Bass Management Basics – Settings Made Simple

[cjsxv2]

Figured this would be the best place to post my questions.
I have 7.1 system consisting of: Yamaha 3800, Fronts/Rears/Surrounds - Paradigm 100s v2 (All 6 speakers are 100s), Center - Paradigm CC-690 v4, Sub - Def Tech Trinity.

I am having problems setting up the crossover points. I simply allowed the receivers auto setp to calibrate everything in the past but lately Ive been jacking around with it and Im curious what everyones opinion is. All the speakers are set to lrge.... I run LFE to the sub and have it crossed over on the receiver at 60hz. Ive messed with the receiver settings some, and I believe Ive set each channel's crossover to 60hz, matching the sub crossover on the receiver.
So my questions are: a)should I set my speakers to small, b) what should I set the crossover on the receiver to and what should the crossover on the sub itself be set to or does it matter as Im running LFE and c) Does setting the speakers to 60hz on the Yamaha 3800 actually mean Im setting the speakers crossover at 60hz?

[AVRat]

a) Set all to small
b) Set receiver to 80 Hz, sub x-over doesn't matter using LFE input since it's bypassed.
c) Yes, if speakers are set to small. The x-over point only affects the speakers set to small. If set to large, the speakers receive the full frequency spectrum.

[cjsxv2]

Since I currently have the speakers set to lrg, that means theyre running full range. So then where does the lower frequency bass go to that the speakers cant handle. For the 100s I believe they go down to 38hz..... so does that mean anything below that the sub gets, or anything below that just doesnt get heard? How does the receiver determine what to send to the sub and only the sub, if the speakers are set to full range(large)

[AVRat]

If the speakers can't produce the frequency at a hearable level you won't hear it. With all speakers set to large, the only signal the sub produces is the discrete LFE siignal.

[JAMS]

I was advised to set all small and 80hz,whew what a difference,it came alive,i did have too adjust the sub x/over too 75hz because it was over lapping the front spkrs bass right at 80hz too exsenuated ,now the bass sub comes in evenly as the fronts fade out,a smooth transition is happening now!
Ive heard wierd stuff happens on x/over when used on subs and receivers,but it was perfect on mine!!! Usual setup is the receiver does the x/over with subs x/over set to max about 150hz!
GOOD LUCK, JAMS

[nate88818]

My setup:

Mirage:
Mains - OM-8 28Hz-22kHz
Center - OM-C2 38Hz-22kHz
Surrounds - OM-R2 80Hz-kHz
sub - OM-200

Denon 4806ci

As of now I have all set to small THX 80hz crossover, my question is about the OM-8's
They have powered subs in them, should I be setting these to large?

Thanks

[maclick]

Great read, my Tannoy's have a Frequency response of - 6dB, so should I put my crossover setting at 120hz?