Axiom Home Page Forums General Discussion Home Theater Help me choose an AVR

Jordan, the crossover settings should probably be those which the Audyssey calibration step in your 5009 will set. This takes into account variations in bass extension caused by your particular room setup, rather than just relying on the general specs.

As far as dialogue goes though, there's very little except the deepest bass voice which extends below 95Hz.

Common wisdom says that it should be set no lower than what Audyssey 'hears' it.

My Denon AVR 'hears' both my M22s & VP160 at 40 Hz & I set them at 60 Hz.

TAM

I have the same experience s Exlabdriver, Audessey with my Tascam it hears My M22,Vp160,M3's All at 40 to 45Hz. But THX recommends 80Hz, so I just go 80.

I wonder with all the digital codec's out there.. for exmple, Dobly Digital 5.1. They have an actual LFE channel that is mixed into the actual sound track. That channel is dedicated to the SUB if you have one inside your system.

You then have your other 5 channels (or more for Bluray) that contains the sound that was originally mixed for those channel speakers. Now if the mix for the movie at hand has sounds going down below that crossover point for those 5 channels, then that sound is then forced to go to the sub.

But your speakers can very efficiently produce those sounds easily down to the 50hz, and most likely 45hz inside the +/- 3db zone that the rest of the upper frequencies are working to.

If the speakers can very efficiently produce those sounds why would you not? The only reason that I can think of is that your receiver (amp) is underpowered and the lower frequencies use more current that your unit might be staved for at the volume you are trying to get.

But on the flip side... I have an Energy sub, and they post that it goes down to 39Hz. But if you dig more, I think it's 39 @ - 9db, that is no better than what I am getting off my Axiom speakers anyways. So in truth, the sub is doing little more than my speakers are.

But the LFE channel will always go to the Sub and not to the front speakers, so setting the cross over higher is rather moot anyways.

There is a theory that crossing the speakers higher benefits the overall room response, as you can place the sub where bass frequencies behave as desired. Not as flexible with the other channels I guess.