Substantial posts by Guit-picker, who started the thread, and by the forum’s most active contributors. 111 of 194 posts are listed.
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Guit-picker, 26 November 2014I have been asked to spearhead the building of a recording studio on our church conference center grounds in Salem, Oregon, USA. I have received “valuable” experience…
xSpace, 28 November 2014"1. Can someone help me decide how many layers of 5/8” drywall for my walls are appropriate?" To achieve the highest degree of isolation, upwards of STC 69 in an ideal…
Soundman2020, 28 November 2014Hi there "Guit-picker", and welcome! :) I wish you good luck with BOTH of those, but from many years of experience in church building projects I can pretty much assure…
Guit-picker, 1 December 2014Wow! Thanks Brien and Stuart for all your input. I made the mistake of reading your replies just before going to bed late. The ol’ brain wouldn't shut off until about…
Soundman2020, 1 December 2014:shock: Are you SURE about that? I don't know many drummers that can play that quietly! Was that some type of soft jazz number he was playing, played with wire brushes?…
xSpace, 2 December 2014"Brien, I understood from the book and on the forum that for EACH layer it is best to use backer rod and seal. Isn’t the purpose of backer rod to allow me to conserve on…
Guit-picker, 12 December 2014Sorry it took so long to get back - DON'T GIVE UP ON ME!!! I've been buried with other events and been thinking about all your input every day, wishing I could get back…
Soundman2020, 4 January 2015Actually, all those names such as "farfield" and "nearfield" are just marketing hype! In reality, there's no such thing as a nearfield speaker or a farfield speaker,…
Guit-picker, 25 January 2015Thanks for your good information Stuart! Your explanation of farfield vs nearfield is just what I wanted to hear (no pun intended)! I think I'll end up buying a new set…
Soundman2020, 2 February 2015I don't want to comment on the design for your hugely massive swing doors until I see it, but let's just say "color me skeptical" in the meantime... A really deep shade…
Guit-picker, 3 March 2015Thanks Stuart for your moral support, info and frank opinions. The swinging wall is only a concept right now. Your 30dB figure might be acceptable for our situation…
Guit-picker, 26 April 2015I must have skipped over your comment here before. I just noticed it. No worries, Stuart, we sealed the first layer before the 2nd. This was the SECOND case of SC-175 I…
Guit-picker, 26 November 2015Well, after discussions, delays, being put on hold 4 months, etc. It finally happened: I got the trusses replaced and raised the level from concrete to bottom of the…
Soundman2020, 3 December 2015So you finally did it! Excellent. I'm glad I was able to influence you to do that. It will make a big difference to your studio for sure. And it wasn't all that hard to…
Guit-picker, 3 December 2015Thanks a million, Stuart, for your input! ... a tremendous help! Not completely clear on that. I have been picturing putting up 23" R19 craft-back fiberglass between the…
Soundman2020, 4 December 2015You are going to have a three-leaf ceiling: you have no choice. The outer-leaf is already up there: the roof deck. Then you will be building the middle-leaf: "…
Guit-picker, 4 December 2015OK, I get what you mean about the "middle leaf". I wasn't counting the roof as a leaf. So it seems that you are talking about only two layers of insulation: Fiberglass…
Soundman2020, 4 December 2015Maybe you missed it, but I think I already answered that question: "You need insulation between the outer leaf and middle leaf, and you also need insulation between the…
Guit-picker, 4 December 2015Yes, please be patient with me, I don't think I'm coming across clearly with my question: Yes, this has been understood all along and has been always the intention, but…
Guit-picker, 26 April 2016Well after delays, I’ve finally gotten most of the outer mass done. The two layers of ceiling drywall are up. Just about everything is sealed with OSI-SC175. I’ve got 46…
Soundman2020, 23 June 2016The only way to tell for sure, is to do ray-tracing, to make sure the angles are large enough to create a true RFZ at the mix position. To me, it looks like your angles…
Guit-picker, 4 July 2016I went to work on the Ctrl room layout and boned up on again on RFZ by reading Rod Gervais’ book, “Home Recording Studio …”, While playing around with the side wall…
Soundman2020, 4 July 2016Yep! :) There's often really good reasons behind the things we do... and don't do! Excellent! That was an important change. In your case it doesn't really have to be…
Guit-picker, 5 July 2016Thanks for your quick come back, Stuart! I moved the speakers out another 6.5”, still focused on the same point. Now they’re 33.3 degrees. The old placing is in white on…
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Guit-picker, 5 July 2016Here is a birseye view of the floor plan "painted" on the floor and the framing, so far, of the control room. (Couldn't get the sketchup file to load. Got an error…
Soundman2020, 18 July 2016Looks fine to me, except that the axes of the speakers do not seem to be perpendicular to the front faces? Probably your axis lines are attached to each other at the old…
Guit-picker, 28 July 2016Thanks Stuart, as always, for all your comments. I've been away a bit and just noticed your reply. That's because I took off the axes lines. Those lines show the RFZ…
Guit-picker, 30 July 2016OK, you convinced me. We added another branch to the ventilation to the Vocal1 booth plan (the one to the left of the control room). The one to the right is actually an…
Guit-picker, 28 May 2018I finally was able to make the time to give an update on the studio progress. Sorry that I disappeared for about 22 months, but you wouldn’t believe the schedule I’ve…
Guit-picker, 28 May 2018Continued from last post. (I was worried about size limits with so many photos). Photo 10: After mudding, taping, texturing and paint: Image not preserved:…
Guit-picker, 31 May 2018Sounds like an echo chamber! Ha ha! I was really jazzed when the glass went in and we shut the doors (as they are at this point) and shouted as loud as possible. Pretty…
Soundman2020, 13 June 2018Porting is not an issue. It is entirely possible to soffit-mount rear-ported speakers. So don't limit your speaker choices to front-ported only. That's probably fine.…
Guit-picker, 15 June 2018Okay, that's a relief! I'm really liking the Barefoot approach, which will allow for easier speaker upgrade down the road. I've been struggling to get some good…
Soundman2020, 15 June 2018:thu: Take your time with the design: soffit design is not something you should rush. Actually, STUDIO design is not something you should rush! :) But soffits…
Gregwor, 15 June 2018I'm in the middle of designing my soffits as well. I'm trying to isolate the speaker from an enclosure with Sorbothane, then isolate that box from the wall as well. In…
Guit-picker, 4 July 2018Here is the first-step drawings of my soffit area – borrowing (stealing) from Barefoot’s method. After reading some of the other posts… … I came up with this idea of…
Soundman2020, 4 July 2018That should work quite well, actually. And definitely better than canvas straps. Finer control on the pressure, too. You'd have to do the calculations, but yeah, I…
Guit-picker, 5 July 2018Yeah, that’s the part that I’m not sure how to figure into the equation. Here’s my current thinking: I’m looking at a hemisphere that has a weight range of 5 – 10 lbs…
Gregwor, 5 July 2018The thicker the Sorbothane, the lower the frequency. Using some rectangular chunks and some trial and error, you can torque down your lid with the ready rod to achieve…
Guit-picker, 5 July 2018Thanks for the input Greg! :D Yes, that's my plan too. I'm concerned about the warnings from the factory about too much sorbothane can actually have a reverse effect.…
Guit-picker, 6 July 2018Well I figured this sticky stuff would keep the speaker from migrating around on the shelf, considering comments from others as to how hard it is to move the speaker…
Soundman2020, 6 July 2018That's the basic concept, yes. Actually, it is one of two basic concepts. The other one (which also works well) is to clamp the speaker in place so rigidly, and with so…
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Gregwor, 7 July 2018So the beautiful thing about your design is that you can torque that lid down lots and emulate having a speaker that weighs hundreds of pounds. Ultimately, this will…
Soundman2020, 7 July 2018Right! But it's probably only a major issue if the gap is large, and also if the speaker is large (moving lots of air). For smaller speakers with a smallish gap, it's…
Soundman2020, 8 July 2018I would consider adding the other three faces to your enclosure box (sides and rear) in some way that would still allow the top lid to slide up and down a bit. you do…
Guit-picker, 9 July 2018How about this? I have some 703 on hand already. Image not preserved: Baffle_fiberglass.jpg Also, I've drawn in the first draft of the baffle pieces. I got the…
Soundman2020, 9 July 2018That should work OK. Wrap it in black fabric. Underkill! :) Get as much mass as you reasonably can on the baffle. However, you do have to be careful about making it too…
Guit-picker, 10 July 2018Is 1.5" too thick in your estimation? I was figuring on a touch of black paint. It's amazing how black can make things "invisible" Image not preserved: Painted_703.jpg I…
Gregwor, 10 July 2018Paint dries hard. This will cause flanking. Do as Stuart suggested and wrap the 703 in fabric. So far, my plan is 1" OSB, then 1/8" steel, then 1" nice looking wood (or…
Guit-picker, 11 September 2018I’m back after travelling to Scandinavia and then “paying for it” with undone obligations etc upon return, BUT I HAVE been getting SOME work done in the meantime. After…
Gregwor, 19 September 2018I'm concerned about the noise created by the sliding top piece vibrating on it's "rails". Once your speaker is mounted with the right torque, could you fasten the…
Guit-picker, 20 September 2018Hey, thanks Greg! All great input! Excellent point! I will definitely do that! Oh!, I get it now! :idea: I really like that idea, but I'm running into clearance problems…
Guit-picker, 20 September 2018Do you mean the front frame around the speaker or do you mean the rear frame holding up the speaker shelf (not shown in these latest pictures in order to show the…
Gregwor, 20 September 2018Mount some cleats in your studs and inset some MDF or OSB. The cool thing about this is that you could make the sheathing removable (with screws) so that if you ever…
Guit-picker, 25 September 2018Wow! Thanks Greg and Stuart for your wealth of input! I went to work this weekend and redrew the right soffit again. I pivoted the left side (window side) - out on the…
Soundman2020, 25 September 2018More cross pieces. Right now, there is nothing at all supporting your front baffle, except the edges. Thus, the entire baffle is free to vibrate, and "pump" from the…
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Guit-picker, 22 November 2018Well, I'm back at it after 2 months of family obligations. I've got version 6 going on the speaker soffit design. Been drawing in places like ER waiting rooms, etc...…
Gregwor, 25 November 2018I hope things are alright on the family front dude! :thu: This one is better for sure. You might be better off using 1/2" Homasote. This would allow for more insulation…
Guit-picker, 28 November 2018Thanks for your input, Greg! I'm beginning to think that the design for the speaker soffits (Right and Left) are almost build-ready! Of course, I will have to design the…
Gregwor, 10 December 2018Hi Ron, Sorry I didn't get back to you. Thanks for the nudge! In this picture, you can see some of my hangers on the right. They are 1/2" thick Homasote with 2" thick…
Guit-picker, 11 December 2018Thanks Greg! I'll tweak the panels and start drawing the mirrored images for the left speaker. Then I can go to work on the middle section above/below the window. Do you…
Gregwor, 11 December 2018I know there are several types out there. Some are even just 703 type fiberglass! Some are drywall-like. So, it is impossible to say whether they would work. Try to find…
DanDan, 12 December 2018Hi Guys, most Soffit Mount Designs I have seen used only light fibre, suspended against sagging here and there by wires or shelves. It's been a while but any hanger…
Soundman2020, 12 December 2018Hangers work like waveguides, mainly. There are several acoustic processes going on at once in a set of hangers, but the main one is that they act as waveguides,…
DanDan, 12 December 2018Thanks Stuart. With LF traps one inevitably ends up back at the same question. Which works best? Eric tested and replaced them.…
Soundman2020, 20 December 2018By "fanning them out", I assume you mean that each hanger would go at a slightly different angle to the room? For that space, there's probably not much in it, between…
Paulus87, 22 December 2018Hi Ron, Firstly, I would definitely trust Stuart's advice over my own, and I am only advising you based on a mere freckle of experience compared to Stuart, so I am just…
Guit-picker, 19 March 2019Well, I’m back after 3 months of caregiving for an elderly father in all my spare time. Got some help with that and am now able to put some time in again to move forward…
Guit-picker, 11 April 2019Still hoping to get an answer after 3 weeks since March 18th. Is there a concern about the bass trap sections above and below the control room window? It's only a little…
Guit-picker, 19 April 2019Tom, Thanks for the reply. I took another look at John's drawing and I see what you mean. It will take off a lot of material from each of the hangers, but I guess it's…
Soundman2020, 29 April 2019Right. That actually sits in front of a wood panel (eg, MDF), which is a continuation of the front baffle of the soffit. The insulation in front of that helps with…
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Soundman2020, 14 June 2019Darn! I keep replying late to your posts! :oops: Sorry about that.... I'm tracking a ton of threads at once, and sometimes one or two slip through... Anyway, I agree…
Guit-picker, 24 June 2019Hey, thanks Stuart. Thought you were off building a studio in some remote place! :lol: As you can see, I haven't been on the forum for a bit - for a good reason: I've…
Guit-picker, 11 July 2019Yes, I have the link and will soon be digging in. Thanks! So glad to have this to start out with, since I am soon to enter into the "scary" acoustics phase, being green…
Guit-picker, 11 July 2019I borrowed from barefoot's design and used threaded rods and bolts rather than a strap to hold things down. I liked his idea because it lends itself pretty good to make…
Guit-picker, 7 September 2019Hi Stuart, I have a partner who is going to work with me and get through the learning curve on REW. Right out of the chute, we're not understanding how to even hook up…
Soundman2020, 7 September 2019For the soundcard calibration, you hook up a simple cable that goes from either the left speaker output OR the right speaker output of your sound card, directly back in…
Guit-picker, 18 November 2019Greg, My profuse apologies. My world has been hectic between work, family matters, keeping the home running and ..... then there's the studio! I have been out of the…
Guit-picker, 20 November 2019Here's the details of the couch pedestal: Image not preserved: 20191001_211130.jpg We used 2x10 pressure treated lumber. First, we cut and assembled the outer…
Guit-picker, 20 November 2019Oh, I almost forgot. I added a little detail to the flooring you might think is novel: Image not preserved: 20191009_220358.jpg Take a close look at this picture of the…
Guit-picker, 28 November 2019I got started drawing the back bass trap for the control room. The most difficult part right now is getting around the slope of the ceiling. It drops about 10 inches in…
Guit-picker, 28 November 2019Hey! Thanks John! I really like this! I will have to go through a bit of a learning curve and will have some questions. I need to understand more details than I can…
Guit-picker, 29 November 2019Yes, thanks John! I appreciate your attention. Please bear with me. I looked again at the photos - very nice, I would add. So how can I use the calculator with different…
Guit-picker, 29 November 2019Thanks Greg! There's a wealth to study in that thread you shared. Just what I need. 8) I am still unclear about how to apply the calculator in the corner application, :?…
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Guit-picker, 11 December 2019Here is what I drew up from what I could ascertain from John's bass trap design that he graciously offered. I am using dimension lumber, starting with 2x4" on the…
Guit-picker, 14 December 2019I used the handy Hemholtz calculator to calculate each of the 19 slots individually to see what it would show for absorption frequency. Not sure if this is the correct…
Waka, 17 December 2019I would also like a little more information about this if you get a minute John. So in your Recording Manual (I know it's quite old now!) you show that you have a thin…
Guit-picker, 27 December 2019A couple of months ago we rang the control room for the first time. It took a while to figure out the whole setup and I hope we did it right. In the meantime, I got busy…
Guit-picker, 29 December 2019TomessAI, the mic was precisely 77" away from the speakers, 47 3/8" high, pointing straight forward at 60 degrees. Looks like Gregwor got it loaded OK. Thanks for your…
Guit-picker, 6 March 2020I am busy making good progress on building the rear bass trap (all 700 pounds of it), but I have one question: I am planning on lining the inside walls, as well as…
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Guit-picker, 18 March 2020That's what my understanding is from what I'm told on this forum. With all of the different inputs, I am getting a bit confused as to the right way to go with this and I…
Waka, 18 March 2020John provided guit-picker a design of a large corner helmholtz design. It is a true helmholtz, using a slot design in the same way John's inside out walls work. The…
Gregwor, 19 March 2020Here is a post John has made about the design: viewtopic.php?f=2&t=12365&p=135094#p135094 -------------------------------------------------------- Also, it seems to tie…
Guit-picker, 21 March 2020We are about to start building our hangers for the front soffit area.... at last! On Stuart's good advice, I have designed the whole array for 1/2" Homasote centers and…
Waka, 21 March 2020Acoustic hangers don't absorb low frequencies simply by absorption, so you can't really base it off of the absorption coefficients. Owens corning is only really…
Guit-picker, 27 March 2020My project partner will be building up the hanger panels. He has the idea to mount each section of hangers by "stringing" them across horizontal bars like this: Image…
Guit-picker, 28 March 2020I have mounted the first of three sections of the rear hemholtz resonator / bass trap in the rear: This is the ugly side up, when I couldn't flip it over (~250 lbs)…
Guit-picker, 29 March 2020Yo, thanks you guys! :-) I feel assured now! :) So thankful for this forum! :-) What about insulating inside the bass trap? I have heard three ways: 1. Fill it up with…
Guit-picker, 30 March 2020Thanks Paul! 8) Well, as of last night, section two of three has been installed..... after re-assembling about 3 times to get it right. :roll: It will be a while until…
Guit-picker, 4 April 2020Thanks Greg! I have been away from the project for about 3 days - between work and just had a team of guys replace ALL my windows and patio door to the tune of $35,000…
Guit-picker, 8 April 2020As promised, here is a closeup of the wood veneer finish on the rear Helmholtz / bass trap. I made the resolution as high as I dare go, according to forum rules: Image…
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Guit-picker, 11 April 2020Yes, I am planning on a step-by-step documentation. I worked on it the last two evenings and am taking photos. I will post soon. I have the 3rd and last section veneered…
Guit-picker, 10 May 2020I want to be a “man of my word” by fulfilling the promise I made to Greg to explain the process of veneering and a little bit about the bass trap, in hopes that it could…
Guit-picker, 2 July 2020Been running in circles but found time to install a large portion of the acoustic hangers in the front soffit area. I came to a stopping spot because the shelf below the…
Guit-picker, 17 September 2020Hi Kevin, My profuse apologies for not answering for over a month! I have been off of the forum and off of the project for a couple of months, trying to retire (business…
Guit-picker, 16 October 2020Thanks Kevin, The fires are pretty much done and the highways over the pass have reopened. The rains were a huge help. Skies are clear and beautiful. Just mopping up…
Guit-picker, 13 April 2021Since I haven’t posted since October, there is a lot to update. I am at the point that ¾ of the acoustics are installed in the control room and am expecting the new…
Guit-picker, 13 April 2021As I mentioned today, in my update, I am about to build the right and left RFZ panels onto the tapered side walls and have questions as to what materials to use. I have…
Guit-picker, 20 April 2021Thanks Gullfo. Is there anyone else who wants to answer some more of my questions from my last post and/or take a look at my posted data and advise? I am wondering if…
gullfo, 21 April 2021as a note: the scariest part is the construction. treating the room is easy because you can readily adjust the treatments. once the construction is completed, you're…
Guit-picker, 21 April 2021Thanks Gullfo for your sincere efforts to advise and encourage. I appreciate that. It appears though, that you are not familiar with my design and don’t realize that…