Since many of us have been doing the FR graph and even waterfall chart, it is better for us to share it here .

Also, please share ways / ideas in taming the graph.

Pls also specify the room dimension, any acoustic treatment, etc (if possible)


Mine :

Room size : 10' x 20' (bad room size)
Minimal acoustic treatment with absorption panels and book shelf at the back as diffusor. No bass traps.

Previously



Sorry for the previous image



This post has been edited by htkaki: Sep 29 2009, 11:14 AM

Here's the AS-EQ1 :

Jz done the AS-EQ1. I have yet to use 4310 to run Audyysey, which is recommended by most of the avs forummers.

Yes, it is indeed impressive. Here's the review :

http://www.audioholics.com/reviews/acousti...s-as-eq1-sub-eq

That goes to show how effective a bass trap is. Mind to show the bass trap. IIRC, it's a DIY, right?

Back to trim level, the AS-EQ1 calculated the distance and trim level, which I need to set it to my 4310. Trim is at -4dB.

I suspect it could be the ugly room nodes since my room dimension s**ks (10' x 20'). But, I will also ask Ed abt the questions that you raised to double confirm

The tone is set at 75dB

The graph is quite good considering that it is being done via Auto EQ and SR6003.

jchong,

I have got the answers :


Q1. The dip at 40Hz (must be room nodes) was being rectified to a certain extent; +10dB.

A1 : Yes, it's a room mode. Please try to move the listening position forward or rearward. This is an axial mode and you should be able to move out of it within 2-3 feet in either direction.



Q2: Is there a limit that the AS-EEQ1 can boost; like around 10 dB. Some other devices are very limited to below 6 dB or less.

A2 : Yes, there is a limit; it's 9 dB.


Q3: Does AS-EQ1 equalizes below 20 Hz? I notice the portion below 20 Hz looks about the same as the 'before'. If yes, then what could be the reason of this graph.

A3: Yes, the AS-EQ1 will equalize to 6 Hz with the current firmware/software. Make sure to set your room gain control to Bypass. Also make sure any THX Ultra II boundary gain compensation is set to off/no, and all your speakers are set to Small with 60 Hz for the mains, and 80 Hz for all others. Something else is causing a premature roll-off from 20-15 Hz. The subwoofer should be flat to 15 Hz before roll-off. Move the listening position and try it again.


On the above, I did wrongly set my speakers since the front is being set as full range (Large) and 40Hz for center and 60Hz for surr. Lesson learned

This post has been edited by htkaki: Sep 30 2009, 08:27 AM

I will do the calibration againto see how the new FR graph will look like. Hopefully that we can see a FR graph of 2 diff makes & models by Sunday.

I put it at ear height and done 32 positions (wt AS-EQ1)

Hopefully, there will be more FR graphs in coming weeks, if you know what I mean

Anfieldude, I might send the AS-EQ1 to one of my cust in PG first for him to try out. Then, you guys turn to lay hands on it. Ok for you all?

Bro, can post here to 'streamline' it adn easy for others to view?

Btw, EQ1 can do time domain.

The EQ1 would be in PG after Deepavali. Eager to see the result.

If the customer keep it after the satisfying result, then I'll send another one up. Just for Ron and you to test it out.

This post has been edited by htkaki: Oct 8 2009, 07:56 PM

Np, bro. Just that I've a 'hidden agenda'

Dying to see the waterfall chart and the time domain correction that EQ1 is capable of. I don't have such equipment to do so at the moment. So, send to anfieldude and you would be ideal.

gocitygo's acoustic treatment is impressive With the many bass traps and acoustic treatment, it does eliminate most of the acoustic issue normally found in room.

I agree with you o the YPAO. It's proven with my previous FR chart. nothing much can be done by YPAO esp 'valley'

Waiting anfieldude to come over in few weeks time. I will disengage EQ1 to get 'before' reading and then engage it to have a look at the near flat curve.

Yes, should leave the room as it is in order to get better result.

Bro, are you in KL tmw?

Here :

http://www.youtube.com/watch?v=AV3oLLMgS-M&feature=related

Yeah, worth a try to contact WKH. Even for a minimum fee (for those units w/o warranty), IMHO still worth it.

I am waiting for someone's FR graph

Mine :



This post has been edited by htkaki: Nov 13 2009, 12:37 AM