If Speakers Were Secretly Serial Killers...
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- čas přidán 8. 07. 2024
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We can learn a ton about a speaker's characteristics and use cases by mapping out its coverage. It just so happens that it looks like it committed a murder : ).
Today we measure the coverage of a QSC K8 at four critical positions. You can use this data to look at any speaker you come across and compare these data points against each other.
We'll learn about:
Where a speaker's coverage pattern changes the least
How we can expect a speaker's tonality to change over different axial distances
Why low end doesn't change as much as you'd think
00:00 - Intro
02:35 - Taking Measurements in Smaart, Comparing Positions
08:15 - Recap - Hudba
Hi, nice video, as always!
Just a quick tip: if you want to compare 2 traces in a perticuliar frequency (such as 2kHz), you can do it by cycling between your traces with the shortcut "Z". It helps you by not moving the cursor, and you can quickly switch between one and the other.
An other tip is choosng a frequency falling on the 0dB line for one trace while having the other trace showing, and shift click on it, so that the first trace does not move (it was already at the 0dB line) but the other moves (up or down). By cycling, you can see in the upper right of magnitude plot the amount of offset that you have introduced to the other trace, thus it is the difference the two traces have in that perticuliar frequency.
Just had a thought.... I would really enjoy seeing the same experiment with two boxes. I am often asked to use two pairs of Eons or similar because that's what they have sold. They expect them to be on sticks side by side at the front Left and right, not with one pair as delays, that would be easier. I have tried so many options to make this sound good, but it never does, I often have one pair turned off or turned way down. Would love to see the physics of placing two, non-line-array boxes side by side and try to work out what angle they should be to each other.. or Volume etc...
Second this. I use a set of Turbosounds on poles on my subs next to each other and always wonder if I’m turning them properly or should I leave them straight. They are spread out about a foot on the poles but only 70 degree wide.
Hi Scott, the fact that it doesn't sound is because of the interference that happens between the two speakers that are side-by-side. The sounds interefere so much between each other that many peaks and valleys occur. That's causing it to sound very differently depending on where you are standing.
Nice video engr. I hope you discuss regarding crossover frequency and how to use it.
thanks for sharing
Fantastic explanation Michael! You really slayed it with this one #dadjokes
Thanks 👍.
Hi Mike, Great video as always.. Was thinking it would be great to see a video on "openSoundMeter" vrs "Smaart" and whats different between the two. Smarrt has available options but I cant work out what I need with Smarrt for what I need. I am an A1 with shows up to 1000 people, usual line arrays of VRX boxes and subs.. etc. Also, are the smart Videos on CZcams enough to learn it, or do you need to do a training course.. Its a world I know a lot of people want to understand more..
+1 would love to know this
Is there anything special about 6ft or was it just a random number that made sense for the video or stage size? Is the minimum variance line dependent on a calculation from the speaker’s size? This is super interesting. I need to make more time to run around with some RTA mics!
Hey michael how can you know the coverage angle of the speaker if you cant find it on the website or manual of the speaker
If you have access to the speaker I would do the same process I did in the video and note when the HF response drops off 6dB
@@MichaelCurtisAudio okay thanks alot
nice
What about a JBL Flip 6 layout?
Hi Michael, this is Kelvin from Zambia. Would like you to help me on how to deal with echo. Can I get your personal email 🙏.