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Dual GJALLARHORNs! - Page 6

post #151 of 758
Quote:
Originally Posted by LTD02 View Post

iirc, ricci designed the gh to fit a form factor.

by allowing for a different form factor with approximately the same total enclosure volume, the build could probably simplified quite a bit.

I think you are correct. He was trying to get to fit it into a predefined space.

But, getting him to refold it does not sound likely with the time involved.

I would love to have one folded 24 X 32 X ??, where ?? can be any reasonable length up to 72"....whatever is required for the similar performance.

With the shorter dimension one way (32") it could be used as a couch table in most cases.
post #152 of 758
There are a ton of different angles and expansions in the GH it is not just a simple expansion like most DIY TH's. Part of this is because of the compact form factor (If 28cu ft external can be considered that) and part is for the performance. Allowing the cabinet to be whatever form works out to be easy to fold is far simpler. Someone else can come up with a simple fold. I have other projects that require my efforts. There is a little more to horn design than just getting a response that looks "ok" though.
post #153 of 758
Quote:
Originally Posted by Ricci View Post

There are a ton of different angles and expansions in the GH it is not just a simple expansion like most DIY TH's. Part of this is because of the compact form factor (If 28cu ft external can be considered that) and part is for the performance. Allowing the cabinet to be whatever form works out to be easy to fold is far simpler. Someone else can come up with a simple fold. I have other projects that require my efforts. There is a little more to horn design than just getting a response that looks "ok" though.

After taking a look at the picture of the drawing of the enclosure on your site - holy crap! In reality it really is a 'compact' size given it would take many less competent subwoofers to create the same output.

Are your plans available for download on databass?
post #154 of 758
Quote:
Originally Posted by LTD02 View Post

"If anyone is in the SoCal area let me know. I have a CNC and would be more than happy to let it slice and dice for a while."

that is really cool. what kind of machine? just out of curiousity, is it difficult to program a cut plan? for example, if somebody uses a panel optimizer, then sends a file with the panel layout, is it a great big pain to program a cut plan or is it relatively trivial? and last annoying question, is it 2d or can edges of panels be cut on an angle?

i've been thinking that with all the cnc machines around having a portable cut plan file that folks can share around for complex builds like this one makes a ton of sense.

The machine is a home-built 60"x100" CNC Router. Load the whole sheet, clamp it down and away you go. It is great at 2d, and does a good job (albeit slow) for 3d. Basically, you create the individual parts in one file and then let it lay them out as it sees fit. The programming on this seems fairly straight forward. Example, all the interior panels are simple 2d cuts that I would let the cnc cut out, and then I would put the angles on them at teh table saw. The big side panels would need the dado's cut and that would take a while to program, but if you think about it, it is just one pocket cut after another all at different angles. It is not rocket science. Edges can be done...slowly... . I am still learning and practicing which is why I am willing to do this for basically free + materials/consumables.

Many CNC's do use a DXF file format as a starting point. Think of it as an autocad file...one that is accurate in terms of dimensions. That part is fairly universal. Taking that DXF and then converting it into tool language can be handled multiple ways. Think of a cnc as a big, unforgiving, etch-a-sketch.
I dont want to hijack this anymore that I already have so if anyone is interested...PM me. ~ Joel
post #155 of 758
Wow, that is cool!
How much do you have into this beast?

You are very fortunate to have access to that. It would be interested to see that gear in action. cool.gif

If I lived near you I would be over TODAY!
post #156 of 758
This guy seems to be making a good offer. Hell I might send you some things and see what you think of doing them.

Urapnes1,
Can you pm me your email? Where are you located?
post #157 of 758
post #158 of 758
Quote:
Originally Posted by Gorilla83 View Post

DIY CNC's FTW:

http://buildyourcnc.com/blackFoot48v40.aspx

Amazing, and affordable too!
If more DIYers were close to me, I might be inclined to buy one.

You could recoup your costs fairly quickly if you charged a reasonable fee for jobs. $100 would be well worth the time it would save someone.
post #159 of 758
I actually found a place 5 miles from me!!

My buddy has a son in a vocational school were they have a 4x8 sheet router!

The only problem is that files have to be in CAD format in order to load in the machine. UGH!
I have not had any CAD since my freshman year in college and I sucked at it and hated it then.

Is there anyone out there that might be willing or perhaps already have it converted to CAD format?
post #160 of 758
Hey guys. Are there any lower cost drivers that can be subbed in for the ultra driver? Cash is tight right now since I'm going to be ordering some of the seos gear shortly... Weren't these originally used with the lms-r?
post #161 of 758
Quote:
Originally Posted by rr14 View Post

Hey guys. Are there any lower cost drivers that can be subbed in for the ultra driver? Cash is tight right now since I'm going to be ordering some of the seos gear shortly... Weren't these originally used with the lms-r?

Yes, read through the thread..UXL18
post #162 of 758
Find out what CAD files they want. The file type. I did these in SW's and already have Autocad prints too.
post #163 of 758
Awesome. Thanks. I read the whole thing and bits and pieces several times and missed that!
post #164 of 758
Quote:
Originally Posted by Ricci View Post

Find out what CAD files they want. The file type. I did these in SW's and already have Autocad prints too.

I will inquire about that ASAP. OMG, that would be awesome!
post #165 of 758
Quote:
Originally Posted by jpmst3 View Post

Amazing, and affordable too!
If more DIYers were close to me, I might be inclined to buy one.

You could recoup your costs fairly quickly if you charged a reasonable fee for jobs. $100 would be well worth the time it would save someone.

Interesting machine...In reality there are so many options out there that it is really tough. For those that are interested...look for simplicity. You want something reliable, repeatable, and manageable. There are some designs that are literally works of art, and there are some that are simple. I went with the simple option...less parts to buy, less parts to fabricate, less parts to work loose, less parts to go wrong. I went with an all metal build (mostly aluminum. It is not a solid iron monster, but it is stable and doesn't act up in cold/hot dry/humid.I ended up with a cnc hardware kit, and then added an electronics kit to it. Using 2 well known (and well-supported) kits is a great way to get started.

I tend to disagree with you on the costs that you could charge. Most going rates for cnc time is $65-150 per hour. That is cutting time. Dont forget that you also have programming time. You dont want to make things too cheap because it is your time. As I have told others, the cnc is a hobby for me so I don't care about what my time is worth...yet. But at some point I would. I mean if it took 5 hours to cut a kit...you need to be there next to the machine...you really should not leave them alone...not the home made ones...and not while you are learning! So that would be 5 hours that you cannot get back. I am rambling on...but I think you will follow my logic. I think many folks would be willing to spend 100-200 for a full kit + materials, but i doubt many would want to spend more. Hell, I know that I could knock one of these out in an day with just a router and table saw...at some point people will find another way.
post #166 of 758
Around my area, the CNC guys want $150 to setup (unless you have the proper file, then it's $50) and $100 an hour to cut. I think thats reasonable. though I know for a fact that once it's in the system, the CNC could have everything cut out in 15 minutes. It's the time switching everything in between sheets. If you have someone that does it all day doing all your cutting, they are like lightning!
post #167 of 758
CNC cutting speeds vary greatly by machine
post #168 of 758
Quote:
Originally Posted by urapnes1 View Post

CNC cutting speeds vary greatly by machine

I know but if someone is working on one every day, it's likely a very good commercial unit, like a cabinet maker or similar. All my CNC quotes and times were from fairly big manufacturing businesses. I'm sure a DIY home version isn't even close to the same. These ones had all the bits on rotating heads and the computer switches between them in seconds when needed. I watched them cut out 8 kitchen cupboard doors and do all the detail work in under 5 minutes. Pretty cool stuff.
post #169 of 758
Quote:
Originally Posted by urapnes1 View Post


I tend to disagree with you on the costs that you could charge. .

I am not in disagreement with you at all. Since I am not a professional and not taking from shop time, etc with my theoretical machine, I would only charge minimally to give back the DIY community. I would charge just enough to cover maintenance, etc and a little to put towards the initial cost.
I have no doubt shops would charge several hundred to cut a couple of these. I don't want to make a profit, just cover my costs and help people out.
Edited by jpmst3 - 2/7/13 at 5:21am
post #170 of 758
I understand you. Which is why I am offering precisely what you suggest. Just saying that its great for the community but economically it is a poor choice for the operator.

We need more updates on those that are building these. Where are the progress reports? smile.gif
post #171 of 758
Quote:
Originally Posted by urapnes1 View Post


We need more updates on those that are building these. Where are the progress reports? smile.gif

Exactly, I am dying to see some pix with dust flying around!smile.gif
post #172 of 758
If Ricci sends me the CAD files, I may be able to get a couple of these babies cranked out with little CNC cost.
That is if the students need a project. wink.gif

It should would save a ton of time and allow for a winter activity. My god, I despise winter.
post #173 of 758
JP I'm going back through and cleaning up some of the files and documents. Give me a bit.
post #174 of 758
Quote:
Originally Posted by Ricci View Post

JP I'm going back through and cleaning up some of the files and documents. Give me a bit.

Take all the time you need! You are doing me the favor! smile.gif
I appreciate all the time you have into the project and your willingness to share any of it.
post #175 of 758
Quote:
Originally Posted by jpmst3 View Post

I appreciate all the time you have into the project and your willingness to share any of it.

Amen!
post #176 of 758
Another day without build pix!mad.giftongue.gif

Come on slackers!biggrin.gif
At least I have an excuse, it is 20 degree and we may get 2 feet of snow.eek.gif
post #177 of 758
Thread Starter 
Quote:
Originally Posted by jpmst3 View Post

Another day without build pix!mad.giftongue.gif

Come on slackers!biggrin.gif
At least I have an excuse, it is 20 degree and we may get 2 feet of snow.eek.gif

Ha, I'm in MN and my garage isn't heated.

I picked up a table saw and circular saw yesterday, so tonight and tomorrow I'll have some build pics for you.
post #178 of 758
biggrin.gif

It is probably colder where you are!

Cool! I am looking forward to seeing your monsters come alive!
post #179 of 758
Looks like i could use the CAD files as well. I just got back from checking out the place that actuall will do the cutting and they want 1K to setup and cut. all the other places I've talked to won't be able to do them for at least a few months they said since they are all super busy and it's not really something they do to begin with but would be half of that. If I can get the file, it would be quite a bit less.
post #180 of 758
I'm not going to start building till I get the UXL-18's from mach 5. They are back ordered so it's going to be around three months. I'll be working on speakers first I guess... plenty to keep me busy. smile.gif

I have you all trumped on the cold garage tongue.gif - I'm in Colorado at 10,000ft in an area know for it's high wind. The out building has heat, but it's expensive so I've winterized it and I don't leave the heat on. It was -35 here a few weeks back with 30-40mph gusts.
Edited by steve71 - 2/8/13 at 12:57pm
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