# Room Acoustic Measurements (REW) Rabbit Hole **URL:** \ **Category:** Accessories and Tweaks\ **Created:** [January 31, 2024, 6:31am UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553 "2024-01-31T06:31:24Z")\ **Posts on this page:** 20\ **Page:** 7
**Author:** ![luca.pelliccioli](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/luca.pelliccioli/32/93681_2.png) [@luca.pelliccioli](https://forum.psaudio.com/u/luca.pelliccioli)\ **Post date:** [February 3, 2024, 8:35pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/121 "2024-02-03T20:35:00Z")
Looks like we have to fight opposite issues around the same 100 Hz band. Life is strange! Good luck! ---
**Author:** ![dchang05](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/dchang05/32/294697_2.png) [@dchang05](https://forum.psaudio.com/u/dchang05)\ **Post date:** [February 3, 2024, 8:41pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/122 "2024-02-03T20:41:05Z")
Just wonder, with the better measurements how much better SQ that you hear as a result? ---
**Author:** ![tony22](https://avatars.discourse-cdn.com/v4/letter/t/f04885/32.png) [@tony22](https://forum.psaudio.com/u/tony22)\ **Post date:** [February 3, 2024, 8:41pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/123 "2024-02-03T20:41:34Z")
I made an edit after you read it, I think. You also need to run the Classical RT60 on the other tab. šŸ¤Ŗ That will populate the N/As. ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 8:45pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/124 "2024-02-03T20:45:03Z")
The speakers are tracking each other quite nicely. The valleys around 45 and 130hz must come from a room mode. You canā€™t get rid of them, only alleviate through speaker positioning, if they are bothering you. Anyway, play a bit with room simulator module in rew. You can simulate the effect of different speaker positions. ---
**Author:** ![ErVikingo](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/ervikingo/32/251111_2.png) [@ErVikingo](https://forum.psaudio.com/u/ErVikingo)\ **Post date:** [February 3, 2024, 8:46pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/125 "2024-02-03T20:46:05Z")
Spectro for each side. I see differences on right v left. I will have a look at my Servo Controller. Seems to be off balance left v right ![UpClose Left Spectro](https://us1.discourse-cdn.com/flex015/uploads/psaudio/original/3X/f/9/f92c34093566bd132efd2932e497609c4b3a3a5d.jpeg) ![UpClose Right Spectro](https://us1.discourse-cdn.com/flex015/uploads/psaudio/original/3X/1/5/1579b7964489caeebab432c9576bd4b457eab03b.jpeg) ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 8:49pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/126 "2024-02-03T20:49:17Z")
Your left speaker is a bit hotter under 100hz. In this region, the sound is very omnidirectional, so it shouldnā€™t affect soundstage or the center. If it not bothering you regarding the soundstage, I would just leave it be. I the midrange, that is the most important form sound stage stability, both speakers are doing quite fine. ---
**Author:** ![ErVikingo](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/ervikingo/32/251111_2.png) [@ErVikingo](https://forum.psaudio.com/u/ErVikingo)\ **Post date:** [February 3, 2024, 8:49pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/127 "2024-02-03T20:49:55Z")
I will try the simulation. Hope I can work it out. Hey, are these valleys something I could fill in with subs? I have subs I use on my movie setup which i could ā€œrepurposeā€. ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 8:51pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/128 "2024-02-03T20:51:13Z")
But if you really want to try, dial a low shelf, q=1, frequency =130, gain=-3dB to your left channel. You can do this easily using roon procedural EQ DSP, applying only to the left channel. ---
**Author:** ![ErVikingo](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/ervikingo/32/251111_2.png) [@ErVikingo](https://forum.psaudio.com/u/ErVikingo)\ **Post date:** [February 3, 2024, 8:51pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/129 "2024-02-03T20:51:37Z")
Soundstage is fantastic. I just struggle with level for the low frequencies (problem of having too many adjustmentsā€¦) ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 8:52pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/130 "2024-02-03T20:52:22Z")
You could simulate the effect of subwoofers in rew. You should try positioning in the middle of the room and work from there. Not an easy task. Since 100hz is quite high for a subwoofer. ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 8:52pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/131 "2024-02-03T20:52:50Z")
You feel too little bass? ---
**Author:** ![ErVikingo](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/ervikingo/32/251111_2.png) [@ErVikingo](https://forum.psaudio.com/u/ErVikingo)\ **Post date:** [February 3, 2024, 8:54pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/132 "2024-02-03T20:54:02Z")
Too much. On prior room (wider room) gain for low frequencies was quite higher (-2 db) on current room -9db. ---
**Author:** ![luca.pelliccioli](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/luca.pelliccioli/32/93681_2.png) [@luca.pelliccioli](https://forum.psaudio.com/u/luca.pelliccioli)\ **Post date:** [February 3, 2024, 8:56pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/133 "2024-02-03T20:56:45Z")
Iā€™ve done it as you can see here (but they still donā€™t appear on the window of the RT60 Model tab only in the RT60 tab) - hope you can read data from here too: ![Screenshot 2024-02-03 alle 21.51.45](https://us1.discourse-cdn.com/flex015/uploads/psaudio/original/3X/2/2/22dcd1c51b8e521a20e28f1c730f80fcf54da39d.jpeg) ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 8:57pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/134 "2024-02-03T20:57:20Z")
If too much bass, low shelf from 130hz, q=1, g=-3dB for bothe channels, and keep experimenting with the gain until the tonal balance is satisfactory. If too little, instead of low shelf, a high shelf with the same parameters, and keep experimenting with gain. Once you reach a tonal balance that is satisfactory, you will know what to adjust. Then you can move the speakers closer or farther away from the walls to get that same result. Or live with the eq and be happy! ---
**Author:** ![luca.pelliccioli](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/luca.pelliccioli/32/93681_2.png) [@luca.pelliccioli](https://forum.psaudio.com/u/luca.pelliccioli)\ **Post date:** [February 3, 2024, 9:02pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/135 "2024-02-03T21:02:46Z")
Believe me, the improvements are significantly more noticeable than the ones I got from fuses and other tweaks but never at the degree we know a glass of wine can provide, my friend (especially the champagne I uncorked this evening!) ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 3, 2024, 9:04pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/136 "2024-02-03T21:04:16Z")
Another thing you can try for too much bass is dip filter, q=2, g=-2dB, f=250hz. Tell us which one you prefer ---
**Author:** ![dchang05](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/dchang05/32/294697_2.png) [@dchang05](https://forum.psaudio.com/u/dchang05)\ **Post date:** [February 3, 2024, 9:12pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/137 "2024-02-03T21:12:27Z")
Thatā€™s a good analogy šŸ˜€ Iā€™m going to have a glass of wine soon, and forget about studying these graphs. ---
**Author:** ![ErVikingo](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/ervikingo/32/251111_2.png) [@ErVikingo](https://forum.psaudio.com/u/ErVikingo)\ **Post date:** [February 3, 2024, 10:16pm UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/138 "2024-02-03T22:16:34Z")
OK so I finally woke up and figured that my dips are where the LEMIM come in and those are on the mid/high wings. I relocated them closer to the front wall and the dips are almost gone! Thanks for the feedback! Now i have to move amp stands etc to make it all pleasing. If my movie screen was smaller, I would have more flexibility. What do you think??? ![UpClosed Moved Waterfall](https://us1.discourse-cdn.com/flex015/uploads/psaudio/original/3X/8/a/8a418ca48a2bc12c50dd8de5cd9319ee1caab4af.jpeg) ![UpClosed Moved Spectrogram](https://us1.discourse-cdn.com/flex015/uploads/psaudio/original/3X/e/3/e373268e805b2217796d78516473565a1e17f50c.jpeg) ![UpClosed Moved SPL](https://us1.discourse-cdn.com/flex015/uploads/psaudio/original/3X/9/9/99c91e9646f2359aa0a61d11054eb27252fe1cfe.jpeg) ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.psaudio.com/u/jvvita)\ **Post date:** [February 4, 2024, 2:28am UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/139 "2024-02-04T02:28:52Z")
It.seems better on the graphs. But did it solve your tonal balance (in satisfaction with the bass)? ---
**Author:** ![joma0711](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/joma0711/32/277666_2.png) [@joma0711](https://forum.psaudio.com/u/joma0711)\ **Post date:** [February 4, 2024, 2:43am UTC](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553/140 "2024-02-04T02:43:07Z")
Plus one for hoarding carp - there isnā€™t a visible floor corner, wall/floor junction, or bare wall without something leaning against it or hanging on it, anywhere in this room. I am convinced it makes a significant difference šŸ™‚ [Previous page](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553.md?page=6) [Next page](https://forum.psaudio.com/t/room-acoustic-measurements-rew-rabbit-hole/36553.md?page=8)