Speaker is as specified. For those having trouble wiring it up. Polarity does not matter if you are only using one speaker. Wire it to the speaker pads on your decoder. Be careful about touching all the metal bits. Solder the wires to the speaker tabs and see it lighten up your day. Used these in my kato’s. Worked on AC4400, SD70 and ALC-42

The ESU LokSound installation has challenged me to the point where I have not touched it in over a week, so I can't comment on the speaker's performance. Some basic ideas on installing the speaker would be a great help. I've built electronics all my life, not enjoying this ordeal at all.