the Red in that pic with the current tweeter still has the original value of 1.5ohms correct?
only the blue with the new tweeter has the 1ohm?
Still not sure it's necessary. If so, just take a few turns off one you already have.
The thing with that last plot is, there may be enough difference there to hear it, but since the overall balance would be similar it should be near that point. Ie the point you mentioned where some say they just prefer the way this other tweeter is, in other words the response character.
Expect to tweak it further when you listen.
The thing with that last plot is, there may be enough difference there to hear it, but since the overall balance would be similar it should be near that point. Ie the point you mentioned where some say they just prefer the way this other tweeter is, in other words the response character.
Expect to tweak it further when you listen.
In my less knowledgeable mind. I think attenuation values is all it needs. Since the specs of both tweeters are pretty close.
of course I don’t have the same knowledge you guys have.
of course I don’t have the same knowledge you guys have.
Can’t PM you because I’m limited to a certain number of replies per hour or something like that. lol
The reason this method is close to correct is that these are quite similar tweeters. They have similar features and dispersions so looking at one axis is substantially sufficient...
Ok, there will be slight differences but this is the kind of thing you're hoping to hear for yourself.
Ok, there will be slight differences but this is the kind of thing you're hoping to hear for yourself.
No it's a bad crossower design. The phase is not aligned at the intersection. This will not be fixed with the new tweeter. That's why it sounds like it sounds, there are too many highs, but such a hole at 3k is a slight disaster. Try turning the phase on tweeter and repeat the measurement.
the tweeters is connected in reverse polarity.
do you mean switch it around?
and ultimately should the freq line after the crossover be flat and not have that dip?
thanks man
Ok I’ll try it out tomorrow and report back.
seems like Proac wouldn’t design it with it reversed if it wasn’t ‘ better’ to them though.
don’t you think?
i mean if it is as simple as reversing the polarity that would seem strange.
the tweeters btw are offset as well if that matters.
thank you
seems like Proac wouldn’t design it with it reversed if it wasn’t ‘ better’ to them though.
don’t you think?
i mean if it is as simple as reversing the polarity that would seem strange.
the tweeters btw are offset as well if that matters.
thank you
When I measure at my seating position I don’t get a dip at all there.
but the speaker does have a bit of a BBC dip at 1.8khz to 2.5khz
but the speaker does have a bit of a BBC dip at 1.8khz to 2.5khz
Well, as the mic distance increases, that hole in the response decreases, but it does not disappear completely. At greater distances there are fewer phase errors and you receive a lot of reflections and less direct sound. When you measure at 1m or less there is more direct sound. Also, if you move the microphone vertically (especially when measuring at 1m) the response changes, that is normal. As drivers have physical dimensions, they are not point sources at all frequencies, phase nonlinearities are inevitable. There is now in play the knowledge of a designer who makes a speaker, to minimize it. The smaller the diameter of the driver, the fewer these phenomena. In MTM, an additional problem is the diffraction of the high frequencies due to the presence of two conical drivers (practically two edges) near the tweeter.
I never said it would be easy for you to start correcting the factory design. Imagine what happens when you switch tweeters. 😵
I never said it would be easy for you to start correcting the factory design. Imagine what happens when you switch tweeters. 😵
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now don’t take this in the wrong manner please.
however that is a bold statement for a company such as Proac and a speaker which has won awards in its ranks.
now of course we all know that many of these awards are skewed. For sure.
and again this is not one of proacs flagship speakers. For sure
as well as the fact that the parts in the xo and materials used are to a price point.
not to mention I am not knowledgeable to possibly challenge what you are saying
And trust me. Just because they are mine doesn’t mean I care that someone criticizes them. Not in the least
I will however change the polarity of the tweeter to see what happens , and I do appreciate the input. Im not just saying that either.
thanks man
No, stay on REW. That is all and with ARTA the best solution, costly alternatives aside.
What you do need is a (crossover) simulation app like Xsim, Boxsim or VituixCAD. I use Parallels and W10 on my MacBook Pro and everything runs fine. So if you,re to invest, get W10 running on your Mac.
Try measuring at 2m and with a window of about 5ms. It won’t be without reflections ruining your measurement, but you can check if the dip is still there. It shouldn’t.
Btw NIXIE62 didn’t criticise on the design. Just warning you modding can and will set you of desired course if not done properly.
Btw NIXIE62 didn’t criticise on the design. Just warning you modding can and will set you of desired course if not done properly.