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#242499 - 01/24/09 04:55 PM Another Audyessy question
Joe_in_SC Online   content
devotee

Registered: 02/16/04
Posts: 307
Loc: Charleston, SC
I decided to give Audyssey another try, but I still have mixed feelings about it. It doesn't seem to get the distances or channel levels exactly right, and some are way off. For example, it had my left surround about 2.5 dB too hot.
But my question is why does Audyssey calculate that the distance to my sub is 1.7 feet when it's actually 6.7 feet? Should I leave it alone or change it?
_________________________
I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins

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#242505 - 01/24/09 05:20 PM Re: Another Audyessy question [Re: Joe_in_SC]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13321
Loc: Iowa
How do you know your left surround is to hot? The room characteristics and speaker placement play a huge role in the end results. My right surround is 2 dB's different than my left surround, because my right surround has no wall behind to reinforce things.

The sub distance can somtimes be different based on internal delay in the sub amp circuitry, especially in DSP subs. However, normally the setup has it further away than the physical distance.
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#242511 - 01/24/09 05:54 PM Re: Another Audyessy question [Re: SirQuack]
Joe_in_SC Online   content
devotee

Registered: 02/16/04
Posts: 307
Loc: Charleston, SC
After I ran Audyssey, I checked all the levels with my sound meter. And I don't have a DSP sub (EP350 v2).
My initial reaction after listening for a few hours to a movie is that the sound is fuller, but slightly colored and artificial. Not unpleasant, just more noticeable.
_________________________
I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins

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#242520 - 01/24/09 06:30 PM Re: Another Audyessy question [Re: Joe_in_SC]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13321
Loc: Iowa
As long as you had the SPL meter in the EXACT location left/right/height and orientated straight up, I can see your concern, the SPL reading should be the same. However, the dB levels on the receiver might be a few dB's different to achieve the same reading.

In regards to the sub that is strange as well. My EP350v3's using my old Denon 2805 setup give me the exact distance from the sub's voice coil on the driver to the mic. Now the EP600 is another story, because of the DSP, the receiver puts my 600 about 10ft further than it actually is....I don't have Audyssey.
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#242532 - 01/24/09 07:19 PM Re: Another Audyessy question [Re: SirQuack]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10398
Loc: Calgary, Alberta
Which receiver are you using?

When you do the audyssey setup are you doing 3,4, or more locations? I have found Audyssey really needs the extra locations to get its EQ right.

Do you have the latest firmware updates for your receiver, if avaialble? There could be other noises that are causing Audyssey to set things up wrong, make sure the room is dead quiet. I do my set ups at 2-3AM when I get home from work.
_________________________
Jason
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#242534 - 01/24/09 07:31 PM Re: Another Audyessy question [Re: jakewash]
Joe_in_SC Online   content
devotee

Registered: 02/16/04
Posts: 307
Loc: Charleston, SC
I've got a Denon 2308CI, so no software issues. I used all 6 locations that it allows, and I did the 3 main seating positions plus another 3 readings about 2 feet in front of those.

Outside noise is a possibility. I shut off the furnace, but there could be some faint road noise affecting the readings. Do you think that could be affecting the sub distance?

Bottom line is still - should I adjust the distance to the actual measurement or go with Audyssey? I suppose I could try both and see if it makes a difference. Maybe I'm stressing over something that really doesn't matter that much?
_________________________
I started out with nothing & I've still got most of it left
M60 VP160 QS8 EP350
M22 VP100
Algonquins

Top
#242539 - 01/24/09 07:51 PM Re: Another Audyessy question [Re: Joe_in_SC]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13321
Loc: Iowa
Well, you do want your SPL readings to be the same from the primary seating position. The distances and dB levels on the receiver for each speaker can be different, but the goal is to have the same SPL from the desired seat. If your going back and running the receivers pink noise, and the Radio Shack meter has a 2+ difference between the left/right surrounds that is not right. How many times have you run the Audyssey? Maybe you will get different results if you run it again..

The first measurement you take is the crucial one, which sets the distances, dB levels, etc.
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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#242545 - 01/24/09 08:36 PM Re: Another Audyessy question [Re: SirQuack]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10398
Loc: Calgary, Alberta
Maybe try only 4 readings. I know the 3808 has had some issues in some rooms with the max 8 readings, not sure why, but when they dropped to 4 or 6 readings it worked right.
_________________________
Jason
-----------------
TTTHHHPPPPPTTTT!

My HT

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#242553 - 01/24/09 09:27 PM Re: Another Audyessy question [Re: jakewash]
dewd Offline
local

Registered: 05/05/08
Posts: 200
Loc: Mechanicsburg, PA, USA
When using an SPL meter, you are measuring white noise with all the room problems. When Audyssey measures, it uses sweeps. Also, there is a +/- 2db variance on the SPL and the Audyssey MIC.

The sub distance is a problem. It should not be closer (it could be farther and still be correct). Was there any room noise when you did the test. Thinks like cooling fans can make Audyssey give weird results.
_________________________
Dave
Audyssey Setup Guide

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#242556 - 01/24/09 09:48 PM Re: Another Audyessy question [Re: dewd]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13321
Loc: Iowa
Hey Dave, none of your Home Theater website pictures are working, fyi....
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

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