help system altec

[nlk]

hello
I shall want to know if 421 8 h series 2 suit for an application in bass for the PA system of 80hz has 250hz in one 816A?

thank you for your help

sorry for my english

[macaroonie]

[nlk]

I ask the question because I would like to add altec m17 in 12 " to cover the band 250hz 1.5khz.
I thought of replacing my 2 altec 421 8 hour series 2 by 4 b*c 15pl100.
Of what think you?