I am unhappy to report that gravity is changing, it is no longer constant.

Pitt U, IIRC. It was the 1974 IC4A's, I qual'd in the 400 IH.,

John
Funny I was just up the street then and the only dark skies were from clouds. Or did you bring some darkness with you?

However you may have noted many of the buildings were black. Originally they were white stone! Yes the air was a bit dirty until the 50’s. Many white collar folks would change their shirt at lunch! Really!
 
Funny I was just up the street then and the only dark skies were from clouds. Or did you bring some darkness with you?

However you may have noted many of the buildings were black. Originally they were white stone! Yes the air was a bit dirty until the 50’s. Many white collar folks would change their shirt at lunch! Really!
I wonder. Maybe it was a stormy day and I saw the black buildings? I coulda sworn it was pollution, perhaps my perception was clouded by expectation?

Come to think of it, at the NCAA's at BYU the next year, a storm came around a mountain heading towards the stadium while I was prepping for the semi's, a bolt came down and totally destroyed a huge tree while I watched. I guess the common denominator was me..go figure. And yes, a stadium with about ten really tall lighting towers around it...made for some really comfortable feelings..
Two brains?? More specifically, the main bridge....and the battle bridge...

Cal,
I did some snorkling in the Cayman Islands, Cozumel, and Mazatlan. Absolutely loved it. Forgot where the Sea Lions were, but that was so cool as long as you don't get between a mom and her little ones.

John
 
Just got my xenyx x1832 USB mixer delivered.

Tomorrow I will start making wood dust. First a 2RU case for my QSC RMX1450, then one for the XENYX 2222 USB, then rinse and repeat for the second 1450 and the 1832 USB.

The biggest decisions now are, what do I put into the lids of the mixers. I figure all the cordage like snakes, speaker cables, and mike cables (ten color coded ones, so cool) will be in bags or sumptin.. But I have ten cheap(ish) dynamic mics and a wireless headset mic, so was thinking about doing the foam thing in the lids, maybe 3 or 4 mikes in each lid? Problem is, while more is better, it is also heavier. Maybe 3 mics with mic and power cords as a standalone system carry?

Who knows, I'll sleep on it.
Maybe swappable lids that I populate based on gig requirements?

It's so much fun when it's not being done for a living. I would probably not like it if it were work..

John

ps. if anyone is interested I can do the pic thing on the builds.
 
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ps. if anyone is interested I can do the pic thing on the builds.
Interested in the foam assembly then the carbon fiber sheet coating. Please start a new thread under speakers multiway or subs as appropriate. "Lightweight foam+fiber case XXX watt XX to YYYYY hz speakers". I'm so sick of hearing about Baltic birch sold in Europe, and not at HD or Lowes (in flyover states). I need the light weight or an inexpensive source of rental gorillas.
 
like a 2 by 4 being 1.75 by 3.75?? Life is soooooo confusing. My house is from 1850, so a 2 by 4 ACTUALLY IS!!!
I see you were already ragged for not knowing 1.5x3.5.

I clearly remember when it was 1.625x3.625. I have the article explaining the "New!" sizes in a machinery book somewhere. (FWIW, metal studs can be had in the x.625" size.)

I am 99.44% sure the mill does NOT set 2x4 slices and then sawdust and dry down to commercial size. That process just a memory from 80++ years ago. I think they have a very sharp idea of the moisture content and shrinkage and amount of planing needed, and bandsaw just big enough.

My house built circa 1980 does use 99% full 2x lumber. We know it was milled on site from trees dropped to clear the site. Trees being trash-Spruce (a local specialty), he wisely let the lumber run full. He left a few full 2x6 in the shed, but whenever I do any remodeling I save every scrap because it is a pain to shim-out modern lumber to that size.

My last house from circa 1835, the joists were 5" to 7" diameter, adzed one side, with the bark still on. Studs were 3"-4" diameter, adzed both sides, and barky between. However the sills were full 9" square locust, old growth, hard as a rock.
 
I would do a box just for microphones. Exactly the right number of slots for the mics. That way no one gets left behind.

A simple pair of flanged spools on the inside of the covers will hold mikeyrofone kords and power cords.

Casters on the back of loudspeakers so you can flip them and stack stuff on top. (Some prefer the sides.)
 
...I'm getting directed ads about an isometric exercise book.
Also, directed ads for behringer mixers and amplifiers in the 1500 watt total range as well as carbon glasscloths and epoxies.

This is why I do not have an Alexa, I do not need directed ads (or big brother listening in) to my entire life..
Agree entirely with your sentiments. No Alexa here, either. I would rather sit on barbed wire than get one.

I haven't seen a directed ad in a while. Not a single one.

I can't say exactly which are the crucial ingredients, but here is my recipe:

0) Don't have a smartphone. They exist mainly to spy on you, and many people turn into unhappy and distracted zombies once they start using a smartphone.
1) Use only Linux. (Commercial OS are bundles of spyware these days. Doesn't matter if its Windows, Android, MacOS.)
2) Use only Firefox. (Google Chrome is spyware. MS Edge is based on Chrome and is spyware. )
3) Install Cookie Autodelete on Firefox ( https://addons.mozilla.org/en-US/firefox/addon/cookie-autodelete /)
4) Install uBlock Origin on Firefox ( https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/ )
5) Never log in to You Tube, Gmail, or any social network. (I do use You Tube without logging in.)

Those 5 steps worked very well for me. However, You Tube was somehow still tracking me from one computer (at home) to another (at work). And Google Maps always knew where I was located to within a few blocks.

So I took step six. I browsed over to NordVPN and bought their VPN service (it's a few bucks per month, less if you pay for several months up front.)

There are other VPN providers. NordVPN has full Linux support, which is mandatory for me. NordVPN is based in a country (Panama) which does not have mandatory data retention laws, i.e. they are not forced to track all your online activity.

Now I can type "nordvpn connect Finland" in a terminal, and my browsing activity will (a) be encrypted, and (b) appear to originate from Finland. Once I'm done watching You Tube, say, I can type "nordvpn connect Sweden", and You Tube won't be able to track me.

After I got the VPN, the only websites that can track me are ones I log in to (Amazon, say). I usually disconnect the VPN, do my purchasing on Amazon, then reconnect the VPN. Amazon then loses track of me.

I'm not trying to do anything nefarious, just mind my own business, and not be followed around and spied upon by rich and powerful criminals.

-Gnobuddy
 
I went to a track meet in Pittsburg in spring of '74, the sky was black.
At my next visit there in '93 to visit the quench diode manufacturer (Powerex), the sky was blue. What an amazing difference.

John
I grew up on the Southside of Pittsburgh in the '50's, where the J&L steel mill ran for several miles along the Monongahela River. Back then black was just the normal color of the sky. By '74 things were improving substantially. I can't imagine how the sky looked in 1941-45, but I guess the upside was obvious.
 
Interested in the foam assembly then the carbon fiber sheet coating. Please start a new thread under speakers multiway or subs as appropriate. "Lightweight foam+fiber case XXX watt XX to YYYYY hz speakers". I'm so sick of hearing about Baltic birch sold in Europe, and not at HD or Lowes (in flyover states). I need the light weight or an inexpensive source of rental gorillas.
For my speakers, I have two models. One is the smallest possible box an eminence delta pro can fit with a selenium D205TI with a 6 by 6 horn attached. Depth is from the tweeter, width is from the 12 incher, height is sum of horn and woof. It was intended as a mid/high stack over a woof cab. But it actually sounds pretty decent as a standalone PA and background speaker. I suspect I used 1/2 inch ply for that pair.
The second is same drivers, but a sealed cab of whatever was required for a DF of .7, just flat response, using 3/4 ply, and a bit heavier.

My worry with foam is this: structurally, as the woof pushes the cab sides outward, that tries to peel the epoxy away from the foam in the normal direction for any side to side bracing elements. I'm not sure if foam can handle this stress, I think it may just pull away.
I was thinking that if I make the sides 1/4 inch ply (well, ok, .200 inches), and use aluminum angle struts (maybe 1/16 thick by 3/4 flanges) for compressive and tensile strength, with a somewhat organic weblike structure at each end to pick up more of the side panel, I can get the side resonances high enough that the acoustic insulation absorbs the frequencies that could excite the sides.
For equipment cases, I like the foam better, as normal wear and tear shouldn't cause delamination. And I suspect the foam thickness helps with rigidity of the panels much like the aluminum honeycomb. Unfortunately, I suspect the foam would not take well to a 3/8 radius roundover router bit.

But I bet if I tried to route a foam box edge with the router, the video would go viral. While I probably would not get rich with the proceeds from the tens of millions of hits, my next of kin might..

John
Waitaminute....If I have a structural strut bonded to the glasscloth of the side panel, the acoustic pressure will be against the glasscloth structure, not the foam.. so high acoustic pressure will not be trying to delam the foam from the glasscloth..hmmm...I am gonna try the foam stuff for sure...
 
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I would do a box just for microphones. Exactly the right number of slots for the mics. That way no one gets left behind.

A simple pair of flanged spools on the inside of the covers will hold mikeyrofone kords and power cords.

Casters on the back of loudspeakers so you can flip them and stack stuff on top. (Some prefer the sides.)
While I like the idea of all the mics in one box, I don't do gigs that would need them all. And my mixer rack is only 8 RU (14 inches) while the box would be 18 inches deep (my standard box depth). So the amount of volume available in the lid won't support a lot of cables. I was thinking 3 mics maybe with 3 cables plus power cord, that I could swing in the volume. Maybe add in the wireless headset mike/transmitter and some spots for batteries..

My bigger speakers are (guessing) 22 by 15 by 12 inches. Good enough for me as long as gravity decides to behave. No casters, unless I put the 18 incher back into a box as a real sub. Alas, then I'd have to attach a ball hitch, directionals, and a license plate to it as it wouldn't fit in my Impreza.

John