Techtalk Speaker Building, Audio, Video Discussion Forum - Blogs - Working with resin enclosures by UGP http://techtalk.parts-express.com/blog.php?9117-Working-with-resin-enclosures en Wed, 19 Jun 2013 20:56:34 GMT vBulletin 60 http://techtalk.parts-express.com/images/misc/rss.jpg Techtalk Speaker Building, Audio, Video Discussion Forum - Blogs - Working with resin enclosures by UGP http://techtalk.parts-express.com/blog.php?9117-Working-with-resin-enclosures a little something for Indiyana 2012... hopefully http://techtalk.parts-express.com/entry.php?222-a-little-something-for-Indiyana-2012-hopefully Wed, 04 Apr 2012 21:59:41 GMT Attachment 26910 (http://techtalk.parts-express.com/attachment.php?attachmentid=26910)1 Click image for larger version.  Name: 2012-04-01_00001.jpg  Views: 898  Size: 87.7 KB  ID: 269101 ]]> UGP http://techtalk.parts-express.com/entry.php?222-a-little-something-for-Indiyana-2012-hopefully Experiments on making own drivers http://techtalk.parts-express.com/entry.php?205-Experiments-on-making-own-drivers Mon, 19 Dec 2011 15:30:51 GMT So I think I'm back on track with my upper enclosure mold and hopefully should be casting before x-mas, took a little longer than expected because I got sidetracked with the idea of making my own drivers, or at least part of one. Looking into making the motor for a conventional speaker is not in my means, so I'm looking into something along the lines of MBL or HEIL drivers using the motor from a cannibalized conventional driver, trying different "cone" materials over the past couple weeks I'm leaning towards the squeezebox method, but for the rest of this week it's back to the upper enclosures, just need to make the mother-mold(supporting shell) and than I can pour!!! ]]> UGP http://techtalk.parts-express.com/entry.php?205-Experiments-on-making-own-drivers Do Over!!! CNCProject-xtended Top Enclosure CNC http://techtalk.parts-express.com/entry.php?203-Do-Over!!!-CNCProject-xtended-Top-Enclosure-CNC Mon, 07 Nov 2011 22:03:38 GMT Okay, so I made a stupid mistake... got all the foam layers glued together and sanded down the rough edged, went to "seal it up", was going to use shellac but didn't have any so went to use some clear urethane, but of course it was out of a spray can and yes of course it attacked the foam... ruined... but now that I have the cnc process down, re-doing it is a snap, plus I thought that the shape was pretty generic anyways so thought I would update it.
So here's what the new form will look like.
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plus this time I'll use a paint brush to apply the shellac;) ]]> UGP http://techtalk.parts-express.com/entry.php?203-Do-Over!!!-CNCProject-xtended-Top-Enclosure-CNC Project-xtended Top Enclosure CNC http://techtalk.parts-express.com/entry.php?201-Project-xtended-Top-Enclosure-CNC Thu, 27 Oct 2011 01:15:52 GMT Was hoping to be further along by now... actually finished by now, but It took a while to figure out the whole cnc process, I was going to update my... Was hoping to be further along by now... actually finished by now, but It took a while to figure out the whole cnc process, I was going to update my machine and ordered parts, but they where taking forever to come in and some of the parts were wrong, (in fact I'm still waiting for parts) but I got it working good enough to finally go ahead.
This is the plug for the main body of the upper enclosure. For reference the enclosures behind it have cutouts for 8" woofers(though these are not for this project) I've still got one more layer add.
Finished enclosure will have the top,bottom, and baffle of wood.
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Click image for larger version.  Name: Image00005.jpg  Views: 167  Size: 31.9 KB  ID: 26908 ]]> UGP http://techtalk.parts-express.com/entry.php?201-Project-xtended-Top-Enclosure-CNC Update- Project-xtended http://techtalk.parts-express.com/entry.php?181-Update-Project-xtended Tue, 17 May 2011 20:48:13 GMT Ok so I've got the protos together, decided to go with 3rd order crossovers, sounds pretty good. Still working on the upper mid-tweeter enclosures, right now just mdf boxes, the crossovers have more components than I would like... actually let me re-phrase that... the values of the components are more expensive than I would have liked, even using a couple electrolytic capacitor and a couple Iron-core inductors, but it is what it is.
Right now for the parts I've got right around $350 not counting the enclosures.
So far they sound worth it. ]]> UGP http://techtalk.parts-express.com/entry.php?181-Update-Project-xtended New Project-Xtended http://techtalk.parts-express.com/entry.php?164-New-Project-Xtended Thu, 17 Feb 2011 05:15:13 GMT So I started the next speaker in my line(making my way up to my mastering monitor project). Staying with the consumer line, it will be a variation on... So I started the next speaker in my line(making my way up to my mastering monitor project). Staying with the consumer line, it will be a variation on the Project-X, this will add a dedicated woofer, still use the Aura ns3 along with a tweeter, so it's a 3-way... a small floorstander ~33"-34" tall, will use a 1st order crossover and be time aligned.

here's the lower woofer enclosure I started tonight this section is 19.5" tall, and one of the pods will be mounted vertically above this.
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]]> UGP http://techtalk.parts-express.com/entry.php?164-New-Project-Xtended Project-x cont.. http://techtalk.parts-express.com/entry.php?159-Project-x-cont Mon, 07 Feb 2011 05:18:56 GMT Couple more pics, didn't show the actual mold making process as there's plenty on the net, wish I had pics of the actually prototype making process that the mold was formed from though, but I hope to improve that process with the CNC. In these pics the white enclosure is actually an experimental substance I'm going to be testing to see if I can improve performance and lower cost, though It takes 3-4 months for it to totally cure, were the resin takes minutes, but I've got a couple other products/combinations to try.
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]]> UGP http://techtalk.parts-express.com/entry.php?159-Project-x-cont Some Pics of my small project-x http://techtalk.parts-express.com/entry.php?158-Some-Pics-of-my-small-project-x Mon, 07 Feb 2011 05:07:14 GMT OK, so my small mistake project will actually turn out to be a pretty cool product. pic1 = mold doing what it does... molding pic 2 = mold apart... OK, so my small mistake project will actually turn out to be a pretty cool product.

pic1 = mold doing what it does... molding
pic 2 = mold apart
pic 3 = plug for cavity of enclosure
pic 4 = now you see where that cavity plug went
pic 5= enclosure out of mold


I'll post a couple more pic but the limit is 5 for this post
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]]> UGP http://techtalk.parts-express.com/entry.php?158-Some-Pics-of-my-small-project-x Back from CES http://techtalk.parts-express.com/entry.php?148-Back-from-CES Thu, 20 Jan 2011 22:24:52 GMT It was fun, a lot of walking and started getting a blister on my foot, I spent the first two days in the convention center than the next two at the... It was fun, a lot of walking and started getting a blister on my foot, I spent the first two days in the convention center than the next two at the Venetian, I didn't get to 'T.H.E show' at all.
There were a few speakers that I really wanted to see/hear but didn't get to them... will have to do better planing next time.
The one thing I'm really pumped about it that it confirms my belief that my speakers will be able to compete at the price points I'm thinking about!:) ]]> UGP http://techtalk.parts-express.com/entry.php?148-Back-from-CES On with the speaker making http://techtalk.parts-express.com/entry.php?146-On-with-the-speaker-making Wed, 29 Dec 2010 17:41:56 GMT So I've decided to make my mistake (http://techtalk.parts-express.com/blog.php?b=120) into a real product, a 5.0 system not a 5.1 as I won't be making a sub and letting people chose their own. Will also incorporate it into a two enclosure system with the the woofer in a separate enclosure (MDF) under the "resin pod" Still deciding on the woofer section, looking at a 5.5-6" driver.

P.S. Can't wait for C.E.S. ]]> UGP http://techtalk.parts-express.com/entry.php?146-On-with-the-speaker-making Update on sidetrack cnc project http://techtalk.parts-express.com/entry.php?134-Update-on-sidetrack-cnc-project Wed, 13 Oct 2010 12:48:46 GMT So I've got my Diy cnc pretty much running and made my first tweeter cutout yesterday, it was just out of pink foam installation and all was going perfectly until my Z axis hit a "stop" that it wasn't meant to. I had screwed my dremel to my z axis, till I get a better spindle setup, and the screws were too long would get stuck on a non-moving part, well luckily my power supply is only about 2/3 the power it should be so my stepper would just loose steps instead of just self-destructing(there only ~280 oz so maybe even at full power they'll skip) anyway I measured what had been cut, and the diameter and the depth for the mounting plate of the tweeter was right on. Still a couple things to change like upgrading the allthread screws to acme at least for the y/z axis' for more speed and getting somekind of bigger tool holder so I can use bigger router bits.

Later ]]> UGP http://techtalk.parts-express.com/entry.php?134-Update-on-sidetrack-cnc-project Related Sidetrack Project http://techtalk.parts-express.com/entry.php?126-Related-Sidetrack-Project Sun, 08 Aug 2010 00:24:16 GMT OK, so my larger project is sounding good, I need to get measurements up, but, in-depth details and pictures will have to wait(as this is a planed... OK, so my larger project is sounding good, I need to get measurements up, but, in-depth details and pictures will have to wait(as this is a planed commercial product) anyway After all the hard work of making the proto enclosure and making a mold of it, I found it is not square, looking at it you can't tell and it doesn't effect the sound, it good enough to design the crossovers and such but it won't do for "Real" product, so because of this and designs of the same process, will also need precision, I'm making a cnc machine, actually I stated it before the start of this current speaker project, but put it on hold as I got antsy to build the speaker. Now that I've got the prototype done I'm antsy to perfect it, so out can the almost finished frame, bought some stepper motors and a controller board, so far I've got the controller board together and got the motors running, tonight I've been evaluating the 3d cad program Rhino3d and I'm putting my order in later tonight. I'm going to run ECM2 for the controller software, as for the CAM program I'm just using Freemill for now.

Anyway till next time! ]]> UGP http://techtalk.parts-express.com/entry.php?126-Related-Sidetrack-Project Compsite Design http://techtalk.parts-express.com/entry.php?122-Compsite-Design Sat, 24 Jul 2010 17:07:13 GMT Here I installed a couple drivers in my first test enclosure 1st was the Aura NS3: Attachment 26881... Here I installed a couple drivers in my first test enclosure

1st was the Aura NS3:

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NS3 No BSC
I've had the ns3 for a few years, first I had it running full-range and thought they sounded harsh on the top-end as you can see why. Even with bsc that peak still would have bothered me so...


2nd the Fountek FR89EX

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With BSC
as you can see much better top-end, much better. Next On to my real project... ]]> UGP http://techtalk.parts-express.com/entry.php?122-Compsite-Design Compsite Design http://techtalk.parts-express.com/entry.php?120-Compsite-Design Sat, 24 Jul 2010 16:42:00 GMT Here's my first "real" trial of using a urethane resin for a small 3" full-range speaker, as you can see the result are pretty good, though it takes a lot of thought and preparation in the actual mold making step with careful planing unique and quickly repeatable shapes can be created.
This is (by accident) about 1/3 as tall as it was meant to be, the sidewalls are 1" thick.


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Click image for larger version.  Name: miniMonolith3s.jpg  Views: 568  Size: 79.8 KB  ID: 26880 ]]> UGP http://techtalk.parts-express.com/entry.php?120-Compsite-Design Compsite Design http://techtalk.parts-express.com/entry.php?119-Compsite-Design Sat, 24 Jul 2010 16:25:19 GMT I've seen people post about using material other than wood and though there are some diy designs from concrete/marble/Corian... This will be my journey though finding a material which is easy to use and has satisfactory properties for loudspeaker enclosures. ]]> UGP http://techtalk.parts-express.com/entry.php?119-Compsite-Design