Kit: MX696KS; 2x Zimo Dumbo 50X15X14-2W speakers
We love hydraulics, and this big Heljan 7mm model is a beaut!
The usual approach is taken to fitting sound - remove the factory PCB to make space for the MX696KS large-scale decoder and
screw-terminal adapter board. All wiring remains the same, except we have to add resistors to protect the lighting, as the
removed PCB had the original resistors.
We remove all of the plugs and sockets too, as the wires will simply be screwed direct to the decoder's screw terminals.
A pair of dual Dumbo speakers are connected in series. The dual speakers in themselves are 2W at 4 ohm, so connecting in series
gives 4W at 8 ohm.
Some work to do on the lighting, adding resistors, and ensuring they get connected up to the right terminals on the decoder!
Kit: MX699KS; YLR603010
Perhaps a slightly easier install - the MX699KS is a bigger shape to fit in the centre of the Hymek (at least the newer
version), and a YLR603010 speaker simply slots underneath the decoder (not in the fuel tank).
Just checking the sizes and positions for the speaker and decoder here...
YLR60301 speaker goes face down under the decoder platform
MX699KS measured up in place, then wired in