Jacob's other projects

[Laecaon]

Well they started promptly at 8am. I was gone for awhile. Got back at 5:30pm, and they were 100% done/gone. Crew was probably 6-8 guys. They even replaced a section of plywood!

[DRIVEN]

Wow! Congrats.

[wayno]

That is good

It took me 2 weeks and 2 days to do my roof from start to finish(I put the roofing on the roof myself), and it did get rained on one night, but all the felt paper was down so I didn't have a leak.
It was hot(90s) most of the job, and I didn't work full time, sometimes I only worked half the day, as I said it was hot.

[wayno]

I just found out today that the neighbor paid $12,000.00 to have his roof stripped(tear off) of 2 layers of roofing, and then had a 50 year roof installed, it looked like 30 year roofing to me, but they(Home Depot) are guaranteeing it for 50 years(has warranty), a contractor working for Home Depot puts the roof on, and he pays Home Depot.
Fact is that the guy is moving to Hawaii(his wife is already there) in June and he could care less how long the roof lasts, he and his wife are selling all their properties and moving.
It cost me less than a quarter of that, but I did all the work.

[DRIVEN]

Mine was a 2 layer tearoff too. Ran a little bit more than that but they replaced some sheeting too.

[wayno]

The neighbor said they only had to replace one 2X8 foot piece of plywood on his roof.
I only had to replace around a 2X3 foot piece on my roof because of ants.

[Laecaon]

All I know is, it was done for half of what Malarkey would have charged. They used Malarkey materials. They are coming back to paint the black flashing on the eves to match the trim of the house.

Definitely a hookup price.


Home Depot is a store, not a contractor. They work with local contractors to get work done. You work directly with Home Depot, not the contractor, and the contractor has to live up to yours/Home Depot's standards. Kinda shitty for the contractor, but also probably a much more guaranteed source of income.

[DRIVEN]

Again, congrats. It'll be nice going into the rainy season with a fresh roof.

[wayno]

I thought $12,000 was stupid expensive myself, after talking to him he had bids from $7,000 to $12,000 and he took the $12,000 bid from Home Depot, I guess the $7,000 bid was one guy and winter was here, like you he had a 1 1/2 day break in the rain and Home Depot got it done it when it was dry, the low bid guy would not been able to do that.
I would never work for any business like that again(sub contractor), I want to choose what work I am going to do.

[Laecaon]

I like projects... I have like 5 in various states sitting on and under and in my desk.

But this one gets the limelight right now.

I have a stereo setup in my room... but I hardly use it. Dont want to run a wire across the room, and all the audio comes from the right of my desk, and the speakers are really really bass heavy so not the friendliest when I get home from work at 3am. And I have always had an itch to build myself some speakers.

Well decided to make some decent desk speakers which then turned into a soundbar, with Bluetooth and batteries so it could be portable...


So far I have the speakers, the amp board, and the battery boards. In the mail are the components for my crossover.

Speaker selection is:
2 Dayton Audio ND91-4. 3.5" Full range speakers with an incredible wide frequency response and power handling as well a lot of excursion. In a ported box they will extend down to about 60Hz
2 Dayton Audio ND16FA-6 5/8" tweeters. I have these in my car, they are cheap and sound amazing.

Crossover between the 2 will be around 5kHz.

Material will be Birch.

And hopefully I'll get to cut out the face plate at work next week. If all goes well it will be my first time making a program for a mill.

[DRIVEN]

Well, this should be cool.

[Laecaon]

Crossover components came in today.

Capacitors, Resistors, and Inductors.

[Laecaon]

One crossover assembled. Soldering to those large panels of copper sucked. Why after I prototype something I usually just have some real PCBs made, and they come with a type of gold coating to help with the solder.









Edit, Just did a sound test to make sure everything was working. Yes it works.

I at first thought that I couldnt hear the tweeter, so I unplugged it, And holy shit the sound was bad. Well a full range driver being capped at 5khz would do that... So the tweeter is definitely working, and it is definitely very level with the full range.

For how small these things are, there is a good amount of bass. Cant wait until the enclosure is made.

[Laecaon]

Got the second crossover assembled. Took more pictures.

So once you have a plan like above, time to make it!

I have a few sheets of copper clad FR4 (fiberglass). Both sided. So I can make a 2 sided PCB.

First I drilled all my holes. Then I sketched out everywhere I needed to remove copper to make my traces.





I used a dremel with a cutoff disc to all of this.








Once all cutout. Take a razor blade or some steel wool and scuff up the surfaces for soldering. You do need a decent soldering iron. I use a butane iron, supposedly equivalent to 60W. I would like a bit hotter.

Hot glue is used to help with vibration dampening. Holds things nicely, and easy to apply.







All done!

[Taterhead]

Looks cool but I have no clue how all that shit works.

[Laecaon]

The gist of it is that sound is produced from a frequency. Inductors and capacitors like to limit frequencies. So with the right parts you can give a speaker a range of frequency that it is capable of running and also where it is desired to run at.

If you would look at the charts for these two speakers, the Full range can go down to 60Hz and up to 17kHz. But it's really only effective from 100Hz to 12kHz. And the tweeters range is 3kHz to 27kHz. It actually has a pretty decent reponse and since it's not moving a lot of weight, it can do it pretty well. So this design crossing at 5kHz puts more on the tweeter, so that the full range speaker doesn't have to respond to those frequencies and thus can boost the low end a little better.

There is a lot more behind all of this. Too much really.

[flatcat19]

SMH. Smart people.

[flatcat19]

Kidding. Those look super slick.

[Taterhead]

Thanks for the simple explanation. I kinda get what you're saying.

[Laecaon]

I did it! I made my very first mill program using Cam software! That took a few days to try and both figure out how to get the software to output correctly for the machine, and figure out the actual move settings to make it properly.

And a super duper high quality potato vision video!

https://www.youtube.com/watch?v=Qn66vISBnaE



And the final product (as far as coming from the machine):





The tweeter is press fit, Im holding the "woofer." There is more work yet!