They are 8 ohms each so can be wired in parallel for the Loksound 4, 5 and Zimo decoders. They fit most models where you can fit a standard 20x40 speaker.
2x Mini Megabass Speakers, For Bachman Class 47 or 57 DCC Sound, Loksound Etc
Pair Of Megabass Speakers To Upgrade A DCC Sound Bachmann Class 37, Loksound Etc
Pair Of Megabass Speakers To Upgrade A DCC Sound Bachmann Class 47 57, Loksound
Pair Of Megabass Speakers To Upgrade A DCC Sound Dapol Western, 52, 68, 73 Etc
Pair Of Megabass Speakers To Upgrade The Hornby HST, Class 43, TTS, MTU, Valenta
Pair Megabass Speakers To Upgrade The Hornby HST, Class 43, TTS, Ideal For R7140