Here's 0° and 15° without right channel delay:
... with 1.02ms delay:
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... with 1.02ms delay:
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OMFG!
Markus is doing 0°-360° measurements!!! That is so avantgarde, so cool!!!
and there is more!!!
0° looks different from 360°
this Stereolith thing breaks not only the laws of physics but also the laws of logic!! WOW WOW WOW!
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As I said before, the impulse is gated 3,21 ms. There's no object around the speaker or the mic that could create any earlier reflection. So what we see is reflection free within 3,21ms unless I'm missing something.
The mic to speaker distance is 2m which is in the driver's far field.
Yes I understand, but it does not make sense by looking at the measurements.
Can you make sure there is no sound coming from the other mid driver and tweeter while inputting the signal to only one mid driver? Maybe all of them are internally connected via the cross over.
If you could, can you place the mic 1 cm from the other mid driver and the tweeter while inputting the signal to the other mid driver terminals?
- Elias
Nearfield left midwoofer, testsignal left and right:
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While doing this nearfield measurement, are you having both of the mid drivers connected to the amplifier?
It can make the difference if the drivers are internally connected and if they see common groung or not !
Also is your amplifier having common ground or two separate balanced outputs?
- Elias
It can make the difference if the drivers are internally connected and if they see common groung or not !
Also is your amplifier having common ground or two separate balanced outputs?
- Elias
A signal at the right woofer terminal is fed over a 6 dB/oct lowpass @ 100 Hz to the left woofer too. Is that what you are trying to show?
BTW: In the picture of your measuring layout - is 0° along the tweeter axis (plane) or along the woofer axis?
Good point Rudolf, there is something, because from what I know, in a common enclosure, the unconnected driver cuts abruptly after +/- 1000 Hz. Can be seen here
I suppose it's around 1mh + 3.3 R serie.
Looks like I'm not the only one to play with X-filters.
Only one solution now for markus : the screwdriver. Please markus.....
I suppose it's around 1mh + 3.3 R serie.
Looks like I'm not the only one to play with X-filters.
Only one solution now for markus : the screwdriver. Please markus.....
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Yes.
Test signal goes into a DCX2496, is split to output 1 and 2 which are fed to the left and right input of a Samson 120a.
From the nearfield measurements?
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I think the drivers operate on the same volume. There's only one reflex port...
0° is along the tweeter axis like in the picture.
I heard a stereolithe several times, the deep effect is not regular and components are of mediocre quality.
This loudspeaker is not hi-fi of the whole and costs a lot
Too expensive. And his capacity to reproduce the bass is very
Limited. In my opinion, it is not a good purchase.
But when the magic operates, this loudspeaker is spectacular....
This loudspeaker is not hi-fi of the whole and costs a lot
Too expensive. And his capacity to reproduce the bass is very
Limited. In my opinion, it is not a good purchase.
But when the magic operates, this loudspeaker is spectacular....
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Markus,
Can you come up with any kind of measurement showing the mid driver beaming? For us to get back to the reality
- Elias
I'll measure tomorrow at 1m distance.
The tweeter looks like an Audax - not a bad choice. Who supplies the other parts?
I dont know for the woofers but it's a less than 10$ tweeter....My friend replace
all the speakers by Fountek CD3 ribbon and Eton 5" . it work great now.
http://img84.imageshack.us/i/comp510.jpg/
all the speakers by Fountek CD3 ribbon and Eton 5" . it work great now.
http://img84.imageshack.us/i/comp510.jpg/
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What makes you so sure the tweeter isn't an Audax TM 025 F17?
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