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 Post subject: Re: Tiny All-In-One room
PostPosted: Fri Jan 22, 2021 4:39 am 
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Location: Greece
Thanks Mattsal,
Things have slow down a little construction wise, the truth is... the hangers core varies from 210x15 to 210x62 (in centimetres) the on-hanger insulation is 4,5cm but is a bit fluffy and in reality is 5-6cm per side.The on-wall insulation is said to be 9cm but is over 11, respectively. The total depth of the frame is 60cm.

dio


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 Post subject: Re: Tiny All-In-One room
PostPosted: Sun Jan 24, 2021 10:54 pm 
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Joined: Thu Jan 02, 2020 10:26 am
Posts: 13
Location: Greece
Minor Sunday update: finished the absorptive door with 20cm of Knauf Ultracoustic insulation (≥5000 kPa.s/m²) and now (keeping in mind that the door does not isolate perfectly) the back wall is considered as an acoustic "black hole" .
Attachment:
IMG_3055.jpeg

Attachment:
IMG_3071.jpeg


mdat:
https://mega.nz/file/Rk1UXJqT#9vP9Q4Vwy ... mQIZ0utRSY

Screenshots:
As expected there are only minor changes, mostly visible in the reflections diagram (ir).
Attachment:
Dio Ministudio hangers + door wtrl.jpg


Attachment:
Dio Ministudio hangers + door spctr.jpg


Attachment:
Dio Ministudio hangers + door RT60.jpg


Attachment:
Dio Ministudio hangers + door ir.jpg


Attachment:
Dio Ministudio hangers + door fr.jpg


Here is the comparison between the previous situation (hangers only) and the added door insulation. Some strange behaviour in the mids I believe is from the various stuff that is still in the room and should be ignored:
Attachment:
Dio Ministudio hangers - hangers + door RT60 compare.jpg

Attachment:
Dio Ministudio hangers - hangers + door ir compare.jpg


Not big differences but certainly listenable. Music is more "focused" and clean now, details have appeared even in very low volumes, and high volumes are now tolerable..

And now two questions:
1) Planning the final layout many different configurations have passed though my sketchup and I ended up that the safest one for my limited space is with absorbent reflection points (30cm insulation) and full absorbent ceiling (30cm insulation), see previous post. I keep reading that insulation alone will not suppress the early reflections enough end the proper way is to redirect them, something that I am unsure if I can accomplish in this room. Will I gain anything noticeable if I embed hard reflective surfaces inside the insulation on the reflection points?

2) Seeking a way to tame the 42hz standing wave I am planning on using slot resonators in the above and below soffit sections. An also ideal place for a low tuned resonator seems to be the outer part of the soffit:
Attachment:
Dio Ministudio slats soffits 1.jpg


will the resonator be effective being so close to the side wall insulation? How big the gap has to be? Are there other options?
Attachment:
Dio Ministudio slats soffits 2.jpg


Thanks,
Dio


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 Post subject: Re: Tiny All-In-One room
PostPosted: Mon Jan 25, 2021 1:51 am 
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Joined: Wed Jul 13, 2005 3:55 am
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Location: Old Tappan, NJ USA
it's LF (42hz) so the proximity of the side wall to the resonator shouldn't be a problem.

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 Post subject: Re: Tiny All-In-One room
PostPosted: Mon Jan 25, 2021 3:06 am 
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Thanks Glenn, actually the gap I was wondering about is this:
Attachment:
Dio Ministudio slats soffits 3.jpg

If the insulation being so close to the resonator makes it less effective.
dio


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 Post subject: Re: Tiny All-In-One room
PostPosted: Mon Jan 25, 2021 8:49 am 
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i don't think it will be a problem :)

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