Databass.com measurements and Audyssey - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 
Thread Tools
post #1 of 4 Old 09-11-2013, 08:54 PM - Thread Starter
AVS Forum Special Member
 
qguy's Avatar
 
Join Date: Dec 2008
Posts: 1,152
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Liked: 91
When comparing 2 subwoofers and 1 sub has 3 db advantage at 20 hz over one sub, will Audyssey correct this to make the advantage of the other sub mute ?
qguy is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 09-11-2013, 09:06 PM
AVS Forum Special Member
 
JHAz's Avatar
 
Join Date: Mar 2009
Posts: 4,603
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 305 Post(s)
Liked: 271
If you mean one sub is -3dB at 20 Hz while the other is flat, Audyssey might or might not "see" differences in in-room performance as the lower 3 dB limit for the sub, meaning Audyssey might not try to equalize the frequency response identically at 20 Hz.

On the other hand, if you mean one sub has a 3 dB advantage in output at high levels versus the other, things are different. Audyssey does not run high SPL tests to assess the power/frequency limits of the sub system. so all it knows is the frequency response in room at the level the test signals play back. not knowing one sub runs out of steam at 20 Hz 3 dB before the other, Audyssey can't "correct" for that invisible (to it) difference.
JHAz is offline  
post #3 of 4 Old 09-11-2013, 10:34 PM
AVS Forum Special Member
 
braveheart123's Avatar
 
Join Date: Jul 2011
Location: Lone Wolf McQuade from Islamabad Pakistan
Posts: 2,454
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 311 Post(s)
Liked: 273
Quote:
When comparing 2 subwoofers and 1 sub has 3 db advantage at 20 hz over one sub, will Audyssey correct this to make the advantage of the other sub mute ?

The term "Flat Frequency Response" is actually +/-3dB, however, die-hard subwoofer fans don't settle for anything less than a ripple-free ruler flat response.
Audyssey may or may not make up for -3dB at 20Hz. It depends on what the flatness target is encoded in Audyssey. But if it does fill up -3dB, it will be actually cutting the sub amp power by half. You may get away with 3dB boost at 20Hz if you are running something like JTR OS with amplification power in spades, but your sub will surely will run out of steam if it has average wattage figures.

I reckon if you are in +/-3dB ballpark, consider yourself lucky. Audyssey or no Audyssey

History is written by those who have hanged heroes ...

Main System: PSB X2T, PSB XC, PSB XB, Cambridge Audio Azur 751R, Rythmik FV15HP, PSB S500
braveheart123 is offline  
 
post #4 of 4 Old 09-13-2013, 08:33 PM
AVS Forum Addicted Member
 
jdsmoothie's Avatar
 
Join Date: Sep 2007
Location: Orlando, FL
Posts: 66,365
Mentioned: 255 Post(s)
Tagged: 1 Thread(s)
Quoted: 12106 Post(s)
Liked: 5509
Also depends on whether you are using an AVR with Audyssey Sub EQ HT which can EQ dual subwoofers (currently only available with most models that use MultEQ XT32).
jdsmoothie is offline  
Sponsored Links
Advertisement
 
Reply Subwoofers, Bass, and Transducers

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off