Sound Modules

A selection of sound modules for model rail and boats. Suitable speakers are on a separate page.

Both sound modules have 1 or more trigger inputs (horn, whistle, etc). These require switching to ground/negative to action the sound. A Micron F switch pad is ideal for this. MyLocoSound triggers may also be controlled using a receiver P output which is a 0V/3.3V logic level - a series 4k7 ohm resistor is required Configure the P output to be high when off and low (0V) when the sound is to be triggered. Mtroniks triggers require a receiver F output or a separate switcher module.

MyLocoSound Large Scale Sound Module

Sound modules for the larger scale railways: O Gauge, SM32, Gauge 1 & 3 and G Scale. Highly adjustable to suit a wide variety of UK, European and USA locomotives.

The Classic cards have been discontinued.

To achieve great realism, MyLocoSound Universal uses a blend of recorded sounds from actual locos with the adjustability of synthesised sound. A handheld remote control is used to make all adjustments and to configure the sound module from outside the locomotive. This remote control is available separately as only one is needed to work with any number of MyLocoSound modules.

Dimensions: 55mm x 32mm x 12mm. Working voltage: 9V - 24V, 24V is an absolute maximum.

Whilst ideal for use with a Micron receiver (e.g. MR603), the MyLocoSound Large Scale Sound Module also works well with simple track powered model railways. On these, the sounds can be triggered in three ways:

  1. the steam whistle and diesel/electric horn can be set to sound automatically when the loco moves off and at timed intervals when running;
  2. trackside magnets and loco mounted reed switches can be used to trigger any of the sounds at selected positions on the railway;
  3. the remote control can be used to trigger any of the sounds, but only from short distances
When triggering from a Micron MR603 receiver, F outputs may be connected directly to the MyLocoSound trigger inputs, P outputs require a series 4k7 ohm resistor to compensate for the 3.3V on the receiver side and 5V on the MyLocoSound side.

Full setup and usage information for the Premium sound cards can be found in the PDF copy of the user manual:

British steam (ver 23A), USA steam (ver 23C), British diesel (ver 21A), USA diesel (ver 22B), Light Industrial (ver 20G), RailBus (ver 19E),

IR Remote for sound module setup and volume control: £ 9.00

Sound samples: Industrial Diesel

Mtroniks digiSound

The Mtroniks digiSound modules are 100% waterproof, plug-n-play sound module designed to take the hassle out of giving your model a realistic sound. Primarily designed for R/C boats, the sounds are also appropriate for small diesel rail locomotives.

The sound module has an input voltage range of 6V - 12V and requires NO programming or set up. It comes with a realistic sound pre-installed leaving just the installation to complete before you can get under way. The unit comes complete with built in amplifier, wiring loom and a 80.0mm diameter waterproof speaker (83mm sq mounting plate). You simply install the unit in your model and go.

Micron stocks 4 versions of the digiSound module and you can hear a sample of the sound by clicking on the link:

The module has inputs for start/stop of the engine sound and for sounding a horn - both of these are simple short-to-ground type inputs so can be easily switched using Micron MR603 receiver 'F' outputs. An external FET switch will be required for other receivers as the digiSound trigger input draws too much current for 'P' outputs.

Dimensions: 40mm x 35mm x 15mm. The connectors are on the top of the module and this increases the height to approx 30mm with the supplied plug and wiring harness. The overall height can be reduced to approx 20mm by carefully bending the header pins on the module through 90°.

The included 80mm speaker is dust and water proof so it is safe to use outside. However , it is too large for most railway scales, we have a selection of smaller speakers that can be used singly or in combination to fit the space available in a loco or trailing van/coach.

You should always install your speaker into a suitable enclosure to ensure the best power handling, frequency and bass response. The sound volume can be adjusted using a small screwdriver. The digiSound instruction manual contains helpful information on installation and use.