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Forum: Speakers   02-10-2017, 10:34 AM
Replies: 57
Views: 4,293
Posted By augerpro
So was a Dolby rep going to be involved in this...

So was a Dolby rep going to be involved in this discussion? Guess that was my inference when the article said it would be closed in 4 weeks. Otherwise it's just another Atmos thread, no?
Forum: Speakers   02-08-2017, 03:12 PM
Replies: 57
Views: 4,293
Posted By augerpro
...there is some HP and LP filter in place, it's...

...there is some HP and LP filter in place, it's right there in the patent. Are you the Dolby rep? Because you are really not adding anything to this discussion except speculation.
Forum: Speakers   02-08-2017, 02:55 PM
Replies: 57
Views: 4,293
Posted By augerpro
Look at patent claims 11, 25, 26, and 29. They...

Look at patent claims 11, 25, 26, and 29. They are consistent with the work done in other places, for example sound bars, where the reflective driver has a 500-5000hz band pass filter applied to...
Forum: Speakers   02-08-2017, 12:10 PM
Replies: 57
Views: 4,293
Posted By augerpro
Well you're going to have wide dispersion at low...

Well you're going to have wide dispersion at low frequencies, so the atmos speaker must be high passed somewhere.
Forum: Speakers   02-08-2017, 11:34 AM
Replies: 57
Views: 4,293
Posted By augerpro
That can't be it (or completely it anyway). In...

That can't be it (or completely it anyway). In Google's patent link there are no illustrations included even though they are cited. For some reason I'm not finding at it the USPTO
Forum: Speakers   02-07-2017, 04:31 PM
Replies: 57
Views: 4,293
Posted By augerpro
Couple technical questions I never see info on: ...

Couple technical questions I never see info on:

1) what is the filtering used on the reflecting speakers that incorporates how we hear? I assume it is a bandpass filter, what cutoff frequency and...
Forum: DIY Speakers and Subs   01-27-2017, 01:21 PM
Replies: 8
Views: 227
Posted By augerpro
No he's not a business, just making them for...

No he's not a business, just making them for himself. I would build them, but I traded my house for downtown Denver living so no shop at the moment for me. I have to partner with people to make my...
Forum: DIY Speakers and Subs   01-27-2017, 04:54 AM
Replies: 8
Views: 227
Posted By augerpro
I'll start a thread as soon as the builder sends...

I'll start a thread as soon as the builder sends a few pics the build progress.
Forum: DIY Speakers and Subs   01-25-2017, 10:23 PM
Replies: 8
Views: 227
Posted By augerpro
I have a design being built based around the...

I have a design being built based around the Tectonic Element BMR. It's a little behind schedule but the builder had issues with another speaker he was building and had to solve that first. The BMR...
Forum: DIY Speakers and Subs   01-22-2017, 11:32 AM
Replies: 4
Views: 111
Posted By augerpro
Bill how does Winisd handle end correction?

Bill how does Winisd handle end correction?
Forum: DIY Speakers and Subs   01-18-2017, 11:53 PM
Replies: 21
Views: 597
Posted By augerpro
Another interesting aspect of the paper is the...

Another interesting aspect of the paper is the harmonic distortion measurements. I don't see that dealt with often by DIY'ers, port compression is virtually the only subject. Here they found that the...
Forum: DIY Speakers and Subs   01-18-2017, 04:28 PM
Replies: 21
Views: 597
Posted By augerpro
Can you explain this position a bit more Mark?

Can you explain this position a bit more Mark?
Forum: DIY Speakers and Subs   01-18-2017, 02:51 PM
Replies: 21
Views: 597
Posted By augerpro
LTD02> If you read the Harman paper, that result...

LTD02> If you read the Harman paper, that result does look consistent with a very low NFR port, i.e. nearly a straight port. The compressed quite linearly. The larger flared ones though were...
Forum: DIY Speakers and Subs   01-18-2017, 06:07 AM
Replies: 21
Views: 597
Posted By augerpro
This Harman paper has me a bit confused. Instead...

This Harman paper has me a bit confused. Instead of doing what most of us would do and take a straight pipe and add ever larger radius flares to the end, they make the entire pipe a flare. Going from...
Forum: DIY Speakers and Subs   01-17-2017, 11:53 PM
Replies: 21
Views: 597
Posted By augerpro
No that has a straight section. If I'm...

No that has a straight section. If I'm understanding the paper they use a continuous curve. The also tested elliptic profile, which would have a closer relation to the typical straight section +...
Forum: DIY Speakers and Subs   01-17-2017, 11:31 PM
Replies: 21
Views: 597
Posted By augerpro
The Perfect Port?

So I'm reading the Harman paper on ports, here is a link: https://www.dropbox.com/s/u18zq95ko92hlra/Harman%20Port%20Study.pdf?dl=0. They test various theories regarding flare radius, power...
Forum: Speakers   01-15-2017, 10:15 AM
Replies: 9
Views: 156
Posted By augerpro
I was under the impression that optical fiber was...

I was under the impression that optical fiber was sensitive to run length when using cheaper plastic fiber. High quality glass fiber is needed for long runs. If that is very expensive perhaps a...
Forum: DIY Speakers and Subs   01-08-2017, 12:59 PM
Replies: 5
Views: 311
Posted By augerpro
BTW I ended up going with the RS100-4 over the...

BTW I ended up going with the RS100-4 over the DSA90. Under the base scenario the DSA90 ran out of headroom about the same time as the BMR, a perfect match from an engineering perspective. But...
Forum: DIY Speakers and Subs   01-08-2017, 12:23 PM
Replies: 5
Views: 311
Posted By augerpro
The enclosure specs are with the person I...

The enclosure specs are with the person I partnered with and dust is probably flying right now!
Forum: Speakers   01-08-2017, 01:39 AM
Replies: 5,767
Views: 363,584
Posted By augerpro
That's great to hear! I did a comparo a few years...

That's great to hear! I did a comparo a few years ago with usual suspects: SBA poly and paper cone, Scanspeak Discovery, Peerless Nomex, Dayton Ref, and my favorite was Zaph's ZA14. it's the smallest...
Forum: Speakers   12-22-2016, 12:11 AM
Replies: 10
Views: 143
Posted By augerpro
Where the voice coil former attaches to the cone...

Where the voice coil former attaches to the cone may have separated or cracked.
Forum: DIY Speakers and Subs   12-17-2016, 08:39 PM
Replies: 50
Views: 2,472
Posted By augerpro
I was referring to the Shapeoko 3. I share your...

I was referring to the Shapeoko 3. I share your pickiness with tools and can see how the X-carve might be more flexy than the Shapeoko 3.
Forum: DIY Speakers and Subs   12-17-2016, 04:56 PM
Replies: 50
Views: 2,472
Posted By augerpro
What drives that Shapeoko in the Z axis? Looks...

What drives that Shapeoko in the Z axis? Looks like a tiny little belt?
Forum: DIY Speakers and Subs   12-16-2016, 06:42 PM
Replies: 50
Views: 2,472
Posted By augerpro
For real? Why? Any other sub $1500 machines to...

For real? Why? Any other sub $1500 machines to consider?
Forum: DIY Speakers and Subs   12-16-2016, 08:31 AM
Replies: 50
Views: 2,472
Posted By augerpro
Anyone get that X-carve? I already have the Bosch...

Anyone get that X-carve? I already have the Bosch router and pricing it out without the waste board is only $1053 for me...not bad.
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