The astounding new AS-EQ1 SubEQ goes on sale! Discuss The astounding new AS-EQ1 SubEQ goes on sale! in the Manufactured Speakers | DIY Subwoofers forum; The astounding new AS-EQ1 SubEQ goes on sale! aNomad wrote: I'm leaning toward the Neptune EQ. I get it, it's straightforward. It is a digital "graphic EQ" with ...

**Kal Rubinson** · **05-21-09, 04:58 PM**

Quote:

aNomad wrote:

I'm leaning toward the Neptune EQ. I get it, it's straightforward.

It is a digital "graphic EQ" with fixed frequencies and fixed Q. Works well. My review is in press.

Kal

**Lordoftherings** · **05-21-09, 09:34 PM**

Quote:

Kal Rubinson wrote:

It is a digital "graphic EQ" with fixed frequencies and fixed Q. Works well. My review is in press.

Kal

Graphic EQ! Works well!

Your review Kal, at Stereophile, is it avail on line too?

Is it possible here at the Shack that you can include the link to Stereophile in your sig? Just like you did at AVS.

By the way Kal, I'm looking at these graphs of the prior page from these two fellows, are those real?
Are they truly representative of the actual measurement before and after AS-EQ1 SubEQ?
Because if they sound as good as they look (after), it must be simply amazingly great sounding sub low frequencies with a total control an pitch definition with the best thump in the cavity of your chest never achieved before! "Astounding" will be indeed the appropriate word.
Better than the AVP-A1 with Audyssey Pro?

Bob

**Kal Rubinson** · **05-21-09, 10:44 PM**

Quote:

Lordoftherings wrote:

Graphic EQ! Works well!

Your review Kal, at Stereophile, is it avail on line too?

The Neptune EQ review will be out in the July issue and will probably appear on line about 60 days after that.

Quote:

Is it possible here at the Shack that you can include the link to Stereophile in your sig? Just like you did at AVS.

Sure. www.stereophile.com/musicintheround

Quote:

By the way Kal, I'm looking at these graphs of the prior page from these two fellows, are those real?
Are they truly representative of the actual measurement before and after AS-EQ1 SubEQ?
Because if they sound as good as they look (after), it must be simply amazingly great sounding sub low frequencies with a total control an pitch definition with the best thump in the cavity of your chest never achieved before! "Astounding" will be indeed the appropriate word.

They are typical of all the Audyssey graphs which are smoothed, both the pre and the post. As such, I think they are more representative than detailed.

Quote:

Better than the AVP-A1 with Audyssey Pro?

Well, I haven't used the AVP-A1 at all but I have used Audyssey Pro with other equipment including the SEQ. Better? Dunno until I measure it.

**JimP** · **05-22-09, 12:06 AM**

Was it ever determined how much smoothing was applied to the graph?

For that matter, has anyone posted a REW graph of a smooth AS-EQ1 graph. I'd like to see what the uglies look like.

**Kal Rubinson** · **05-22-09, 08:33 AM**

Quote:

JimP wrote:

Was it ever determined how much smoothing was applied to the graph?

Not that I know of but it is pretty easy to do. One argument is that the smoothed graph is more representative of what we hear and that those with less understanding of the physics and psychophysics would be put off to see the remaining "warts."

Quote:

For that matter, has anyone posted a REW graph of a smooth AS-EQ1 graph. I'd like to see what the uglies look like.

The uglies would depend on the specific context and, in some cases, not exist postprocessing. The only uglies that matter are your own.

**JimP** · **05-22-09, 09:00 AM**

Quote:

Kal Rubinson wrote:

The uglies would depend on the specific context and, in some cases, not exist postprocessing. The only uglies that matter are your own.

I think I got lost in there somewhere.

I'm just trying to find out if the graph infers a much higher degree of correction than is actually occuring. Granted, some peaks and dips won't matter, but I'd like to see for myself.

Since we're on the topic, one of this forum regulars had an interesting writeup a while back where he felt that you should use 1/3rd octave smoothing to avoid problems caused by overcorrecting small dips/peaks.

**Kal Rubinson** · **05-22-09, 05:59 PM**

Quote:

JimP wrote:

I think I got lost in there somewhere.

I'm just trying to find out if the graph infers a much higher degree of correction than is actually occuring.

I believe so because the "before" curve is equally smoothed. Are either all-revealing? Probably not. Is it a good representation of what it is doing? To a great degree.

Quote:

Granted, some peaks and dips won't matter, but I'd like to see for myself.

Then you have to measure it independently with REW or other tool.

Quote:

Since we're on the topic, one of this forum regulars had an interesting writeup a while back where he felt that you should use 1/3rd octave smoothing to avoid problems caused by overcorrecting small dips/peaks.

Not unreasonable.

**Lordoftherings** · **05-22-09, 10:31 PM**

Quote:

Kal Rubinson wrote:

The Neptune EQ review will be out in the July issue and will probably appear on line about 60 days after that.

Sure. www.stereophile.com/musicintheround

They are typical of all the Audyssey graphs which are smoothed, both the pre and the post. As such, I think they are more representative than detailed.

Well, I haven't used the AVP-A1 at all but I have used Audyssey Pro with other equipment including the SEQ. Better? Dunno until I measure it.

Thank you very much so Kal for these very precise answers.

Yeah, I should have mentioned the Integra DTC-9.8 instead of the AVP-A1.

But the nice thing about the AVP-A1 is the three separate subwoofer's correction EQ.

Bob

**Patrick Nevin** · **05-22-09, 11:38 PM**

Well I have a flat response from 100 to about 20hz. I did have a few problems like forgetting to plug in the USB to the computer to the ASEQ1 and turning on the auto calibration assistant. I noticed when i was in the YPAO to see the sub filters and it had 1 filter so i reset it to flat. I couldn't use the 0db pink noise but i did get the speaker and sub to read 75db. I used 7 positions which are all from my chair. It said to have my sub distance at 16 feet and to have the trim at -.5. I put the speaker from large to 80 hz. After that i took out the rat shack meter and use the pink noise from my receiver to set all of my speakers including the presence to 75db and the sub to 73db to account for the of the meter on bass. The main volume on the receiver for reference is -5. Bass is MUCH improved. There was no ringing and i can feel the bass more in the chest which is awesome. How hot is the ASEQ1 supposed to get because when i went to turn it off after a couple of hours of use it was hot. I don't want to ruin it because it is too hot. I can move to the top of the subwoofer so it dose not get hot. I am tempted to turn the subwoofer to face the room and see what type of response I get. I might try that when I am feeling better. Another question i have is the way I figure out how to figure out the phase with a 80 and 60hz crossover. I use a cd with those frequencies and i use the suboofer phase in the Yammie gui. i play the 80hz tone with the rat shack meter at my listening position. The sub has the phase at 0 so I have to have the phase in the receiver at reverse. When I do the 60 hz crossover it is normal phase. Do I need to do this with the ASEQ1?

Thanks
Patrick

**CharlieU** · **05-23-09, 12:33 AM**

I bought the AS-EQ1 so I could bring my PC+ 20-39, which has been loafing hooked up to my computer, down to my HT setup to join my PC 13 Ultra. I'm using a 16Hz tune on the PC+ and 15Hz tune on the Ultra. My receiver is a Pioneer SC-07.

Since all my gear is squeezed into a pretty compact area, I knew this process was going to be a nightmare. I was right, but I still stuck to it moving the connection around making sure all my speakers were at 75db. After the level matching, it was a piece of cake. Move the tripod, click the button. I did 10 positions, 2 in each outboard seat and 6 in my primary seat.

After I put away all the miscellaneous pieces and attached the faceplate, I sat down to give a listen to some music and see what had changed. The first thing I noticed is that two subs are better than one. It just seems to even out the bass (equal pressure in each ear) better. Next I noticed that my mids were clearer, more open. I threw in the Mudbone - Fresh Mud CD which is a high quality recording with excellent bass. This one really shined as the vocals and instruments separated and created a surround effect while the bass line kept pumping. For music, I give the AS-EQ1 two thumbs up.

Next I moved on to movies. I noticed that the impact didn't seem as great as before when I was just using the Ultra. I can't say that I heard more bass frequencies as I had the Ultra pretty well tuned in the first place. My favorite test is the space craft landing and explosion in Star Wars Episode 2. The pounding on my chest was less than I've experienced before. On a positive note, when hopping from seat to seat, the difference in bass was undetectable by me. It appears that the AS-EQ1 does the job of getting bass right at more than one position. So for movies, the jury is still out.

My graphs are below. (I think. This is my first time trying this.) To me, it looks like I started out in pretty good conditon.

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