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  #1  
Old 05-01-2021, 02:06 AM
n_brio n_brio is offline
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Default bass trap and or someting more

I have now done some messurement.

with the phase 0 on the sub (purple only olympica 3)
https://www.bildtagg.se/file/225lv0y2dtfr7n77menfk7p

RT60 phase 0 on the sub
https://www.bildtagg.se/file/rne6omfkkv7w72sgva9y2zn

Waterfall phase 0 on the sub
https://www.bildtagg.se/file/9mcks6v9n1tpor6r3yudcbs

with the phase 180 on the sub (purple only olympica 3)
https://www.bildtagg.se/file/jxg35tcf7li3a9j4dnvkaq84

RT60 phase 180 on the sub
https://www.bildtagg.se/file/i1jzvrg6wcqeew30320i40qw

Waterfall phase 180 on the sub
https://www.bildtagg.se/file/6wu4sy384wenv3bh7okqn8p


would it help to add bass traps to take the edge of 40hz? And i where would i place them, in the sub corner or/and the oppisite?

what more tings do i need?
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Old 05-01-2021, 07:22 AM
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crwilli crwilli is online now
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As mentioned before, absorbing sound at 40Hz is extremely difficult. This article brings that point home.

https://www.acousticfields.com/how-d...-a-small-room/

I would suggest the addition of an external active crossover. Then you could set the high pass filter above 40Hz on your main speakers and locate your sub(s) in the room to minimize their resonance at 49 Hz. I have used a McIntosh MEN220 to good effect in an old system and now use a JL Audio CR-1 in my current system.

As an aside - There is little point in setting REW to sweep below 20Hz. What ever data you are seeing there is useless.
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Old 05-01-2021, 07:42 AM
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More fun reading.

http://www.moultonlabs.com/more/taming_the_big_wave/
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Esoteric Grandioso C1X Solo preamp, Bricasti M21 DAC/PRE & M32 Mono Amplifiers, Antipodes Kala K-50 Server with 2 X 4TB internal SSD
Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Alpha NR v2 PCs, Defender, ADDPowr Wizard, 4 X 20 AMP lines
Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables,
Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches with fiber in between powered with Keces P3 LPSU,
Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs,
Other: GIK & Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three dedicated 20 Amp lines w/Furutech GTX - Gold outlets, Adona 5 Shelf rack, Roon sometimes running self made convolution filters
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Old 09-22-2021, 10:37 AM
ACHiPo ACHiPo is offline
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Quote:
Originally Posted by crwilli View Post
This is a really good article. Thanks for posting!
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