Dual Sound Decoder

[emd16645]

I have a pair of SW1500s that I've been messing with, one powered with a Cary shell (got a build thread on here about it), and the other is a BB dummy. When I finish these, I plan on running them as a pair, so I was thinking I would put a sound chip in the dummy and cram as much weight in the powered unit for pulling power. This leads to the question of representing two engines with one sound chip.

I know it would sound fine, but I don't like the idea of two prime movers being perfectly in sync all the time. I've seen where there are dual prime mover decoders for E units, but as far as I know those are all for EMD 567 diesels, which would be incorrect for SW1500s (645 blocks). Have anyone on the DD experimented or used something similar? I wouldn't be opposed to using a pair of speakers, but two separate chips would not be worth it.

[tpwillie]

I would suggest that you look in to the QSI Titan. It has dual prime mover 645 sounds so your engines would not be in perfect sync. It would probably have all the light outputs you would need for both units.

store.sbs4dcc.com/QSISolutionsTitan-UUniversalNMRA8PinDCCSoundDecoder.aspx  Ask for the EMD 645 Emulator sound file. You can tune the sounds to do what you are looking for. Put engine 1 sounds on one speaker and engine 2 sounds on the other speaker. You could also put a horn on each speaker

Good Luck.

Lou

[emd16645]

Lou, thanks for the info.