"Official" Audyssey thread (FAQ in post #1) - Page 1986

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Originally Posted by jlpowell84 

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So that means you can set the crossover anywhere (40Hz and up) as the speaker is producing bass across all available crossover points, and it will depend on other factors (room acoustics, subwoofer quality, etc) and the Audyssey "recommendation" is irrelevant.

So what if audyssey sets/recommends 40hz for my towers, can I set them to large or full band is what my receiver says. New Marantz coming today so not sure if it will be different. Thanks.

Pretty much everything said in the last several posts is in this FAQ answer:

c)3.   I have big tower speakers at the front. Shouldn't I set these to Large'?

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Originally Posted by jlpowell84 

Ok, Marantz 5007 home and hooked up. Ran Multi EQ XT for the first time. Measurements are: front left -5.5db, front right -6.0db, center -5.5db, subwoofer -12db, surround left -9.0db, surround right -6.0db, front height left -3.5db, and front height right -5.5db. Front-full band, center 40hz, surround 150hz, front height 80hz,

The low trim values for the satellite speakers indicate you have reasonably efficient speakers, and look fine.

Of course, you should change the fronts from full-band (i.e. large) to small in order to invoke proper bass management.  The second recommendation would be to up the crossover values to 80Hz for left, right, and center, and leave the other crossovers where they are.

However, the -12dB trim for the sub is an issue.  It indicates that the gain on the sub amp is set too high.  You must dial down the gain and re-run the Audyssey calibration until the sub trim is no longer "pegged" at -12dB.  A more comfortable range for the sub would be -5dB to +5dB.

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Originally Posted by jlpowell84 


Ok, I discovered how to change things. All speakers are now set to small and crossovers at 80hz. I will rerun audyssey tomm and lower the gain on the sub. If I can get it in that range then I can just turn up the db's on the receiver. It just seems like it's too little.

Keep in mind that when you lower the sub amp gain, Audyssey will raise the trim, and the result is a wash.  Regardless of what you set the sub gain at, Audyssey will attempt to set the trim so that the sub's level is at 75dB, equal to the other speakers in your system.  The only time you run into trouble is when the sub gain is either too high or too low such that Audyssy "runs out of room" to adjust the trim to 75dB.

Also, if you prefer to run the subs hotter than 75dB, there is nothing wrong with raising the trim level in the AVR--just don't touch the sub's gain after the calibration has completed.

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Originally Posted by fjames 

 

Maybe we're (consumer Audyssey users) lucky they don't? Pro seems to like to recommend unusually high x-over points - which supports the idea of Audyssey knows what Audyssey knows, and nothing else. No matter what the hypothetically perfect crossover point would be for dealing with the area under the curve, localizing the bass would negate it for me. Might not be fair to compare consumer and pro though ...

I'd like to see your evidence for that. When I run Pro I get recommended XOs from 40Hz up to 120Hz. Every time. The advantage with Pro is that when you select a XO from the list the filters are created after your selection.

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Originally Posted by fjames 

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Originally Posted by SoundofMind 

^I don't think it is at all accurate to say "Pro seems to like to recommend unusually high x-over points." IIRC most of us on the Pro thread have to take second or third choice of crossovers to select 80. But of course it depends on your speakers, your room and placement.

A fair observation, but what i was getting at was if Audyssey had control over the consumer x-over, and pro gives you choices, it's a reasonable speculation that there would be no choice on the consumer end? So some would get stuck with triple digit x-over points, since Audyssey doesn't seem to consider variables outside its specific function.
 

You wouldn't be 'stuck' with the XO choice Audyssey makes. You can change it in an upwards direction with no negative effect on the calibration. I can't see how it is any different from the way it is done done now in this regard, with the AVR maker selecting the XO. You may as well say you are 'stuck' with that.

Your assertion that the XOs would be "triple digit" is just an assumption on your part unless you can provide some evidence to back it up.

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Originally Posted by Theresa 

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Originally Posted by kbarnes701 

You wouldn't be 'stuck' with the XO choice Audyssey makes. You can change it in an upwards direction with no negative effect on the calibration. I can't see how it is any different from the way it is done done now in this regard, with the AVR maker selecting the XO. You may as well say you are 'stuck' with that.

Your assertion that the XOs would be "triple digit" is just an assumption on your part unless you can provide some evidence to back it up.

In my case I was "stuck" with a "triple digit" crossover until I manipulated the speaker response with a miniDSP.

True, but your case is very unusual and there are factors at work, I believe, which we do not yet fully understand.

It's just not true that Pro first recommends triple digit XO figues as a matter of course - well not in my experience and that of others on the Pro thread. I am happy to be proven wrong but I'd need to see some objective evidence rather than just take someone's word for it. Heck, even with plain XT32 most (not all) people seem to get suggested XOs that are lower than they would expect - probably because of room reinforcement of their main speakers (many/most people have them close to boundary walls because they either don't have the space to move them further into the room or because WAF precludes it). 

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Originally Posted by **OptimusPrime** 

It seems that generally, most people have set their front mains to 80hz if Audyssey comes in below that. I understand why. But what about the surrounds and rear surrounds? Do most people just leave the crossovers that are set by Audyssey for those speakers? Should it be 80hz all around? My room is pretty narrow in front, and opens up in back. I am using in-wall speakers and a traditional 12" down-firing powered sub. Audyssey always tends to set my f/l mains at 60, center at 40, surrounds at 110, and rear surrounds at 120. Setting my mains to 80 makes a big difference. Just wondering what others have done for the surrounds.

I leave mine at the Audyssey suggested 110Hz. I raise my mains to 100Hz though - but that is because I have extraordinarily capable subs (dual Submersives) and Mark Seaton recommended that I try 100Hz (I always used 80Hz before - my mains are THX certified). For anyone who doesn’t doubt the ability of their sub(s) it always seems sensible to me to let them do the heavy lifting at the bottom end - as they were designed to do.