Your Home Theater ULF Score - Page 82 - AVS Forum
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post #2431 of 2432 Old Today, 06:51 PM - Thread Starter
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Quote:
Originally Posted by eljaycanuck View Post
Thanks...and woo-hoo!! ;-)



Not sure about reference at 12.5Hz. The back-right corner seems to have little to no gain, so the FR curve for the SS-18s alone drops fast below ~40Hz or so.


Up front, the UXLs dig a bit deeper than the SS-18s used to, but I haven't tried forcing a "flat to 10Hz" curve on them yet and then seeing what kind of SPL I can get at the lower end.


Together, though, the subs play very well and I'm getting what I would describe as very smooth, "full" and deep bass, with more tactile effect than I've ever experienced (without even having to run the subs as hot as I used to).


1. I'll try to post a couple of graphs tonight.
2. If I get tired of quad subs (I can't see that happening any time soon), my next step would be to try ported cabs for the UXLs and see how a pair would compare to what I've got right now.
Good to know that reality is fairly close to the ULF score estimate.

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Originally Posted by eljaycanuck View Post
Here's the graph (+/-3dB to 16Hz, 80Hz x-over), with:
- yellow = SS-18s (Aud off)
- green = UXLs (Aud off)
- red = all subs (Aud off)
- black = all subs (Aud on)
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Originally Posted by eljaycanuck View Post
No, that's room positioning. Here's a graph of the UXLs in those spots vs. the SS-18s in the same spots a few months ago:
- Audyssey off
- black = UXLs (w/ 80Hz x-over)
- red = SS-18s (w/ 200Hz x-over)
I still think there's something wrong with your setup or measuring gear. That drop is very strange...and you can't EQ through it? Have you tried playing with the phase real time? I would play with the phase until the dip goes away, and then eq the other parts of your response until you are flat.


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post #2432 of 2432 Old Today, 06:54 PM
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I'll try playing with phase, but that dip has always been there, whether it's been one sub or two up front, ported or sealed.

I did force a "flat to 10Hz" curve onto the SS-18s at one point, but then I ran Audyssey and - you guess it - the curve rolled off at ~17Hz.

-- Edit --
Here is where I posted the results of that 10Hz curve. Looks like Audyssey didn't roll the curve off - I must've confused it with something else.


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Last edited by eljaycanuck; Today at 07:02 PM.
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