ZIMO Class 47 sound decoders

Installing a sound decoder in a model significantly increases its price. We believe it should also correspondingly increase its value. In our experience, too many sound-fitted models have been sold which fall far short of this expectation. We set ourselves the difficult challenge of providing the 'best ever' sounding Class 47 models, together with as much user-configurability as possible. In both these regards we believed our aim has been achieved, thanks, in no small part, to ZIMO's cutting-edge technology and the skill of Paul Chetter, who is widely regarded as the UK authority on ZIMO sound programming. The result is an exclusive sound project that should satisfy the wishes of even the most demanding 'Brush 4' fanatic.

Sound packs to suit all scales and gauges

After initial availability only in our special edition ViTrains models, we can now offer these sounds on a range of ZIMO decoders to suit all models and scales. These Austrian-made ZIMO decoders are widely acknowledged for their quality and functionality and bring with them a number of innovative features. We've made selection simpler by offering the correct chip for fitting into any type of Class 47 model, irrespective of scale or manufacturer.

Realistic driving and numerous user options

Several driving styles are possible including direct 'throttle' response and a more challenging 'manual notching' mode. The incredible ZIMO 'action button' coasting and new 'step down' features run the risk of changing your perception of DCC sound forever! As well as switchable no-heat and ETH engine speeds, there are also 'Mainline', 'Yard' and 'Short layout' options to match the size of your set-up. This means that users with even the smallest layouts will still be able to hear their locos at 'full chat'. As well as that unforgettable rising and falling 12-cylinder, four-stroke exhaust beat, expert recording and editing has honed that distinctive high speed 'flutter' and signature warning horn note! Powerful and rich audio output is not the only ZIMO benefit - our 'OO' & 'O' gauge sound decoders include 'electronic flywheel' circuitry which - when linked to the included energy storage capacitor - improve slow-speed running reliability and remove lighting flicker, as well as maintaining sound continuity over dirty track.

Class 47 sound pack highlights

  • Up to 20 popular sound functions provided
  • Independently playable two-tone warning horns
  • Flange squeal, detonators & station announcements
  • Prototypical pre and post-engine start checks
  • Standard and ETH-equipped engine idling speeds
  • Incredibly realistic new coasting feature
  • Three layout size based operating modes
  • Electronic flywheel circuit (not available in N gauge)
  • Free power-matched speaker (not available in O gauge)
  • Easy to understand comprehensive instructions.

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Current products

Retro-fit sound kit for ViTrains 'OO' gauge models (ZIMO47-VT)
Comprises a ZIMO MX645R (1.2A, 3W) 8-pin NEM652 pre-loaded sound decoder, wired 2200μf capacitor and 28x40mm matched loudspeaker in bespoke laser cut mounting frame. The 8-pin chip can also be used in the older Heljan product or with the connector plug removed, hardwired into any 4mm scale model. £99.00

Sound pack for Bachmann 'OO' gauge (ZIMO47-BM)
Comprises a ZIMO MX644D (1.2A, 3W) MTC 21-pin pre-loaded sound decoder, 220μf capacitor, speaker wire and 20x40mm matched loudspeaker. Compatible with Bachmann models, this requires installation work including wiring the speaker and capacitor (if required) to the PCB and securing the speaker. £99.00

Sound pack for Graham Farish 'N' gauge (ZIMO47-GF)
Comprises ZIMO MX648F (0.8A, 1W) pre-loaded sound decoder, and 8x12mm miniature 'sugar cube' loudspeaker. This is the most effective solution for this scale but involves significant installation work. £99.00

Sound decoder for 'O' gauge and above (ZIMO47-KS)
A ZIMO MX695KS high power (6A, 10W) pre-loaded sound decoder and large 4700μf capacitor. This highly specified chip is fitted with screw terminals and has a wide variety of function outputs suitable for lighting and a smoke generator. It is suitable for large models such as 7mm scale double-motored Heljan, DJH kits etc. Significant installation work is required. Matched speakers are available from us separately. £179.00

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