The astounding new AS-EQ1 SubEQ goes on sale!

**JimP** · **09-11-09, 09:21 AM**

I just got mine in on Wednesday.

So far I've gotten it installed with a 1 sub installation and am looking forward to bring my second sub back into the room to try the two out method.

I know you're not suppose to mix subs that are sealed vs ported (Velodyne HGS-15 and SVS-PB Ultra13), but it should at least be an interesting experiment to see what happens.

**BigPines** · **09-11-09, 10:09 AM**

Quote:

JimP wrote:

I just got mine in on Wednesday.

So far I've gotten it installed with a 1 sub installation and am looking forward to bring my second sub back into the room to try the two out method.

I know you're not suppose to mix subs that are sealed vs ported (Velodyne HGS-15 and SVS-PB Ultra13), but it should at least be an interesting experiment to see what happens.

I don't see anything wrong with mixing sealed and ported subs. As long as the placement is good, I think it is perfectly acceptable.

Mike

**cavchameleon** · **09-11-09, 10:26 AM**

Quote:

BigPines wrote:

I don't see anything wrong with mixing sealed and ported subs. As long as the placement is good, I think it is perfectly acceptable.

Mike

+1
Especially if they have similar capabilities (extension/spl levels), which the two mentioned do.

**cavchameleon** · **09-11-09, 10:29 AM**

Quote:

Pocobear wrote:

I've had my AS-EQ1 unit setup now for a week now and I'm pleased as can be. My graph now show that it's flat (+/- 1db) from approx 15Hz to over 250Hz, and more importantly it sounds great. I learned that no matter what the graph says, if it doesn't sound right, then move something, sub or seating! Thanks Doug. I'm using a PB12 Ultra/2 (twin 12" in one box) and a 16-48 PC+. I started out with the PC+ in the left corner and the Ultra one third of the way out from the left front wall and tried several variations on that idea and always came up with a dip of about 4db at 27Hz. Doug suggested moving one to the other side of the room, so I rearranged some DVD/CD racks and moved the PC+ to the right front corner of the room. WHOA!! what a difference!!! Now it sometimes feels like my Clark Synthesis shakers are on when their not! AWESOME DUDE!

Remember, no matter what the graph says, if it doesn't sound right, MOVE sub or seating and try again, if that doesn't sound right try a second sub, borrow one if you have to, it's worth it!!

Good post! It's always important to keep in mind that placement (speakers / seating position) come first, if possible, acoustical treatments second, then electronic correction. Sometimes due to WAF, acoustical treatments are not an option, but placement usually is (not always, but most of the time). Even small subwoofer placement changes can have enormous affects on modes/nodes in a room.

**eugovector** · **09-11-09, 10:30 AM**

Keep in mind that the graph is not a true measurement, but an electronic estimation of room response. To see how your room is truly performing, you'll need to go the REW route.

**Pocobear** · **09-11-09, 11:34 AM**

If your worried about sealed vs. ported mix, then seal the PB13Ultra with all 3 ports plugged and give it a try. The EQ1 will smooth it out and they will both have the same characteristics. Also when your adding another sub each one only has to work approx half as hard for a given SPL and I believe that the larger the radiating surface the more realistic the sound .

**JimP** · **09-11-09, 12:24 PM**

Pocabear,

I wish it was that simple.

Even trying to intergrate two idental subs that were manufactured months apart can be a nightmare. You can get pretty graphs alright, but then what does it sound like.

**Doug McBride** · **09-11-09, 06:50 PM**

Quote:

Pocobear wrote:

I've had my AS-EQ1 unit setup now for a week now and I'm pleased as can be. My graph now show that it's flat (+/- 1db) from approx 15Hz to over 250Hz, and more importantly it sounds great. I learned that no matter what the graph says, if it doesn't sound right, then move something, sub or seating! Thanks Doug. I'm using a PB12 Ultra/2 (twin 12" in one box) and a 16-48 PC+. I started out with the PC+ in the left corner and the Ultra one third of the way out from the left front wall and tried several variations on that idea and always came up with a dip of about 4db at 27Hz. Doug suggested moving one to the other side of the room, so I rearranged some DVD/CD racks and moved the PC+ to the right front corner of the room. WHOA!! what a difference!!! Now it sometimes feels like my Clark Synthesis shakers are on when their not! AWESOME DUDE!

Remember, no matter what the graph says, if it doesn't sound right, MOVE sub or seating and try again, if that doesn't sound right try a second sub, borrow one if you have to, it's worth it!!

Glad to be of help.

You have a PM.

Doug

**drdoan** · **09-12-09, 01:05 PM**

Just received my AS-EQ1. Here are the results. What the graph doesn't show is how much the rest of my system's sound improved! Now the Denon's Audyssey's corrections went to the other speakers, making them sound even better than ever! Thank you SVSound, and Audyssey!!! Dennis

**Jon Liu** · **09-13-09, 03:32 AM**

I must say, that is very impressive, Dennis! I contemplated getting an AS-EQ1 when I first heard it announced some time ago. It's certainly yielding fantastic results for nearly everyone.

SVS and Audyssey as individual companies have impressed me greatly in the last two years, but now having them joining up to make a great product really takes the cake. It seems they hit it out of the park with the AS-EQ1.

**JimP** · **09-13-09, 04:10 AM**

Dennis,

If you have the capacity of running REW, please post a graph of your after calibration frequency response.

**eugovector** · **09-13-09, 05:54 AM**

Quote:

JimP wrote:

Dennis,

If you have the capacity of running REW, please post a graph of your after calibration frequency response.

Yes, please do. Would love to see some real world graphs to temper the seemingly impossible flat predictions that the electronic graphs are giving.

**TRiSS** · **09-13-09, 01:06 PM**

I did some quick measurements with rew - sub only
green=eq off, red=eq on

also, for fun, some measurements with the sub out connected to the "mic in" of the soundcard:
blue = off, purple = on

**Jon Liu** · **09-13-09, 03:57 PM**

Hmm, there is a big arch between 70Hz and 45Hz even after correction.

The AS-EQ1 doesn't do anything about that? It boosts the dip between 35Hz and 25Hz a bit, though...

**JimP** · **09-13-09, 11:04 PM**

Would anyone like to take a stab at why the after response isn't flatter?

**BigPines** · **09-13-09, 11:07 PM**

Quote:

JimP wrote:

Would anyone like to take a stab at why the after response isn't flat?

I'll take a stab. The AS-EQ1 curve was averaged between multiple measuring positions while the REQ was taken at one particular position.

Mike

**eugovector** · **09-14-09, 12:17 AM**

and perfect real world response is just something that will never happen, but yet, we strive for it daily...

**TRiSS** · **09-14-09, 01:46 AM**

Quote:

BigPines wrote:

I'll take a stab. The AS-EQ1 curve was averaged between multiple measuring positions while the REQ was taken at one particular position.

Mike

sounds logical. It does sound better with it on, and I didn't really get any better results before doing it manually with a BFD.

I did have some weirdness with the trim levels though... I cran audyssey on my onkyo 876 with EQ assist, and that did seem to set my levels and distances correctly. It put the "autoeq assist sub level" at -7.
After running the as-eq1 setup, the distance seems correct, but the suggested trim level seems not: it suggests 1.9 dB, which is by ear and by meter about 4 db too hot: I use -2 dB... Always wondered how it calculates that suggested trim level, I guess it assumes a certain level at 0dB trim in the receiver?

Did anyone else have to divert from the suggested trim this much? Does it indicate a problem? I got about the same result with multiple runs...

**cavchameleon** · **09-14-09, 08:58 AM**

Quote:

BigPines wrote:

I'll take a stab. The AS-EQ1 curve was averaged between multiple measuring positions while the REQ was taken at one particular position.

Mike

Yep! To get a close response to the AS-EQ1, REW would have to be run with averaging all the exact same spots as you did when you ran the AS-EQ1. I'm not sure REW can average that many spot though, if one is using all possible 32 locations from the AS-EQ1.

Ray

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

Quote:

eugovector wrote:

and perfect real world response is just something that will never happen, but yet, we strive for it daily...

Agreed! One would need a 'perfect' room (if that exists) and a perfect setup with perfect equipment (again, 'if that exists').

Ray

**TRiSS** · **09-14-09, 09:04 AM**

Quote:

cavchameleon wrote:

Agreed! One would need a 'perfect' room (if that exists) and a perfect setup with perfect equipment (again, 'if that exists').

Ray

And I can assure you my room is FAR from the perfect room :-) It's basically a bedroom already stuffed with cupboards and a desk, and some HTgear thrown onto that wherever i could get it to fit without falling over it :-)

**JimP** · **09-14-09, 09:35 AM**

If you're trying to figure out what EQ1 is doing, couldn't you leave the mic in one spot and run 4 or 5 sweeps, then put the REW mic in that same spot and run one????

**sub_crazy** · **09-14-09, 10:56 AM**

+1

JimP makes a valid yet simple point.

**drdoan** · **09-14-09, 11:11 AM**

Because the Audyssey (both in my Denon Receiver, and the AS-EQ1) is adjusting both frequency and time domains, among other things, a straight response graph may not be an accurate representation of the sound as the listener hears it. As far as REW graphs, I would rather wait until I can get a better mic than my RC analog meter to measure with. I suspect the mike included in the AS-EQ1 is a better mike.
All I can tell you is that although I liked my system before, I am blown away now! The bass is so clear, distinct, and, more even than before. I have watched a few bass heavy movies this weekend, and feel that the sound has significantly improved, not only in the bass, but in the other speakers. The clarity has noticeably improved. The AS-EQ1 should be required equipment for all bass heads!! Dennis

**cavchameleon** · **09-18-09, 02:27 AM**

I think it would be very difficult to get a close correlation with REW and the AS-EQ1 since they measure differently. The time domain issue as mentioned is a very big issue IMO (more important than the flattest Freq response. Also, if you do all 32 measurements with the AS-EQ1, one would have to do the same with REW in the exact same positions and then average then to compare the results to the AS-EQ1.

Received my unit, but have not had the time (with the house being to myself and alone) to have some fun with it yet. Hopefully this weekend

.

Ray

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