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AndrewPhillips:<>My concern with the 80hz is the -6db drop to get there. Will it produce enough sound at 80hz or am I going to need to set the crossover higher and push the sub over 80hz?
You can still hear frequencies at -6 dB pretty well, we have the Verus Surrounds crossed over at 80 Hz here and I don't hear any drop off in the bass from them.
However if you do get them I would recommend trying cross over points of both 80 and 100 Hz and see which sounds best to you.
Jason Hicks
Aperion Audio Guru