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Search: Posts Made By: diy speaker guy
Forum: DIY Speakers and Subs   04-18-2015, 07:14 AM
Replies: 112
Views: 1,468
Posted By diy speaker guy
GH and Othorn are tapped horns, the concept of...

GH and Othorn are tapped horns, the concept of which is patented by Danley. The patent is currently about 8 years old I believe (including patent pending period, which I believe is part of the 20...
Forum: DIY Speakers and Subs   04-18-2015, 06:47 AM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Well that's good news, usually when there's no Le...

Well that's good news, usually when there's no Le listed there's a very good reason for that - they don't want you to know what it is.

Still expensive though, more than I want to pay for any...
Forum: DIY Speakers and Subs   04-18-2015, 12:44 AM
Replies: 112
Views: 1,468
Posted By diy speaker guy
I know all about the Gjallerhorn and the TC...

I know all about the Gjallerhorn and the TC driver. The inductance on that driver is not all that high, it's only about 1:1 Le:Re ratio, and while even that is a cause for concern it's at the low...
Forum: DIY Speakers and Subs   04-17-2015, 08:42 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
That's way too much money for a driver with no...

That's way too much money for a driver with no published Le spec. For that money you want to see a really low Le, not a missing Le spec. MTX never really was a value leader, but if it's what you...
Forum: DIY Speakers and Subs   04-17-2015, 06:20 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Dayton HO is pretty low inductance. I don't...

Dayton HO is pretty low inductance. I don't think it needs any inductance correction. Le:Re ratio is way lower than 1:1 so it should measure same as it sims. Need to see a measurement and compare...
Forum: DIY Speakers and Subs   04-17-2015, 03:47 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
If you think you can get the general population...

If you think you can get the general population to agree on the goals and get the designers to agree on how to implement them you are delusional. Nobody agrees about anything. It's a nice idea...
Forum: DIY Speakers and Subs   04-17-2015, 03:45 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
If you can build a sealed box you can build a...

If you can build a sealed box you can build a horn. It's all the same concepts but there's more parts and it takes longer. You can do it.

If you are worried that you can do it and make it...
Forum: DIY Speakers and Subs   04-17-2015, 03:23 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
No, neither are Hzhorn, both are UXL in...

No, neither are Hzhorn, both are UXL in Gjallerhorn, light grey line was regular sim, black line was inductance corrected sim. The light grey line is just there to show that regular sims don't work...
Forum: DIY Speakers and Subs   04-17-2015, 02:46 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Just to be clear, that's a sim of UXL in...

Just to be clear, that's a sim of UXL in Gjallerhorn, not Hzhorn. The only reason I mentioned Hzhorn is because that's the thread I originally posted that image in.
Forum: DIY Speakers and Subs   04-17-2015, 02:44 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
The UXL was used and measured in Submaximus front...

The UXL was used and measured in Submaximus front loaded horn and in Othorn tapped horn. Measurements of both are in the Hzhorn thread. Both horn measurements are also compared to Hornresp data,...
Forum: DIY Speakers and Subs   04-17-2015, 12:04 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
This is probably the most healthy attitude to...

This is probably the most healthy attitude to have. Patents were originally supposed to promote getting the info into the public domain and providing a limited amount of IP protection for a limited...
Forum: DIY Speakers and Subs   04-17-2015, 11:54 AM
Replies: 112
Views: 1,468
Posted By diy speaker guy
I did this sim awhile ago and put it in the...

I did this sim awhile ago and put it in the Hzhorn thread.

The light grey line is what a regular sim shows with UXL in Gjallerhorn.

The dark black line is my tweak to account for high...
Forum: DIY Speakers and Subs   04-16-2015, 10:12 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
I'm going to have to strongly disagree. BFM is...

I'm going to have to strongly disagree. BFM is an option to be sure, but there's a wealth of free plans, many of which perform at least as well BFM designs in the same price range, and for a bit...
Forum: DIY Speakers and Subs   04-16-2015, 10:08 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Umm... there's at least 100 people between AVS...

Umm... there's at least 100 people between AVS and diyaudio alone that can design and fold horns. Thousands more in other forums and people that don't post in forums. Even if you just look at the...
Forum: DIY Speakers and Subs   04-16-2015, 08:26 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Lol, this is productive. Did you read the first...

Lol, this is productive. Did you read the first post? This isn't about someone building something, it's about someone building several patented somethings for sale at a profit. Everybody agrees it...
Forum: DIY Speakers and Subs   04-16-2015, 03:20 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
I wouldn't have thought they'd be concerned about...

I wouldn't have thought they'd be concerned about someone renting out one of their cabs either until I saw them specifically say that's a no go.

When there's money involved things get complicated...
Forum: DIY Speakers and Subs   04-16-2015, 02:42 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Tapped horns as a general concept are patented. ...

Tapped horns as a general concept are patented. Individual designs don't have to be (and can't be) patented, they can only be copyrighted. Tapped horn technology itself is patented intellectual...
Forum: DIY Speakers and Subs   04-16-2015, 02:20 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
Recently I found out there is no fair use policy...

Recently I found out there is no fair use policy on patents, so legally diy'ers are not even legally allowed to make their own. Technically, even putting up a design of a patented alignment and...
Forum: DIY Speakers and Subs   04-16-2015, 02:10 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
I saw a post on one of the pro audio boards quite...

I saw a post on one of the pro audio boards quite a while ago (and it might have been a couple of years old at that time), probably authored by Ivan Beaver that clearly said that DSL had lawyers and...
Forum: DIY Speakers and Subs   04-16-2015, 02:02 PM
Replies: 112
Views: 1,468
Posted By diy speaker guy
There are examples that look like what we now...

There are examples that look like what we now call tapped horns that far predate the patent, like the Jensen Transflex (1954?) and IIRC a JBL model from the same era (Aircirc or something?), and many...
Forum: DIY Speakers and Subs   04-14-2015, 08:29 PM
Replies: 115
Views: 2,380
Posted By diy speaker guy
It would resonate at a higher frequency.

It would resonate at a higher frequency.
Forum: DIY Speakers and Subs   04-14-2015, 08:19 PM
Replies: 115
Views: 2,380
Posted By diy speaker guy
I took it to extremes to make a point and...

I took it to extremes to make a point and describe what would be ideal properties. There's really no confusion. High stiffness and strength is desirable. Mass does nothing but dictate how much...
Forum: DIY Speakers and Subs   04-14-2015, 01:48 PM
Replies: 115
Views: 2,380
Posted By diy speaker guy
Jello is extremely dense and has lots of mass and...

Jello is extremely dense and has lots of mass and it's not inert. Inert comes from strength and stiffness, not mass and density. In fact the more mass you have the more energy gets stored in that...
Forum: DIY Speakers and Subs   04-14-2015, 10:55 AM
Replies: 115
Views: 2,380
Posted By diy speaker guy
I'm not sure why density is desirable. I would...

I'm not sure why density is desirable. I would think infinitely strong and stiff with no mass would be ideal. Not physically possible but it would sure be nice.

But yeah, that's expensive.
Forum: DIY Speakers and Subs   04-14-2015, 10:31 AM
Replies: 115
Views: 2,380
Posted By diy speaker guy
They offer subflooring and sheathing products. ...

They offer subflooring and sheathing products. Not sure what the difference is if any, I'm not in that line of work.

I'm guessing it's not cheap since they make a big deal of showing how it's...
Showing results 1 to 25 of 472

 
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