Monitors EQ based on amplitude response graph

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thenosboss
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Monitors EQ based on amplitude response graph

Post by thenosboss » Tue Aug 07, 2012 8:51 am

Does anybody EQ their monitors based on the published amplitude response graph...???
I tried this recently with my SP15Ms...Cut as required to get pretty close to what should be a flat response...still did a bit of ringing out after, to be sure of no feedback...
I can't say that they sounded much different than usual, but the musicians were very happy with their mixes.
Any comments on this...??? Anyone else do similar..???
Brad
Brad's Sound Company, Darwin, NT, Australia
8 x QW218, 8 x QW2F, 6 x SP15M
10 x CS4080, 3 x CS3000, 2 x CS2000, 1 x CS800x4, 1 x IPR1600
3 x VSX26, 2 x CEL-2a, 13 x QF131, 2 x PV231
32FX, 24FX, 16FX, Yamaha IM8-32
website: http://www.bradsound.com.au

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SemperFiSound
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Re: Monitors EQ based on amplitude response graph

Post by SemperFiSound » Tue Aug 07, 2012 9:12 am

Nope. Because every venue is so dang different, I start with the EQ flat and ring 'em out. I might even bump up the 1kHz to 3kHz just to see what I can get away with to keep the vox on the top.

I also have the luxury of QW monitors which are pretty darn flat to begin with...except for a slight dip from 900Hz to 1.25kHz and that little spike at 17.5kHz which I usually have everything above 15kHz knocked down anyway.

Cheers,
Steve
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Josjor
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Re: Monitors EQ based on amplitude response graph

Post by Josjor » Tue Aug 07, 2012 10:33 am

I've tried it a couple of times and didn't really notice any advantage. As Steve said, each situation is different and then you have the fact that the response chart is taken in anechoic and I believe it is without the halfspace provided by the stage. That half space will change things a lot, particularly in the low end.

Nowadays I start flat and work from there.
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Re: Monitors EQ based on amplitude response graph

Post by 1958sedwards » Tue Aug 07, 2012 3:40 pm

Brad

No I do not try to get the published response and use this as the EQ settings for the FOH or the monitors. Let's face it, every room and show is different and it is the room's acoustics that is the biggest variable. I do sometimes use a software program called "True RTA". As a real time analyser it can give me a quick setup of how the room is absorbing or overly enhancing certain frequencies. There are also good RTA apps for the iphone which can be helpful.

Steve

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Re: Monitors EQ based on amplitude response graph

Post by Josjor » Tue Aug 07, 2012 3:52 pm

1958sedwards wrote:Brad

No I do not try to get the published response and use this as the EQ settings for the FOH or the monitors. Let's face it, every room and show is different and it is the room's acoustics that is the biggest variable. I do sometimes use a software program called "True RTA". As a real time analyser it can give me a quick setup of how the room is absorbing or overly enhancing certain frequencies. There are also good RTA apps for the iphone which can be helpful.

Steve
I should have added to my response that I do use the Audiotool android app when I'm eq'ing monitors. It's pretty handy and a good supplement to the human ear, but no substitute. Still, a good app for $6 bucks with a dB meter and a means of calibrating the freq. response of your phones microphone. It also has a decay time measurement which is handy when I'm checking out venues.
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Re: Monitors EQ based on amplitude response graph

Post by SemperFiSound » Tue Aug 07, 2012 6:03 pm

Just got that Audiotool app. Time to go play with some induced feedback in the barn.
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Re: Monitors EQ based on amplitude response graph

Post by Josjor » Wed Aug 08, 2012 6:06 am

SemperFiSound wrote:Just got that Audiotool app. Time to go play with some induced feedback in the barn.

It's pretty accurate, although it does also tend to pick up the overtones in addition to the main culprit. I found it improved considerably once I calibrated the phone's microphone.
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Re: Monitors EQ based on amplitude response graph

Post by SemperFiSound » Wed Aug 08, 2012 8:32 am

Josjor wrote: I found it improved considerably once I calibrated the phone's microphone.
Need to do that.....I know my phone's mic is whack-a-doodled. (Yes, that's a valid technical term.)
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Re: Monitors EQ based on amplitude response graph

Post by 1958sedwards » Wed Aug 08, 2012 6:47 pm

Hi

The IPhone (or similar) give a reasonable depiction of what is going on. There main advantage is the ability to walk around and monitor. I mentioned the True RTA software because you can add a reference mic to your computer (I use a Peavey PVR1). The software is less than $100.00 for the full version (there are different levels to choose from) and is pretty impressive.

As others have said, these are tools to assist you but should not be consider the panacea of all problems.

What is a "whack-a-doodled"! I wish you Americans learnt how to speak English!!! :D Australians would definately use a more colourful description!!

Regards

Steve

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Re: Monitors EQ based on amplitude response graph

Post by SemperFiSound » Wed Aug 08, 2012 7:48 pm

1958sedwards wrote:What is a "whack-a-doodled"! .... Australians would definately use a more colourful description!!
Such as?

"a bit dodgey"?
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Re: Monitors EQ based on amplitude response graph

Post by Josjor » Wed Aug 08, 2012 10:52 pm

1958sedwards wrote:
As others have said, these are tools to assist you but should not be consider the panacea of all problems.
Settle it down with the fancy verbiosity there, will ya. Some of us speak only two languages: English and Bad English.

:D
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Re: Monitors EQ based on amplitude response graph

Post by thenosboss » Thu Aug 09, 2012 12:22 am

Well, 'stone the bloody crows' blokes... I only speak 'ridgi didge, fair dinkum, true blue, the full quid, and nothin' but good ole 'stralian'

Brad
Brad's Sound Company, Darwin, NT, Australia
8 x QW218, 8 x QW2F, 6 x SP15M
10 x CS4080, 3 x CS3000, 2 x CS2000, 1 x CS800x4, 1 x IPR1600
3 x VSX26, 2 x CEL-2a, 13 x QF131, 2 x PV231
32FX, 24FX, 16FX, Yamaha IM8-32
website: http://www.bradsound.com.au

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Re: Monitors EQ based on amplitude response graph

Post by SemperFiSound » Thu Aug 09, 2012 5:14 am

For good or bad...my past experiences have allowed to actually understand that ^^^.

Oh boy.
Steve
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SemperFi Sound On FaceBook
"The Art of War teaches us to rely, not upon the calculated likelihood of
the enemy's coming or not, but on our own readiness to receive him... no
matter what he does." Sun Tzu

thenosboss
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Re: Monitors EQ based on amplitude response graph

Post by thenosboss » Thu Aug 09, 2012 5:51 am

SemperFiSound wrote:For good or bad...my past experiences have allowed to actually understand that ^^^.

Oh boy.
Steve

Steve, we are straying way off the point of my original post, but..... :lol: :lol: :lol:

Brad
Brad's Sound Company, Darwin, NT, Australia
8 x QW218, 8 x QW2F, 6 x SP15M
10 x CS4080, 3 x CS3000, 2 x CS2000, 1 x CS800x4, 1 x IPR1600
3 x VSX26, 2 x CEL-2a, 13 x QF131, 2 x PV231
32FX, 24FX, 16FX, Yamaha IM8-32
website: http://www.bradsound.com.au

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