The TM Array™ A Technical Overview w/Thomas Mundorf (HD)
Vložit
- čas přidán 3. 02. 2009
- Thomas Mundorf, designer of the innovative new subwoofer array at the center of the World Magnetic Tour, talks about his creation and its impact on Metallica's live shows this time around.
- Věda a technologie
What a good deed for me that someone realized that Idea. Many years ago in the middle of the 90's i suggestet a nearly simular bass array for a permanent installation in an icehokey stadium. All other fellows of my company where thinking that i'm a fool. They completely circumvented that idea to grow up. Thank you Thomas Mundorf, i feel so good now.
People who dismiss innovative ideas are doomed to mediocrity.
If he invented it, its not a question how simple is it. If nobody has ever try it before, we can honestly call it a new system.
But best of all, its a killer system. Only 40 subs in a venue of 20.000 people, and it makes about 140db@40hz to every seat. Last tour in mid 9-ties with a round stage, they had something like 90 subs on the floor just to have same SPL, and they had a lot of dead spots around arena.
Very clever stuff. Nice work constructing the puzzle of constraints to appease physics. At first I was confused by the choice to point all the subs in toward each other, but damn, what a difference that makes.
Since bass in omnidirectional, there is no "front" to the speaker, so he takes advantage of each cabinet "helping" or manifolding the sound wave, they act together to form 1 big, strong wave, He talks about this at around 2:50.
I first read about this phenomenon from an EV tech manual, in 1991 or so.....
He didn't invent the process, he is just smart enough and imaginative to find the solution.
The origin of the omni-directional wave is centred on the front where the cone is. Facing the subwoofers inwards means the origin of all the omni-directional waves are closer together which prevents cancellation in the upper bass. If all the drivers were facing outwards you'd get cancellation right in the meat of the kick drum range.
@@TimpBizkit
Yes. And the drivers must be within 1/3 wavelength of the highest frequency (a third of 100hz = ~1.2m). I haven't seen the TM array since this tour. It would be much easier weight-wise with passive cabinets. KS28's are very light, for example, but the bass response from them is phenomenal.
Wonderful video!
Initially it seems strange to hang subs, then it starts to make insanely good sense
Because the audience are "coupled" to the floor, you don't actually lose "that 3dB". You get it back because the floor reflections are in phase with the incoming energy.
You never stop learning...
Great man
Hes a GENIUS
WOW.... are these subs in the Air running from a Mono signal ? in Stereo L + R? or All Subs running from an AUX send with everything else L + R? Is the stage at center ice location under all of this?
I'm not a sound engineer, but I find sound engineering very interesting. What I don't understand is why are all the subs facing inward toward each other and somewhat blocking each other? How does that work??
See "Isobaric sub enclosures"
Bass frequencies are omnidirectional so you do not need a clear path such as with mid/highs. The reason they are put like that is despite omnidirectionality, the sound source is the front of the subwoofer, so it gets the sound sources closer together. If they were facing out, you'd get some cancellation from the subwoofers behind.
genial, alguien sabe si lleva procesamiento? delay?
very nice ending! i really hate people who want to do it the difficult way.
this guy is a god
Genius.
What about hanging a centre ring of 6 Danley GH60 below the TM array to provide even coverage everywhere on the floor. It would reduce the time delay error compared to the wide spaced J arrays. Might not be loud enough though if you're needing all those boxes.
Now..Can I do this with Vertec 4880s....?
If the subwoofers were loud enough to use less of them, then couldn't you hang them vertically with 4 columns of drivers facing inwards (with gaps to let the sound out)
You can do this with any omnidirectional sub :) I'm making a video about sub arrays soon to explain how!
Malcolm MacgregorSound one only needs sound processor to set faze polarity and delay
There so many variables involved with an arena,and equations for mixing would have to be altered from arena to arena. To make such a simple statement is obviously a reflection of the mind that created it. Something as simple as altitude,humidity,or weather (any air pressure variance) the show was at night or day would all change the values of the equation at hand with this array.
MrGreenAKAguci00 In a living room or studio, yes. Not in arenas that have differing configurations
@edervjo oops, I mean around 1:50
Less subwoofers, longer column? Why not just use two columns facing each other?
Looks like he made a 4th order bandpass.
revolucionario.. jaja subs en en medio del escenario y encima de la banda o.O xD
He is not a god. He says himself that he didn't invent anything. This is a simple speaker array.
Hello Nathan! I think TM began a cult but lighting designers have dethroned his deity status ;-)
No no no, TM is not more god or genius as any other one.
He has just the abillity to do things that some others cant do.
He says clearly that he not invent this (basicly).
But he made it popular.
So stop writing nonsense or keep beliving that A.G. Bell invent's the telephone!
There's nothing technical about this overview
The guy is too bored to respond. "What can I tell you...?" Big sigh. Hey. Sorry I asked. NEXT!
physics is predictable 😂 yes, good joke.