Coaxials: Another DIY Group Project. - Page 12 - AVS Forum
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post #331 of 462 Old 07-05-2014, 04:23 PM
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Erich, which high end coaxial is going to be offer? B&C, your custom one?
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post #332 of 462 Old 07-09-2014, 07:32 AM
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Anymore info on the new high end coaxials?

And Erich can the DNA150's be used with the Eminence 8" coaxial speaker?
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post #333 of 462 Old 07-09-2014, 01:01 PM
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Quote:
Originally Posted by chrapladm View Post
Anymore info on the new high end coaxials?

And Erich can the DNA150's be used with the Eminence 8" coaxial speaker?
The DNA-150 and the Eminence 8" coaxial are both in the V-8 Volt kit so I would assume they can be used together.
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post #334 of 462 Old 07-09-2014, 07:39 PM
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I assumed but had to ask. Thanks DD. I have been looking at trying to build a cheap SM100 but using an 8". So owning the DNA150 already I figured I might try and just use this 8" or possibly 10" coaxial in my clone.

Erich can you buy the 8/10" coaxial speaker without the baffle?
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post #335 of 462 Old 07-10-2014, 04:15 AM
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post #336 of 462 Old 07-10-2014, 04:47 AM
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The 8 is more expensive than the 10. LOL Good option but I would still have to buy more 150's and crossover parts. So the volt is an all in one place. I could use my 150's I have already but I would rather just buy the whole package in one place. Either way I will do what I have to.
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post #337 of 462 Old 07-10-2014, 05:21 AM
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Quote:
Originally Posted by Erich H View Post

There was talk in the SEOS thread about getting higher end completed boxes made up for some of the nicer designs. I've been looking into that over the past month or two. So we can cross that road when we get there.
I saw your post on completed boxes in the rallying thread. Just a suggestion:

Look into developing boxes that use either kerfing or channels to assemble. This makes construction of non square enclosures possible and actually enhances the performance of the speaker. I don't mean curved enclosures you can cnc channels in the mdf and the box just folds together without any seams to contend with. You can also veneer the entire back panel and fold the box together without any seams to do and makes the box assembly cost low and product value very very high.

Seaton posted a demo on how their boxes were made sometime back somewhere, the whole box was one piece with channel kerfs. You just veneer back, cnc the channels, insert bracing, fold and glue together, done. It was pretty impressive and I don't think it was proprietary.

Just a thought.
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post #338 of 462 Old 07-10-2014, 05:37 AM - Thread Starter
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The panel normally comes with veneer already installed. The cabinet company simply cuts V-grooves down to the veneer without cutting all the way through. Then you just miter fold the box and you have no seams.

It works great, but they can't be shipped unassembled.
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post #339 of 462 Old 07-10-2014, 05:48 AM
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Yep thats it, I meant for your assembled boxes/speakers.
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post #340 of 462 Old 07-10-2014, 11:59 AM
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Are we considering different speaker designs or the use of different drivers. There were quite a few different discussions going on here.

Last edited by rlhaudio; 07-10-2014 at 01:20 PM.
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post #341 of 462 Old 07-10-2014, 01:50 PM
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So there are drivers, but no pics... We need some meat here...
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post #342 of 462 Old 07-10-2014, 02:53 PM - Thread Starter
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I'll try to get some photos posted in the next day or so. I must have 15 different models here that I tested.

Last edited by Erich H; 07-12-2014 at 12:10 PM.
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post #343 of 462 Old 07-10-2014, 03:51 PM
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Anyone have any idea what the smallest enclosure one would want to go to using a Volt 8? I ask because I'm thinking about using Volt 8's for in-ceiling (with backer box) speakers for Atmos. Think this would be a decent fit for this application? (My surrounds are angled Volt 10s)

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post #344 of 462 Old 07-10-2014, 04:30 PM
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The 10's can get to 100hz pretty comfortable in a box the size of .75 cuft. I would guess the 8's at a little less sensitivity will get there in slightly less, say .6 cuft. I wouldn't go much less than that sealed....

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post #345 of 462 Old 07-10-2014, 06:26 PM
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Are you staying with the standard Volt Coax design using the slanted box?
Is it possible to build a HT speaker as a bi-pole for surround sound use perhaps using a switch for mono vs. bi-pole use? Or is that a pain with XO work?
I already own a few waveguide speakers including 3 Tempests. I was going to purchase the Volt 10 for surround use but if your thinking of making a new HT speaker to match the waveguides I can wait another month.

Last edited by rlhaudio; 07-10-2014 at 06:32 PM.
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post #346 of 462 Old 07-11-2014, 11:30 AM
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I was curious about Atmos speakers myself. I wish they had better papers concerning speaker placement. Distance from viewer, etc. Not sure if I want to place my speakers facing straight down (cube box) or use the angled boxes to allow some directivity. Also the pros/cons between 2 and 4 atmos speakers. I guess in time all will be answered.
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post #347 of 462 Old 07-12-2014, 12:11 PM - Thread Starter
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Here's a picture with most of the different coaxial samples in it.

Attached Images
File Type: jpg coaxial_samples.jpg (186.4 KB, 569 views)
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post #348 of 462 Old 07-12-2014, 12:17 PM
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I like the bottom left one for my surrounds. Is that a 5 or 6" ?
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post #349 of 462 Old 07-12-2014, 12:19 PM
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Love the octagon shaped ones.
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post #350 of 462 Old 07-12-2014, 12:35 PM - Thread Starter
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Bottom left models are 6". The 2nd one over tested good and I did order some, but not many. They get louder than you would think and have a full sized compression driver that shares the magnet with the woofer. The one right next to it on the right is the nice custom 8" model. But I was hoping the dust cap would be slightly different than it is. Next one is FaitalPro, next is B&C.

Top row 2nd over is the 12" Eminence with a screw on BA-750. It's kind of interesting.


I do like the larger octagon models. Those horns sound okay with certain compression drivers, but not all compression drivers. The bolt on BA-750 sounds okay on that octagon 12". I'm going to eventually try to get that larger one made without that type of horn sticking too far out the front. It is a beefy model, but not sure there's a reason to go with a 12" for home use.
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post #351 of 462 Old 07-12-2014, 01:18 PM
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Is that 6" one that tested well the one that can go in a small box ? I want a.small coaxial for surround in my living room. Like .4 to .5 cuft box
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post #352 of 462 Old 07-12-2014, 02:19 PM
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The 8" should still do sufficiently well in a .6 cuft box after bracing and displacement. That small, bracing isn't really that necessary anyways....

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post #353 of 462 Old 07-12-2014, 08:52 PM
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+1 on the 8" with the .6 flat pack. you already have an angled and cube flat pack. Besides, its better to have too much speaker and turn down the volume than not have enough and distort.
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post #354 of 462 Old 07-12-2014, 08:55 PM
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All I know is that I want some high end units that will work well with my JTR's and will fit in the 14" slanted flat pack, point me in that direction and I'm in!
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post #355 of 462 Old 07-13-2014, 02:11 AM
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What is the far right corner monster?

From the basket it reminds me of the Venezuela 6 spoke on 18's but after you described the 12 next to it I figured it must be a 15?

I will be going with coax 8's and 10's. BUT turning down the volume is a good thing. So maybe one of Erichs 12's would be nice.
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post #356 of 462 Old 07-13-2014, 06:24 AM - Thread Starter
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Far upper right is a 15". They didn't make it with the cone I asked for though because it didn't fit the frame right. That one hasn't been tested yet.

The best testing one so far is the third one from the left on the bottom.
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post #357 of 462 Old 07-13-2014, 06:30 AM
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Quote:
Originally Posted by jbrown15 View Post
All I know is that I want some high end units that will work well with my JTR's and will fit in the 14" slanted flat pack, point me in that direction and I'm in!
Ditto
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post #358 of 462 Old 07-13-2014, 06:59 AM
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Quote:
Originally Posted by Erich H View Post
Far upper right is a 15". They didn't make it with the cone I asked for though because it didn't fit the frame right. That one hasn't been tested yet.

The best testing one so far is the third one from the left on the bottom.
Is that the 10"? How did it do and what CD used?
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post #359 of 462 Old 07-13-2014, 07:40 PM - Thread Starter
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It's the 8". The compression driver is built into the back and shares the magnet with the woofer. It does test better than the B&C and FaitalPro.
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post #360 of 462 Old 07-13-2014, 08:06 PM
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These are all custom made ones Erich?

Either way I hope to hear more about these 8" models and also 10" models.
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