Good stuff man! Subwoofer hum, as mpwy says, u either need to get a better shielded cable or change the power outlet, not too many options there....

100% vol, ur crazy man! Will be back Friday, will call u.

Bro,

Finally u achieved bass nirvana..Can't wait to check it out this weekend.

Welcome , welcome....anytime.

I believe he means the sound coming from the sub..His previous subs could not deliver this scene. Very underwhelming even compared to the lowly IkonSub.

jchong is right, as long as it is not at the lower/upper limits (Onkyo limits for subs are -12 and 12dB) it shd be ok.

ron,

I suspect its ur house. I have the Galaxy back lets try to get some REW curves done this weekend to check it out!

I would not call it mediocre but it is a compromise for music and HT. However, I have posted some charts before, it behaves pretty well. Just not in the same class as Velos, SVS for movies and Submersive/Rythmik for music I think. Then again, my room accoustics are not too bad either. I don't have parallel walls and my ceiling extends quite high.

I believe that a lot of people confuse good clean bass as lacking compared to boomy bass. Therein lies the misconception. I also believe that many people moving from a inaccurate bass environment to a properly calibrated bass environment are going to be saying "Eh where's the bass?".

One way to compromise that is to run the lower frequencies slightly hotter (3-5dB). Typically, this is called a house curve. This will enable u to feel the bass extension from the lower frequencies thus improving ur perception. But the lower frequencies shd still be flat and they shd not linger in ur room too long.

One simple way would be to increase the trims post Audyssey. Aim for it to be above 75dB when checked with a SPL meter.

Submervise....Description : Powerful and Accurate.

Wow! One heck of a sub. Raw power. In ron's room, at low volumes, we were already easily hitting 106dB without any form of distortion. It would have easily topped 115dB in his room if necessary. And with no distortion...

I will try to post some charts tomorrow.

But in short, no lack of power and accuracy, I believe when he re-runs Audyssey with the tripod it will get more accurate. I did not have time to test with/without Audyssey, but will do in the next test.

Ron's room is difficult to equalize yet the sub blended in. Of course the AS-EQ1 will not hurt, the waterfall charts can use a little more taming. Or some bass traps (31.5Hz room mode pretty dominant), however, still looks impressive.

Good stuff.

One thing I forgot to mention of the Submersive, it digs really low! I was getting high dBs right up till 12Hz.

Setting the x-over lower than Audyssey recommendations is not a good idea. Audyssey does not correct below its recommendations. Setting it higher shd be no problem.

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Added on October 5, 2009, 8:36 amI was very impressed. I believe the sub is now screaming for a bigger room. As I said, Ron's room is difficult to equalize. There are a lot of reflections, thus the sub does not have enuf room to exercise its large lungs....

I was especially impressed with Audyssey's correction, there was virtually no boominess that any of us could detect. Even though there is a 31Hz peak, it still performs very well.

This post has been edited by anfieldude: Oct 5 2009, 08:36 AM

The fronts are set to 140Hz post Audyssey? That does not sound right...I cannot recall which fronts u have but I believe if it is a floorstander, then something is amiss. Might need to re-run Audyssey.

Ron's Submersive curves.
(with Ron's permission)

These are preliminary frequency curves that I took yesterday. I just took some basic measurements and it was done with the RS SPL Meter coz I forgot to bring my connector for the Galaxy CM-140. Will redo and play around with the crossovers to see if I can improve on this. Also this was all with Audyssey only and based on the curves I believe Ron can run the Audyssey again with the tripod for better results (since these results were based on Audyssey mic on the chair which is not correct)

1st chart : This is at reference 75dB. Pretty decent results. Room node of 31.5Hz present. Again need to check this post Audyssey again.


2nd chart : Ron's room is pretty difficult and probably needs to be redone after Audyssey. If still not able might need an AS-EQ1 one to improve on this. His lower frequencies barely settle down at 300ms. In fact they linger around for as long as 1s. In fact at 16Hz there is a pickup after 300ms that u cannot see. I believe I need to redo this with the Galaxy. I also believe this will improve after 2nd round of Audyssey. If this cannot be corrected, then a AS-EQ1 is necessary for further accuracy.


3rd chart: With the volume on AVR turned slightly up only, as I said, easily will hit 110dB with almost no distortion


Its a giant sub and if there is flexibility in placement I believe we could make it even better. Will post the new results once its done.

ar188,

Yes I actually did it but did not post. As I said, there are some weird things happening after 300ms - 700ms. Will do it tonight.

htkaki,

Don't worry too much abt people. Individual preferences vary too much. A lot of people like it when the bass is set super heavy and as ar188 said artificially boosted contrasts with washed up blacks and inaccurate colours. Thats how the world is.

ycs,
I believe Audyssey does its correction that includes time domain.

Vibrations induced by the chair surface since the mic is not bolted down. The tripod is normally designed to reduce vibrations. The best way would be to use a mic boom that is on the floor.

Ur sub has a AutoEQ right? U might want to check how to incorporate the EQ from u sub with Audyssey. I remember reading somewhere abt Velo's AutoEQ on the sub and the Audyssey problems.

Yes there is a difference.

If Audyssey is calculating more than actual, this indicates that the signals are arriving at the primary seating position before the rest of the speakers. So in essence it adds distance to incorporate a delay.

However, if it reporting less than actual, it is indicating a possible problem. It cannot make the signals come any faster, since it can only incorporate a delay, need to re-check setup and calibration.

More is ok, it is incorporating a delay.

Imbalanced, need to check setup, are they symetrical? Is one closer to a wall? Or furniture? Sound coming out more, could be the trims not being accurate or some reflections.

It will not give wider soundstage by adding distance.

htkaki,

I'm ok with it, but I'm note sure if Ron can live with that poison! Will PM u to talk abt something in that lines.