Please, up today, what sound decoder and speaker are suitable to fit in a HO Kato SD90/43MAC, early production? (no hole in the tank…), thanks.
why not just make the hole in the tank yourself ? or if you don’t have the equipment get it done by someone that does.
Soundtraxx Tsunami KT-1000 EMD 710 with a 16x35mm speaker/baffle in the long hood (requires cutting down of rear light pipe and re-location of the rear LED).
David B
Here’s one I did with a Digitrax DH165K0 and a Soundbug chip. On this one I cut away some weight and added a 16x35mm speaker and enclosure.


I’ve also used a QSI U decoder and not replaced the Kato circuit board.
David, why not the AT-1000 or the GN-1000?