Key posts: Project studio/music room - construction phase

Substantial posts by kominak, who started the thread, and by the forum’s most active contributors. 52 of 71 posts are listed.

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kominak, 17 April 2018Hello, after a year-long pause I got back to work on my small studio room and I decided to write a diary as I progress to keep me on track. Design has been discussed…
kominak, 17 April 2018Hey Greg, I don't have the pictures of the insides of the silencers, but I updated my first post to include the link to the sketchup design - the silencers were made…
Soundman2020, 17 April 2018That was a rather complicated design, due to the restrictions imposed by the existing structure, and also the climate.... Note where Martin lives... :) It took me quite…
kominak, 20 April 2018Hello, does anybody know the optimal weight load per square inch of 50 duro sorbothane in 1/4" thickness (or similar, suitable for soffit mounted speakers) that will get…
kominak, 24 May 2018Logging some small progress - the soffit frame is almost done and the speaker boxes are finished. I'm waiting for the speakers to arrive (should be any day now). I'll…
kominak, 6 June 2018Speakers finally arrrived :D Here they are temporarily installed to make some initial audio measurements of the room: Image not preserved: studio4_stiched_smallsize2.jpg…
Soundman2020, 6 June 2018Then you didn't build the enclosure boxes correctly! You'll find it next to impossible to slide anything on Sorbothane, and then find it even more impossible to adjust…
kominak, 6 June 2018Oh Stuart, you really know how to spoil the fun :( Just kidding - you know how much I value your input! :D I was expecting much worse, actually - going through your post…
Soundman2020, 7 June 2018What speakers are those? (Make, model) Are you planning to use a sub as well? You have your resonant frequency rather high for the rubber pad calculations: 31 Hz implies…
Soundman2020, 7 June 2018Added later: There's a major issue with all of your measurements. You have very severe mains hum interference: Image not preserved: Martin-REW--WF-50hz-hum.png That huge…
kominak, 7 June 2018ATC HTS40 - they are from their HiFi line, but ATC uses the same drivers/crossovers in both their Pro and HiFi speakers (HTS40 uses the same drivers as SCM25 and SCM45).…
Soundman2020, 7 June 2018That's what I thought. OK, specs say they go down to 32 Hz, and REW agrees: It's showing -6 dB at 32 Hz, which is exactly on spec. So that's what you should set your…
kominak, 8 June 2018Rebuilding the hangers took longer than expected, so no new measurements today... The hangers are much lighter in weight and somewhat more "springy". I think I get it…
Soundman2020, 8 June 2018:thu: You will be placing pads ABOVE the speaker? Between the top surface of the speaker and the upper panel of the enclosure box? They will be exerting some pressure…
kominak, 12 June 2018I spent 2 days deconstructing everything and then trying to get the speakers mounted corectly on sorbothane pads. I'm still not 100% sure I got it right but at least…
kominak, 3 July 2018The soffit wall is almost completed - only fabric frames are missing, they will hide the mineral wool that's still showing: Image not preserved:…
kominak, 4 July 2018In the meantime I was thinking about ceiling and this simple idea looks promising (cross section of the ceiling): Image not preserved: ceiling_plan.png The angled 4"…
Soundman2020, 4 July 2018Just checking here, but you did leave ventilation slots in your speaker enclosure box, right? You do have a deep, clear air path up behind the speaker itself, inside the…
kominak, 5 July 2018Many thanks, Stuart, your input is greatly appreciated! Yes, I did, no worries here. That's so good to hear! It was a lot of work so I'm happy it was worth it :) Will do…
kominak, 10 July 2018Just finished the absorptive back wall with 45cm of mineral wool: Image not preserved: back_wall_stitch_small_color.jpg The measurements are here: Back wall Comparing…
kominak, 11 July 2018Thank you for your kind words! I'm enjoing the build very much - especially now, when the results start showing. I'm no expert in interpretation of the graphs from REW,…
kominak, 13 July 2018I spent some time playing with raytracer plugin in sketchup. It seems that due to limited height of the room I'll be forced to make the hard backed cloud using 3…

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kominak, 14 July 2018+1 Many thanks, Stuart! That's exactly what I was struggling with - how close to the middle part of the soffit (which is even more up front than the speakers on both…
kominak, 18 July 2018After placing the cloud 20cm futher back into the room (away from the soffit) I was able to simplify it a bit: Image not preserved: cloud_raytrace2.png I still wasn't…
kominak, 18 July 2018Yesterday I finished the rough work on "wings" - those constructs on both sides of the soffit that help to create RFZ zone in the mixing position: Image not preserved:…
kominak, 1 August 2018Small progress here - I finished bass traps in the wal/ceiling corners plus absorbtion layer in the middle part of the celing. The area where the hard backed cloud will…
kominak, 2 August 2018Here's the unsmoothed low end of the spectrum: Image not preserved: waterfall_ceiling_lowend_unsmoothed.png And here's the whole spectrum: Image not preserved:…
kominak, 3 August 2018Hm, that's strange. Here are my (default) settings: Image not preserved: spectogram_settings.png I still don't quite understand this. If this should show the RT60,…
Soundman2020, 3 August 2018You shouldn't use the spectrogram for measuring decay times. The RT-60 graph is meant for that. The spectrogram is usueful for pinpointing modal issues and SBIR, as well…
kominak, 4 August 2018Great insight, as always - many thanks Stuart! I still have to finish the overhead cloud, but once that is done, I'll work on the side walls. I'll be interested in…
kominak, 26 August 2018The overhead cloud is done: Image not preserved: overhead_cloud_stiched_small.jpg The middle part between the studs is hard backed(18mm plywood with 10cm thick mineral…
kominak, 2 September 2018I spent some time pondering on ideas for side wall treatment and I think I need to make some small adjustments. Here's the look of the side wall at the moment: Image not…
Soundman2020, 5 September 2018:thu: :thu: That's fine. It's always good to keep the room symmetrical if you can, even behind the mix position. In front of the mix position is critically important,…
kominak, 5 September 2018Oh, I knew I should have waited! I already finished the diffusers this morning :( In the end I found out that the plywood is flexible in the other direction than I first…
Soundman2020, 6 September 2018:) :thu: I was sort of hoping that would be the case! I expected that: That's why I mentioned adding the random slats in the other post. You might need that, but wait…
kominak, 6 September 2018:yahoo: That was one amazing post, thank you so much, Stuart - you just made my day :D . Especially that you took the time to analyze my data and explained in detail…
kominak, 11 September 2018The floor is done: Image not preserved: floor_stiched_small.jpg Hard to see from the photo, but it turned out really nice, the room even feels bigger somehow. It was my…
kominak, 16 September 2018I realized that I'm not quite sure yet of how will my workflow look like in this new room. Will I be only recording myself or will others singers/songwriters, narrators…

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kominak, 17 September 2018Thank you for your kind words, Greg! I was thinking about the screens that would be sunk into the desk, but finally I liked the idea of one big 4k screen more - there…
Gregwor, 17 September 2018Yeah, and 8k is around the corner too. I personally just hate looking up at my screens/televisions. We are all trying to keep up with the technological advancements of…
kominak, 5 October 2018My new job got in the way of my studio build, so not much to report, but here are the measurements after I placed the desk in the room and after I built one more big…
Soundman2020, 5 October 2018Cool! More data to play with! :) :thu: OK, firstly, you need to smooth your data. You are looking at it unsmoothed, but that produces graphs that are way, way overboard…
kominak, 6 October 2018It's so good to read a quote like this, Stuart - it shows you really love your work :D . Many thanks for pointing out those early reflection that both you and Greg wrote…
Soundman2020, 6 October 2018Ahh, yes, well, ... but are they TRUE poly curves, like I showed before? :) viewtopic.php?f=10&t=21539&start=42 What you are experiencing are specular reflections, so…
kominak, 7 October 2018With a bit of luck I found out where the problem was - some thin ray of sound found its way through the cutout in the left side of the desk, bounced of the floor,…
Soundman2020, 7 October 2018Great! Glad you found it. It had to be the desk. Absolutely! Always! With all speakers! There's a parameter called "directivity" or "dispersion" to consider: Speakers…
kominak, 8 October 2018Today I was trying to catch the reflection that is causing this behavior and I thought I was going to get crazy for a moment. I made like 20 measurements, tried…
kominak, 12 October 2018I tried this with some quarter-round planks, that I glued together to form half rounds (4.5cm wide, 2.2cm deep). Here's the result: BEFORE: Image not preserved:…
kominak, 21 February 2019I see the total count of the views is closing on 10.000 and I haven’t updated the status in a while. The progress slowed down a little as I had to go back to work after…
kominak, 21 February 2019In the meantime I started to work with Stuart on the digital tuning, as he agreed the room was treated well enough / was ready for this next step. I wanted to process…
kominak, 12 April 2019This has been one fast ride! For the last one and half month Stuart and I worked on the digital tuning of this small room. We exchanged emails almost daily, sometimes…
kominak, 1 May 2019The tuning process is finished, so I'd like to share some graphs to show how this whole adventure ended (this is excerpt from Stuart's mail, he might want to chime in…