All the reviews I've seen/ read are all on using steam power, any expierance with diesel's?
(GP40,SD40's and the like)
Well not so modern but I run an SD7 and it sounds great.
Gary
Is the amplified sound only the engine sounds or does the horn and whistle sound get amplified also?
Low frequencies are what get amplified. The part of the train you often feel as much as hear when standing by the tracks. A tiny little speaker in the loco can't do that, thus the under layout big subwoofer. Low frequency sounds are not directional, so they can come from anywhere, the higher frequencies that the loco speaker can reproduce still come from the loco so your ear is directed to the actual loco and not some spot under the layout.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
What Randy said. Also I tweeked both the steam and diesel signals so that the Rolling Thunder sound only comes on as the loco approaches a location closest to where you can stand and then fades out as the loco moves away.