The astounding new AS-EQ1 SubEQ goes on sale!

**cavchameleon** · **08-04-09, 09:28 AM**

Quote:

BigPines wrote:

Actually, if you are EQing two discrete subs with this unit, it is *two* EQ curves best compromised for all seats.

Mike

Yep! But, which sounds better: this option or EQing both together? I wonder which will give the smoothest/flattest response. This would be a fun test to try (a bit time consuming if using all 32 positions). Has anyone with this unit tried a comparison test?

Ray

**Kal Rubinson** · **08-04-09, 10:18 AM**

Quote:

Kal Rubinson wrote:

How would you apply EQ to a seat?! More seriously, how would you apply EQ to a speaker that is individual for each seat?

Yup.

Quote:

BigPines wrote:

Actually, if you are EQing two discrete subs with this unit, it is *two* EQ curves best compromised for all seats.

Mike

Even if you are EQing for one sub, the correction curve is the best compromise for all seats.

**Ayreonaut** · **08-04-09, 12:38 PM**

If you use a symmetric arrangement to minimize seat-to-seat variation perhaps you should EQ them as one channel. This would preserve the cancellation of all odd order axial modes. (Welti)

But for randomly placed subs, who knows? I would be interested to see it too.

Quote:

cavchameleon wrote:

...which sounds better: this option or EQing both together? I wonder which will give the smoothest/flattest response. This would be a fun test to try...

**Roger Dressler** · **08-04-09, 12:49 PM**

Quote:

BigPines wrote:

Actually, if you are EQing two discrete subs with this unit, it is *two* EQ curves best compromised for all seats.

You may well be right. Is that explained by Audyssey somewhere? All I found was >>The Sub Equalizer is the first component that enables the proper integration of two subwoofers in any home theater receiver. It automatically sets the level and delay for each subwoofer and then creates a room correction solution for both subwoofers combined.<< at their Sub EQ page. If there are more details on how it creates individual EQ curves for each of the two sub outputs, I'm keen to read about it.

**JimP** · **08-04-09, 08:31 PM**

Quote:

Ed Mullen wrote:

All of your speakers are sealed with a 60 Hz extension rating. So use a 2nd order high pass, a 4th order low pass, and a crossover frequency of 60 Hz.

Is this the sme as having a 12 db per octave slope on the high pass and a 24 db per octave low pass?

**cavchameleon** · **08-04-09, 09:07 PM**

Quote:

Roger Dressler wrote:

You may well be right. Is that explained by Audyssey somewhere? All I found was >>The Sub Equalizer is the first component that enables the proper integration of two subwoofers in any home theater receiver. It automatically sets the level and delay for each subwoofer and then creates a room correction solution for both subwoofers combined.<< at their Sub EQ page. If there are more details on how it creates individual EQ curves for each of the two sub outputs, I'm keen to read about it.

Roger,

You can read more info on the SVS site:

http://www.svsound.com/products-parts-subeq.cfm

You can also download their manual from this link. I couldn't attach the file here since it exceeded the file size. It has a lot of info on setup and explains the EQ process. Maybe Ed can cue in here and fill you in with more info. In the Audyssey thread at AVSforum, Chris from Audyssey regularly participates and can answer fully. Kal also visits this thread and the Shack Audyssey thread and has a lot of experience with Audyssey products and has done a review on this unit (I'm waiting Oct issue of Stereophile fore his full review). I find his reviews, experience, and comments very enlightening.

Ray

**bpape** · **08-04-09, 09:25 PM**

That was my understanding. It sets distance and phase and level for each sub individually to get them 'in sync' and then does one eq for both subs combined for the best average response for all the seating locations.

Bryan

**cavchameleon** · **08-04-09, 09:39 PM**

Yes, and it has the capability to do the same independently for both subs (great if you have 'two' different systems but not sure it would be better than the above). IMO I think it's better to set the final curves with both together to create the smoothest response.

Ray

**Roger Dressler** · **08-05-09, 12:59 AM**

Quote:

cavchameleon wrote:

Roger,

You can read more info on the SVS site:

http://www.svsound.com/products-parts-subeq.cfm

You can also download their manual from this link. I couldn't attach the file here since it exceeded the file size. It has a lot of info on setup and explains the EQ process. Maybe Ed can cue in here and fill you in with more info. In the Audyssey thread at AVSforum, Chris from Audyssey regularly participates and can answer fully. Kal also visits this thread and the Shack Audyssey thread and has a lot of experience with Audyssey products and has done a review on this unit (I'm waiting Oct issue of Stereophile fore his full review). I find his reviews, experience, and comments very enlightening.

I appreciate the reply.

Looking at the SVS owner's manual, it does expand upon the Audyssey explanation:

Quote:

The AS-EQ1 will treat dual subwoofers as follows:

One IN to two OUT represents dual combined subwoofers. The AS-EQ1 will “ping” Subwoofer A, ping Subwoofer B, then ping Both Subwoofers. It EQs both subwoofers independently, but will also EQ the combined response and tweak both subwoofers as needed.

Dual discrete IN to dual discrete OUT represents “stereo bass” (two separate sources of bass). Alternatively, it can be used to connect two separate systems in the same room if you have that configuration. The AS-EQ1 will ping Subwoofer A, ping Subwoofer B, EQ Subwoofer A, then EQ Subwoofer B. It will not ping or EQ the combined A+ B.

So it looks like both modes apply individual EQ to each sub (even though the combined mode applies another EQ pass based on the tandem results). Funny that Audysey info neglects to make the same claim for their unit. Or maybe I didn't dig deep enough.

Thanks all.

ETA: Per Audyssey, the One IN to two Out mode is not actually EQing each sun=b separately. He writes: >>You can treat each sub separately with an individual filter and then listen to them together. However, in our experiments we found that much better results are obtained if you first time and level align the subs and then ping them as "one" to create a single filter for the sum. So that configuration is the default setting in the software.<< So the only difference in the feeds is time/level, while the EQ is the same for both. Glad that's cleared up.

**cavchameleon** · **08-05-09, 01:14 AM**

I think the Audyssey site mentions both the SVS unit and their own unit (which is more of a pro-install unit) and focuses more on their own.

Ray

**Patrick Nevin** · **08-14-09, 04:37 PM**

It has been a while since my last post. I did add the auralex atom-12 bass trap system which really didn't help but it made my room more dead in sound. I do have an interesting question. The software tells us to have the sub trim level at but would it be better to have it set at 25% of the sub trim level?

Thanks
Patrick

**Jason_Nolan** · **08-14-09, 10:23 PM**

How much more mid August does it have to be before the second round ships?

**bbtnt** · **08-14-09, 11:06 PM**

I saw in another forum where someone said that SVS was saying the as-eq1 would ship around 8/21.

**Timoxx4** · **08-15-09, 12:46 AM**

I got mine yesterday here in Australia

Just installed it today.

**cavchameleon** · **08-15-09, 03:21 AM**

Quote:

Timoxx4 wrote:

I got mine yesterday here in Australia

Just installed it today.

You're definitely much closer then we are... almost like dropping off a shipment one third the way here. How do you like it? We want some feed back.

I did contact SVS and they said that shipping out to customers here will happen on the 21st, so just around the corner.

Ray

**Timoxx4** · **08-15-09, 07:11 AM**

Yeah so far it seems pretty good. I have only run it the once with 6 mic positions and sat back to enjoy.

It feels like the bass is tighter with a more pronounced thump or kick. It sounds basically the same as what i had before but a little more punchy and maybe slightly smoother.

I just skipped through the chronicles of Riddick on SD DVD to the good bits and watched a few hours of HDTV and gave a quick test with xbox 360 and the game splosion man.

One thing i did have to do was totally go back on what the EQ1 suggested for my level trim settings. Only for the calibration step did i adjust the trim of my center and sub amp so i could run the calibration. I set them back to where they where once the job was done as the settings the EQ1 told me to use where way too quiet for me. So i re-did all the level trims with my spl meter and boosted the bass to my tastes and it’s a lot better.

I would post the graphs but they are on my laptop out in my HT. Next time i am out there i will get them. Not that they tell the whole story anyway but can be interesting to see none the less.

So with my limited testing of the unit i can safely say it HAS improved things over my attempts with REW and a Behringer Ultra Curve Pro DEQ2496. Mostly just the tighter, punchier aspect of the bass is most apparent over anything else. Its a little harder to tell if there is any other difference unless i had my DEQ2496 still setup and could directly A and B the two to compare. But it hasn't done any undesirable things so that's good. I was wondering before i got it, if it might have done something worse than my previous setup but thankfully its only done good

Will post graphs soon.

**Timoxx4** · **08-15-09, 07:30 AM**

Ok here are my graphs.

It appears to have rolled of my low end a little early in the after result but then again this is just an average result over all 6 mic positions so i probably actually still have sub 20Hz in some seats.

This is my previous setup before and after with REW.

This last one has my mains on too.

**JimP** · **08-15-09, 08:37 AM**

Tim,

Run REW with EQ1.

The after graphs with EQ1 are mathematically calculated and not true readings.

**Roger Dressler** · **08-15-09, 12:58 PM**

I'd also be curious to see the direct electrical response of the EQ1 as measured with REW to get some idea of how much "detail" or resolution is being applied by the filters.

**Timoxx4** · **08-15-09, 10:25 PM**

Ok here they are. Oh and i just remembered i have moved my couch forward in the room a little since my first initial REW measurement with my old setup and DEQ2496. That was over a year ago and i didn't run REW again after moving the couch as it sounded fine so the before EQ1 graphs above are going to be slightly different.

Sweet spot after EQ1

Measured the same 6 spots as i did with EQ1 to get this average in REW.

Same as above but with 1/3 octave smoothing to try and match the EQ1 after graph.

Not bad

.

**Thomasdk1405** · **08-16-09, 07:48 AM**

Hi ! I'm now the happy owner of both the AS-EQ1 and the PC Ultra. Something puzzles me - that's why I now turn here. According to manual - all speakers needs to be matched = 75 db or close using the Sat out (Left/center) - but I'm suppose to use this for all speakers. Here comes the real problem.
What speaker should I use for the measurements ?
In my setup I have the sub right next to the front right speaker (to the far right - in the corner of the room). So when I use the Left speaker for the SAT out - I have the largest distance between the Left speaker and the sub. When I measure here - I get 6.4 meters in distance and one type of graph. Using the center will give me 6.3 meters - and a poor graph (cutting the low end too guick) - now here comes the part that puzzles me - if I then use the right speaker for the SAT out - I get 3.10 meters (very close to the actual distance) - very close to ruler flat graph and rolls off the low end late !!??
So what am I fishing after here - what was SVS's intensions with the Left/center thing - only examples or ?
If had the sub to the far left - to the left of the left speaker - I would perhaps get the same results as the right speaker / right corner sub measurement.
And btw - I measure the exact same spots on all 3 (left, center and right speaker).

But besides this - this is one great product !!
/Thomas
Edit:
Just had another go with the right speaker - and now I got 6.30 meters - same - and not the 3.10 meters. But still - got the best graph here off all my tries in the 20 hz mode. Still would like to know if it does matter - or the left/center thing just are examples.

**counsil** · **08-18-09, 12:12 AM**

Has anyone received an AS-EQ1 lately? Isn't there supposed to be another batch shipping out to customers soon? I would like to see some more indepth impressions of this EQ.

**cavchameleon** · **08-18-09, 08:55 AM**

Quote:

counsil wrote:

Has anyone received an AS-EQ1 lately? Isn't there supposed to be another batch shipping out to customers soon? I would like to see some more indepth impressions of this EQ.

Jack from SVS said that they will be shipping on 8/21 - so end of next week. So, a lot should have this in their hands the following week.

Ray

**cavchameleon** · **08-18-09, 09:00 AM**

Quote:

Thomasdk1405 wrote:

Hi ! I'm now the happy owner of both the AS-EQ1 and the PC Ultra. Something puzzles me - that's why I now turn here. According to manual - all speakers needs to be matched = 75 db or close using the Sat out (Left/center) - but I'm suppose to use this for all speakers. Here comes the real problem.
What speaker should I use for the measurements ?
In my setup I have the sub right next to the front right speaker (to the far right - in the corner of the room). So when I use the Left speaker for the SAT out - I have the largest distance between the Left speaker and the sub. When I measure here - I get 6.4 meters in distance and one type of graph. Using the center will give me 6.3 meters - and a poor graph (cutting the low end too guick) - now here comes the part that puzzles me - if I then use the right speaker for the SAT out - I get 3.10 meters (very close to the actual distance) - very close to ruler flat graph and rolls off the low end late !!??
So what am I fishing after here - what was SVS's intensions with the Left/center thing - only examples or ?
If had the sub to the far left - to the left of the left speaker - I would perhaps get the same results as the right speaker / right corner sub measurement.
And btw - I measure the exact same spots on all 3 (left, center and right speaker).

But besides this - this is one great product !!
/Thomas
Edit:
Just had another go with the right speaker - and now I got 6.30 meters - same - and not the 3.10 meters. But still - got the best graph here off all my tries in the 20 hz mode. Still would like to know if it does matter - or the left/center thing just are examples.

Thomas,

The Center/SAT out is only for level matching of your mains to the sub (to get them as close to the 75db range as possible) before running the actual EQ portion of the AS-EQ1. It's done after you run the auto-cal portion of your AVR (connected to the AS-EQ1 as described in the manual). When you level match, you can do just one speaker and 'correct' the other speakers manually for level matching or you can do all of the speakers (connecting the Center/Sat connection to each speaker, line-in, individually and level match each one with the SVS unit). After you are done with the level matching part, you then run the subwoofer(s) eq portion, this is where you will put the 1st mic position in your primary LP and that is the position that will calculate the correct distances for the sub (which you will then input in the BM portion of your AVR).

Hope that helps.
Ray

**counsil** · **08-18-09, 02:03 PM**

Quote:

cavchameleon wrote:

Thomas,

The Center/SAT out is only for level matching of your mains to the sub (to get them as close to the 75db range as possible) before running the actual EQ portion of the AS-EQ1. It's done after you run the auto-cal portion of your AVR (connected to the AS-EQ1 as described in the manual). When you level match, you can do just one speaker and 'correct' the other speakers manually for level matching or you can do all of the speakers (connecting the Center/Sat connection to each speaker, line-in, individually and level match each one with the SVS unit). After you are done with the level matching part, you then run the subwoofer(s) eq portion, this is where you will put the 1st mic position in your primary LP and that is the position that will calculate the correct distances for the sub (which you will then input in the BM portion of your AVR).

Hope that helps.
Ray

What is the likelihood that you would need to adjust the trim level of the center (and all the other satellites for that matter) after just running MultEQ XT on your AVR (during Auto EQ Assist)? If there were differences, what would most likely be the cause? Different 1st measurement position? Differences in mics? Something else?

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