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Post by Ethan Winer on Jan 18, 2021 17:45:32 GMT
On second thought, I'll answer your email here because the information might help others. I assume / hope you don't mind! As explained in my Web Store page, flat-rate consulting is based on $200 per hour, but those are "loose" hours. For most people who don't have endless newbie questions, the initial $200 is sufficient and includes a "reasonable number" of emails back and forth, or phone calls, or Skype if overseas. So the fee is not a "per room" charge, and the hour or two I'll spend for that flat rate doesn't have to be all at once either. Often people have initial questions, then a week or two later they have a few more questions which I gladly answer without charging again. So I don't do this like a lawyer and run the clock for every second I'm helping someone! If someone wants to learn REW, we might both have REW on the screen as we talk on the phone and I walk them through the steps to measure and interpret. And then they know what to do without me when they measure again. But the help isn't unlimited. Someone with a large project that needs more help might be asked to pay $200 again. But that's only if I've already spent two hours or more and there are still other issues to go over.
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Post by Ethan Winer on Jan 18, 2021 16:55:45 GMT
I agree with Hex that this is not a good speaker to use for measuring rooms. If for no other reason, they call it MEGABOOM and claim it has "thundering bass." So it might well be fun to hear at a party, but it's just as likely to not be very flat. I saw no specs on their web site, only nice words.
For measuring a control room you should use real monitor speakers, ideally the same speakers you'll use when mixing. Good monitors could be used to measure a live room, though there's no real need to measure a live room anyway. A live room is designed and treated based on its size and shape more than measured response. Why? Because the response changes for every sound source location! So do you measure in the drum corner? Or along the wall where the guitar amps will be? The middle of the room where someone usually sings? That said, if I were to measure the RT60 in a live room, which is the main thing to measure, I'd probably use a full-range PA speaker from a known brand like JBL or Mackie etc.
I got your email, and I'll reply to that soon.
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Post by Ethan Winer on Jan 16, 2021 16:22:44 GMT
Audio transformers don't need to be powered, and the original Mojo Maestro in my article is passive and so needs no power.
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Post by Ethan Winer on Sept 5, 2020 15:51:27 GMT
I don't know what "green wool (polystyrene bat)" is, but if it sounds different than rock wool that may be your problem. You need material that absorbs well at bass frequencies.
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Post by Ethan Winer on Sept 4, 2020 16:04:30 GMT
To answer your original questions, an absorber can't be too thick. So that's not the problem. The real problem is this is just what happens in small rooms! I'm sure it must sound pretty good even with what looks like an imperfect response. The problem for me is there are too many graphs, and it's not clear what's different. One is labeled 5cm wool and another is 15cm wool. Another is 2 more cloud. I don't even now what that means. Did you replace 5cm with 15cm?
Here's what I suggest: take one measurement with the microphone where your head would be. Then move the microphone 20 cm to the right and measure again, then 20 cm to the left (of the original, 40 cm total) and measure there. And do this with all of your thickest treatment in place.
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Post by Ethan Winer on Sept 3, 2020 20:34:45 GMT
The link to your REW file is broken. If you fix that I'll be able to take a look.
You have a ton of bass trapping. I can't believe the response isn't at least pretty good!
The standard frequency for crossovers to a subwoofer is 80 Hz. That takes more of the load off the mains, letting you play louder and with less distortion.
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Post by Ethan Winer on Jun 17, 2020 15:33:14 GMT
mp3, Ethan? I think your account has been hacked. I'm tempted to take all these impulse responses and make a sample pack. We'll be rich!
LOL, I have nothing against MP3 files!
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Post by Ethan Winer on Jun 16, 2020 17:04:51 GMT
Small rooms can have real reverb if they're totally empty like yours. There are probably flutter echoes in there too, but each is masked by the others having different timings. My two-car garage is a little larger: And it has real reverb: Garage.mp3 (328.11 KB)
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Post by Ethan Winer on Jun 3, 2020 13:51:23 GMT
The solution is always more bass traps. I see a lot of bare wall surface, and the wall-ceiling corner at the top is also bare. So that's next.
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Post by Ethan Winer on May 27, 2020 16:09:21 GMT
I would not use a tuned bass trap. Porous absorbers can target 55 Hz, but you need a lot of surface covered. Same for your rock wool on the back wall. How much of that wall is covered, and how thick is the rock wool?
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Post by Ethan Winer on May 20, 2020 17:59:43 GMT
That's just nonsense. Now, "sounds better" is subjective. So if someone prefers a non-flat response with crackle noises and audible levels of distortion that's their right and preference. But vinyl is much worse than even inexpensive consumer level digital equipment in every way fidelity can possibly be defined. This is about "high fidelity," right?
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Post by Ethan Winer on May 19, 2020 14:50:14 GMT
(Nobody says that about 8 track or cassette tapes!) This quote is from my Audio Expert book: It's amazing to me that nobody ever complained about analog recording like they do about digital recording. I'm doing a project right now completely in Pro Tools 24 bit / 48 KHz. The musicians were great, everything sounds great, so that's all I care about. The TDM bus doesn't sound thin to me. What is a thin TDM bus supposed to sound like? I've done a dozen albums completely in Pro Tools, including three Grammy-winning Bela Fleck albums. —Roger Nichols, famous recording engineer and an early proponent of digital recording
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Post by Ethan Winer on May 18, 2020 19:09:43 GMT
Michael summed it up nicely. For old people who grew up with records, nostalgia is another factor. And everyone likes the large front and back cover art. Though many CDs include either a booklet, or folded up art that expands to full size.
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Post by Ethan Winer on Jan 20, 2020 19:04:51 GMT
Yes, I have extensive experience with this, and I've written no less than three articles to explain what room "correction" (really just EQ) can and cannot do. I can tell you here that it can't do anything about room reflections. So whether you use room EQ or not, you still need bass traps and other acoustic treatment. This is my last article, and it has links to the earlier ones. Though this one is all you need: Final Dirac Report
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Post by Ethan Winer on Nov 25, 2019 17:22:21 GMT
When straddling a corner the gap size is whatever it is, based on the panel width. Bit I wouldn't obsess over matching gaps and frequencies. A typical 2x4 foot 4- or 6-inch thick panel straddling a corner works very well.
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