crossover settings for m50 speakers?

carmos

hi all , heres my sett up.polk m50 front and surrounds m30 backsurrounds and cs1 center psw-10 sub.denon 987 avr and denon 757 dvd...my question is do you folks think i should run my fronts and surrounds in full range mode or cross them over through the denon avr ? where do you think i should crossover the sub at 60 -70 or 80 hrtz..would anything bad happen to them if i ran them full range..would i be missing anything crossing them over at say 60 or 70 hrtz...thanks for any help:)

RuSsMaN

Start at 60, play with it from there. Just keep the low LFE out of them.

Third post, but welcome to the boards, and thanks for choosing Polk Audio!

Cheers,
Russ

carmos

russ quick question ?on the specs for my speakers they list some ratings at -3 db e.g 57htz at -3 db...what does that mean..thanks again

RuSsMaN

It means, 3db down at 57Hz. The beginning of the end for the low end response, if that makes sense.

A lot of people go as far as 6 or 10db down for useable response, the 3db rating is 'right there', and for the most part could be considered flat response. You'll get 57 cycles out of them. Being a ported design, I wouldn't expect much other than a waterfall after that. You get a much smoother roll off with (properly designed) acoustic suspension (sealed) boxes - but that's an entirely new topic.

Cheers,
Russ

carmos

ok thanks russ,so i guess 60 hrtz for front and surronds and 80 hrtz for center and back surronds and set the sub to 80 or 85 hrtz.thanks again