Will an AF Air Chime Whistle (ACW) Generator damage a Track Power Controller 400 (TPC400)? I have three loops of S-gauge track. Each loop has a 30B and TPC400. The three loops share a common Base. Unfortunately, the AC signal from a TPC eventually burns out speakers in AF engines that have ACW or Diesel Horn (DH) - there's a louder constant hum than with the AC from a Gilbert transformer. Therefore I have to first disconnect the ACW/DH inside such an engine before using it on my layout. I would like to run and test ACW equipped engines on one loop. If I put in a SPDT switch on one loop so I can toggle between TPC400 power or a 30B configured an ACW Generator and keep the common base untouched will activating the ACW signal (600Hz) on that loop harm the TPC's on the other two loops while they are in operation? My concern is that when activated the ACW signal will convey through to a TPC400 in use on another loop via the common Base connection between all three loops and damage their internal electronics. Thanks for your input, insights, and advice on this.
PS For a diagram of my layout see February 2017 issue of CTT. It is the innermost loop of the three to which I want to add this TPC400 or 30B with ACW option -- no blocks, sidings, etc. just a clean continuous loop of track with feeders to it about every 3-4' using star or multi-point distribution.
