Thanks. I feel like I am walking a fine line between trying to make this stuff easy to understand and not dumbing it down.

Hi-Fi Haven me too. I'm learning everything that I couldn't get out of a the Speaker Design Cookbook as far as theory goes, and the professor here does a great job of describing exactly what's going on, I'm so happy I stumbled onto these videos!

I have tested and measured about 100 different full range drivers over the years. I have designed and sold some as well. There are some disadvantages or limitations to overcome in all cases. The larger diameter drivers have very a poor off axis response. The smaller ones have low sensitivity. None of them typically play down very low. All of them give up speed, clarity, and detail to any good tweeter. Many of them have break up or rising responses that need to be corrected. I have yet to have one in here that didn't need a correction filter of some kind. Some of them though, have a really nice mid-range.

Some can load the room (like our old LS-6 and LS-9 models) and some don't load the room as much (open baffle models), but the open baffle models must be further out into the room. And a 6 foot tall line is just tall enough to cover an average listening distance for most room.

No, from what I understand it's just the opposite. Using so many drivers makes "line" type designs a high sensitivity system. You could also throw a lot of power their way and they'd love it, but it's not necessary. As far as amplifier load goes it should be about same as any other 4-8 ohm speaker,depending on how the design is wired.

The original Line Force was in milled Aluminum. It was a lot more expensive and really heavy compared to this last pair that was a milled composite.

@@dannyrichie9743 what I was trying to say is just a 1" tray that holds the drivers you screw the tray that is 6 ft tall to the mdf

They were custom built by Gary Dodd (Dodd Audio) for Danny to use at audio shows.

The larger BG Neo 10 mid-drivers are no longer available, and the newer GRS version from Parts-Express hasn't been suitable for this application. We're looking at possibly an updated version using the Radian LT6 and LM10 but that will require custom versions to match the impedance. We will also need to design a new cabinet that will fit the new drivers, so even at this point we're a year out before we can properly test a first prototype. Even as a kit, they will be very expensive and will require subwoofers, as they will be limited to 125-150Hz on the low end.

With that design, the length of the tweeter greatly limits the vertical dispersion. The highs will be very limited to a narrow range that must be kept at ear level. So it will not be a speaker that will produce an very even in room response.

with 7 inch front baffle*

Why would I?

@@dannyrichie9743 because it's a line array with huge advantages compared to traditional line arrays . Science progresses . That's why

Actually in a home audio setting they really don't have any advantages over a straight line array. But they do have some disadvantages. The curved baffle causes further delays in time across the length of the array. So it causes a slight time smear as the arrivals vary more compared to a straight line source. It also limits the coupling of the higher frequency drivers and limits sensitivity. There also aren't any line sources of that type available, completed or in kit form, that are beyond budget performance levels.

We are working on development of our own Neo 10.

You don't need to !! You're a cabinet maker, get a set of great diy plans and do what you do best, the vendor will supply the drivers and crossovers, boom !! You're done !

The most important tool: kzfaq.info/get/bejne/fZ2aeKSZ1Zuqm2w.html

I have my hearing tested annually and can hear out to 18k. Beyond that my level of hearing drops off fairly quickly. Material in that range adds openness and airiness. I don't think "airiness" is an actual word though. lol Point being, Not all ears are created equal and I am often bothered by the sound of batteries charging or capacitors filling up, so some people can appreciate the upper end of the range. Now speakers that go to 45k are just plain stupid as you would most likely agree. I have no idea what those speakers cost, but given that people I know will have spent $24k on just their cable TV bill over a decade could have put that money towards better speakers if they were so inclined, and I know I spend over $1k/month on hobbies of mine, so I can see one being able to cut some costs and save up 50K within a few years if they wanted to.

What do you mean?

@@Newrecordday2013 All I get when I search for New Record Day is Kirby meets Audio and others within Google. Not with Duck Duck go or other search engines. In fact, I was looking to give the link of the build kit and website, and it does not show up. Tried with VPN and same thing. In fact through KZfaq, I have not been able to even get your videos in the search by keywords. I may not build speakers for a living. But I do know when somethings a foot with web traffic. Someone has hijacked your keywords on ad-sense if you ask me.

That’s really bizarre, how would that happen?

@@Newrecordday2013 In the past, it was done with loading the algorithm with keywords that would match your channel or website. Say for example you had a product or video named "ACME-1" ; they would then use those keywords to push or move traffic to their videos or website. So what ends up happening is that content that is you at ACME-1, gets flagged for not being the real video that people are looking for due to traffic going to another video or site. Its a funny trick you can do with SEO's that will essentially lead to folks like google to redirect traffic from your website, content, or videos to other sites or content. You can try it yourself by adding "DIY speaker upgrades:" and then add a product name you offer. See what comes up when you do this via VPN so google does not know its you looking it up. The side affect of this is that KZfaq then automatically prunes subs from channels. that they re promoting on their platform. This came out in the days when Philip Defranco had a meeting with KZfaq Years ago as he fell from grace of the platform. Its just something I noticed and few others who mentioned to me they as well were auto un-subscribed from your channel. Please tell your subs to click the bell. Its the only way to tell the KZfaq search engine that in fact your Viewers are looking for this content and not others. Just being a good neighbor and pointing out. :-)