications Item Number: SoundTraxx 810078 Dimensions: 40 x 28.5 x 11.3mm(D) Frequency Response: 250Hz - 20kHz Power: 1 Watt (Nominal) 2 Watts (Peak) Impedance: 8 Ohms More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.

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The SoundTraxx 885007 is a TSU-2200 Tsunami2 digital sound decoder with the ALCO 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 universal-style decoder that fits most HO diesels, rated 2A and suited to HO to S scale. 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 9 ALCO prime movers: ALCO 539 Turbo, ALCO 539 Non-Turbo, ALCO 244 Turbo, ALCO 251A i6, ALCO 251C v12, ALCO 251C v12 Super Charged, ALCO 251C v12 Century Series, ALCO 251C v16, ALCO 251C v16 Super Charged Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking 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 885007 Model: TSU-2200 Tsunami2 Sound Set: ALCO Diesel Scale: HO to S scale Decoder Size: 35 x 18 x 6mm Connection: Universal-style hardwire with an NMRA 9-pin JST harness Max. Motor Stall Current: 2A Function Outputs: 6 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 ALCO 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 35 x 18 x 6mm and connects by universal-style hardwire with an nmra 9-pin jst harness. 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. Which prime movers do I get?All 9 listed above, selectable via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. 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 SoundTraxx 810162 is the Mini Cube 3 Oval Speaker/Baffle Kit. This speaker is the Mini Cube 3. We just love the amazing sound that you can get out of this tiny speaker. The Mini Cube 3 is only 12 x 5.5 x 3mm, but the sound it produces will blow your mind! George has shown this speaker off in YouTube videos with the N-Scale TSU-KN1 decoder. Specifications Item Number: SoundTraxx 810162 Dimensions: 12.5 x 5.5 x 3mm(D) Frequency Response: 800Hz - 20kHz Power: 0.3 Watts (Nominal) 0.5 Watts (Peak) Impedance: 8 Ohms Install note: For best performance, seal the speaker to the baffle with a light RTV-style adhesive. To avoid damaging the 0.5 watt Mini Cube 3 speaker, they are best used in pairs and wired in series. More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.

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The SoundTraxx 810131 is the 28mm Square Mega Bass Speaker 8-ohm 4 watt. This is SoundTraxx’s largest Megabass speaker which provides the best low frequency bass sounds for your steam, diesel, and electric models. Specifications Item Number: SoundTraxx 810131 Dimensions: 28 x 28 x 11.2mm(D) Frequency Response: 200Hz – 20kHz Power: 4 Watts Impedance: 8 Ohms More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.

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The SoundTraxx 810114 is a 30mm round mylar speaker built for DCC sound installations in HO and larger scale model trains. With its 8 ohm impedance and 1 watt peak power handling, it pairs cleanly with SoundTraxx Tsunami2, Econami, and Blunami sound decoders to deliver authentic prime mover, horn, and bell audio — and its slim 5.3mm depth fits into shells where bigger speakers simply will not go. Need a sound decoder or speaker enclosure to go with it? Browse our SoundTraxx collection and HO Track & Accessories. Features 30mm diameter round speaker — a common fit for HO scale diesel and steam locomotive shells with room to spare Just 5.3mm deep, ideal for tight installations where vertical clearance is limited 8 ohm impedance, optimized for SoundTraxx Tsunami2, Econami, and Blunami sound decoders 0.5 watt nominal / 1 watt peak power handling for full dynamic locomotive sound Frequency response of 490Hz to 10kHz covers the full range of prime mover, horn, and bell audio Compatible with HO, S, O, and G scale installations with 30mm of clearance More Information Brand SoundTraxx Item Number 810114 Product Type DCC Sound Speaker Speaker Diameter 30mm Depth 5.3mm Impedance 8 Ohms Power Rating 0.5W Nominal / 1W Peak Frequency Response 490Hz – 10kHz Compatible Scales HO, S, O, G (any with 30mm clearance) Condition New UPC 812165020218 FAQ Will this speaker work with any DCC sound decoder?It is optimized for SoundTraxx Tsunami2, Econami, and Blunami decoders, and works with any 8 ohm-compatible sound decoder including Digitrax SoundFX, ESU LokSound, and TCS WOWSound systems. Does this speaker come with an enclosure?No — the 810114 is the bare speaker only. SoundTraxx and aftermarket suppliers offer matching baffles and enclosures separately, and adding one will noticeably improve bass response and overall sound quality. What scales is this best for?The 30mm diameter is most commonly used in HO scale diesel and steam locomotive installs, but it fits any larger scale (S, O, G) installation with enough room. For tight N scale projects, look at the smaller 20mm or 13mm SoundTraxx speakers instead. How do I wire this speaker?Solder the two pads on the back of the speaker to the speaker output leads of your sound decoder. Polarity is not critical for a single-speaker install — just keep solder joints clean and do a low-volume test before final installation. More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.

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The SoundTraxx 885624 is a BLU-PNP8 Blunami digital sound decoder with the EMD-2 sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is a drop-in replacement for the factory AT-style board in many HO diesels, suited to HO to S scale. Features 8 EMD-2 prime movers: EMD 567 12-cylinder (no transition), EMD 567C 16-cylinder non-turbo, EMD 645E 12-cylinder non-turbo, EMD 645E 12-cylinder turbo, EMD 645F 16-cylinder turbo, EMD 645E 20-cylinder turbo, EMD 710G 12-cylinder, EMD 710G 16-cylinder Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Three braking types: independent, train and dynamic braking 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 885624 Model: BLU-PNP8 Blunami Sound Set: EMD-2 Diesel Scale: HO to S scale Decoder Size: 74 x 17 x 5mm Connection: Drop-in AT-style board replacement Max. Motor Stall Current: 2A Function Outputs: 8 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD-2 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 Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 8 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. EMD-2 or plain EMD — which do I want?This is the EMD-2 set: a second collection of less-common EMD prime movers, called out by cylinder count. The plain EMD set covers the more common 567/645/710 variants. Match the list above to your prototype. Will it fit my locomotive?This one measures 74 x 17 x 5mm and connects by drop-in at-style board replacement. Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The SoundTraxx 885605 is a BLU-2200 Blunami digital sound decoder with the EMD sound set. Blunami is a Tsunami2 with a Bluetooth radio added, so it runs three ways: as a normal DCC decoder on any NMRA-compliant system, on plain DC, or in wireless mode straight from your phone or tablet. Wireless mode needs no command station and no programming track — an old DC power pack and the free Blunami app are enough, and CVs can be read and changed over Bluetooth while the locomotive is running. The app is free for iOS and Android. This version is the universal-style Blunami that fits most HO diesels, suited to HO and small S scale. Features 9 EMD prime movers: EMD 567 No Transition, EMD 567 Non-Turbo, EMD 567 Turbo, EMD Dual 567, EMD 645 Non-Turbo, EMD 645 Turbo, EMD Dual 645 Turbo, EMD 710 Turbo, EMD 710 G3C-T2 Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Bluetooth control from the free Blunami app (iOS and Android) — over 300 settings without editing a single CV by hand Dynamic Digital Exhaust (DDE) automatically matches exhaust volume and RPM to the load on the motor, and the app calibrates it for you Three braking types: independent, train and dynamic braking 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 885605 Model: BLU-2200 Blunami Sound Set: EMD Diesel Scale: HO and small S scale Decoder Size: 35 x 18 x 6mm Connection: NMRA 9-pin JST harness to hardwire Max. Motor Stall Current: 2A Function Outputs: 6 Audio Amplifier: 2 Watt, 8-Ohm Load DCC Track Voltage: 7V – 22V Sound Channels: 16 polyphonic Processor: 32-bit, 28 functions Control Modes: DC, DCC and Bluetooth wireless Shop the full SoundTraxx range, compare every DCC decoder we stock, or see the other EMD / EMD-2 Diesel 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 Do I need a DCC system to use this?No. That is the point of Blunami. It runs on a plain DC power pack with no command station at all — you control it from the free Blunami app over Bluetooth. It is also a fully NMRA-compliant DCC decoder if you already run DCC. Does the app work on Android?Yes. The free Blunami app is published for both iOS and Android. (Some older listings and dealer pages still say iOS only — that is out of date.) Is a speaker included?No. Pair it with an 8-ohm speaker rated 2 watt or better that fits your shell. Which prime movers do I get?All 9 listed above, selectable in the app or via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. EMD or EMD-2 — which do I want?This is the EMD set: the common 567, 645 and 710 prime movers. The separate EMD-2 set carries a second group of less-common variants with specific cylinder counts. Check your locomotive’s prime mover against the list above before ordering. Will it fit my locomotive?This one measures 35 x 18 x 6mm and connects by nmra 9-pin jst harness to hardwire. Check the space in your shell against that footprint before ordering — other Blunami versions use different connectors and sizes.

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The SoundTraxx 885812 is a TSU-21PNEM8 Tsunami2 digital sound decoder with the Baldwin & Other 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 12 Baldwin & Other prime movers: Baldwin VO, Baldwin 608NA, Baldwin 608A, Baldwin 606NA, Rio Grande Southern Galloping Goose, Dual Whitcomb, Fairbanks-Morse, GE GTEL UP “Slab Side”, GE GTEL UP “Veranda”, GE GTEL UP “Big Blow” A unit, GE GTEL UP “Big Blow” B unit, Cummins QSK19C x3 GenSet Over 40 air horns and 13 bells, plus air compressors, couplers and dynamos Dynamic Digital Exhaust (DDE) matches exhaust volume and RPM to the load on the motor automatically Three braking types: independent, train and dynamic braking 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 885812 Model: TSU-21PNEM8 Tsunami2 Sound Set: Baldwin & Other Diesel 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 Baldwin & Other 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. Which prime movers do I get?All 12 listed above, selectable via CV 123. You are not locked to one engine sound — pick whichever matches your prototype. 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 SoundTraxx 810157 is the Econami/Tsunami2 4-Pin Speaker Harness. Replacement 4-wire speaker and lighting harness for Tsunami2 and Econami Digital Sound Decoders. More Information Browse all DCC speakers and DCC wiring, shop the full SoundTraxx range, or pick a decoder from our DCC decoders.

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