Antimode 8033 - Page 16

Originally Posted by squall12 

hi guy,

audyssey xt from denon add my woofer (Rythmik FV15HP) distance to 3.06m using antimode 8033c but previous when audyssey xt without the antimode 8033c device my subwoofer distance is around 2.2m, so is it anything wrong with my setting during perform audyssey calibration?

Thanks

Originally Posted by BeeMan458 

No. Due to internal computation/processing delays in the Anti-Mode, one needs to add about three feet to the distance setting. Reads like you're spot on to the DSPeaker recommendation.

Not sure if you're aware of this and if you are, ignore my next but one should run Anti-Mode first and then run Audyssey, MultEQ XT. If this is what you did, without room analyzing capability, this is about as good as it gets.

(See pg. 8, "2.3. After Calibration")

Originally Posted by squall12 

Yes that what i did run antimode first, then calibrate Audyssey with antimode on.

Originally Posted by Pres2play 

The subsonic filters are engaged, which is good, because my budget subs don't go that low (and I dont what the Anti-Mode to try).

Originally Posted by BeeMan458 

If not using a room analyzing program, with the exception of internal AVR settings (crossovers, distance, gain settings, et cetera) you're as good as it gets.

Originally Posted by squall12 

ok Thanks

Originally Posted by BeeMan458 



Hint, hint, you can download REW for free.



But the rest of it is going cost's ya.



(Something to be considered.)

Originally Posted by BeeMan458 

If not using a room analyzing program, with the exception of internal AVR settings (crossovers, distance, gain settings, et cetera) you're as good as it gets.

Originally Posted by tlb48 

if your avr does all that , why do you need rew

Originally Posted by tlb48 

if your avr does all that , why do you need rew

Originally Posted by BeeMan458 

Anti-Mode boosts are funny. If you hit either the +25, +35 or the + both, the lower end is raised but the mid-bass is considerably lowered as if there was some sort of sonic axis thing going on. As to the subsonic setting, that was a neutral in that there was so little measured change that I leave it on for nostalgic reasons; just because it's there and it does no measured harm and I'd feel as if I was missing out if it wasn't there.

Originally Posted by Pres2play 

Just a quick post, hooked up the 8033 last night and gave it a listen today at normal volume. Liked what I heard. Will need to experiment more on the weekend. Watching The Dark Knight Rises, the bass is reined in, yet solid and forceful. The subsonic filters are engaged, which is good, because my budget subs don't go that low (and I dont what the Anti-Mode to try). Much better result than using SMS-1. With SMS-1, the bass seemed dead. (Again, no doubt due to my inexperience with EQs). One thing I will say, I won't listen to system without sub EQ anymore.

Originally Posted by JD in NJ 

I'm not trying to shill or anything here, but Cross Spectrum Labs will sell you a USB measurement mic along with a set of calibration files for about a hundred bucks shipped. No extra hardware required if you have a laptop computer.

Originally Posted by JD in NJ 

I'm not trying to shill or anything here, but Cross Spectrum Labs will sell you a USB measurement mic along with a set of calibration files for about a hundred bucks shipped. No extra hardware required if you have a laptop computer.

Originally Posted by JD in NJ 

Nope, nothing extra needed. I got mine in the mail this week. It's a straightforward USB connection directly to your computer. Load up REW and go.

Originally Posted by JD in NJ 

Nope, nothing extra needed. I got mine in the mail this week. It's a straightforward USB connection directly to your computer. Load up REW and go.

Originally Posted by JD in NJ 

There's also a great big thread along with an associated tutorial over in audio theory setup and chat. It's worth looking through if you are going to get into measurement.

Originally Posted by Pres2play 

Which model?

Originally Posted by BeeMan458 

^^^ What he said.
So one can physically see the changes taking place. Our ears have not evolved to deal with the nuances of subwoofer created content in an enclosed space and without the aid of a room analyzing program, one will "NEVER" be able to get the best out of their subwoofer system. Parametric settings allow one to effect changes. REW allows one to physically see the changes, changing parametric settings create in a room's acoustics.

This is a measurement graph made on 24Jan13 and next to it is a graph made on 26Jan13:

.....

Without aid of REW, I wouldn't have been able to make the necessary changes to effect the correction.

Just for giggles, here's a superimposed before and after graph; the purple line is the before graph created 28Jan13 and the red line is the after graph, created 29Jan13.



The upper graphs are on a 10dB scale and the lower graph is on a 5dB scale and one should look at the graphs as a work in progress.

It's way cool to be able to make small parametric changes and "IMMEDIATELY" see the impact these changes have on a room's acoustical measurements.

.

Originally Posted by JD in NJ 

Dayton Audio UMM-6
http://cross-spectrum.com/measurement/calibrated_umm6.html

Originally Posted by Pres2play 

Yeah, I wouldn't try engaging the lifts if that meant losing mid-bass. What happens if you deactivate the subsonic filters with the Lifts still engaged. (Or can you?) Wouldn't that be the real harm?

Originally Posted by Pres2play 

How are you making changes, besides Anti-Mode? AVR, outboard EQ?

Originally Posted by Joshjp 

HOW do you set the SUBSONIC filter on the AntiMode 8033Cinema? Thanks.