lars
New Member
Posts: 13
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Post by lars on Mar 2, 2020 18:50:43 GMT
Thanks Going to place a panel behind the monitor and one on the back wall as well. Do these provide any intelligible insights?
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Post by Hexspa on Mar 4, 2020 22:26:37 GMT
Kinda. You're on the right track. The first one need only go up to 300Hz and down to about 20 or even 63Hz. You're looking for 20dB decay within 150ms above 63Hz with an even taper - longer toward the low end. The second graph can help you deduce that but you need to turn off everything but the Feb 21 measurement as well as 140 and 160ms. Just look between the two delayed ones to see how far down each frequency is from the immediate SPL. If you slide the y-axis up and down with the waterfall, you can see that visually but I'd have to have the mdat to do it and I'd rather not
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lars
New Member
Posts: 13
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Post by lars on Mar 9, 2020 19:00:05 GMT
This is as good as it is going to get Installed a 45mm thick panel in front of the listening position, plus a 90mm thick panel on the empty space on the back wall. Looks like that took the edge off the the null at 150Hz, and shaved some of the 220Hz build up. Attempted to adjust the waterfall according to your description, to show 20db decay. (66-46db, 0-150ms,50-300Hz) Any new insights to be had from these? Attachments:
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Post by Hexspa on Mar 10, 2020 5:37:51 GMT
Very good, lars. Of course, there are a few bands that are a bit more resonant than others but my room has that as well. I understand when you say it's 'as good as it is going to get' but you can still make a few small tweaks with EQ.
Rather than boost at 92Hz, you can apply a notch at 60Hz - optional - and a broad scoop at around 220Hz - I recommend you at least try this one. From there you should be able to bring your SPL in line with +-10dB. Just make sure to take measurements in a reasonable radius from the center of your listening position to make sure that any EQ you apply doesn't exasperate the response of any radial position where you might place your ears. In other words, if you do a broad bell cut at 220Hz, make sure that you aren't severely augmenting a null which already exists a foot away from dead center.
Great work. I hope the improvement in sound is what you'd hoped. You should never want to listen to music in an untreated space again!
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lars
New Member
Posts: 13
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Post by lars on Mar 10, 2020 20:58:25 GMT
Thanks man. Going to work a little bit with EQ. Also using reference tracks actively. I am very grateful for the guiding Hexspa. You took me from terminal cancer to something I can happily live with Stoked on the clarity and the details I am getting. Tusen takk for the help so far! All the best
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