This post is in continuation of the below post discussing about Kii room placement and thought of creating a new thread to avoid dilution of the original post.
www.hifivision.com
The below measurements were taken from my usual listening position just near my window with both speakers playing.
As you can observe the decay plot (which is seen in all other speakers in my room), there is a huge build-up of energy around 74Hz region which does not decay easily. This is the room mode which converted to wave-length corresponds to 15.5 feet which is exactly my room length. Nothing much can be done about this unless i use very heavy foam (thicker than 4") to absorb this on one of the wall. This is not possible due to poor WAF.
There is some more clutter in the octaves of these frequencies at 150Hz, 225Hz, 350Hz, 425Hz and so on and it continues till 1150Hz. After that one more peak at 9500Hz with build up of energy which i am not able to localize to any object.
Below is the RT60 of the same mic position.
You can see the decay is as high as 5sec for the room mode which needs correction. Ironically it does not sound as bad as it measures. For other frequencies between 150Hz till 10KHz the decay is within 0.5s to 0.65s which is kind of okay and very much flat too.
So i am thinking of measuring once again at the sweet spot today evening. My sweet spot is 6 feet away from the speaker. The speakers are 6 feet away from the front wall. This gives me another 5 feet from the rear wall. Also have toed the speakers slightly inward to reduce the first reflection point. It sounds quite good at this position when checked yesterday. Need to confirm with measurements too why so.
If you check the frequency response of this speaker, then its ruler flat as below and is also a minimum phase speaker system,
Addition Note: These are measured for my OB speakers and you will typically find T60 to be relatively higher in open baffle designs. But their interaction with the side walls are minimal due to their dipole behavior.
Absolute Sound - Kii Audio Three Room
Kii Audio full setup with Kii Three + BXT Bass Modules This is at the new room setup by the D&D in Surat - looking forward to making a visit here soon. According to Jignesh the Final RT60 result of the room is very impressive. 0.45 @ 63 Hz 0.40 @ 125 Hz 0.35 @ 250 Hz 0.30 @ 500 Hz & above...
www.hifivision.com
The below measurements were taken from my usual listening position just near my window with both speakers playing.
As you can observe the decay plot (which is seen in all other speakers in my room), there is a huge build-up of energy around 74Hz region which does not decay easily. This is the room mode which converted to wave-length corresponds to 15.5 feet which is exactly my room length. Nothing much can be done about this unless i use very heavy foam (thicker than 4") to absorb this on one of the wall. This is not possible due to poor WAF.
There is some more clutter in the octaves of these frequencies at 150Hz, 225Hz, 350Hz, 425Hz and so on and it continues till 1150Hz. After that one more peak at 9500Hz with build up of energy which i am not able to localize to any object.
Below is the RT60 of the same mic position.
You can see the decay is as high as 5sec for the room mode which needs correction. Ironically it does not sound as bad as it measures. For other frequencies between 150Hz till 10KHz the decay is within 0.5s to 0.65s which is kind of okay and very much flat too.
So i am thinking of measuring once again at the sweet spot today evening. My sweet spot is 6 feet away from the speaker. The speakers are 6 feet away from the front wall. This gives me another 5 feet from the rear wall. Also have toed the speakers slightly inward to reduce the first reflection point. It sounds quite good at this position when checked yesterday. Need to confirm with measurements too why so.
If you check the frequency response of this speaker, then its ruler flat as below and is also a minimum phase speaker system,
Addition Note: These are measured for my OB speakers and you will typically find T60 to be relatively higher in open baffle designs. But their interaction with the side walls are minimal due to their dipole behavior.
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