I thought I would pass on a good find on DCC speakers on eBay. They are very good full range 1” 4Ω 1 Watt speakers, two speakers for $4.49 plus $2.00 S&H.
They are too big for diesel installs but fit easily in a large steam tender. I installed the pair in series for 8Ω in an HO Rivarossi Cab Forward oil tender and they sound great. The decoder is a MRC 1731.
I built a 3.185” L x 1.22” W x 7.55” H enclosure from .062” thick sheet Styrene.
The speaker magnets are so powerful that you need to cover the speaker openings to prevent picking up small metal particles between the rails. I went with a small piece of fiberglass window screen for strength and covered that with a piece of a woman’s nylon stocking. There is no impact on the sound quality.
Mel
Modeling the early to mid 1950s SP in HO scale since 1951