The TCS UNIV-SH6-C is a ready-to-use universal WOWSpeaker enclosure with the 13.6mm x 9.6mm speaker included. Micro speakers need an enclosure or a sealed shell cavity to actually produce sound — this closed-back housing channels both the front and rear audio out the front, so you get clear, full WOWSound the moment you install it. Pair it with a sound decoder from our DCC Decoders collection, browse more DCC Accessories, or shop the full Train Control Systems lineup. Features Universal WOWSpeaker enclosure with the 13.6mm x 9.6mm speaker included — no separate baffle to build. Closed-back design channels front and rear audio out the front for clear, full-bodied sound. Ready to drop into your locomotive and wire to any WOWSound or other-brand sound decoder. 8 Ω WOWSpeaker — works with TCS WOWSound and most other-brand DCC sound decoders. Works with any scale that has room to mount it. More Information Brand Train Control Systems (TCS) Item Number 1713 Type WOWSpeaker Enclosure (speaker included) Size 13.6mm x 9.6mm speaker Impedance 8 Ω Condition New FAQ What decoders does this work with?It's an 8 Ω speaker that works with TCS WOWSound decoders and virtually any other DCC sound decoder rated for an 8-ohm load. Do I need to build an enclosure?No — the enclosure is included and the speaker is already mounted, so it is ready to install and wire. What scales can use it?Any scale with enough room to mount it. Smaller drivers suit N and HO; larger round and high-bass speakers shine in HO, O, and G.
$16.99
The TCS UNIV-SH5-C is a ready-to-use universal WOWSpeaker enclosure with the 16mm x 9mm speaker included. Micro speakers need an enclosure or a sealed shell cavity to actually produce sound — this closed-back housing channels both the front and rear audio out the front, so you get clear, full WOWSound the moment you install it. Pair it with a sound decoder from our DCC Decoders collection, browse more DCC Accessories, or shop the full Train Control Systems lineup. Features Universal WOWSpeaker enclosure with the 16mm x 9mm speaker included — no separate baffle to build. Closed-back design channels front and rear audio out the front for clear, full-bodied sound. Ready to drop into your locomotive and wire to any WOWSound or other-brand sound decoder. 8 Ω WOWSpeaker — works with TCS WOWSound and most other-brand DCC sound decoders. Works with any scale that has room to mount it. More Information Brand Train Control Systems (TCS) Item Number 1712 Type WOWSpeaker Enclosure (speaker included) Size Enclosure 0.71" x 0.35" x 0.26" (18 x 9 x 6.5 mm); 16mm x 9mm speaker Impedance 8 Ω Condition New FAQ What decoders does this work with?It's an 8 Ω speaker that works with TCS WOWSound decoders and virtually any other DCC sound decoder rated for an 8-ohm load. Do I need to build an enclosure?No — the enclosure is included and the speaker is already mounted, so it is ready to install and wire. What scales can use it?Any scale with enough room to mount it. Smaller drivers suit N and HO; larger round and high-bass speakers shine in HO, O, and G.
$16.99
The 30 mm (1.18") round, 5.7 mm deep WOWSpeaker produces the clarity and volume of a much larger driver, making it ideal for tight installations that still demand BIG sound. Pair it with a sound decoder from our DCC Decoders collection, browse more DCC Accessories, or shop the full Train Control Systems lineup. Features 30 mm (1.18") round, 5.7 mm deep driver delivers big, clear sound from a compact footprint. Great for tight HO and N installs that still need real volume. 8 Ω WOWSpeaker — works with TCS WOWSound and most other-brand DCC sound decoders. Works with any scale that has room to mount it. More Information Brand Train Control Systems (TCS) Item Number 1696 Type WOWSpeaker (DCC sound speaker) Size 30 mm (1.18") round, 5.7 mm deep Impedance 8 Ω Condition New FAQ What decoders does this work with?It's an 8 Ω speaker that works with TCS WOWSound decoders and virtually any other DCC sound decoder rated for an 8-ohm load. Do I need an enclosure or baffle?Yes. Speakers need a sealed enclosure or baffle (or a sealed cavity in the shell) to move air and produce full sound — mounting it in open air will sound thin. What scales can use it?Any scale with enough room to mount it. Smaller drivers suit N and HO; larger round and high-bass speakers shine in HO, O, and G.
$8.99
Keep your DCC-equipped locomotives running smoothly through dirty track, turnouts, and dead frogs with the TCS 1669 KA5 Keep Alive. This compact stay-alive device packs five supercapacitors to store backup power, providing approximately 6 to 20 seconds of uninterrupted operation when track power is lost. It's a must-have upgrade for any decoder-equipped engine that stalls on problematic trackwork. Looking for more DCC accessories? Browse our DCC Accessories collection. Features Five supercapacitors provide 6-20 seconds of backup power (depending on locomotive and motor efficiency) Eliminates stalling on dirty track, turnouts, dead frogs, and problematic trackwork Compact size: 1.325" x 0.45" x 0.347" (33.45mm x 11.45mm x 8.80mm) fits inside most HO and larger locomotives Simple two-wire installation: Blue and Black w/ White Stripe leads connect directly to any Keep Alive-ready decoder Compatible with all TCS decoders and any other Keep Alive-ready decoders Input voltage: 12-16V DC Scale: Any Scale works with all gauges and scales More Information Brand Train Control Systems (TCS) Item Number 1669 Scale Any Scale Product Type Keep Alive / Stay-Alive Device Supercapacitors 5 Dimensions 1.325" x 0.45" x 0.347" Input Voltage 12-16V DC Wiring Blue and Black w/ White Stripe (2-wire) Condition New UPC 879508008180 FAQ How long will the KA5 keep my locomotive running without track power?The KA5 provides approximately 6 to 20 seconds of backup power with headlights on, depending on the locomotive's motor efficiency and power draw. What decoders is this compatible with?The KA5 works with all TCS decoders and any other Keep Alive-ready decoders from other manufacturers. Check your decoder's documentation for a Keep Alive connection point. Will this fit inside my locomotive?At 1.325" x 0.45" x 0.347", the KA5 fits inside most HO scale and larger locomotives. Measure your available space before ordering. N scale installations may require creative placement. Is soldering required for installation?Yes. You will need to solder the two included wires (Blue and Black w/ White Stripe) to the Keep Alive pads on your decoder. Basic soldering skills are required.
$25.99
The WAUX-KA5 is designed specifically for use with the TCS WOW101 decoder. It's a Keep-Alive® energy storage device that supplies continuous power to the decoder whenever the locomotive loses track contact, paired with a built-in auxiliary harness that also routes the decoder's auxiliary outputs for additional functions. The KA5 packs five supercapacitors for higher storage capacity and peak voltage than a KA3 or KA4, keeping your locomotive moving and headlights lit for roughly 6–20 seconds through dirty track, frogs, and other dead spots. Shop more DCC Accessories and Train Control Systems products. Features Designed for use with the TCS WOW101 decoder (not compatible with other decoders without modification) Five supercapacitors for maximum storage capacity and peak charging voltage Includes auxiliary harness for the WOW101's additional function outputs Keeps DCC locos running 6–20 seconds through dead spots and dirty track Keeps headlights, sound, and motor alive during power interruptions Compact form factor fits most HO scale locomotives; also usable in larger scales More Information Brand Train Control Systems (TCS) Item Number 1685 (WAUX-KA5) Product Type DCC Keep-Alive Capacitor with Auxiliary Harness Compatibility TCS WOW101 decoder only Capacitor Count 5 supercapacitors Run-On Time Approx. 6–20 seconds for an HO-scale locomotive Scale Compatibility Any scale running a WOW101 decoder Condition New FAQ Will this work with any TCS decoder?No. The WAUX-KA5 is built specifically for the TCS WOW101 decoder. For other TCS decoders, use the KA5-P or another appropriate Keep-Alive model. What's the difference between this and the KA5-P?Both use the same 5-supercapacitor bank, but the WAUX-KA5 adds a dedicated auxiliary harness wired for the WOW101's extra function outputs. The KA5-P has a simpler 2-pin plug for decoders with a standard Keep-Alive socket. How long does it keep the loco running?Roughly 6–20 seconds depending on the locomotive's motor efficiency and what lighting/sound functions are active. Do I need to solder anything?No. The harness is pre-wired with the connectors needed for a WOW101 installation.
$30.99
The TCS 2006 KA5-P is a Keep-Alive® energy storage device designed to supply continuous power to your DCC decoder when a locomotive hits dirty track, a frog, or any other spot where electrical pickup falters. The KA5 packs five supercapacitors for higher storage capacity and peak voltage than a KA3 or KA4, keeping your loco moving and headlights lit for roughly 6–20 seconds of power interruption. The "-P" version ships pre-wired with a 2-pin JST plug and matching socket, making it a drop-in upgrade for compatible TCS decoders without any soldering. Shop more DCC Accessories and Train Control Systems products. Features Five supercapacitors for maximum storage capacity and peak charging voltage Pre-wired with a 2-pin JST plug and mating socket — no soldering required Keeps DCC locos running 6–20 seconds through dead spots and dirty track Keeps headlights, sound, and motor alive during power interruptions Works with any TCS decoder equipped with a Keep-Alive socket (and most other manufacturers' decoders with appropriate wiring) Compact form factor fits most HO scale locomotives; can also be used in larger scales More Information Brand Train Control Systems (TCS) Item Number 2006 (KA5-P) Product Type DCC Keep-Alive Capacitor Connector 2-pin JST plug with matching socket (pre-wired) Capacitor Count 5 supercapacitors Run-On Time Approx. 6–20 seconds for an HO-scale locomotive Scale Compatibility Any scale with a compatible DCC decoder Condition New FAQ What does a Keep-Alive actually do?It stores electrical energy in supercapacitors and releases it to your decoder whenever track power drops out, keeping the loco moving, lights on, and sound playing through short interruptions. How is the KA5 different from the KA3 or KA4?The KA5 adds a fifth supercapacitor, giving it higher peak voltage and longer run-on time than the older three- and four-cap versions. Do I need to solder this?No. The -P version comes pre-wired with a 2-pin JST plug and socket. Plug it into a compatible TCS decoder and you're done. Will it fit in my locomotive?The KA5 is a compact rectangular board designed to fit most HO locomotives. For tighter installations, consider one of TCS's smaller Keep-Alive models.
$25.99
The TCS 1718 is a tough little 17mm x 12mm "Micro WOW" sugar-cube speaker hand-picked by Train Control Systems to fit in tight spaces — originally selected for the Bachmann N-scale Siemens Charger — but at just 2.25mm tall it slips into all sorts of HO, N, and other small-locomotive sound projects. It ships pre-wired with 4 inches (100mm) of twisted-pair 32AWG leads, so you can drop it in without crimping anything. Looking for more DCC sound parts and decoder accessories? Browse our Track Tools & Accessories collection. Features Compact 17mm x 12mm x 2.25mm footprint — small enough to fit in the boiler, fuel tank, or shell of an N-scale or HO-scale locomotive where most speakers won't go. 1.0W nominal / 1.5W peak power handling at 8 Ohms — pairs perfectly with TCS WOWSound and most modern DCC sound decoders. 95 dB ± 3 dB SPL with an effective frequency band from 870 Hz to 20 kHz — clear, accurate sound across the whole locomotive audio range. Pre-installed 4-inch (100mm) twisted-pair 32AWG leads — ready to wire to your decoder without any soldering of speaker tabs. Multi-scale — designed by TCS for the Bachmann N Siemens Charger and works in any locomotive shell with room for a 17 x 12mm speaker. Scale: Multi-scale (commonly used in N and HO). Important Safety Note TCS WOWSound decoders use an audio amplifier capable of supplying up to 2 Watts of power to an 8 Ohm load at maximum volume. Set your master volume to roughly 50% or less to prevent over-driving and damaging the decoder or speaker. The same rule applies to any DCC sound decoder rated above the speaker's 1W nominal continuous power. More Information Brand Train Control Systems (TCS) Item Number 1718 Product Type Micro WOW Speaker (sugar cube) Dimensions 17mm x 12mm x 2.25mm (0.67" x 0.47" x 0.09") Impedance 8 Ohms (±20% at 1.0W, 2000 Hz) Power Rating 1.0W nominal / 1.5W peak Sound Pressure 95 dB ± 3 dB (1.0W, 10cm, 2.0 kHz) Frequency Range 870 Hz - 20,000 Hz Wiring 4-inch (100mm) pre-installed twisted-pair 32AWG leads Scale Multi-scale (designed for N, also fits HO and similar) Condition New UPC 879508008258 FAQ Will this fit in my locomotive?If the shell or fuel tank has at least 17 x 12 x 3mm of clear space, yes. TCS selected this speaker specifically because it fits the Bachmann N-scale Siemens Charger, but it's small enough for many other locomotives. Measure the space first — the wires add a little overall length. What decoders does it work with?Any 8-ohm-compatible DCC sound decoder — TCS WOWSound, ESU LokSound, SoundTraxx Tsunami2/Econami, Digitrax SoundFX. The 8 Ohm impedance is the universal standard. Do I need to solder anything?Not to the speaker — the twisted-pair leads are already factory-installed. You only need to connect the two wires to your decoder's speaker pads. Should I add a baffle or enclosure?For best bass response, yes — even a small sealed cardboard or 3D-printed enclosure makes a noticeable difference. But it'll still sound great without one.
$8.99
This 16 x 9 mm "sugar cube" WOWSpeaker is a cell-phone-style driver that disappears into the tightest installs. It needs a sealed baffle or enclosure to perform, but once mounted it delivers surprisingly big sound for its size — perfect for space-restricted N and HO projects. Pair it with a sound decoder from our DCC Decoders collection, browse more DCC Accessories, or shop the full Train Control Systems lineup. Features Ultra-compact 16 x 9 mm "sugar cube" driver for the tightest installations. Requires a sealed baffle or enclosure — once mounted, output far exceeds its size. 8 Ω WOWSpeaker — works with TCS WOWSound and most other-brand DCC sound decoders. Works with any scale that has room to mount it. More Information Brand Train Control Systems (TCS) Item Number 1699 Type WOWSpeaker (DCC sound speaker) Size 16 x 9 mm sugar-cube Impedance 8 Ω Condition New FAQ What decoders does this work with?It's an 8 Ω speaker that works with TCS WOWSound decoders and virtually any other DCC sound decoder rated for an 8-ohm load. Do I need an enclosure or baffle?Yes. Speakers need a sealed enclosure or baffle (or a sealed cavity in the shell) to move air and produce full sound — mounting it in open air will sound thin. What scales can use it?Any scale with enough room to mount it. Smaller drivers suit N and HO; larger round and high-bass speakers shine in HO, O, and G.
$13.95 $11.19
The Train Control Systems KA2-P Keep-Alive® is a compact stay-alive capacitor pack that feeds backup power to your DCC decoder whenever the wheels lose contact with the rails. No more stalling on dirty track, dead frogs, or insulated turnouts. The KA2-P comes in at about half the size of a KA4 and delivers roughly one-third the capacitance of a KA3/KA4, making it a great choice where space is tight in N and smaller HO locomotives. This is the harness-equipped version: it ships with a 2-Pin Quick Connector Harness that plugs straight into any decoder with a compatible 2-pin Keep-Alive socket, such as the TCS T4 and other current TCS decoders — no soldering to the decoder required. Browse more decoder add-ons in our DCC Accessories collection, shop the full Train Control Systems lineup, or pair it with a new sound decoder from our DCC Decoders collection. Features Keep-Alive® stay-alive capacitor pack eliminates stalling on dirty track, dead frogs, and insulated rail joints. Compact — about half the size of a KA4; delivers roughly one-third the capacitance of a KA3/KA4. Includes a 2-Pin Quick Connector Harness — plugs into the TCS T4 and other decoders with a compatible 2-pin socket, no decoder soldering needed. Dimensions: 0.35" x 0.35" x 0.61" (8.9 x 8.9 x 15.5 mm). Input rating 12–16V; works with any scale and any DCC system. More Information Brand Train Control Systems (TCS) Item Number 2003 (KA2-P) Type Keep-Alive / Stay-Alive Capacitor Pack Connection 2-Pin Quick Connector Harness Dimensions 0.35" x 0.35" x 0.61" (8.9 x 8.9 x 15.5 mm) Input Rating 12–16V Scale Any Scale Condition New FAQ What does a Keep-Alive actually do?It stores an electrical charge and feeds it to your decoder when track power drops out, so the locomotive keeps moving and its lights and sound stay on across dirty track, frogs, and gaps. Will the KA2-P plug into my decoder?The included 2-pin harness plugs into TCS decoders with a compatible Keep-Alive socket (such as the T4) and most current TCS decoders. For decoders without a 2-pin socket, you can solder the leads to the decoder's keep-alive pads — check your decoder's manual first. Why choose the KA2-P over a larger KA3/KA4?It's much smaller and fits where bigger packs won't — ideal for N scale and cramped HO shells. It holds less charge, so for longer run-through use a KA3 or KA4 if you have the room.
$26.99
The Train Control Systems KA1-P Keep-Alive® is TCS's most compact stay-alive capacitor pack — about half the size of a KA3 — feeding backup power to your DCC decoder whenever the wheels lose contact with the rails. No more stalling on dirty track, dead frogs, or insulated turnouts. The KA1 delivers roughly one-third the capacitance of a KA3/KA4, making it the go-to choice when space is tight in N and smaller HO locomotives. This is the harness-equipped version: it ships with a 2-Pin Quick Connector Harness that plugs straight into any decoder with a compatible 2-pin Keep-Alive socket, such as the TCS T4 and other current TCS decoders — no soldering to the decoder required. Browse more decoder add-ons in our DCC Accessories collection, shop the full Train Control Systems lineup, or pair it with a new sound decoder from our DCC Decoders collection. Features TCS's smallest Keep-Alive® — about half the size of a KA3 — ideal for N and tight HO installs. Eliminates stalling on dirty track, dead frogs, and insulated rail joints. Includes a 2-Pin Quick Connector Harness — plugs into the TCS T4 and other decoders with a compatible 2-pin socket, no decoder soldering needed. Ultra-compact: 1.063" x 0.35" x 0.244" (27 x 8.9 x 6.2 mm). Input rating 11–16V; works with any scale and any DCC system. More Information Brand Train Control Systems (TCS) Item Number 2002 (KA1-P) Type Keep-Alive / Stay-Alive Capacitor Pack Connection 2-Pin Quick Connector Harness Dimensions 1.063" x 0.35" x 0.244" (27 x 8.9 x 6.2 mm) Input Rating 11–16V Scale Any Scale (best for N & HO) Condition New FAQ What does a Keep-Alive actually do?It stores an electrical charge and feeds it to your decoder when track power drops out, so the locomotive keeps moving and its lights and sound stay on across dirty track, frogs, and gaps. Will the KA1-P plug into my decoder?The included 2-pin harness plugs into TCS decoders with a compatible Keep-Alive socket (such as the T4) and most current TCS decoders. For decoders without a 2-pin socket, you can solder the leads to the decoder's keep-alive pads — check your decoder's manual first. Why choose the KA1 over a larger KA3/KA4?The KA1 is much smaller and fits where bigger packs won't — perfect for N scale and cramped HO shells. It holds less charge, so for longer run-through use a KA3/KA4 if you have the room.
$24.99
The TCS WOW101 is a universal WOWSound decoder for HO locomotives with a 9-pin JST plug, or any loco that can't accept a motherboard or WOWKit. It plugs straight into a 9-pin socket or hard-wires in, works with TCS T-Series harnesses, and includes an auxiliary harness for your speaker, CAM, and Keep-Alive connections. 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. An on-board Keep-Alive® keeps it running smoothly across dirty track and dead frogs — no add-on capacitor needed. 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. Plugs into a 9-pin JST socket or hard-wires in; compatible with TCS T-Series harnesses. On-board Keep-Alive® for stutter-free operation over dirty track. More Information Brand Train Control Systems (TCS) Item Number 1517 Decoder WOW101-KA Type WOWSound DCC Sound Decoder Sound Steam Connection 9-pin JST plug or hard-wire (T-Series harness compatible) On-board Keep-Alive Yes Scale HO Scale Condition New FAQ Will this decoder fit my locomotive?The WOW101 suits any HO loco with a 9-pin JST plug or one you can hard-wire. It is compatible with TCS T-Series plug-and-play harnesses for many popular models. 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.
$109.99
The TCS 1516 WOW101 Steam is a universal WOWSound decoder for HO locomotives with a DCC-ready 9-pin JST plug, or any locomotive that can't take a motherboard or WOWKit. It plugs straight into a 9-pin socket or hard-wires in, works with any TCS T-Series harness, and includes an auxiliary harness for your speaker, CAM, Keep Alive and the extra F3 and F4 lighting functions. The steam sound set uses TCS's Chuffinity chuff library and True Scale Sound, which changes chuff intensity with the load, and the CAM input lets you synchronize the chuff to your drivers. Pair it with a WOWSpeaker sized for your locomotive. Specifications Brand Train Control Systems (TCS) Item Number 1516 UPC 879508004700 Decoder WOW101-Steam Type WOWSound DCC sound decoder Sound Steam Audio 16-bit, 44.1 kHz sample rate Connection 9-pin JST plug or hard-wire, T-Series harness compatible Keep Alive Not built in; connection on the auxiliary harness Lighting 20 programmable effects, F3 and F4 on the auxiliary harness LED Resistors Not on board; use external resistors with LEDs Speaker Not included Scale HO Condition New Features HD-quality WOWSound: 16-bit audio at a 44.1 kHz sample rate Steam sound set with Chuffinity, a large chuff library that never falls into a repeating pattern True Scale Sound changes chuff intensity with the load CAM input to synchronize the chuff to driver rotation Rotate through every whistle and bell on the decoder with one button Plugs into a 9-pin JST socket or hard-wires in; compatible with any TCS T-Series harness Back-EMF load compensation for smooth slow-speed control Quiet Drive motor control for buzz-free running Automatic DC mode detection Variable momentum and user-loadable speed tables 20 user-programmable lighting effects with dimmable brightness Function remapping on F0 through F12; supports 12 volt bulbs Decoder Lock and Airwire compatibility Audio Assist menu programming: set up sound and CVs on the track, no computer required Frequently Asked Questions Do I need a separate speaker?Yes. A speaker is not included. Choose one sized for your locomotive from our DCC Speakers. Can I use LED lighting?Yes, with external resistors. WOW101 decoders do not have on-board resistors. Can I add a Keep Alive?Yes. The auxiliary harness has a Keep Alive connection, and the TCS 1517 WOW101-KA Steam is the same decoder with Keep Alive built in. Will this decoder fit my locomotive?It suits HO locomotives with a 9-pin JST plug, or ones you can hard-wire, and it works with TCS T-Series plug-and-play harnesses. What is Audio Assist?TCS's spoken programming menu. Your throttle and the decoder's own voice prompts walk you through sound and CV setup, so you don't need a programming track or a computer. Is there a diesel version?Yes, the TCS 1530 WOW101 Diesel. Explore More Browse more DCC Decoders, shop the full Train Control Systems lineup, or find a matching DCC Speaker.
$88.99
