How to pronounce“sparkless”in English

“From the contagion of the world's slow stain 5 He is secure; and now can never mourn A heart grown cold, a head grown grey in vain-- Nor, when the spirit's self has ceased to burn, With sparkless ashes load an unlamented urn. 41.”

“Live, though, this youthful Minnesota-based band performed a somewhat sparkless set that seemed to bury the conceptual strengths, the stark voicings, and the crisp rhythms that on the album helped shape the arrangements and link the horns.”