Simplified REW Setup and Use (USB Mic & HDMI Connection) Including Measurement Techniques and How To Interpret Graphs - Page 478 - AVS | Home Theater Discussions And Reviews
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Originally Posted by AustinJerry View Post
I don't adjust the crossover, which for me has remained fixed at 80Hz for quite some time. There is a transition from sub to main speaker that occurs over a range around the crossover point, and I am looking for a smoothness in that area. There is an excellent write-up on the sub distance tweaking procedure--if you haven't read it, you probably should.

The Dirac calibration does not need to be re-run. Remember, Dirac knows nothing about crossover values in the AVR. Tweaking the AVR sub distance setting is simply adding to the delay already established by Dirac, which is exactly what the intention is.
Interesting you say that. I was just now reading Paul Spencer's EXCELLENT article on Bass Integration here http://www.hifizine.com/2012/06/bass...-guide-part-3/ . He talks about how in some cases you can leverage the lower bass response in the mains to help smooth out nulls in the lower end (down to a certain hz of course).

On that page he talks about a "high pass filter" and states:
Quote:
In home theatre systems it is typical for mains to have a high pass at 80 Hz when the speakers are set to “small.” This gives the system greater output and headroom, however, in following this guide one may choose to run the mains lower. As a result, including a high pass filter on the mains is even more important than usual and one might choose a steeper slope to compensate for the added low frequency demands.
I'd like to see if I understand this correctly... When he talks about the high pass filter, he is talking about setting the cross over point in the AVR or preprocessor right? So for example he is suggesting that if someone has say a null at 70hz in the sub but not in the mains, using a cross over lower than 80hz may help with that null, yes?

This brings up a related question - on an AVR or a preprocessor like the Marantz 8802, when you set the L/C/R speakers to SMALL, does it then not take into account the crossover point and instead cross it at 80hz, or perhaps even higher? In which case if you want to use Paul's suggested trick you'd have to set the L/C/R to Large then? In my case I am planning Triad Gold Monitors or LCRs. I think these are rated to 40 hz but are bookshelf-like speakers as opposed to towers. In that case would these speakers typically be set to large or small?
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