Axiom Home Page Forums General Discussion Technical Questions sub, global or independent?

The crossover is a cutoff point. Everything under the chosen crossover will be sent to the subwoofer, instead of to the specified channel. You would want to use this so that you don't "lose" chunks of sound, and to get the most out of your subwoofer.

For example (assuming you can set independent crossovers for different channels):
If you have qs8, they are rated from 95-22K. If you set your crossover for your surrounds to be 80Hz, all the sound above 80Hz will go to the qs8s, and below will go to the subwoofer. This leaves a band of sound from 80-95 Hz that might be "lost" (depending on how steeply the qs8s drop off below 95Hz). For this reason you might want to set your crossover for your surrounds to be 100Hz.

That said, a lot of people just set the crossover at 80Hz for all channels and leave it there.

Happy to try and confuse again!

A crossover is, very basically put, a separater of frequencies. It (very loosely speaking) cuts off frequencies below or above a certain point, say 80 Hz.

In this case, the crossover cuts off (rolls off) everything above 80 Hz for the speakers, and everything below 80 Hz goes to the sub. This is IF you set your speakers to small. If they are set to large, and you set an 80 Hz crossover, 80 Hz and below will go to the sub, but everything will go to the speakers.

The Harman/Kardon models have what they call a triple or quadruple crossover, where you can set different crossover points for the various speakers (front, center, surrounds, rears if you're lucky). An example of this for movies would be an 80 Hz crossover for M22s, a 90 Hz crossover for the VP100, and an 100 Hz crossover for the QS4s, with all speakers set to small. So the sub gets everything below 80 Hz for the fronts, everything below 90 for the center, and everything below 100 Hz for the surrounds.

If you go into the OSD (on screen display) and choose speaker setup, you can change these settings, first setting the speakers to large or small, and bass management (marked as sub) to global or independant. The you can flip over to the crossover screen to set the crossovers.

Ken

Okay, I think I'm beginning to see the light.
I just got M22s , QS8s,(not hooked up yet) and a VP100 last Sat. Already had a Velodyne CHT 10.
My listening space is about 18x16. Primary listening habits are 90% music of all kinds and 10% HT. This percentiage will change I'm sure once I get everything hooked up and understood.
I'm going into the attic now to run speaker wire and will get back to you guys with more ignorant questions I'm sure.
Thanks
Bray

$&^%&*G fiber glass!!!!!!!!!!!!!!!!!!!!!!!!!!!!

i feel your pain.. i was sweating like a whore in sunday school when i got in the attic to do my wires. after climbing out over the beams, and getting face first a few times in the fiberglass, i thought i was about to pass out.. once all the wire got strung, and i climbed down, i was soooo wet from sweat, that i looked like i had taken a bath.. then, all the insulation was sticking to me, so i looked like i had big pods of cotton stuck on me from head to toe.

i would strip down to your underwear and use the waterhose outside to rinse it all off, then go take a good shower.. i ended up tracking that crap all over my house.

bigjohn

to late about tracking it all over the house%##$%^&%^!!!!!!!!!!!!!!!!!
Oh, and did I mention ^%$^&^&&G vaulted ceilings!!!!!!!!!!!!!!!!!
Right wire is run though, but still have the left to go.

Wow John, your post evoked alot of visuals. Most of them were pretty scary.

me, hosing myself down in my underwear is VERY scary.. just ask my wife

bigjohn