Welcome, Guest. Please Login or Register
Decware Audio Forums
08/23/17 at 14:59:59 



 
 


Pages: 1
Send Topic Print
The next project after the last one (Read 7222 times)
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
The next project after the last one
05/22/16 at 23:42:45
 
My sister wants me to make her something like this.
Anyone have any ideas?
I'm looking at a cheap little plate amp at Parts Express. It is a 2.1 amp, maybe a downward firing sub??
Drivers:there seem to be a lot to chose from. Kind of leaning to 6"ers. Maybe Silver Flutes?
I need advice.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Lin
Seasoned Member
****




Posts: 293
Re: The next project after the last one
Reply #1 - 05/29/16 at 01:04:39
 
This?
http://www.parts-express.com/dayton-audio-mca2250e-21-channel-class-d-plate-ampl...

Does it need to go very loud?  Party box?  Nearfield?  Fill a room background levels?
Back to top
 
 
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #2 - 05/29/16 at 10:18:38
 
Lin,
Yes, that would be the amplifier.
I don't think that it would need to go too loud, my sister lives in an apartment. So I will say it would be for background music that can grab your attention when needed.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Lin
Seasoned Member
****




Posts: 293
Re: The next project after the last one
Reply #3 - 05/30/16 at 17:02:14
 
Target project cost?
Back to top
 
 
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #4 - 05/30/16 at 20:21:06
 
I think I can do it for $250 . She really could care less how well it sounds, but I have principals .
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Lin
Seasoned Member
****




Posts: 293
Re: The next project after the last one
Reply #5 - 05/30/16 at 21:56:16
 
Undecided

$52 each Tang Band 5" paper fullrange  8 ohm  0.2 cu ft sealed
http://www.parts-express.com/tang-band-w5-2143-5-paper-cone-full-range-driver-8-...

$43 Dayton 6.5" "subwoofer" Roll Eyes 4 ohm  0.2 cu ft sealed/0.5 cu ft vented
http://www.parts-express.com/dayton-audio-dcs165-4-6-1-2-classic-subwoofer-4-ohm...
Back to top
 
« Last Edit: 05/30/16 at 21:56:39 by Lin »  
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #6 - 05/30/16 at 22:27:56
 
Thanks Lin, I had been looking at the Tang Band's but hadn't noticed the Dayton.
I will check me Email for the inevitable Parts Express flier with 20% off.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #7 - 08/06/16 at 13:41:31
 
Well, I have gotten myself into another project that may or may not work.
We have to do stretches at work every morning (Because we are industrial athletes, lol) by the direction of a video.
If you can imagine 25 tool makers and a half dozen engineers grunting and groaning in an fairly large space trying to hear the counting on the video coming through a sound bar on a monitor, you would soon figure out that we would need some sort of sound reinforcement.
So a project was assigned to me to "up the volume" as cheaply as possible, using materials that we have available to us.
I came up with a plan of building a simple wedge shaped speaker box and using 2 GRS 8" Bofu full range drivers being driven by a cheap chip amp, all from Parts Express for around $60.
I had a extra sheet of MDF laying around my place that I would donate to the cause, and plans were made for a group project on a Saturday to knock it out.
Well, this is where the project fell off of the tracks!
A idea was brought up of cutting the MDF panels at work because we have some really nice machine tools at our disposal.
Well all of a sudden it was brought up that an aluminum top on the speaker would look nice and by the end of discussion it had turned into making the whole damn thing out of aluminum!
So currently we have a apprentice tool designer drawing up plans in Creo CAD, a sheet of scrap 10mm aluminum, a water jet, two apprentice tool makers, and myself working on this project.
It will be a 4 cubic foot 60 degree triangle mounted to a 10 foot I beam when done. I really hope that it is louder than the sound bar!
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Lin
Seasoned Member
****




Posts: 293
Re: The next project after the last one
Reply #8 - 08/06/16 at 17:30:56
 
Use 4 drivers. Smiley
Back to top
 
« Last Edit: 08/06/16 at 17:31:09 by Lin »  
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #9 - 08/09/16 at 22:44:10
 
This project is gaining traction. The drivers and amplifier arrived this morning, the CAD files were finished and transferred to the water jet.
The Apprentice that is in charge of this project promises me that I will be listening to the completed speaker tomorrow. I figure that it will be closer to Friday, but I don't have his youthful exuberance.
As a training tool, this project has been very useful. The Apprentices get a taste for putting in the needed work to detail something out.
I gave them my basic idea for the speaker, they had to figure out how to manufacture it, how to assemble it, and how to finish it out.
I don't think that we will be getting into the speaker business any time soon, seeing that we used $12 drivers and a $30 amplifier and put them into $1200 worth of aluminum with around $1500 of CAD time!
I'll get some pictures as the cutting and assembly get rolling tomorrow.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #10 - 08/10/16 at 22:31:51
 
Photo's!
Waterjetting the baffles


The sheet of aluminium.


The baffles after they have been cut out.

Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #11 - 08/13/16 at 04:10:13
 
We got the speaker up and running today. It sounds remarkably good for a big aluminum wedge with a real cheap chip amp.
The sound was echoing all over the shop, and it is a very large shop!
We hope to get it mounted to the 10' pole Monday.
The Apprentice did a more than passable job.

Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Lonely Raven
Seasoned Member
****


Jack of all Trades,
Master of None

Posts: 2842
Re: The next project after the last one
Reply #12 - 08/30/16 at 19:02:22
 

Wow, waterjet cut speaker box. That's pretty awesome!
Back to top
 
 
WWW Lonely Raven   IP Logged
4krow
Seasoned Member
****


IMAGINE WHIRLLED
PEAS

Posts: 817
Re: The next project after the last one
Reply #13 - 09/09/16 at 22:48:26
 
 You know, it would be very easy get customer base with products like those! Water jetting is endless for ability to manufacture.   still makes my head spin.
Back to top
 
 

Decware 34I.3 integrated amp/Forte' 3 bass amp/Velodyne SMS-1 bass mngmnt system/Decware ZOB speakers/BESL subs/Emotiva ERC3 CD player/BPT 3.0 power cond. PS Audio P500
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #14 - 09/10/16 at 00:13:04
 
Waterjet isn't a big deal. Ours are just XY coordinates with the Z only used for thickness adjustment. Some of the 5 axis are trick, but still limited.
Now the real trick stuff is 3D printing. If you can draw it, we can make it.
I was just given a demonstration of 3D printing cores and flasks for castings. It makes the patternmaker in me very scared. No need for draft, impossible shapes can now be cast. Real cool tech.
Cutting the speakers out of aluminum didn't really take too long, maybe 2 hours. The cost of the material is outrageous, somewhere between $1200-$1400 per sheet. But it was laying there from a project that had been killed.
The best thing about the whole project is that other sections of the building are complaining that our "Tower O' Power" is blasting louder than their PA systems!  The building is huge, a little over 1.5 million sqft!
We make our presence known!
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #15 - 12/22/16 at 19:03:45
 
There are currently 5 engineers designing new speaker designs in my cubical. It is a slow day at work.
The current design is a open baffle/ downward firing sub hybrid.
They are also talking Omni's.
I wonder if Corporate would approve.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
4krow
Seasoned Member
****


IMAGINE WHIRLLED
PEAS

Posts: 817
Re: The next project after the last one
Reply #16 - 01/05/17 at 05:45:28
 
Make corporate listen to them first Wink
Back to top
 
 

Decware 34I.3 integrated amp/Forte' 3 bass amp/Velodyne SMS-1 bass mngmnt system/Decware ZOB speakers/BESL subs/Emotiva ERC3 CD player/BPT 3.0 power cond. PS Audio P500
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #17 - 02/18/17 at 14:42:52
 
My Sonotube speaker building projects are gaining traction.
Calculations have been made on a transmission line subwoofer using a 10" Dayton driver. It looks like a 10" tube should be 89.13" long to achieve 37.7hz. Nothing like a 7.5' tall sub.
I'm planning to use this in my garage stereo. Most likely building a pair because it would annoy the neighbor more!
I am pondering on how to power these things. Do I use a cheap crossover and connect them to my Wadia DAC amp, or do I go with some sort of outboard amp with an adjustable crossover?
If this idea lives to fruition the next project would be using larger diameter Sonotube to make a full range speaker using the drivers from my DM clones. My CAD Monkey drew up a horn idea inside of a 24" tube. Real interesting but somewhat difficult to make the shape of the baffle. No hill for a climber.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #18 - 03/04/17 at 00:26:56
 
Well I settled on  12" Goldwood woofers and some Dayton 100 watt plate amps.
A quick trip to Menards tonight yielded a couple of 4' long 12" diameter Sonotubes. I then just taped them together and stuck a woofer inside.
Things got interesting after that. With no stuffing or even sealing the bass is very noticeable, even moreso outside.
There is still a lot of development work to do, a proper box built and then build the twin to this one.
Fun shit!

Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Lonely Raven
Seasoned Member
****


Jack of all Trades,
Master of None

Posts: 2842
Re: The next project after the last one
Reply #19 - 03/05/17 at 06:39:27
 
Wow, that is quite a sono-sub!

Did you calculate the airspace at all? Wouldn't a single 4' tube have been enough?
Back to top
 
 
WWW Lonely Raven   IP Logged
Lonely Raven
Seasoned Member
****


Jack of all Trades,
Master of None

Posts: 2842
Re: The next project after the last one
Reply #20 - 03/05/17 at 06:41:03
 
Oh wait, you did say this was a Transmission line of some sort? So it's wide open on the bottom (non-speaker) end?
Back to top
 
 
WWW Lonely Raven   IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #21 - 03/05/17 at 10:15:11
 
It is a quarter wave transmission line subwoofer. So yes it is more or less open, the driver on the bottom.
I stuffed it 2/3 of the way up with fiberglass and it helped it a lot.
The plan now is to make a box on the bottom to face the woofer out and help seal the whole thing up better.
The combined length of the line needs to be 93 inches.
I don't foresee any lacking of bass with two of them.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #22 - 03/25/17 at 22:06:23
 
Well, I "finished" my subs last weekend. Sorry that I took so long reporting back, I had a bad cold and some kind of heart thingy that required a bit of hospital time this week.
Anyway, I decided to go the whole on "Hillbilly" method on these subs.
All that it took was 4 ea. 12" store brand Sono tubes, a roll of red duct tape, some zip ties, 2 ea. Goldwood 12" woofers, and 2 ea. Dayton 100 watt sub amps.
All I did then was cut a 45 degree angle a couple of feet in on what would be the bottom tube, rotate it 180 degrees to get my 90 and start taping them back together. Simple, effective, cheap, and ugly. But so what, it is for my garage.
So far, with very limited listening time, I am very happy with what I have wrought. Some time needs to be spent working with stuffing it.
The whole garage stereo pulled 104 DB with the door closed, it should make the neighbors real happy.
By the way, if you have chest pain that knocks you down a couple times a day for 3 weeks, the Doctors get real mad at you for not coming to see them sooner!
Photos:




I'm real proud of this one

Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
Core32
Seasoned Member
****




Posts: 1634
Re: The next project after the last one
Reply #23 - 03/26/17 at 01:20:48
 
Donnie,
Those remind me of something I once saw in a Cheech and Chong movie I do believe.   Tongue
Back to top
 
 
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #24 - 03/26/17 at 01:48:12
 
Well Core, you have just named my subs.  They will now be forever known as the Cheech & Chong memorial quarter wave subs.
Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
4krow
Seasoned Member
****


IMAGINE WHIRLLED
PEAS

Posts: 817
Re: The next project after the last one
Reply #25 - 04/01/17 at 14:14:16
 
 Got a kick out of these. Same idea as my bucket bass project. Just stuff that I had laying around, and a real deal on an 18" woofer.
 BTW, I hope that heart stuff works out good for you. There are too few of us staying young these days.
Back to top
 
 

Decware 34I.3 integrated amp/Forte' 3 bass amp/Velodyne SMS-1 bass mngmnt system/Decware ZOB speakers/BESL subs/Emotiva ERC3 CD player/BPT 3.0 power cond. PS Audio P500
  IP Logged
Donnie
Seasoned Member
****


Why does it hurt
when I pee?

Posts: 1072
Re: The next project after the last one
Reply #26 - 06/18/17 at 01:47:42
 
So I spent the whole afternoon today cleaning and organizing my garage, and playing my "Cheech & Chong Memorial " quarter wave subs.
I'm pretty sure that everyone in earshot is hating me now.
It seems that the bass notes are a lot louder outside than inside the garage. I guess that it is like the cars that go thumpety thump as they drive down the mean streets of Decatur!
Anyway, it really does play loud and clear.
It is time for me to make something different now, I'm open to suggestions.
A photo of the end product.

Back to top
 
 

Owner of the infamous RED TORII
  IP Logged
4krow
Seasoned Member
****


IMAGINE WHIRLLED
PEAS

Posts: 817
Re: The next project after the last one
Reply #27 - 06/18/17 at 04:45:47
 
Dam good job cleaning out the garage! That was the project, right? Speaker projects are endless and a rest is ok for now, however.... Try something out of your regular stuff. No not explosives, but something in audio. I did. Cool thing is, you learn from the new experience. My new thing for now is headphones, and I had no idea how much they have improved.
Back to top
 
 

Decware 34I.3 integrated amp/Forte' 3 bass amp/Velodyne SMS-1 bass mngmnt system/Decware ZOB speakers/BESL subs/Emotiva ERC3 CD player/BPT 3.0 power cond. PS Audio P500
  IP Logged
Lonely Raven
Seasoned Member
****


Jack of all Trades,
Master of None

Posts: 2842
Re: The next project after the last one
Reply #28 - 06/19/17 at 16:42:14
 

Well, you know me. I'd vote you make some diffusers.

If you can cut some foam insulation, and maybe cut some 1/8" MDF - I can design it for you...you just need to make the mess of making big panels into little panels, then gluing them together into pretty patterns.

Back to top
 
 
WWW Lonely Raven   IP Logged
Lonely Raven
Seasoned Member
****


Jack of all Trades,
Master of None

Posts: 2842
Re: The next project after the last one
Reply #29 - 06/19/17 at 16:48:13
 

I'm pretty sure I could even design something that's just foam insulation. Anyone can cut that without special power tools or hot wire...assuming your careful (unlike my recent incident).


Something like this could be done:












Back to top
 
 
WWW Lonely Raven   IP Logged
Steve Deckert
Administrator
*****


If the 1st watt
sucks why continue?

Posts: 3024
Re: The next project after the last one
Reply #30 - 06/20/17 at 05:34:47
 

From several perspectives, that is just stunning!  Probably the coolest looking small room I've seen... possibly ever.   Great job.


Steve
Back to top
 
 
WWW   IP Logged
Pages: 1
Send Topic Print