Graham Farish Class 37 Diesel DCC Sound (using Zimo decoder)
Example 1: Zimo MX648, modified SugarCube, grinding, total rewire
This guide only has a couple of photos showing the Zimo MX648 and SugarCube speaker installed in a Farish N gauge Class 37
diesel. All other instructions are the same as for the longer guide using
a CT sound decoder here.
Example 2: Zimo MX648, Minnow5, less grinding
Here is another example, with a simpler installation, factory circuit board still needs removing with lights rewired, but
placing a smaller speaker in the fuel tank (less grinding). The result is OK with the small speaker, but it is a bit of a
compromise compared to the SugarCube/Curve approach.
Example 3: Zimo MX648, SugarCurve7, Cab lights and SACC16 stay-alive
This next approach improves on some previous ideas, and without doubt gives the most effective end result, but with the extra
work required to achieve it. We grind the chassis to make space for the SugarCurve7 speaker, hard-wire a Zimo MX648 sound
decoder, recovering with Kapton tape. The factory lighting is rewired, via a little resistor PCB which was cut out of the
original factory PCB and extra resistors added. Cab lights and drivers are added in the same fashion as previous examples, but
the real difference with this example is the inclusion of the tiny SACC16 stay-alive connection kit, with a single 330uF/16V
Tantalum capacitor attached.
Please note that these guides are provided as useful resources for you, as-is. YouChoos cannot be held responsible for
errors in the information, or for any damage caused to your models or equipment if you choose to follow any of the
steps detailed here.