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#306522 - 05/14/10 09:41 AM Re: SVS AS-EQ1 subwoofer EQ [Re: fredk]
grunt Offline
connoisseur

Registered: 12/04/06
Posts: 3569
Loc: Nirvana
Will REW generate an average curve for multiple seats?
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#306527 - 05/14/10 10:09 AM Re: SVS AS-EQ1 subwoofer EQ [Re: grunt]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7786
Loc: Canada
Yes it will. So, if you are trying to average across subs and seats, you need to apply EQ calculated from averaged measurments to the entire set of subs. That's my understanding anyway.

REW takes some time to learn, but once you are up to speed, you can measure and adust to your hearts content. Its a tweekers dream. ;\)
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#306534 - 05/14/10 11:12 AM Re: SVS AS-EQ1 subwoofer EQ [Re: fredk]
michael_d Offline
connoisseur

Registered: 07/23/04
Posts: 4211
Loc: Up yonder
I looked into room EQ a while back. Started reading up on REW and all the crap I’d need for the PC interface, time to learn the software, time to analyze the results, time to tweak, time, time, time….. It didn’t take me long to realize that adventure is not for someone with life outside their home theater.

I really like the ease of use the Velodyne SMS-1 offers, and its relatively low cost. However, I’m not certain if it will help much with a multiple sub arrangement. The EQ-1 looks as if it may work a bit better.

Has anyone compared the EQ-1 to the Velodyne to see just what it may do better?
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#306536 - 05/14/10 12:17 PM Re: SVS AS-EQ1 subwoofer EQ [Re: michael_d]
casey01 Offline
aficionado

Registered: 07/03/08
Posts: 852
Loc: Toronto
I have an SMS-1 with FOUR subs and as along as everything is balanced(volume) and in phase it does the job well. One thing, however, I have found over the years, is that with any of these EQ devices and regardless of how many positions from which the calibration can be done, one can come up with a level, balanced curve showing on the screen yet it may still not sound quite right and that is generally as a result of the limitations of human hearing.

For eg: a couple of years back when I purchased the SMS-1 and in doing my initial calibration, I noticed a distinct deficiency in my room with the curve between 40-55HZ. Once I got it leveled out, however, I noticed that even though it was showing a proper balance, the lower levels below 40HZ(at least to my ears anyway) were being overpowered by the upper levels, and that was despite the fact it was showing a level curve on the screen.

In my opinion, this is the advantage of having one of these units in that it allowed me to slightly boost up those lower levels to compensate for what I was hearing in relation to the "official" calibrated curve. That is, of course, provided your subs can handle that "extra boost".

In the end, it is what sounds good to you that will determine what your final set-up is, but given the "finnicky" nature of low bass in any room, either the SMS-1 or EQ-1 will give you a better chance of getting where you want to go.

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#306609 - 05/14/10 08:01 PM Re: SVS AS-EQ1 subwoofer EQ [Re: casey01]
Dduval Offline
devotee

Registered: 01/14/09
Posts: 349
I have the SMS-1 with Dual Ep500's crossed over @ 50hz. Makes a big difference for me, now I can't imagine going without it. FYI

Dana
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#306634 - 05/15/10 09:03 AM Re: SVS AS-EQ1 subwoofer EQ [Re: michael_d]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7786
Loc: Canada
 Originally Posted By: michael_d
I looked into room EQ a while back. Started reading up on REW and all the crap I’d need for the PC interface, time to learn the software, time to analyze the results, time to tweak, time, time, time….. It didn’t take me long to realize that adventure is not for someone with life outside their home theater.

Meh, it took a couple of nights to set everything up the first time, figure out the software, calibrate and take measurements. Now its just a quick 5 minute calibration and I'm set to measure.

As for analysis, whats to analyze?? If its not flat, click the eq button and transfer the settings to the BFD.

If you have the $ for the AS-EQ1 thats fine. If you don't, or prefer to spend it elsewhere, REW and the BFD are a viable alternative.
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#306646 - 05/15/10 04:09 PM Re: SVS AS-EQ1 subwoofer EQ [Re: fredk]
SRoode Offline
connoisseur

Registered: 03/20/08
Posts: 1287
Loc: Fishers, Indiana, USA
With the BFD, I found myself obsessing continously over making my curve flat, more than I found myself spending time enjoying what I had with my family. My solution was simple. I disconnected it.

It did make a noticeable difference in my primary seat however when I was crossed over at 80 Hz. At 40 Hz, I think it would make less of a difference.
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#306651 - 05/15/10 04:53 PM Re: SVS AS-EQ1 subwoofer EQ [Re: SRoode]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7786
Loc: Canada
Maybe I'm lucky, but I was able to get a pretty flat response using just 5 of the presets REW defined. No tinkering needed.
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Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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#306652 - 05/15/10 05:14 PM Re: SVS AS-EQ1 subwoofer EQ [Re: fredk]
SRoode Offline
connoisseur

Registered: 03/20/08
Posts: 1287
Loc: Fishers, Indiana, USA
Me too Fred, but you know how things go. Every little bump and dip became a mountain and a valley in my eyes, and needed to be fixed! \:\) Don't get me wrong, it's a wonderful machine and it does make a big difference!
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2 M80s, 1 VP180, 4 QS8s, 2 EP800s, 4 M3 Outdoor, 2 M3 Rosewood, 2 M5HPs Rosewood, 1 AxiomAir

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#306680 - 05/15/10 08:22 PM Re: SVS AS-EQ1 subwoofer EQ [Re: SRoode]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11733
Loc: Richland, WA, USA
I've already said it in other threads, but my dream subwoofer EQ doesn't exist yet. Ideally, it would correct up to four subs individually (both frequency and time) and be part of the receiver/preamp's native features. It would be nice if you could EQ the bass separately from whatever the main EQ software is, as if it was an external unit, or along with it. Manual tweaking of the curve would also be great. I don't know how far away a product like this is, but you'd think someone would be working on it. I don't really understand the receivers that do 3 subwoofer outs. A jump from 2 to 4 seems more logical, no?

Requiring a computer to utilize the EQ is a bit of a hassle. It would be nice if a PC connection allowed for greater speed or filter resolution, but otherwise I'd prefer to have the interface be part of the receiver/preamp.

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