The WOW121 is a universal sound decoder for locomotives with DCC-ready 21-pin MTC connectors, and can also be used with any of TCS' motherboards. The WOW121 requires a motherboard to interface with the locomotive. The motherboard will determine the support for the number of

lighting functions as well as the type supported (LED or 12V/1.5V bulbs). A WOW121 decoder will support up to 8 lighting functions.

Note: Function 5 and 6 are not programmable, and

will only output constant bright lights. Take this into account when wiring multiple lighting functions.

• CD-Quality Sound: TCS' world-renowned CD-quality sound. 16 Bits of resolution at 44.1kHz sample rate.

• Back EMF Load Compensation: Provides superior slow speed control and high performance under load.

• Quiet Drive: Super-quiet motor control for "buzz" free motor performance.

• DC Mode: Decoder will automatically detect DC power. You can also configure how your lighting effects function on DC.

• Variable Momentum: Allows you to make custom acceleration and deceleration curves.

• Function Remapping: Buttons 0 through 12 may be used to control the lighting functions of this decoder.

• Programmable Lighting Effects: Choose from 20 separate user-programmable lighting effects!

• Dimmable Brightness:Configure multiple different brightness levels for your LED's or incandescent bulbs.

• Decoder Lock: Feature which prevents accidental/unwanted programming while activated.

• Airwire™ Compatible: Fully compatible with Airwire™ operation.

• CAM: Use a positive voltage trigger to synchronize your chuff rate to your drivers' rotation.

• Audio Assist®: TCS exclusive auditory feedback programming system. Program your decoder without the need to memorize CV's!

• User-Loadable Speed Tables: Configure custom speed curves and set speed limits.

• Throttle Modes: Choose from multiple throttle modes to meet your operating needs.

• True Scale Sound: A unique WOWSound feature which uses TCS’ exclusive auto-adjusting BEMF technology to automatically change the intensity of the chuff. Prototype Mode also offers dynamic sound volumes which accurately model the real-life equivalent. Also includes pre-programmed acceleration and deceleration values.

• Chuffinity: By combining a massive library of chuff sounds with a state of the art algorithm, Chuffinity produces a beautiful chorus of chuff sounds without ever producing a looping or predictable pattern. Beautiful, clear, and complex chuffs that never repeat will take you trackside to the days of steam glory!

Interface Type: Direct-Plug (21-Pin MTC)

Dimensions (L x W x H): 1.28” x .69” x .22” or 32.5mm x 17.5mm x 5.6mm

Scale: HO Scale

Continuous/Peak: 1.3/2.0 Amp

Total Functions: 8

Function Rating: 100 mA

12V Outputs 8

Speaker Selection

• This decoder is optimized for 8 Ω speakers (not included).
• This decoder uses and audio amplifier capable of supplying up to 2 Watts of power to an 8 Ohm load at maximum volume. An 8 Ohm speaker with a 1 Watt minimum power rating is recommended for use with this decoder as it comes out of the package. If you are using an 8 Ohm speaker with a power rating of 2 Watts or less, you must reduce your master volume to prevent speaker failure or amplifier stress.
• The amplifier(s) on a WOWSound product can support speakers with impedance ratings as low as 4 Ohms. A reduction in impedance will require a higher power dissipation rating (more Watts) on said speaker. The minimum power requirement for a 4 Ohm speaker is 4 Watts. If you are using a 4 Ohm speaker with a power rating of 4 Watts or less, you must reduce your master volume to prevent speaker failure or amplifier stress.
• Speaker enclosures greatly increase speaker performance in most cases - improving the apparent volume by more efficiently directing the flow of air and reducing or eliminating destructive interference.