Home Theater Forum and Systems banner
1 - 4 of 9 Posts

· Registered
Joined
·
55 Posts
Discussion Starter · #1 ·
I have successfully EQ'd may mains and are loving the sound, after a few trips down the wrong path which seemed to kill the soundstage.

The questions I have is about the peak at around 600hz and how if at all I should address this?

Here are my graphs before EQ, Mains averaged:
Text Line Blue Plot Pattern


After EQ, Mains averaged.
Text Line Blue Plot Pattern


Here are the filters I am using at present:

Left Main
Freq Q DB
67 5.1 -10.2
98 3.0 -5.0
161 10.0 6.0
280 1.2 1.5
900 3.0 2.0


Right Main
Freq Q DB
69 4.6 -9.6
159 7.0 -5.5
186 10.0 6.0
900 3.0 2.0




As stated I am, very happy with the sound, however wonder if it may be improved by tackling the 600hz peak but looking for advice on if and how?
 

· Registered
Joined
·
55 Posts
Discussion Starter · #3 ·
Hi Wayne

Many thanks, I have implemented your suggestions and I think things are looking better. Now I just need to have a longer listen to ensure it all sounds ok.

Mains averaged, with no filters and the Mic facing directly at the mains.
Text Line Plot Purple Pattern


Mains averaged, with the EQ in place.
Text Line Plot Pattern Purple



The filters I now have are:

Left Main
Freq Q DB
67 5.8 -9.0
99 3.0 -5.0
606 7.0 -4.0
5000 1.0 -3.0

Right Main
Freq Q DB
68 4.9 -8.0
571 7.0 -3.0
5000 1.0 -3.0

Am I correct in assuming I am seeing nearly a +/- 3db response across the mains?



PS: I know the target level has changed, but I did go through and ensure everything was correctly set-up prior to the readings.
 

· Registered
Joined
·
55 Posts
Discussion Starter · #6 ·
Hi Wayne

Yes I am not sure either, used the same position as last time.

Here are the traces of the two mains before EQ on the first measurement I posted.
Text Blue White Line Plot


And here are the two traces for the second measurements I posted, before EQ.
Text Blue White Line Plot


To me the dips look fairly simular, but on the second reading in the red trace there seems to be a boost between 250hz & 350hz, now that is very strange.


I am using the Behringer ECM8000 mic, the reduction in the 5K frequency is defiantly noticeable from a listening point of view, has helped relax the music.

Regarding the amount of roll off in the high end, I have seen this thread, do I need to me aiming for the kind of roll of I see in these graphs?

http://www.hometheatershack.com/forums/rew-forum/20748-how-i-do-full-range-equalisation.html
 

· Registered
Joined
·
55 Posts
Discussion Starter · #9 ·
Thanks for the advice.

One of my speakers is closer to a side wall than the other, which is why they may differ slightly, but not able to address there positions.

I will work on some more measurements over the next few days and post the left and right as seperate graphs.

I definantly have the mic pointing at the speakers, but only have the calibration file for the mic from this site.
 
1 - 4 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top