The phrase "a string of speakers" is correct and usable in written English.
It can be used to describe a series of speakers, often in the context of an event, conference, or presentation where multiple individuals are scheduled to speak.
Example: "The conference featured a string of speakers who shared their insights on the latest industry trends."
Alternatives: "a series of speakers" or "a lineup of speakers".
Ravens Coach Brian Billick has had a string of speakers visit his team this season.
At the party, from the flatbed of a tractor-trailer, a string of speakers preached resistance to a crowd that came bearing the standard liberty accessories: Gadsden flags, holstered sidearms, signs reading "DON'T TAX ME BRO".
By evening, the messiness of the afternoon had been put aside in favor of a string of speakers who came with the same mission to excoriate Clinton and to argue that Trump could do as the night's theme proclaimed: make America safe again.
While there is plenty of dissension among the conference's 330 delegates about how and when such a transitional government should be formed, a string of speakers from across the opposition's political spectrum expressed unanimity in their demand that the United States leave Iraq's political future to Iraqis.
Michelle Obama's keynote address was indeed the keynote and will ensure that everyone is talking about that tomorrow, and not the series of at times vicious attacks on Mitt Romney by a string of speakers who highlighted again and again his wealth and taxes.
Earlier, House minority leader Nancy Pelosi was just one of a string of speakers who highlighted social causes including women's issues, and economic concerns such as the future of the auto industry.
A string of noted speakers from the criminal justice system offered words of warm encouragement and cold reality.
The chairman of the Democratic National Convention, Mayor Antonio Villaraigosa of Los Angeles, took a shot at the Republicans for lining up a string of minority speakers on the opening night of their convention.
Before his speech, a string of Ukip speakers delighted the conference hall with a range of policies designed to appeal to its core vote, with a focus on cutting taxes, tougher immigration controls and stronger British values.
He eventually delivered, but only after delays and at the very end of a string of military speakers who sang his praises.
As it happened, GEORGETTE MOSBACHER, the author and businesswoman, was the last in a long string of speakers in the grand ballroom of the Plaza Hotel.
