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Thinking about a project (Read 960 times)
Donnie
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Thinking about a project
07/05/14 at 21:53:42
 
I ended up with a spare week on my hands towards the end of July and I got thinking about a good project to keep me from annoying everyone. So now I'm thinking about building myself some garage speakers.
At first I was thinking about making something like these Blumenstein Thrashers.
The parts are cheap and the build quality doesn't look taxing.
I also found another project going on online that is a different version of the same idea. http://localhifishop.com/tweek-geeks-summer-speaker-project/  
I then started thinking of building some sort of clones of DM945's. Again the buy in isn't bank emptying. Another thought was to build something a little larger using the same drivers as the DM's.
Believe me, I'm not trying to put Steve and Bob out of business, I'm just wanting something to mess with and to use some of my rusty pattern making skills again.
Anyone have any ideas for something else to make. Again, it is for my garage, so their main usage is to play a little on the loud side and annoy the heartless bastard bloodsucking lawyer who lives across the  road!
I'm pretty open for suggestions, throw them at me, I'm a grown man, I can take it.
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Lin
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Re: Thinking about a project
Reply #1 - 07/06/14 at 00:23:31
 
"so their main usage is to play a little on the loud side and annoy the heartless bastard bloodsucking lawyer who lives across the  road!"

http://www.decware.com/newsite/Pro12.htm
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« Last Edit: 07/06/14 at 18:47:13 by Lin »  
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4krow
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Re: Thinking about a project
Reply #2 - 07/06/14 at 17:39:10
 
Now Lin, you have no viable 'proof' that he is an actual blood sucker. That is what we call here say, yes pun intended.
Ok, now this is where audio can get really glorious for me. I wanted to introduce a boss of mine to better speakers. With him being real tightwad, $200 was the entire budget. I got some Audio Nirvana 8" drivers for about $150, and had scrap wood, and other supplies that helped me meet my goal. It actually ended up at $208. The point is, they sounded way to good to believe, and THAT would be my choice for garage speakers.
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4krow
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Re: Thinking about a project
Reply #3 - 07/06/14 at 17:59:32
 
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« Last Edit: 07/06/14 at 18:02:39 by 4krow »  

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
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Donnie
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Re: Thinking about a project
Reply #4 - 07/06/14 at 21:12:02
 
Now 4krow, Lin is just quoting me about the "Bloodsucker".
I just checked out the Audio Nirvana website, pretty interesting stuff.
The DM945 clones are still at the top of my list right now. Time will tell.
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Lin
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Re: Thinking about a project
Reply #5 - 07/06/14 at 21:52:56
 
I added the quote after 4krow posted. Huh

(to emphasize your wanting speakers that will play loud)
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« Last Edit: 07/06/14 at 21:53:19 by Lin »  
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4krow
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Re: Thinking about a project
Reply #6 - 07/06/14 at 22:03:28
 
You can always go with horns! HA! I can't even say it W/O laughing. Good Lord, imagine that.
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Donnie
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Re: Thinking about a project
Reply #7 - 07/07/14 at 23:30:25
 
I put in my order for a pair of Silver Flute 8"'s and a pair of Hi-Vi RT1C-A tweeters today.
So it looks like DM clones unless I can find something else to put them in.
Wish me luck, I haven't a clue what I am doing. But that has never stopped me before.
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Lonely Raven
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Re: Thinking about a project
Reply #8 - 07/07/14 at 23:41:48
 

Cool! I look forward to seeing what you do with this!

Palomino made some speakers along those lines...maybe ping him?

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Donnie
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Re: Thinking about a project
Reply #9 - 07/08/14 at 23:51:38
 
Well a box from Madisound just arrived. I still don't have a clue of what I am going to do with all of this stuff. The possibilities are unlimited, but the results may vary.
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Donnie
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Technical questions
Reply #10 - 07/12/14 at 16:26:56
 
Yesterday I had one of my CAD monkeys draw a box up for me and some questions came up.
What material should these be made from? Solid wood, MDF, plywood? I went to the local Lowe's and saw that the price wouldn't change that much  between any of the materials. I like the idea of solid wood, but would there be cracking or warping problems? I know that MDF machines nice, but it is pretty ugly. But then again the speakers are for the garage. Maybe Birch or Oak plywood is the answer. Any opinions??
Another question that came up is if a port has to be on the inside of the box? As it is drawn now, I am going to cut 3.5" squares and blow a 2.5" hole in them, stacking them to get my length. Yes I know that I can buy a plastic premade port, but why buy when you can make?
Anyway is there any reason why the port has to be on the inside of the box, can it extend out the back of the box?
Also when lurking around the interweb is see that the DM's use shredded cardboard on the inside, anyone have a idea of how much, or is it a ancient Chinese secret? My box is just a smidge bigger than the DM's, the CAD shows right at 1200 cubic inches.  
I really hope that these work, it is a whole lot of fun just getting through the planning stage. As I have said before, I don't have a clue of what I am doing. But you never know how to do something until you do it. The worst thing that can happen is that through some design flaw they catch fire and burn me up. Ha! Onward and upward!
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Lin
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Re: Thinking about a project
Reply #11 - 07/12/14 at 17:17:09
 
Baltic birch, port can be on the outside.

Have no clue on the shredded cardboard. Huh
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« Last Edit: 07/12/14 at 17:18:19 by Lin »  
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Lonely Raven
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Re: Thinking about a project
Reply #12 - 07/12/14 at 19:06:10
 
Donnie,

I agree with what Lin said. Baltic Birch is solid, doesn't resonate easily, and can look decent. I like MDF for it's density, but unless you coat it with something, it gets ugly pretty quick. Either material, a great and durable exterior can be done with spray on or roll on truck bed liner.

As for the shredded cardboard - that's more to break up internal sound reflections/standing waves. It's not like polyfill really where polyfill tricks the speaker into thinking the air in the box is more dense. I think the rule for either material (cardboard/polyfill) is something like 10%, then adjust to taste. I think Zygi uses some sort of shredded/perforated cardboard in some of his speaker designs. IMHO, if it were me, I'd probably do some cardboard and polyfill - it might get the best of both worlds.
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Donnie
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Re: Thinking about a project
Reply #13 - 07/22/14 at 00:19:10
 
Well, I just finished hacking up some Baltic Birch plywood. My skills really have diminished.
I'm pretty sure I have everything cut to more or less to the correct size, now it is time to "bolt her together".
After that I will have to see how my soldering skills have eroded. I can see myself catching the speaker boxes on fire and burning the place down.
By the way, I'm having a blast. I know that they won't sound great, but it is the journey not the destination.
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Lonely Raven
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Re: Thinking about a project
Reply #14 - 07/22/14 at 06:15:18
 

Well said, Donnie!
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