Key posts: Studio build in Wales, UK...again!

Substantial posts by Paulus87, who started the thread, and by the forum’s most active contributors. 228 of 319 posts are listed.

Page 1

Paulus87, 27 January 2018Hi all, After many delays for various reasons I still have not started my studio build. But finally this year is the year I will start it! I've worked out that I need a…
Gregwor, 27 January 2018It's awesome that you have so much space to work with! A few questionable things I see are: - Your speakers are shooting across the short length of your control room. As…
Paulus87, 27 January 2018Hey Greg, thanks so much for your reply and for pointing out some things I haven't yet thought of. Yes, the live room especially needs more work, as it is too square...…
Paulus87, 2 February 2018So I've done a complete redesign: Forwards facing control room, longer than wider, based roughly on a Sepmeyer ratio. Lots of space at the rear and ceiling for bass…
Gregwor, 2 February 2018I just drew this up for you to show you how you will have to do your two leaf system properly. I hope this helps. It's not the perfect dimensions as you didn't include…
Paulus87, 2 February 2018Greg thanks so much for taking the time to do that for me, it's fantastic! Very kind of you. I did originally draw up my design very similar to this with two doors for…
Gregwor, 3 February 2018Here, I've removed the one wall in the hallway, Yes, you could do this and still have isolation between all of the rooms. However, when it comes time to finish the…
Paulus87, 3 February 2018So, I think it's important for me to say that I'll have to build this whole studio in stages. Right now what will be the C.R. structure is basically built. It's an old…
Gregwor, 3 February 2018I totally understand. With your dimensions (somewhat close to my own) for your control room, your front acoustic wall will probably be far enough back to accommodate…
Paulus87, 4 February 2018Okay... i've played around with the idea of keeping the wrap around glass but also fitting flush mounted monitors. (see attached) It's not easy because of the small…
Gregwor, 4 February 2018Well, your drawing sure looks cool anyway! Try putting your head at the recommended ~38% depth within the room (from the inner leaf drywall). And instead of angling the…
Gregwor, 4 February 2018I'm still in the design stage like yourself actually! Obviously I'm a bit further along than you, but still scratching my head problem solving haha I'm just sharing any…
Paulus87, 5 February 2018Look forward to seeing it :D Been playing around with my room again. If I am going to flush mount the monitors then I want to use some that are fairly hefty, something…
Gregwor, 6 February 2018You're certainly on the right track here! You answered your own question in your post: I think those are your 3 options. Things I thought of while reading your post…
Paulus87, 7 February 2018So, I've made a layout which has total isolation between all the rooms (except the hallway) and included all of the windows and doors that I could possibly want... it's…
Gregwor, 7 February 2018I'm really enjoying seeing your progress! I agree that the double door situation will probably not work out. You can custom build doors. You can make a 4' wide door that…
Paulus87, 7 February 2018Hey Greg, thanks for your continued support. haha sliding doors, as soon as I uploaded my last reply I looked at my design and thought the same! So that most recent…
Gregwor, 7 February 2018I assure you, it's my absolute pleasure. This answer will tie in with my next answer. Your front wall can be straight, but your acoustic treatment wall can stick out…
Paulus87, 7 February 2018Hey thanks for taking the time to clear that up for me, I see what you mean now though I struggle to see why doing it like that is better than bringing the front wall in…
Gregwor, 7 February 2018Four reasons to do it the way I suggested: 1. Maintaining a rectangular room will allow you to actually calculate acoustic characteristics of the room. 2. Not chopping…
Paulus87, 8 February 2018That's great info, you've answered a few questions I've been wondering for years! Regarding the adhesive between the panes, I only know of studios using a type of clear…
Paulus87, 8 February 2018Also, was thinking about building my soffit out of concrete blocks. Poured concrete would be too ambitious for me, but blocks are cheap and rigid. If I didn't build it…

Page 2

Soundman2020, 8 February 2018Several issues I see, some of which you already addressed, but some not... Image not preserved: WALES-Studio Redesign-problems.png Color code: BLUE LINES: You are…
Paulus87, 8 February 2018Hi Stuart, good to have your help - your opinions are extremely valued in my books, so thank you for your help as always. I've attached my latest design which does fix…
Paulus87, 10 February 2018And here's a layout with a few additional changes. - added extra wall in the hallway - all internal walls are now using 4x2s - removed a few unnecessary windows and…
Soundman2020, 10 February 2018It all depends on what you are trying to accomplish! There are reasons for splaying walls, and reasons for splaying treatment... and even reasons for splaying both!…
Paulus87, 10 February 2018Thanks Stuart - you do not know what kind of relief approval from someone like yourself means to me! How about the room dimensions? Do they at least look OK given the…
Paulus87, 11 February 2018Hey Greg, thanks a lot for your kind words and for all your help thus far. Can you see any more improvements worth considering? Especially concerning the dimensions of…
Gregwor, 12 February 2018The only things I can suggest are to: - do ray tracing and post those pictures - build it in 3d now. Draw each stud, insulation, HVAC ducts and registers, silencer boxes…
Paulus87, 12 February 2018Cool, thanks a lot for the advice. Yeah that's my next plan of action, i've already started the framing in sketch up. I'm actually planning to use two multi-split HVAC…
Soundman2020, 13 February 2018Split systems do NOT provide fresh air, nor do they exhaust stale air! All they do is move the room air through the evaporator unit, to either cool it or heat it, then…
Paulus87, 13 February 2018Thanks for correcting me. I was actually going on what I read from Bob Owsinski here: http://bobbyowsinskiblog.com/2017/01/04 ... ditioning/ where he describes simply…
Paulus87, 13 February 2018So I've been learning about Energy Recovery Ventilation today. Would this be a good way to get fresh air into my rooms? The units themselves are not too expensive, and…
Paulus87, 22 February 2018So my new future CR has been cleared out finally after a couple of weeks of sickness, hospitals and bad weather! I've also decided on what my main monitors will be and…
Paulus87, 14 March 2018Hi guys, I'm still wondering the best way to ventilate the studio. Could I simply have an inlet and outlet fan with silencer boxes on opposite ends of each room? And…
Soundman2020, 15 March 2018That's the basic concept, yes. But you only need one fan, not two. It can be either on the inlet or the outlet: it doesn't matter too much (there are pros and cons to…
Paulus87, 19 March 2018That's great to know, thanks for clearing that up for me, I'll crack on and come up with my ventilation plans. It seems to make more sense to me to exhaust the stale air…
Paulus87, 31 March 2018Dismantling of the existing shed has begun, the roof is off and we realised it would be best to cut down a couple of massive trees that are hanging over rather high up.…
Paulus87, 2 April 2018Thank-you Stuart, that's interesting - seems there are very differing opinions else where online with many complaining about rats and mice eating through this spray…
Paulus87, 12 April 2018What an exhausting few days we've been having here. I'm incredibly lucky in that I have 12 people who are working for me as volunteers, being compensated with food,…
Paulus87, 14 April 2018Thanks for the encouragement Greg! Yes I will post as many pics as possible. I have a question for everyone following my post: We managed to dig out a few more feet in…

Page 3

Paulus87, 14 April 2018Yeah, we decided that the entrance needed to be where I had originally drawn the bathroom to be, which means there's this extra corridor now basically. I think it seems…
Gregwor, 14 April 2018I can get behind your logic. I think you should explore having your live room entry door in the middle of that wall so that you can put a bass trap in each of the…
Paulus87, 14 April 2018Thanks for the fast reply, all valid points. BTW I am not dismissing making the CR wider, it would be great I just can't come up with a good use of the hallways space if…
Paulus87, 15 April 2018Okay, but that's where I'm confused... If I put in that extra wall in the hallway then there's no longer only 2 walls... there's 3. (4 leaves if the outer wall has a…
Paulus87, 5 May 2018Since my last post I've been in a lot of pain in my joints and especially hands, turns out it's inflammatory arthritis which was a bit of a shock. It means that my hands…
Paulus87, 9 May 2018Another question: If I built the large trap on the rear of my control room wall using hangers, should I measure my room length to the front of that trap or to the back…
Soundman2020, 9 May 2018It looks pretty good, but your speaker soffits aren't really big enough for that size speaker. Generally, you want your soffit to be at least three times the width of…
Soundman2020, 9 May 2018Each soffit, as compared to each speaker. So if the woofer is 12", then the baffle on the soffit that holds the speaker should be about 3 feet wide. Ideally, of course.…
Soundman2020, 9 May 2018Probably 60", yes, but it depends on the speaker. For example, some Adam speakers and some of their competitors from Eve use a pair of smallish woofers at opposite ends…
Paulus87, 10 May 2018Just wrote a really detailed reply and then lost it all! Never mind here's a summary... Okay thats cool, so how about something like this? I couldn't get a true RFZ with…
Paulus87, 17 May 2018Another question: I've been measuring the length of my room from the rear wall to the window on the front wall, which is actually sticking out from the inner wall into…
Soundman2020, 17 May 2018What "acoustic wall" are we talking about here? There's only one wall at the front of your room: the hard, solid, massive, rigid surface of the inner-leaf that you see…
Paulus87, 17 May 2018Thank-you Stuart. What I mean is, there is the wall behind the speaker soffit which is the front wall, but I'm talking about where the window is (looking into the live…
Paulus87, 18 May 2018Hopefully this will make it a little clearer as to what I'm going on about! Green = Wall Red = Window Should I measure the length of my room from the red or the green? I…
Soundman2020, 19 May 2018As I said: the walls. In other words, the green in your diagram. The window will have a minor effect, since it is only a small part of the total surface area of that…
Paulus87, 21 May 2018Thank-you Stuart. Yes, as I'm sure you're aware trying to juggle the 38% rule with the 3x width of the driver for the soffit rule while maintaining a good ratio, correct…
Paulus87, 27 May 2018I'm also wondering about the side walls. As I'll be building the whole control room inside out, how likely is it that i'll need to add treatment to the side walls or…
Soundman2020, 28 May 2018Yup! But there's one item you might not be aware of: The "equilateral triangle" thing is not strictly true. You do NOT need to have the angle of the speaker acoustic…
Paulus87, 28 May 2018Thank-you Stuart, I have briefly read that thread before yes but need to get around to reading it in full. Loads of great information in there and most of it will…
Soundman2020, 28 May 2018It's actually not that obvious at all! And it does need some head scratching at first... until you change your point of view, and get that "Eureka" moment... :) It fools…

Page 4

Paulus87, 28 May 2018Thank-you Stuart for that excellent information, you've answered questions I've been pondering for a very long time! I now understand that under the right circumstances…
Paulus87, 6 June 2018I've been scavenging all sorts of goodies for the build - lots of massive windows and frames, some of them will be usable others will come in handy in the non recording…
Paulus87, 10 June 2018Yet another control room floor plan update. H 10'10" x W 19'5" x L 23'8" It meets the Bonello criterion, it's on the edge of the bolt area, listening position is at…
Paulus87, 12 June 2018Picked up the fluffy insulation today, when we arrived the lady had even more than she realised so I ended up with over 30 rolls for £125. I thought we were going to…
Paulus87, 16 June 2018Hi guys, I could really do with some advice if any of you have a few moments spare. I've attached 3 different floor plans for my control room, each one has its own…
Soundman2020, 17 June 2018I really wouldn't do that, to be very honest. There are very good reasons for not tilting your front wall. To start with, that implies raising your speakers up higher so…
Paulus87, 19 June 2018Thanks Stuart! while responding to your response I realised one thing I had not accounted for is the speaker coverage angle! So I think I need to understand that better…
Soundman2020, 19 June 2018Right, but speaker dispersion is not a hard-edged "cone". It's a very blurry, soft edge, and it is different vertically and horizontally. Higher frequencies are…
Paulus87, 19 June 2018Thanks Stuart, those charts are great to see, very interesting how complicated it can get. I knew that dispersion would get bigger and bigger the lower down the…
Paulus87, 21 June 2018I completely agree with you, it would be a lot harder to do. There's a couple of reasons why I would need to angle them if I went with this design though: It would make…
Soundman2020, 21 June 20181) Keep the couch far enough in front of the diffuser that it won't have too much of an effect (in other words, good distance between couch and diffuser: move the couch…
Paulus87, 22 June 2018Thank-you Stuart. Yes I have had a good look at Studio 3 but can't remember seeing a floor plan? I would love to see one if you have it? Okay, I have had a real good…
Soundman2020, 16 August 2018That looks pretty good, yes. If you did the ray-tracing and it all works out to a decent reflection free zone, then all is well! However, that's only the horizontal plan…
Paulus87, 21 November 2018Thank-you Stuart for your reply. It's been a little while since I've posted an update so here's a big one for you all. We have a structure up! without boring you all…
Paulus87, 22 November 2018Hey Greg! Good to hear from you, thanks so much for your help all the way through my thread so far it means a lot to me. I haven't checked out your build diary since the…
Gregwor, 23 November 2018I'm doing my best to help people out where I can! I haven't updated my thread in a while. I just updated it. My brother had his subfloor exposed for about a month of…
Paulus87, 3 December 2018Thanks Greg, some good ideas there. While I continue my research on preventing moisture build up I have another question regarding the new concrete slab that will be…
Paulus87, 3 December 2018You’ve understood correctly, and the reason for this is because as I explained earlier in my thread the original slab is very rough, it was never done properly as the…
Soundman2020, 4 December 2018Does it need to be insulated? I'm not familiar with the climate where you live, but if you don't have a problem with extreme cold such that the ground freezes deep down…
Paulus87, 4 December 2018Thank-you Greg and Stuart, really appreciate your replies. Sorry for my rubbish quoting skills in this forum, I haven't quite put the time in to learning how to do it…

Page 5

Paulus87, 16 December 2018The next step after the new slab goes in will be beefing up the walls and framing out the treatment walls, ceiling, and front wall. I've attached an image of my monitors…
Gregwor, 17 December 2018To answer your question, here is a copy/paste from a post Stuart replied to at one point: 1) The speakers should not go in the corner, nor on the line that divides the…
Paulus87, 17 December 2018Hi Greg thanks for your reply. The speakers are made by Quested, they are custom made and yes I will definitely be using them. For what it's worth, I also enjoy using…
Soundman2020, 17 December 2018What you are actually battling with here, is the baffle step response issue. The "baffle step" refers to the point in the spectrum where the front baffle of your speaker…
Paulus87, 18 December 2018Wow, that's what I call an answer to a question! Thank-you for my early Christmas present Stuart, very generous of you :D I now know not only the 'how' but also the…
Soundman2020, 18 December 2018That's the most important point! If you know the "why", then you can make more intelligent decisions about your build, rather than just following a recipe blindly.…
Paulus87, 19 December 2018Okay, got it! Thanks a lot for clearing that up for me, I’ll tweak my current design with those thoughts in mind and see if I can get my baffles. On a different note, I…
Paulus87, 21 December 2018I have another related question, I've used the search function but cannot find exactly what I'm looking for: Would a beefed up wall perform slightly worse/better/the…
Gregwor, 21 December 2018I haven't and am not sure how the board would hold up without siding. I think you answered your own question here: ---Conventional--- Pros: - Easy to build. - Larger gap…
Paulus87, 21 December 2018Thanks Greg, you’ve confirmed my thinking. If I do decide to beef up instead of use cement board then that’s exactly what I will do anyway, use a baton that frames the…
Soundman2020, 21 December 2018Your other comments are spot on, but this is one that comes up occasionally, and needs clarifying. The absolute density if drywall is around 680 kg/m3 (give or take a…
Paulus87, 21 December 2018So if I’ve understood correctly, a beefed up wall will perform better than a conventionally built wall the same materials, despite the sheets being cut smaller to fit…
Soundman2020, 21 December 2018You are thinking of the natural resonant frequency of a panel in a free field. That is not related to the MSM resonance of the wall. The only factors that affect the MSM…
Paulus87, 21 December 2018Ah I see! Okay that makes sense now. Regarding reducing the air space between the two leaves - apart from in the case of an inside out wall where you would be increasing…
Paulus87, 28 December 2018Hey Guys, hope you all had a great Christmas and enjoying the holidays! I have a question about the best way to implement inside out ceiling modules. I understand the…
Paulus87, 28 December 2018I understand that perfectly well Stuart, if you re-read my post (the one before last) you will see what I'm asking. I was asking in my post about fixing the drywall…
Paulus87, 28 December 2018I'm sorry for not explaining this very well Stuart, let's see if I can clear up what I mean... I agree it is much easier, just as it would be much easier to screw the…
Soundman2020, 28 December 2018I'm still not understanding your reasoning, and I think you still are not understanding the way an inside-out ceiling is supposed to be built, normally. You start with…
Paulus87, 28 December 2018Thanks Stuart, I completely understand how the modules are supposed to be constructed, and your descriptions and images confirmed that. The question I had was about the…
Paulus87, 22 January 2019It's about time I got round to designing my HVAC system properly. I've been putting it off because I lack so much understanding on the subject, there's a fair amount of…

Page 6

Soundman2020, 25 January 2019The overall idea is fine, but there's some details that need ironing out... 1) Remove the central baffle, directly in front of the inlet duct: it is not doing you any…
Gregwor, 25 January 2019I am exhausted right now, but I'm not understanding the issue with the Y splitter design here other than the issues your pointed out in points 1 and 2. Can someone…
Paulus87, 25 January 2019Thank-you Stuart. Okay, so something more like this? (see attached) So, as an example if I used a round 4" duct then the cross sectional area would be 12.56" is that…
Paulus87, 25 January 2019Thanks a lot Greg, yeah for sure this is a steep learning curve... just like most things in studio design! Regarding sizing the ducts and duct material, this is what I…
Gregwor, 25 January 2019I will bet my life savings that your room needs a way bigger duct than a 4" RD feeding your silencer. I didn't look to see how big your room is but you probably need an…
Soundman2020, 29 January 2019You seem to not be getting the point I was making: You need to measure the cross sectional area in SEVERAL places, and make sure that it remains reasonably constant…
Paulus87, 29 January 2019Okay, I see. I guess that's where I'm confused as though it may not be clear in my design, the width and height throughout my pathway is indeed constant. So, providing I…
Paulus87, 31 January 2019I just noticed that thread, it's very informative, thanks for sharing it! I found this written by Rod Gervais: "Fresh air supply systems have to do with the number of…
Paulus87, 6 February 2019Hi again guys, I would appreciate some help regarding the triple leaf effect. I have read the threads on here as well as the Wyle paper and though I understand some of…
Gregwor, 6 February 2019Cool to see you're finding the calculator useful! I was wanting to make a three leaf version of it sometime. I actually started on it, but it's much more daunting than a…
Paulus87, 7 February 2019Incredibly selfish... how dare you :lol: Thanks Greg, that's very good to know. I wonder, could I even expect better isolation with the concrete leaf in the middle? For…
Paulus87, 19 February 2019Excellent! The plan is to use a layer of this then a layer of 12.5mm 8kg/m2. Both of these layers will go over the 18mm OSB I have up already, so the total surface…

Page 7

Gregwor, 19 February 2019Well that is certainly beyond the scope of the calculator. Yes, how stiff your sheathing is does affect the transmission loss. Check these pictures out for clarity:…
Paulus87, 18 March 2019Thanks Greg for sharing those graphs, I actually remember a time when lead was pretty cheap and it wouldn't have been unthinkable to line the entire studio with it!…
Soundman2020, 18 March 2019That's why we build soffits and put the speakers INSIDE them! :) And it accomplishes exactly the reverse of what you are suggesting: it tightens the bass into clean,…
Paulus87, 18 March 2019Thank-you Stuart. The thing is, when I look at John's designs as well as designs from other notable designers the RFZ seem to only work with monitors that have a very…
Soundman2020, 18 March 2019I'm not sure why you got that impression! The speakers in the Studio Three Productions control room are Eve Audio SC-407's, which use the AMT type tweeter: it has VERY…
Paulus87, 18 March 2019Thank-you both Stuart and Andre, it is a privilege to be continuously learning. Thanks to a combination of your answers and after actually reading the official…
AVare, 18 March 2019Why? You are getting into a dead end. Read the linked BBC RD document. I suggest you save the RD/PUBS URL as it is a goldmine of data.…
Soundman2020, 18 March 2019I'd suggest that you look into the science of pscyho-acoustics a bit, to understand how our ears and brains actually interpret sounds, and why those documents mention…
Paulus87, 18 March 2019Andre and Stuart, Thank-you both for taking the time to read through my queries, It seems we are now all in agreement and I am no longer confused. The whole reason I was…
Paulus87, 11 April 2019Have you guys already seen this new article written by Ethan? http://ethanwiner.com/speaker_isolation ... 0_lCKO2Udk Both he and John Brandt agree that speaker isolation…
Paulus87, 12 April 2019A bad back and a hernia? The article mentions products designed to be put under small “near field” monitors, which is what the average reader is most likely to have.…
Soundman2020, 12 April 2019Here's a simple thought experiment (Einstein loved those "thought experiments, I hear!), but you can also do this one in real life. Get out your favorite studio monitor,…
Paulus87, 12 April 2019Thanks Stuart. The facebook thread has comments from both John and Ethan stating that isolation is also NOT necessary for flush mounting. The quote in my post above was…
Paulus87, 24 May 2019Progress has been slow lately due to some family problems taking priority, but I have managed to put my wiring troughs in. They're constructed from a re-purposed…

Page 8

Paulus87, 31 August 2019Hi guys, To all those of you who are more experienced, I have a question regarding the BBC R. Walker "No integer multiple within 5% rule" when it comes to vaulted…
Soundman2020, 1 September 2019Room ratios only apply to rectangular rooms. To a lesser extent, they can be useful in providing some info about rooms that are not quite rectangular, such as when a…
Paulus87, 8 December 2019Hey guys, What do you guys think about turning my rear inside out wall into a massive membrane trap? I'd have to shoot the room and see if it's needed and at what…
Waka, 12 December 2019Hi Paulus, Have you got a problem you're trying to treat with a membrane absorber, or is it hypothetical? The reason I'm asking is because, although you have an idea for…
Waka, 12 December 2019Just to correct myself here! I misremembered what I read in a BBC paper. I have read you indeed need to "stand off" the fabric/absorption from a panel absorber to…
Waka, 13 December 2019Just to add a little more here. I've found the BBC research that shows that putting a fabric covering over the face of a helmholtz absorber, significantly reduces the…
Paulus87, 10 January 2020Hi Guys, I have a lot of pics of my progress but can't seem to upload them on here despite me trying for an hour or so! I just can't get the size and format right...…
Gregwor, 10 January 2020I can't advise how to resize on a windows computer as I'm an Apple user, however there is a super powerful free program called Gimp you could try to use to resize if…
Waka, 10 January 2020I'm not sure about this for the UK Greg. We tend to put vapour barriers on the warm side of the room (just beneath the internal plasterboard) and vapour permeable…
Gregwor, 10 January 2020Dan, I think we are saying the same thing, just differently. It's 3:30am here right now and after tomorrow I leave on a holiday to Maui for a week :yahoo: otherwise I'd…
Paulus87, 10 January 2020Hi Greg & Dan, Thanks for your input guys, I appreciate that. So I am not intending to use plastic backed fabric to be a vapour retarder, more I am just worried it will…
Gregwor, 11 January 2020:thu: I totally get your idea and working with your limitations, I think you've utilized the space well. Either: - slide the quality slider lower until it goes below…
Paulus87, 30 January 2020Hi guys, The inside is really taking shape now, I've got the main window plus the two side window frames in plus the wall/ceiling corner soffit framing done. All the…
Paulus87, 1 February 2020Hey thanks Greg, how was your vacation? yeah I agree with you - I won't be making hangers that are actually that small, I just did a quick sketch that's not to scale…
Gregwor, 2 February 2020It was amazing. Crazy to have the cold streak at home with people living in between -45°C and -50°C and then me in Maui living in between 28°C and 30°C! That's literally…
Paulus87, 4 February 2020Thanks Greg, that's brilliant. So let's go with the silencers inside the room, I think it makes it a lot easier from both a design and installation standpoint. What I…
Gregwor, 5 February 2020Paul, From what you've just shown me, the 154.48cfm looks correct for 30% fresh air. So that's what you should be basing your silencers off of. In theory, yes. You'll…

Page 9

Paulus87, 5 February 2020Ok great, so I assume I can just input some new numbers in to the equations you gave me in your previous reply? If so then I have some questions: What is the X…
Paulus87, 9 February 2020Hi Greg, Okay now that I see your diagram that makes a lot more sense, that's brilliant! So, focusing on just the inlet silencer for now, I've input some figures in to…
Gregwor, 9 February 2020Everything up to here makes sense and looks good to me! For your duct work feeding your boxes (from out size your room of course) can be estimated using this chart:…
Paulus87, 10 February 2020Hey that's great Greg, so I will get on and design some boxes now, thanks for all your help so far. Here's a quick sketch of how I'm thinking to design the inlet box. I…
Gregwor, 13 February 2020Tip from experience: design it such that the lid just sits on top to close up the box. Trying to get a nice perfectly rectangular lid to slip into the box is difficult.…
Paulus87, 13 February 2020Thanks Greg. So that is actually how I've designed it, the lid will sit on top, the lip you can see is just so the duct liner on the lid slots in place. I realise now…
Paulus87, 26 February 2020Hi guys, I finally got round to attempting to upload some older pictures from a few months ago to fill in the gaps in my build diary, hopefully this time they'll upload…
Paulus87, 28 February 2020Another picture update, this one is all about ceiling hangers. I still need to upload the pics for the ceiling soffits, windows and insulating, I'll probably get round…
Paulus87, 29 February 2020Here's some pics of the ceiling soffits I built. They're full of light fluffy for bass trapping and will be covered with fabric and some down lights will be installed.…
Paulus87, 1 March 2020And here's the pics of the rough framing for the windows. Theres 3 windows at the front of the control room. The frames here are for the cutouts while the glass itself…
Waka, 7 April 2020I've found this useful: Create the surface upright (not angled) and save it as a component, then rotate it with the rotation tool. Then when you edit the component the…
Paulus87, 9 April 2020Guys, I am having a bit of a stressful time right now after discovering what I thought was a leak in the roof! :cry: Sorry for the long read, but please read it all if…
Waka, 9 April 2020Hi Paulus, it most definitely looks like a condensation problem. When you added all that insulation you significantly increased the thermal performance in your roof. The…
Paulus87, 9 April 2020Thanks Dan... The weird thing is where I thought I found a leak it is soaking wet behind and in front of the insulation, that is only one section in the middle of the…
Waka, 9 April 2020TheIt's very possible you had a leak. But is that area right at the apex though? If so, it might be the condensation just "pooling" there. I assume you have some seams?…
Waka, 9 April 2020As an alternative temporary measure, you could add exterior thermal insulation to your roof deck (celotex or something similar) and put felt on top of that. So you would…
TomVan, 9 April 2020Paul, Hopefully you do not have a roof leak. :shock: In my studio build back in 07 it was very airtight. By the time I had put new lumber (wet), drywall and mud and…

Page 10

Paulus87, 9 April 2020Thanks so much Dan, I'm thinking that during the cold wet months we've had recently the moisture from the inside has been collecting up there and being absorbed into the…
Paulus87, 9 April 2020hi Tom, Thanks a lot for the optimism, it makes sense to me and I really hope you're right.... I do not have any drywall in there at all (so no mud) I did however use a…
Waka, 9 April 2020Not a problem! That's not how i understand it. Condensation builds up in the room due to perspiration, or because the door was open, letting damp air in and then the…
Paulus87, 10 April 2020So I do not have enough Celotex to cover the entire roof, and it is the wrong thickness anyway... I also do not have the correct type of vapour control layer... Because…
Paulus87, 11 April 2020My temporary ventilation plan would look like this: Image not preserved: gable vent 1.jpg I'd remove the insulation from the peak of the ceiling so there is continuous…
Paulus87, 12 April 2020Hey Greg, Yeah moisture has sure been a curse for both of us. It was a silly mistake on my behalf as I stupidly thought that 1. The roof deck would be kept warm if…
Gregwor, 12 April 2020My buddy who deals with mold for a living told me to just use dish soap in water to spray on the mold and then use a wire brush to remove the mold. Keep it wet as you…
Paulus87, 12 April 2020Hey Dan, I've already got some timbers running perpendicular with the side walls onto which I can secure some light weight timber frames with fabric stretched across.…
Paulus87, 29 April 2020Guys, I am currently delving in deep researching front wall flush mounting methods and typologies, I will write a post on the main 4 different approaches I can think of…
Paulus87, 3 May 2020Hi guys, While waiting for your collective wisdom pertaining to my questions in my post above, I have a more pressing question. To update you on my roof situation; I…
Paulus87, 4 May 2020I guess everyone is clueless as me when it comes to my questions then :lol: I think I'll go with a soffit vents with an equivalent of a continuous 10mm free flow air…
Gregwor, 4 May 2020Since the openings are very small, it shouldn't affect the infinite baffle concept. Only major changes in sheathing angles would mess it up. There is probably enough…
Paulus87, 4 May 2020Thanks for the reply Greg, I do have some nightmare pics haha I’ll upload them soon for your entertainment. I thought about putting up a vapour barrier but where would…
Waka, 4 May 2020It doesn't look like there's an easy to do this without having to take it down again Paul. If I were you I would staple it to the bottom of the rafters (not the rafter…
Paulus87, 4 May 2020Good ideas Dan, yes it is totally uncharted territory, I think I may even be the only person who has chosen to do it like this on the forum, I only know one other studio…
Paulus87, 5 May 2020Just to clarify I've drawn a diagram of the proposed plan. In reality, the soffit and gable vents would all act like inlet/outlet vents depending on the wind etc. The…
Paulus87, 9 May 2020What do you guys think of angling windows vertically instead of horizontally at first reflection points? For me, it could save a lot of floor space, since then I…

Page 11

Paulus87, 11 May 2020Thanks, Dan. So if I did it like this, yes I would have to completely rely on absorption in order to trap certain reflections and stop them from getting to the listening…
Waka, 12 May 2020You might be trying to get a reflection free zone this wide, but do your monitors even support the same fidelity at such an wide angle? You might avoid destructive…
Paulus87, 12 May 2020Dan, I'm enjoying this discussion, hopefully it is helping both of us to increase our knowledge of the subject, so here's a few more of my thoughts. My quested mains…
Paulus87, 14 May 2020I am really intrigued by the idea of using Homasote as part of a membrane absorber. The material itself is strange since it's classed as a structural panel but also an…
Paulus87, 16 May 2020My last couple of posts haven't sparked much interest or discussion, and I doubt this update will be overly exciting either, especially since this really isn't that…
Paulus87, 22 May 2020Update: Got the other soffit vents finished today, now I can *hopefully* get on with finishing the interior. Has anyone come up with a way to make thick treatment walls…
Paulus87, 28 May 2020Good tip Greg, I also had the idea of using a metal mesh but behind a layer of Dacron and fabric, so that it is not visible, seems about the only reasonable way of…
Paulus87, 30 May 2020Hey John, Yes it was hard to resist for the price I got it (about 10% of current market value) and I'm lucky in that an ex trident engineer lives just down the road from…
Paulus87, 3 June 2020Hi guys, I'm just playing around with a space saving concept here. Has anyone thought/done this before? After much thought about hangers, I've come to the conclusion…
DanDan, 3 June 2020Random thoughts:- The 'Sawtooth' concept pops up now and then. You can see some examples on Newell's website. They are usually big areas of slanted wall though. I don't…
Paulus87, 3 June 2020Dan, thanks for your thoughts... I should have said RFZ instead of sweet spot, or even ray free zone... A couple of ways to deal with modal resonances, the first being…
Paulus87, 6 June 2020Design concept 1 Did some more research on sawtooth designs, there's a couple of threads on gearslutz (such as this one: https://www.gearslutz.com/board/studio- ...…
Paulus87, 6 June 2020Just an update to my previous post, in reality it would probably look more like this... Image not preserved: Screenshot 2020-06-06 at 16.02.02.png I'm thinking BAD…
Paulus87, 14 June 2020So I just thought I'd mention on my thread that the improvements to Gregwor's TL calculator implemented in version 2.05 really make a huge difference to previous…
Paulus87, 16 June 2020Thanks John, glad to hear things are progressing for you, that's great news. Yes regarding the MSM calculations... it's a pain in the butt, care to share what your TL…

Page 12

Gregwor, 22 June 2020Sorry I haven't been around as much. I've been super busy doing everything other than building my studio or spending hours everyday on here. I WISH I was doing that.…
Paulus87, 23 June 2020Hey Greg, Good to hear from you again, for a minute I thought you had left the forum :D Glad to hear you're doing well despite the delays to your studio build, it's kind…
Waka, 17 July 2020Hi Paul, sorry I've been away for so long! I like the look of the saw tooth design. I was considering something similar for my design. I noticed that there was potential…
Paulus87, 17 July 2020Hey Dan, good to hear back from you again, how's everything where you are? Yes, the intention is for the inside of the teeth to be absorptive, essentially it would…
Waka, 17 July 2020It's OK here. Been crazy busy with work (I build software for dental practices) as we've been speed releasing new features to allow practices to avoid waiting rooms. We…
Paulus87, 17 July 2020Dental software, I never knew such a thing even existed! Maybe the dentists I go to are very old fashioned since they still seem to be using pen and paper :D That's cool…
Paulus87, 18 July 2020to be honest there's not a lot of info out there on this design... I do not think it was ever in the mainstream as far as I can tell. Wolfgang Jensen was the pioneer of…
Waka, 18 July 2020That's interesting info. I came to the same design myself (saw tooth) whilst designing my RFZ, it seemed as if they would work fine. Your design is an improvement on…
Paulus87, 18 July 2020You could argue that it is the most important area to have sufficient treatment due to it being directly over your mix position, it's also presumably the shortest…
Waka, 18 July 2020It is the shortest dimension yes. They are high pressure areas, but mainly only for the floor ceiling axials, my (0, 0, 1) is 69Hz or so. I'm not going to be able to fit…
Paulus87, 18 July 2020It sounds like a good plan, it's all trial and error. Just a thought - the reflective panels that you are going to put up there will have a membrane effect, whether…
Waka, 19 July 2020Indeed. I don't plan to seal them up there, I'll be leaving the sides open and stuffing behind them. That's true, but I also want to reflect quite a lot of the frequency…
Paulus87, 19 July 2020It's all good Dan, this is all relevant to my build anyway so it all helps. This is an interesting read: https://www.acousticsciences.com/art-no ... bass-traps It gives…
Waka, 23 July 2020That was an excellent read! Thanks. Yes I use that tool a lot but mainly for porous absorption calcs. I think the most difficult thing to get right about membrane traps…
Paulus87, 5 August 2020This is where I'm currently at with my room: Image not preserved: 108350614_3102809309836965_377198965538052384_n.jpg Image not preserved:…
Paulus87, 7 August 2020Hi guys, This is going to be a long post, but hopefully many of you will find the following information very interesting and useful. While contemplating my room and…
Waka, 7 August 2020What an awesome post Paul, thanks! Good thinking in reaching out to Phillip Newell! He sounds like a really nice guy, he responded quickly to a question from a reader of…
Paulus87, 7 August 2020You're welcome Dan, I thought it'd be good to share and I'm glad you found it useful. Regarding the ventilation gaps - he stated that those were only needed if mounting…
Paulus87, 7 August 2020Dan, I re-read this and realised I had misread you the first time.... for some reason I missed the word less and now it makes sense. But, I am still unclear as to why…
Waka, 9 August 2020Hi Paul, You're right, I saw the angles on your front wall and thought of RFZ. :oops: In this case I understand completely what he means. Newell is the NE room man, so I…
Paulus87, 9 August 2020Well, they look like they're going to achieve what I hope to achieve, but who knows... I am wondering how the width of each panel will affect which frequencies are…
Paulus87, 12 August 2020Any one have any insight into how a particular sound reacts to objects smaller/larger than its wavelength? I assume, in simple terms, (and, ruling out any absorption by…
Waka, 17 August 2020MHOA chapter 7 is a great source of info about this (Do you have the book?) Kind of, but it's not a simple cut off point. MHOA uses the term "acoustically small" or…

Page 13

Paulus87, 20 August 2020Thanks for the info Dan, yes I do have MHoA and I shall read over chapter 7, thanks for the tip! Regarding the diffusor, I am in two minds about whether or not I even…
DanDan, 21 August 2020Northward seem to have great engineering knowledge and skills. But that suggestion usually comes from source. Always followed by some secrecy BS which prevents…
Paulus87, 21 August 2020Hey Dan, Yeah the secrecy part of Northward's explanations are always frustrating, but understandable to a certain extent since Thomas has obviously put in a lot of time…
DanDan, 21 August 2020I asked Boggy if he would build a set of monitors for me. He explained that it was utterly impossible to ship anything out of there. BUT he would send me all build…
Paulus87, 21 August 2020Yes, I've watched and read just about everything in existence (to my knowledge) online to do with Newell and Hidley, brilliant resources, though there are a couple of…
Waka, 22 August 2020Hi Paul, in Rod's: Build it Like the Pros book his sample designs show HVAC entering a room without any silencers too. He uses long lengths of steel duct with only 2…
Paulus87, 22 August 2020Thank you both for your replies. Waka, that's so cool that your HVAC system is working silently for you, I remember reading your thread when you were going through the…
Paulus87, 22 August 2020Thank you for your comments, that’s a good point regarding the ac in the corridor, though perhaps I could use a cheaper portable ac unit there instead of a full on mini…
Paulus87, 23 August 2020That's cool that you've ventured over this way, I hope you had at least 1 day without rain? You may know more about this than me, so correct me if I'm wrong, but I…
Waka, 24 August 2020I ended up going for a simple 150mm inline fan for ventilation + a quiet mini split AC unit. I got the 150mm fan from here:…
Paulus87, 25 August 2020Cool, thank you for your thoughts - you picked up on a few things I hadn't really thought about. I was basing the idea on the exchange chamber design found in Rod's…
Paulus87, 19 September 2020Hey guys, So I've taken some baseline measurements of my room before I start putting the majority of the trapping and front wall in. The measurements are only rough,…