"Center" doesn't have to be forward and physically large, and there are any number of reasons why this might occur that have nothing to do with combing. In fact, any significant combing *artifacts* would be well into mid.s and upper mid.s (depending on loudspeaker separation).
As a test you could always try a 2 channel setup where you have experienced this problem before, and then "cut" the response above 400 Hz and see if it's still a problem. If it is, it's not an artifact from combing (..provided the loudspeakers aren't too far apart).
Yes, the reason you get a boost at lower frequencies is because the wavelengths get larger and larger, they wrap around the head and hit both ears where as in the stereo triangle, the higher the signal is in frequency, the less the sound wraps around the head and only hits 1 ear.
So there is a mismatch in amplitude. The transition where ILD is dominate is around 700Hz.
Another interesting thread.
I assume by RACE you mean this?
Ambio4YOU - Ambiophonic DSP | Ambio4YOU systems
I hadn't come across it before so had to Google. I'm familiar with Michael Gerzon's work on ambiosonics
Ambisonic Info | Home
but ambiophonics is new to me.
I assume by RACE you mean this?
Ambio4YOU - Ambiophonic DSP | Ambio4YOU systems
I hadn't come across it before so had to Google. I'm familiar with Michael Gerzon's work on ambiosonics
Ambisonic Info | Home
but ambiophonics is new to me.
Haha! I've got another picture for you today. I was just waiting for glue to dry......
Jeeze.........
Do the tml's exit at top and bottom? I like how each driver excites a different position in line, I have wanted to put two drivers along same line but was warned that there may be cancellation effects. Is this not a problem? I love the Viva TC9FD by the way - awesome driver for many applications.
Yes exactly.
This will be an aperiodic vented labyrinth.
It's not designed to be a quarter way resonator.
Do you mean cancellation between drivers as in lobing and comb filtering?
If so, it's been covered earlier in this thread.
Yes, the tc9 is great! It might just be the best value in audio....well, next to lamp cord 🙂
This will be an aperiodic vented labyrinth.
It's not designed to be a quarter way resonator.
Do you mean cancellation between drivers as in lobing and comb filtering?
If so, it's been covered earlier in this thread.
Yes, the tc9 is great! It might just be the best value in audio....well, next to lamp cord 🙂
No, I meant cancellation as in the quarter wave bass portion on the backside. How do you design an aperiodic vented labrynth if there is no 1/4 wave distance to calculate? I am not familiar with it.
Well, aperiodic means without period.
The line will be stuffed to max capacity, with the vents on the top a bottom.
This is to insure the back wave will not return to the drivers.....(or as little as possible)
What will come out of the vents will be so attenuated and low in frequency that there should be no cancellation or reinforcement with the front wave.
Especially when I'm not going to boost the low end. The low end BW will be the Fb of the drivers, around 150Hz or so. (I'm using stereo subs).
The line will be stuffed to max capacity, with the vents on the top a bottom.
This is to insure the back wave will not return to the drivers.....(or as little as possible)
What will come out of the vents will be so attenuated and low in frequency that there should be no cancellation or reinforcement with the front wave.
Especially when I'm not going to boost the low end. The low end BW will be the Fb of the drivers, around 150Hz or so. (I'm using stereo subs).
Thanx brother!
It's not too hard to build. The only hard part is keeping the cuts perfect. If you are even 1/2 a millimeter off, it's screwed because of the length of the cuts.
I have to wait for a week to cap the ends....I didn't have enough foam so it's being shipped to me 🙁
It's not too hard to build. The only hard part is keeping the cuts perfect. If you are even 1/2 a millimeter off, it's screwed because of the length of the cuts.
I have to wait for a week to cap the ends....I didn't have enough foam so it's being shipped to me 🙁
Cannibalize some old pillows like I did.😀 Do you have to use foam vs polyester fill?
I have a bunch of this left over from shipping containers, does it work well? I have to give it a try.
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