EQ'ing a sub - noob questions - AVS Forum
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post #1 of 11 Old 03-15-2012, 09:36 AM - Thread Starter
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Hi - I've got a 7.1 setup (front heights, not rear surrounds) in a 19 x 22 room. Yamaha RX-A800 receiver - I understand YPAO does NOT EQ the sub? Sub is a Velodyne DLS-5000r.

First question - what is EQ'ing the sub?

Q2 - do I need to/should I EQ?

Q3 - since YPAO doesn't do it, I assume I would need to purchase either the SVS or Velodyne system that does it for you. Which is better? Is either worth it when you only have one sub?

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post #2 of 11 Old 03-15-2012, 09:47 AM
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All subwoofers in a listening room benefit greatly from equalization. Typically, the results aren't subtle, and the ability enjoy the system increases significantly.

This is an outstanding paper on subs and the most important aspect, the room.

Here is another decent tutorial.

Here is a fantastic series of links, many of which a superb papers you'll likely find very interesting.



Good luck

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(3)Seaton Cat12C up front, (4)QSC K8 sides/rears
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post #3 of 11 Old 03-15-2012, 10:53 AM
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Quote:
Originally Posted by AC2011 View Post

Hi - I've got a 7.1 setup (front heights, not rear surrounds) in a 19 x 22 room. Yamaha RX-A800 receiver - I understand YPAO does NOT EQ the sub? Sub is a Velodyne DLS-5000r.

First question - what is EQ'ing the sub?

Q2 - do I need to/should I EQ?

Q3 - since YPAO doesn't do it, I assume I would need to purchase either the SVS or Velodyne system that does it for you. Which is better? Is either worth it when you only have one sub?

If you go to the advance search engine, use the title search only and limit search words to one at a time....eq, calibrate etc. and make sure you highlight this forum from the list to the right....

you'll find all your questions covered in previous threads:

Here's one of them http://www.avsforum.com/avs-vb/showt...0&highlight=eq

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post #4 of 11 Old 03-15-2012, 11:14 AM
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Behringer feedback destroyers, although designed for pro audio really, work well for EQing subs since they contain parametric equalization functionality - and they can be had second hand for not much money - like $50-$100. In order to EQ though, you also need some way to measure response so you know where to EQ and how much - that means either a mic and REW software (or similar), or an SPL meter, test tones, a spreadsheet, and a lot of patience.
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post #5 of 11 Old 03-15-2012, 05:37 PM
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Quote:
Originally Posted by Brad Horstkotte View Post

Behringer feedback destroyers, although designed for pro audio really, work well for EQing subs since they contain parametric equalization functionality - and they can be had second hand for not much money - like $50-$100. In order to EQ though, you also need some way to measure response so you know where to EQ and how much - that means either a mic and REW software (or similar), or an SPL meter, test tones, a spreadsheet, and a lot of patience.

Pardon me for jumping in... can the OmniMic be used along with the Behringer or is REW the only option? Thanks for helping me understand.
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post #6 of 11 Old 03-15-2012, 07:35 PM
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OmniMic does not generate filter profiles.

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post #7 of 11 Old 03-16-2012, 07:59 AM
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Originally Posted by Kal Rubinson View Post

OmniMic does not generate filter profiles.

Please excuse my ignorace Kal... is that a "yes" or "no" to my question? Thanks.
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post #8 of 11 Old 03-16-2012, 08:04 AM
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Yes, OmniMic could be used - what Kal was pointing out I believe is that REW can measure, but you can also use it to simulate what effect specific parametric EQ settings should do to your response, and then if you have a MIDI connection between your computer and the Feedback Destroyer, you can send those filter settings to the Behringer. OmniMic can measure, but it can't do the application of the EQ, you'd have to do that by hand, and then remeasure.
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post #9 of 11 Old 03-16-2012, 11:27 AM
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Quote:
Originally Posted by elee532 View Post

Please excuse my ignorace Kal... is that a "yes" or "no" to my question? Thanks.

AFAIK, Omnimic does not generate correction filters, so you would have to calculate them from the measurements.

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post #10 of 11 Old 03-16-2012, 04:01 PM
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Thank you both for clarifying! Hope you don't mind one more follow-up... So, how difficult is it to manually configure the settings?
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post #11 of 11 Old 03-16-2012, 04:09 PM
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Another option is the AntiMode 8033. Very compentent autoEQ for a sub.

Kal Rubinson

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