Tech Talk 7: Using Full Range Drivers in a Line Array!
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- Опубліковано 27 лют 2020
- In this episode, Danny Richie tackles the topic of using Full Range Drivers in a Line Array! What Audiophiles need to know!
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Finally, a UA-cam channel with clear detailed explanations backed up by visual graphs/proof!
Hilarious drop in images good one Ron!
***Danny, thank you so much for this! It seemed that this was all the rage 3-4 years ago when the kit first came out. I have noticed that one of the companies that sells the kit has already got rid of the taller (more drivers) model. I knew that you needed a sub for sure with them but had no idea about the comb filtering. Thanks again!
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Same question in response to our email thread. The arc seems to be the key to dispersion. Again love the content
But the arch doesn't change the comb filtering problems.
Don Broadus Keele offers a CBT speaker. Do they suffer from the same drop in high frequency?
Yes, comb filtering is always there.
Yes, I'm late to the party...
Yet, GR Research offers speakers with multiple drivers in a 'Line Array' including the NX-Otica and NX-Treme as well as several wedges. I'm trying to reconcile these offerings with this video. How do you make it work when you demonstrate here that it cannot work???
Those are very different. They don't use multiple high frequency drivers. They use a single tweeter crossing at below 1,500Hz.
@@dannyrichie9743 thanks for the answer. I had finally come to understand this, though it did take a while to sink in.
What about cbt line
I must be missing the point, what about companies like Meyer sound who Supply line array's for major concert venues. Are they delaying the individual speakers to create a correct time arrival? They must be right?
The response is a mess.
Ron with the images... Is that New Record Day Ron?
Yes, he is my editor.
Those speakers you speak of so cloaked in mystery have received good reviews from respected publications.
I have heard a lot of feedback otherwise. In fact the feedback I heard was REALLY bad. And the simple physics of it confirms the mess.
Do the laws of Physics cease to exist in Your listening room?!!!… “My Cousin Vinnie”..!!
Them parts exspress folks don't know craw from turkey shit . Can't stand em , haven't givin parts exspress a dime since 2003, they have some good parts but the stupid things they pulled make me only stick to spending my bark at Madisound speakers in Madison Wisconsin.
Still, a) line arrays are all over the place when it comes to PA and b) Don Keele holds an Academy Award, you don't. :P
Don Keele's CBT24 uses 2.5" drivers, not 4" drivers, which moves the issue of comb filtering much further up the frequency band. He also provides all the theoretical background on what it takes to make his design work. From providing the correct level to different groups of drivers to required EQ. Add to that the fact that the late Siegried Linkwitz has been impressed by the result.
Even with the closer center to center spacing of the smaller drivers it is still a disaster. The hole top end suffers from comb filtering while the lower end couples making the frequency response super un-even. Even with a ton of EQ it still isn't going to work. You can only EQ it for a single point in space. Move up or down and the whole EQ system is way off again.