AudioNervosa

The Market => Manufacturer News => Topic started by: Brian Bunge on March 30, 2008, 03:54:05 PM

Title: Latest Project
Post by: Brian Bunge on March 30, 2008, 03:54:05 PM
So I've been wanting to build myself some new speakers for quite some time. And I've also been wanting to build some curved cabinets as well. Well someone contacted me about building some cabinets and helping out with the crossover design for some drivers he already had and he also wanted curved cabinets. So we worked out a deal to swap off some labor. He'd work up the CAD drawings for me to offset the added labor of the curved cabinets vs. normal rectangular cabinets. The best part is that the same basic cabinet will work for both of our designs.

So these are an MTMWW design with some LCY ribbon tweeters, Seas Excel 5" mids, and Scan Speak 7" woofers. The mids and woofers are not ones I've seen before. They are both 16 ohm versions so that wiring in parallel yields an 8 ohm load.

So here are some pics of the skeletons of his cabinets. Once the sides are attached the cabinets will be roughly 48"H x 9.5" wide at the front baffle and 5.5" wide at the back and 15.25"D.

(http://www.radhometheater.com/photos/paul_skeletons_2.jpg)

(http://www.radhometheater.com/photos/paul_skeletons_3.jpg)

(http://www.radhometheater.com/photos/paul_skeletons_4.jpg)

Here's one of the cabinets next to my current, and huge, MTMWW's. (Still for sale, btw)

(http://www.radhometheater.com/photos/paul_skeletons_compare_1.jpg)

(http://www.radhometheater.com/photos/paul_skeletons_compare_2.jpg)

Mine will be an WTMWWW and won't require a mid enclosure. There will also be a WWT/MWW center channel. There will also be a smaller TMWW tower and WT/MW center, and all speakers will have an 8 ohm load. One really annoying friend is also asking for a bi/dipole surround but we'll see if that happens or not.  The drivers will use either 2 or 4 RS180's for woofers, the RS52 2" midrange and the RS28a tweeter.  I will be building the TMWW towers for a customer as soon as these are finished.

Oh yeah, and there will be a curved cabinet subwoofer, too! ;)
Title: Re: Latest Project
Post by: Black Sand Cable on March 31, 2008, 12:27:21 PM
Nice!

Keep the pics coming!
Title: Re: Latest Project
Post by: Brian Bunge on March 31, 2008, 12:43:53 PM
Oh, don't worry!  I will!  Too bad the TMWW's will be in black oak.  But I guess for a theater room that works well for most people.  And it'll be a LOT cheaper than the Macassar Ebony that I'll probably be using on mine.
Title: Re: Latest Project
Post by: Black Sand Cable on March 31, 2008, 06:22:50 PM
Brian, just out of curiosity, why are you using a ribbon in this design?
Title: Re: Latest Project
Post by: Brian Bunge on March 31, 2008, 08:51:22 PM
The drivers were chosen by the customer.  That's what he sent me, so that's what we're using! :)
Title: Re: Latest Project
Post by: ik632 on April 01, 2008, 07:04:29 AM
Those are definitely looking nice. Without revealing any trade secrets are you going to bend the material around the sides, or have it cut so that it fits without bending?
Title: Re: Latest Project
Post by: Brian Bunge on April 01, 2008, 01:28:38 PM
I'll simply be cutting grooves into the 3/4" MDF so that it will bend around the curve.  I've done a test piece and it seemed to work pretty well.  With some wood glue and brad nails it should be fine.
Title: Re: Latest Project
Post by: Brian Bunge on April 02, 2008, 09:03:15 PM
Here's a rendering of what the subwoofer enclosure will look like.

(http://www.radhometheater.com/photos/taiko_sub_pic.jpg)
Title: Re: Latest Project
Post by: ik632 on April 03, 2008, 09:47:12 AM
I've seen that bendy board before (I think it's 1/4 or 1/8 thick but is basically cut with slits down the length to bend around stuff like that. I really like the curved designs. I'm trying to convince my wife to let me upgrade to larger speakers in the living room from the small bookshelf speakers on stands we currently have.

That's pretty sharp looking. Looks like a SW rendering. I also do solid modeling on the side (have a small business) so if you need any other mockups I'd be glad to help out.
Title: Re: Latest Project
Post by: Brian Bunge on April 03, 2008, 03:29:00 PM
Yeah, I've never understood that.  I tower with the same footprint as the monitor shouldn't be objectionable.  But for some reason it is for some people.  I also like the flexibility of using a lower xo point when crossing to a sub that you normally get from the added bass extension from a tower with multiple woofers vs. a monitor with only one.

I'll keep you in mind about the SW renderings.  I guess as long as Paul needs speakers we'll be trading out labor! :)
Title: Re: Latest Project
Post by: ik632 on April 25, 2008, 12:39:55 PM
Any new pics on the progress? I'd love to see these when you have them completed. It's inspiring me to build some new speakers for home  8)
Title: Re: Latest Project
Post by: Brian Bunge on April 29, 2008, 04:45:47 PM
I've been extremely busy with the damn full time job and family commitments the last few weeks so there isn't any real progress to show.  I'm hoping that'll change this weekend.

In the meantime, here's what the mid/tweeter faceplate for my own line of speakers will look like.  Initially the logo probably will not be on them due to cost.  I'd really like to know what you guys think of the logo though.  I think it's kind of retro and contemporary at the same time.  I really love it! :)

(http://www.radhometheater.com/photos/midtweeter%20plate_logo.png)
Title: Re: Latest Project
Post by: richidoo on April 29, 2008, 06:39:39 PM
I love it Brian. Especially the font, nicely retro, but space age sleek, with a touch of Miami Beach 1920s flair. Paint the speakers peach, cream and light aqua and you will be featured in architecture magazines... I don't quite get the circle part, I guess it is a tuning fork ringing with sound waves emanating forth into the ethers??  The blank white space under the tuning fork is throwing me off. But I'm not too bright this time of day

Maybe you can find a local CNC laser or router who can make the cut for you cheap. There are a lot of woodworking hobbyists who have small CNC tables, all of them would like to have income. They usually take DXF.. Check the shopbot forum for locals.
Title: Re: Latest Project
Post by: stereofool on April 29, 2008, 06:47:34 PM
I don't quite get the circle part, I guess it is a tuning fork ringing with sound waves emanating forth into the ethers??  The blank white space under the tuning fork is throwing me off. But I'm not too bright this time of day

Rich...that's got to be the sound waves radiating out from the speakers  :rofl:!
Title: Re: Latest Project
Post by: Carlman on April 29, 2008, 06:52:44 PM
I like it too, Brian... Very nice.  I 'tweaked' it a little and came up with this:
(http://www.audionervosa.com/gallery/5_29_04_08_5_49_09.gif)
Not sure if you like that... but I think it communicates the relationship of the tuning device and the resulting soundwaves... dunno.. just a tweak.. I think it looks good either way.

Congrats on going your own way with speaker design.  Can't wait to hear some of your own.  I hope you make a set for a tour or at least an audition or 2 to get the word out about what you're making.

TTYL,
Carl
Title: Re: Latest Project
Post by: richidoo on April 29, 2008, 07:06:28 PM
Yeah, you're right stevo...  :duh

Carl, you are so talented. Nice job. But do you think it looks a little like a radiation warning sign now?
(http://www.orau.org/PTP/collection/warningsigns/ornlspecial.jpg)  (http://www.audionervosa.com/gallery/5_29_04_08_5_49_09.gif)
Just kidding! it really does look good.
Title: Re: Latest Project
Post by: Brian Bunge on April 29, 2008, 07:10:34 PM
Guys, thanks for the responses!  Actually, you're all somewhat right and slightly wrong.  Bunge was an occupational name for a kettle drummer in an orchestra in Germany back in the day.  I told the guy that designed the graphic that I was looking for something that was sort of a abstract representation of a drum.  So what you see is a drumstick or mallet and what I envision is a drum head and/or sound waves radiating away from the drum.

Rich, with that color scheme I could probably sell quite a few to the Dolphins fans down here.  Hell, if I had the right room I might even want a pair in that finish.  It'd go well with my Dan Marino autographed football, t-shirt and plaque.  I personally handed him the shirt and football for the autographs so they hold some sentimental value to me.

My wife has given the go ahead for Macassar Ebony veneer for my own personal pair.  Unfortunately, I'll have roughly $1200 in veneer alone for the entire 5 speaker and subwoofer setup.

P.S.  I think I prefer the graphic as is!  Thanks anyway though, Carl! ;)
Title: Re: Latest Project
Post by: Carlman on April 30, 2008, 06:28:42 AM
P.S.  I think I prefer the graphic as is!  Thanks anyway though, Carl! ;)
No prob... I like it as-is also.. Especially now that it has a nice story to go with it! :)  Maybe put that kind of stuff in your 'about us' section... one day..
-C
Title: Re: Latest Project
Post by: Brian Bunge on May 05, 2008, 06:10:35 PM
OK, I got the sides attached to the cabinets.  Now I just need to trim everything flush.

(http://www.radhometheater.com/photos/paul_sides_1.jpg)

(http://www.radhometheater.com/photos/paul_sides_2.jpg)

(http://www.radhometheater.com/photos/paul_sides_top_1.jpg)

Title: Re: Latest Project
Post by: richidoo on May 05, 2008, 06:16:11 PM
That is very cool Brian. Why is the bottom driver smaller than the other two woofers? How do you seal the bending grooves after gluing, so they don't leak air?
Thanks
Rich
Title: Re: Latest Project
Post by: Brian Bunge on May 05, 2008, 06:23:08 PM
Hi Rich!  That's actually the hole for the 3" flared port that will be on the front of the cabinet.

I will be capping off the top and bottom of the cabinets with 1/8" hardboard so there will not be any air leaks.
Title: Re: Latest Project
Post by: Dougie085 on June 21, 2008, 08:48:03 AM
Where you been Brian? Any update on these? I haven't seen you online in a couple weeks so can't ask you.
Title: Re: Latest Project
Post by: richidoo on June 21, 2008, 02:48:35 PM
We ain't seen you much either Dougie, how's new brat treatin you, and how's momma? Getting back to norm I hope?
Title: Re: Latest Project
Post by: Dougie085 on June 25, 2008, 07:32:07 PM
They are good, tooth is treating me worse then them at the moment gotta get it taken care of soon. This forum is just not super active so I don't find a lot to talk about sometimes and then there is also the fact I'm constantly busy.