"bass voice" is correct and usable in written English.
You can use it when referring to a person's deep, low-pitched voice. For example: "The singer had a smooth bass voice that filled the entire auditorium."
Mark Risinger's sturdy bass voice was ideal for Consalvo.
A Professor Harold Hill-style rap for the bass voice.
He has a rich bass voice that ripples with humor.
One word, apart from deep, to describe the bass voice?
The Brazilian Szot is superb, with a resounding creamy bass voice and a warm masculine presence.
Peter Kooij's bass voice sounded muffled and indistinct, especially during the aria "Quoniam tu solus sanctus".
Matti Salminen is a bit crotchety as Pogner, but his bass voice is a marvel.
Ain Anger brought his deep-set bass voice to the role of Ivan.
Andrew Gangestad brought his sturdy bass voice to the role of Brander.
Brazilian Paulo Szot was superb, with a resounding, creamy bass voice and a warm masculine presence.
Also notable was Valeriano Lanchas, who has a wonderful, clear bass voice.
