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post #51 of 191 Old 08-27-08, 03:24 AM
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Re: REW Noob

If your mains are on then the target shape should be full range - basically a flat line plus whatever house curve response you are targeting, if any. The target response that rolls off at the high end is only appropriate when you are measuring with the mains off and the sub crossover filter is active, it then shows what the ideal response would be. Once the mains are added in your ideal is for everything to be flat, so that is the target response you want REW to aim for when applying filters.
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post #52 of 191 Old 08-27-08, 08:22 AM Thread Starter
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Re: REW Noob

Well I read the house curve section again. I used REW to play a sine wave at 80Hz and had a spl reading of 74dB. I then had REW play a 32Hz sine wave and had a spl reading of 73dB. If I play a 100Hz wave, the reading only goes to 75dB. Am I understanding correctly that I do not need much of a curve?
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post #53 of 191 Old 08-27-08, 08:40 AM
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Re: REW Noob

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play a 32Hz sine wave and had a spl reading of 73dB. If I play a 100Hz wave, the reading only goes to 75dB. Am I understanding correctly that I do not need much of a curve?
You may have missed the point. You measured basically the same level at 32Hz and 100Hz - now, how did you perceive it?

From the house curve article you read, it says:

a house curve is perceived flat response as opposed to measured flat response.

It then says:

After your subís response is reasonably smooth, play a couple of sine wave test tones, one at 100 Hz (or whatever your subís crossover frequency is), the other at about 32 Hz. (Naturally, you donít want either of these to be in a null - shift your test tone up or down if you have to.) With measured flat response (or a less-than-optimal house curve), the 100 Hz tone will sound louder than the 32 Hz tone. If thatís what you find, your subís response needs to be adjusted so that both test tones sound like theyíre the same volume level. Yes, thatís a highly subjective evaluation, but remember a house curve is perceived flat response Ė that is, it sounds flat, not measures flat.

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post #54 of 191 Old 08-27-08, 09:47 AM Thread Starter
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Re: REW Noob

Ok, maybe this time I got it. I relistened to the two tones and adjusted the volume to see about a 5dB difference. I then created a house curve of 80 0.0 and then 30 5.0. I adjusted my target to 75dB and loaded the house curve.

Once loaded, I applied 1/3 octive smoothing and had REW find the peaks from 20-80Hz and create filters. After optimize PK and adjust PK, I reviewed the filters. REW only created one filter (@ 49Hz). I added a second to boost the 23-31Hz range. So the filters look something like this....

1. PA 49.00 -9 12 for 13.9Hz
2. PA 26.62 +6 17 for 10.7Hz

Am I on the right track now?
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Last edited by weverb; 08-27-08 at 02:22 PM.
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post #55 of 191 Old 08-27-08, 12:13 PM
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Re: REW Noob

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Am I on the right track now?
Looks pretty good..........

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post #56 of 191 Old 08-27-08, 12:26 PM Thread Starter
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Re: REW Noob

Thanks for all your help brucek !

Anything else I could do to improve? I finally have a Behringer DSP1124P on the way. Now to just until it gets here.
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post #57 of 191 Old 08-27-08, 04:31 PM
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Re: REW Noob


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weverb wrote: View Post
Once loaded, I applied 1/3 octive smoothing and had REW find the peaks from 20-80Hz and create filters. After optimize PK and adjust PK, I reviewed the filters. REW only created one filter (@ 49Hz). I added a second to boost the 23-31Hz range. So the filters look something like this....

1. PA 49.00 -9 12 for 13.9Hz
2. PA 26.62 +6 17 for 10.7Hz

Am I on the right track now?


Yes, but the idea is for equalized response to track the house curve Target. Another filter centered between 60-70 Hz ought to do it...

Regards,
Wayne



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post #58 of 191 Old 08-27-08, 04:46 PM
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Re: REW Noob

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weverb wrote: View Post
I finally have a Behringer DSP1124P on the way. Now to just until it gets here.

, Thank you for sticking with it, weverb. I learned so much from this discussion.

Line up your demo scenes and music tracks.

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post #59 of 191 Old 08-27-08, 06:56 PM Thread Starter
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Re: REW Noob

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, Thank you for sticking with it, weverb. I learned so much from this discussion.

Line up your demo scenes and music tracks.

Larry
I already started today! I am not sure if the slight feeling of nausea is from not eating or too much bass!
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post #60 of 191 Old 08-27-08, 07:01 PM Thread Starter
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Re: REW Noob

Thanks to Wayne's suggestions....

1. PA 26.62 +6 17 for 10.7Hz.
2. PA 49.00 -9 12 for 13.9Hz.
3. PA 66.4 -5 9 for 14.1Hz.

Results in..
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