Substantial posts by Eric Best, who started the thread, and by the forum’s most active contributors. 42 of 112 posts are listed.
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Eric Best, 1 September 2011This forum hasn't been active for a while. I have been away for about 5 years with the speakerbuilding crowd at the parts-express forum. There I have learned quite about…
Eric Best, 2 September 2011By the way, DON'T BUILD THIS! This is just a computer simulation and it probably won't be built for about a year. These computer simulations are VERY accurate and it…
Eric Best, 2 September 2011Jeff Bagby is the King. Here is a link to his stuff. http://audio.claub.net/software/jbabgy/jbagby.html Jeff has a guide for PCD but Paul Carmody has written a very…
Eric Best, 19 December 2011Good to see someone else close. I haven't had the chance to do anyting else with it. I figure that I'm going to finish the room that I'm building, measure the drivers in…
Soundman2020, 21 December 2011I've never heard of any "Nuquist theorem", actually. Personally, I reckon Nyquist is pretty accurate... (and no, that isn't splitting hairs: People who actually do know…
Eric Best, 28 December 2011Hey Zega, The choice of drivers were made based on speakers that I have previously listened to and had purchased the parts to build. I decided to adapt them to flush…
Eric Best, 9 July 2013Hi Stuart, I'm still building rooms! I usually only get a couple of hours a week for construction so it goes very slow. I'm putting in the floor right now. As soon as I…
Soundman2020, 9 July 2013Naaah, don't believe ya! You know what they say around here: "Pics, or it didn't happen". So no pics.... :) But seriously, why not post some "in progress" pics too,…
Eric Best, 14 April 2017OK, the control room is done, so it is time to build these speakers. I don't know what happened to the images in my original posts, but I have decided to go with my…
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Eric Best, 17 April 2017$21/sq.ft. x 2.9 sq. ft. x 2 for 3/4" glass, that would be $120. I don't know how I would cut the holes for the speakers though, and who knows what kind of a rats nest…
Eric Best, 25 April 2017Pictures from measurements last night. Still have a bit of a learning curve. My mic seems to not be responding well above 9k. I don't think it should matter in the…
Eric Best, 27 April 2017I put together a crossover with parts that I had on hand. Some of them weren't exact (I used a 3uh inductor instead of a 3.7uh for example) I unwound some coils that I…
Eric Best, 29 April 2017I had been measuring with the output from my laptop. I just connected my soundcard and did some more measurements. Let's just say my measurement mic does not have…
Eric Best, 3 May 2017Sorry this took so long. The picture below show all of the treatment that I have for the room. The wedges on the sides are a hard surface facing the mix position but are…
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Eric Best, 5 May 2017With some help from Glymur (Curt), we measured the room. Here are links to the mdat files Baseline from the mix position…
Soundman2020, 5 May 2017I downloaded your files, but there's something very strange going on there: I suspect the data is not valid. The SPL curves look fine and normal, but the rest is way…
Soundman2020, 5 May 2017Mix position, baselline, both left and right speakers. The other two (Left only and right only) are equally invalid: Image not preserved:…
Eric Best, 5 May 2017I downloaded what you have for my data from you link and for the rt60, this is what I got. Image not preserved: screenshot rt60 mix position.JPG This may not be good,…
Eric Best, 5 May 2017Here are new measurements. https://www.dropbox.com/s/a8rie5wtsukp5jf/baseline.mdat?dl=0 https://www.dropbox.com/s/d48on2o4wq7tc1b/mix-to-front.mdat?dl=0…
Soundman2020, 6 May 2017Now THAT looks a little better! Glad to see you found the problem. What was it? However, I'm really curious about your sound card: the calibration curve you show in your…
Eric Best, 6 May 2017I am pretty proud of the speakers! They sound absolutely amazing. When I listen to them, I sit back and say to myself "yeah, I did that." :D Curt put new batteries in…
Soundman2020, 6 May 2017:) 8) :roll: :!: It happens. The reason I mentioned that, is because it has happened to me as well... :oops: :oops: :oops: Left channel, IR, switch from dB to %FS (Full…
Eric Best, 6 May 2017For some reason, I can't post an image, so I will try to explain in words. Image not preserved: string test.JPG No I don't, but I'm guessing that what you do is measure…
Eric Best, 6 May 2017Don"t know why it isn't letting me post pictures. Here is a link to the original IR showing reflections at 3.4, 6 and 9ms.…
Eric Best, 12 May 2017Built two superchunks in corners and about a half length in a wall/ceiling corner. I also built two panel absorbers according to the BBC 1992 paper…
Soundman2020, 12 May 2017Why were you targeting 50? I dont see any problem at all at 50. It looks pretty good to me. But your panel seems to be working at 30! Just look what it did to your mode…
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Soundman2020, 12 May 2017Ok, that would make sense. It was that ringing (feedback loop) that I mentioned previously, on your soundcard calibration. Probably something was messed up with the…
Eric Best, 12 May 2017It has been coming and going. It is ringing from the soundcard, and I can't isolate it. I am doing measurements using my headphone out from my laptop with a USB mic and…
Soundman2020, 12 May 2017It's interesting you say that. I've come across a lot of people trying to use USB mics, and ending up with problems. It seems the technology for USB mics just isn't…
Soundman2020, 13 May 2017No problem. For this test, SPL accuracy isn't so necessary. ... and my suspicion is confirmed! your 80 Hz dip is related to the vertical axis. It's SBIR. You are…
Eric Best, 14 May 2017We did this, it minimized the 80hz dip by a couple db. Unfortunately, this didn't budge anything around 80hz. It did flatten out the low mids a little more though, so I…
Soundman2020, 14 May 2017It's not just absorption that you need. It's a proper cloud, with a thick, massive hard back (I normally use 3/4" MDF), angled. And it needs to be angled lower towards…
Soundman2020, 14 May 2017It's not just absorption that you need. It's a proper cloud, with a thick, massive hard back (I normally use 3/4" MDF), angled. And it needs to be angled lower towards…
Eric Best, 14 May 2017I rigged up a cloud. with 3/4" mdf and a 4" 2'x4' panel of 703. Image not preserved: 20170514_142901.jpg Didn't get any change at 80hz. Image not preserved: with and…
Eric Best, 10 June 2017Hi Stuart! I hurt my back putting up that temporary cloud (I am completely recovered now!) so that slowed me down a little. I did add some trapping in those corners and…
Soundman2020, 10 June 2017Wow! Sorry to hear about your back, Eric. But glad it's better, and hoping it STAYS better! It looks like I forgot to comment on this: I'm assuming green is before and…
Eric Best, 20 July 2017Back from vacation and back to work. Here is the more organized crossover fitted into the speaker. Image not preserved: crossover.jpg Here is the speaker with the walls…
Eric Best, 9 September 2017Here is the planned set up for the monitor Image not preserved: 20170828_183329.jpg Desk under construction Image not preserved: 20170906_132809.jpg Stain applied and…
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Eric Best, 15 January 2018Thanks Stuart! The question is whether it will truly ever be done! I have been doing some of my own work in it and it is pretty easy. I still have some wiring to do…
Eric Best, 5 July 2018Thanks! I wish there was a way to share how great it does sound. It is not only a control room, it has also become a listening room and a place to relax. Everyone that…
Soundman2020, 5 July 2018My guess is: all of the above! Starting with the speakers. It's an excellent design, and an excellent implementation. Plus the room itself, of course. And don't forget…
Eric Best, 25 February 2019Hi Aaron, I'm not guaranteeing anything, but the speakers would probably be fine flush mounted in most situations. I did measure the drivers in the box and the wall for…