spl vs Audyssey MultEQ® XT32
CinderLyon
Posts: 108
Is there any issue with correcting sound level with an spl after setting up with Audyssey MultEQ® XT32? I check and Audyssey MultEQ® XT32 can be off a bit.
Fronts: Polk RTiA9
Center: Polk CSiA4
Sides: Polk F/XiA6
Rears: Polk RtiA3
Sub:Polk DSWPRO 660wi
extras: 2x JBL Monitor 4206
AVR: Marantz Cinema 50
Amp: Hypex UcD400 Class D, 2 Channels
Power Conditioner: Belkin PureAV Home Theater Power Console pf60
Many different streamers, Heos, firestick, apple
Center: Polk CSiA4
Sides: Polk F/XiA6
Rears: Polk RtiA3
Sub:Polk DSWPRO 660wi
extras: 2x JBL Monitor 4206
AVR: Marantz Cinema 50
Amp: Hypex UcD400 Class D, 2 Channels
Power Conditioner: Belkin PureAV Home Theater Power Console pf60
Many different streamers, Heos, firestick, apple
Post edited by CinderLyon on
Comments
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The issue here would be that by using terms such as "correcting" and "off a bit", you're for some reason assuming that a manual measurement with an SPL meter is the more accurate one. This is quite unlikely. The meter in your XT32 processing is at least as accurate as the typical SPL meters sold for home use. The data it collects are then processed electronically and should have a very low margin of error. In contrast, using an SPL meter for a manual calibration adds the element of human error in reading the meter. The Audyssey calibration is likely to be the more accurate one.
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Well i went and tested it against a known source (test cd 3 from audiophile).
Basically my current conclusion supports using Audyssey and leaving it alone. I do have a pretty decent spl. but I don't think I can do much better than what this version of audyssey is doing with out some more expensive gear. I could see tweaking to personal preference such as increasing the surrounds bit.Fronts: Polk RTiA9
Center: Polk CSiA4
Sides: Polk F/XiA6
Rears: Polk RtiA3
Sub:Polk DSWPRO 660wi
extras: 2x JBL Monitor 4206
AVR: Marantz Cinema 50
Amp: Hypex UcD400 Class D, 2 Channels
Power Conditioner: Belkin PureAV Home Theater Power Console pf60
Many different streamers, Heos, firestick, apple -
Actually, human error is involved in both ways. Never take an auto calibration as gospel and always tweek settings to your tastes. There's no rocket science here.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
Also realize that using Audyssey isn't as simple as you might think. You need to follow obvious steps to ensure that the data you're giving it is good, so you don't get a garbage-in/garbage-out situation. If you're not using a tripod or boom mic stand for the mic, you're doing it wrong. If you're not using all available positions, you're doing it wrong. There are plenty of places where you can read the proper steps to use Audyssey for best results.Equipment list:
Onkyo TX-NR3010 9.2 AVR
Emotiva XPA-3 amp
Polk RTi70 mains, CSi40 center, RTi38 surrounds, RTi28 rears and heights
SVS 20-39CS+ subwoofer powered by Crown XLS1500
Oppo BDP-93 Blu-ray player
DarbeeVision DVP5000 video processor
Epson 8500UB 1080p projector
Elite Screens Sable 120" CineWhite screen -
Exactly.....the calibration software can be thrown off by human error too. Where the mic is set up, if any noise is going on in the home while it's running the calibration, etc. I don't know how many times we have seen threads of people running the auto calibration and then complaining about their system sounding like garbage.
Always check/tweek settings, auto calibration is probably best described as a very good starting point, but not the end point.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
The topic here was the possible use of an SPL meter, and has nothing to do with the complex Audyssey room correction process. The calibration for levels and distance delays is the relatively simple preliminary step taken at one position. Again, the added factor of possible human error in reading the meter, which doesn't exist in the Audyssey calibration, makes it highly unlikely that a manual reading of an SPL meter would be more accurate.
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When I calibrated my new pre/pro it produced a steady tone. It wasn't very difficult to read a number on the SPL, and then make sure each channel provided the same number. If the tone sweeps through a variety of levels then manually reading an SPL meter would be error prone.Lumin X1 file player, Westminster Labs interconnect cable
Sony XA-5400ES SACD; Pass XP-22 pre; X600.5 amps
Magico S5 MKII Mcast Rose speakers; SPOD spikes
Shunyata Triton v3/Typhon QR on source, Denali 2000 (2) on amps
Shunyata Sigma XLR analog ICs, Sigma speaker cables
Shunyata Sigma HC (2), Sigma Analog, Sigma Digital, Z Anaconda (3) power cables
Mapleshade Samson V.3 four shelf solid maple rack, Micropoint brass footers
Three 20 amp circuits. -
For what it is worth i calibrated with Audyssey yesterday, and a dog started a few houses away. I then re-calibrated this morning when things were quite. Pretty big difference in the surround calibration. The dog started barking at position 7 and 8 and messed up my surround calibration. I spot checked this morning with my spl on slow, c and Hi and used a known reference CD pink noise playback. The DB was within 0.2 db for all channels.
I trust Audyseey if done in a quite environment.Fronts: Polk RTiA9
Center: Polk CSiA4
Sides: Polk F/XiA6
Rears: Polk RtiA3
Sub:Polk DSWPRO 660wi
extras: 2x JBL Monitor 4206
AVR: Marantz Cinema 50
Amp: Hypex UcD400 Class D, 2 Channels
Power Conditioner: Belkin PureAV Home Theater Power Console pf60
Many different streamers, Heos, firestick, apple -
Audyssey adjusts for time correction and delay - so if you measure with an SPL meter, all speakers might be off by a db or two.
How does Audyssey MultEQ measure and correct problems with room acoustics?
https://audyssey.zendesk.com/entries/73287-How-does-MultEQ-apply-room-correction-polk monitor 70's
center - polk monitor cs2
surround - polk monitor 60's
surround back - jbl e10
sub - velodyne dps 12
sub - polk psw110
avr/pre-amp - onkyo tx-nr809
amp - adcom gfa-5500
amp - carver av405
display - sharp lc70le847u
tv - silicon dust hd homern
blu-ray - oppo bdp-103
hd dvd- toshiba hd xa2
control - logitech harmony one
turntable - technics sl1500 mkII -
lol, I havent ever plugged in my Audissey mic. I'm pretty intimidated by my receivers remote, really.