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#242566 - 01/24/09 10:45 PM Re: Another Audyessy question [Re: SirQuack]
Joe_in_SC Offline
devotee

Registered: 02/16/04
Posts: 307
Loc: Charleston, SC
I'll have to try it again tomorrow and compare the results. Any theories on why I'm getting the weird sub distance readings? I've done the sub crawl and the present position is the best of all possible options.
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#242576 - 01/24/09 11:50 PM Re: Another Audyessy question [Re: SirQuack]
dewd Offline
local

Registered: 05/05/08
Posts: 200
Loc: Mechanicsburg, PA, USA
 Originally Posted By: sirquack
Hey Dave, none of your Home Theater website pictures are working, fyi....


Thanks. I am redoing my site and got really started deleting without thinking. They are working again.
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Audyssey Setup Guide

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#242578 - 01/24/09 11:56 PM Re: Another Audyessy question [Re: Joe_in_SC]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10360
Joe, as to difference in the level readings, as I've commented before, there's no good reason to believe that the SPL reading taken with a separate meter(and with human error in reading it possibly a factor)is more accurate(or as accurate)than the result from the Audyssey microphone and built-in meter.

Where the sub difference is shown as being significantly shorter than the actual distance, this would seem to indicate that a nearby reflection is affecting the result. If you had the microphone positioned clear of obstructions for the first central reading, maybe you should try another first reading from about 6-7' away from the sub even if not in the listening position , to see if a similar short measurement results.
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#242627 - 01/25/09 11:20 AM Re: Another Audyessy question [Re: dewd]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13318
Loc: Iowa
pictures are working again Dave, but it is VERY slowwwwww. Are you hosting your own website? I've got broadband and this is reminding me of the old dial-up days....
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#242628 - 01/25/09 11:32 AM Re: Another Audyessy question [Re: JohnK]
Joe_in_SC Offline
devotee

Registered: 02/16/04
Posts: 307
Loc: Charleston, SC
That's a good idea John. If I take just a first reading to verify the setup, will that give me the sub distance? Or will I have to go through the whole multi-position routine? My receiver needs a minimum of 3 readings before it will do the calculations.

I was trying to analyze this situation (the way we engineers tend to do), and it's probably not such a big deal as I'm making it out to be. After all, the distance setting is used to calculate a delay time in microseconds. It seems unlikely that a difference of a couple of thousandths of a seconds would even be noticeable, especially with a long low frequency wave.
_________________________
I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins

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#242631 - 01/25/09 11:41 AM Re: Another Audyessy question [Re: Joe_in_SC]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13318
Loc: Iowa
If your a member on the AVSforum, there is an Audyssey thread in the Audio Receivers/Amps section. Chris from Audyssey is a regular and maybe he could help answer these questions...
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M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#242734 - 01/25/09 10:18 PM Re: Another Audyessy question [Re: Joe_in_SC]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10360
Joe, the first Audyssey reading(usually from the main listening position)is the one that sets the speaker levels, crossovers and distances; the remaining readings are for the purpose of room equalization adjustments. So, if you decide to try the first reading at different positions to check what the sub distance shows, use the least number of readings that give you a result for sub distance.
_________________________
-----------------------------------

Enjoy the music, not the equipment.



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#242798 - 01/26/09 09:37 AM Re: Another Audyessy question [Re: Joe_in_SC]
alan Online   content
connoisseur

Registered: 01/29/02
Posts: 3186
Loc: Toronto/New York/Dwight
Hello Joe,

While we'd all like to believe that Audyssey's automatic calibration and EQ is an audio panacea, it isn't, and it's error prone. I suggest you use your Radio Shack Sound Pressure Meter and adjust the levels and distances manually. You can tweak the levels of your surround speakers, subwoofer and center channel by ear if necessary later on.

Leave Audyssey Equalization switched off. As you've discovered, with really linear speakers like Axioms, Audyssey may degrade sound quality.

Incidentally, it is pink noise (not white noise) that is used. Pink noise has equal energy per musical octave; white noise has equal energy per frequency, so it's heavily biased towards the upper midrange and high frequencies.

Regards,

Alan
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Axiom Resident Expert

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#242834 - 01/26/09 12:27 PM Re: Another Audyessy question [Re: alan]
BoB/335 Offline
aficionado

Registered: 12/26/08
Posts: 505
Is this a good product with the meter bundle?

http://www.svsound.com/products-parts-avia.cfm


Edited by BoB/335 (01/26/09 12:30 PM)

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#242836 - 01/26/09 12:30 PM Re: Another Audyessy question [Re: BoB/335]
RickF Offline
axiomite

Registered: 02/26/05
Posts: 5210
Loc: Vero Beach, Florida
Bob, several of us here do use the Avia disc ... it's worth having.
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Rick
Our Room

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