u/PolyglotGeologist

I get that you guys have 2-3 remote jobs, but is it okay to make a startup with the free time after work instead? The good thing with the startup is it can scale, whereas an additional job doesn’t scale unless you take on more jobs (until you reach your limit).

I dunno if holding down more than 1 job is sustainable for me, but working on my own startup is, cause I can do it whenever.

I have a 16’x12’x8’ tall room. I’d like to make 2’x4’x6” or even 9” thick Safe n’ Sound panels, but I don’t want to build the frames yet cause I just don’t have the time yet, and I also want to run some Umik-2 tests to figure out where to place the panels and whether 6” v. 9” will be worth it.

Any idea if I can find really big pillow cases to house 2’x4’x6” or 9” thick slabs of Safe n’ Sound? I could just stack the slabs loosely and exposed by leaning them on the wall, but I don’t think that’s very safe cause they’ll probably shed.

Like even microscopically, or worse, like stuff you can see in the carpet? Plan is to cover the SnS in acoustic fabric like a pillow case, then cover the sound panel frame itself in acoustic fabric, including the back.

I could use thin plastic for the pillow case portion, but not sure if that will materially impact the sound absorption.

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What about fiberglass, does that one shed AT ALL under the same wrapping above?

It appears easy oh just cut it with an insulation knife, but cutting thickness off precisely and safely sure looks hard :D

Same with if you’re trying to do a 4” sound panel.

Even cable matters or other reasonable brands. Maybe these optical hdmi cables tend not to be as good as the copper ones, but obv you need the fiber technology for long runs to another room.

I've seen some of you crazy bastards toss $100K or even $250K at ONE play (one stock pick or even option). That's some people's entire annual salary or a few years' salary.

I think that would be much easier to stomach if you're already sitting on $500-1M portfolio in VTSAX / VTIAX / VTBLX / Emergency Fund. Lose $100K on a big play, is okay, try again next year, maybe spread it on $10K on 10 companies. What you'd be looking for then is a 10x company over 10 years to get to a second $1M on your $100K play.

$500K-$1M isn't that crazy to get to if you're a bit extreme; re: live with parents earning $100k/yr and work for 5-10 yrs straight, saving and investing 90%.

Of course, buying AMD or Nvidia in 2017 would be nicer, but not many of us did that even if we wish we did.

Was playing with acousticmodelling.com/porous.php, and I noticed you need to go WAY thicker — like 16” or 24” at 6,000 GFR or even 3,000 GFR — to get a noticeable increase in absorption in the low-end frequencies after 8” thick panels at 10,000-15,000 GFR.

Is this widely known/are 8” thick broadband panels (2’x4’x8”, 10K GFR) common for this reason in professional studios? 6” is pretty good too, but you do get a noticeable bump in low-end absorption from 6” to 8”, that simply isn’t there from 8” to 10”.

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Also, can one of you explain how these absorption coefficients work. Like if it says .4 at 50 Hz, does that mean any 50 Hz wave that hits the 8”, 10K GFR panel will have 40% of its atoms’ kinetic energy turned into heat by bouncing around the rock wool insulation within the panel? What happens to the remaining 60%?

If it gets reflected back into the room — and I put many of these 8” panels up — will that 60% reflected back in the room hit another 8” panel and take another 40% hit?