The phrase "a speaker on a" is correct and usable in written English.
It can be used when referring to someone who is giving a talk or presentation on a specific topic or subject.
Example: "She was invited as a speaker on a panel discussing climate change."
Alternatives: "a presenter on a" or "a lecturer on a".
NEW YORK Because of an editing error, a report in the Metropolitan Diary on Monday in which a reader recalled the era of soapboxes misidentified a speaker on a soapbox in Union Square in 1904.
It's still just a speaker on a phone, but it's loud and crisp.
It doesn't feature any of the bells and whistles that its more expensive brethren offers, but, for many users, that may not be an issue (do you really need a speaker on a smartwatch, after all).
As director of the Peace and Justice Resource Center, Hayden is constantly in demand as a speaker on a variety of issues.
A speaker on a lorry converted into a stage called out boldly: "What do we want?" Confused shouts of "Second vote", "A people's vote" and, "No Brexit!" rained back down on her.
If someone invites a speaker on the list, that is a decision for them".
Her father, a Vietnam veteran, is a speaker on homelessness, post-traumatic stress disorder and other veterans' issues.
Soon, Sylvia's voice could be heard over a speaker on the boat, saying in a businesslike way, "Topside, this is Deep Rover.
Designed by Philippe Starck, the French product designer and architect, the tower produces balanced stereo sound through an acoustic configuration that puts a speaker on each side, a third in the front and a woofer in the base.
Then, with a cat-that-swallowed-the-canary smile, the server puts a small MP3 player with a speaker on the table.
But she still has a public life, scheduling about 15 engagements a year as a speaker on the subjects of good service and product quality.
