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Old 10th October 2012, 12:25 AM   #131
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Here are the multi tone measurements, also very clean and inverse FFT ( Gerhard Test ) even lower then the tweeter. The tweeter will of cause not get the full energy over the whole band because the crossover will lower the energy under 2kHz.
Attached Files
File Type: pdf Satori Bass Multiton high.pdf (19.5 KB, 104 views)
File Type: pdf Satori Bass Multitone notched.pdf (19.5 KB, 51 views)
File Type: pdf Satori Bass Gerhard Test Invers FFT.pdf (13.5 KB, 65 views)
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Old 10th October 2012, 04:35 PM   #132
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I have measured the T/S parameters of the Satori woofer. My results come out close to the published data of the 8 Ohm model. I have somewhat less Qm and a bit lower Qts.
A QB3 reflex would come out at 15 liter so this driver works well in a rather small enclosure. I decided on an slightly over damped alignment in a 20 liter box.
In that box -3dB is around 50Hz. In room the extension will go into the 30th. I think pushing such a small driver deeper makes no sense but it is a very good performance in a compact cabinet. Also quite ideal to add a sub later.
Attached Files
File Type: txt Satori 16cm T-S.txt (1.1 KB, 105 views)
File Type: pdf Satori 16cm 4 Ohm box information.pdf (9.4 KB, 123 views)
File Type: pdf Satori 16cm 4 ohm 20 l frd.pdf (16.7 KB, 100 views)
File Type: pdf Satori 16cm 4 ohm 20 l imp.pdf (13.5 KB, 70 views)
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Old 10th October 2012, 04:46 PM   #133
gornir is offline gornir  Sweden
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Joachim,

Looks great!

What baffle width did you settle for?

Regards

/Göran
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Old 10th October 2012, 04:53 PM   #134
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Well, as we discussed, around 30cm so this will not be your typical slim mini monitor. By the way the delay between the tweeter and woofer is around 32mm when we take the backs of the baskets as reference.
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Old 10th October 2012, 05:06 PM   #135
gornir is offline gornir  Sweden
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Joachim,

I don't know if you read the issue 4/2012 of the "Hobby Hifi" magazine where they tested the 8 Ohm version of the Satori mid-woofer?

It seems like your distortion measurements doesn't show the same second-order distortion peak at the cone-edge resonance as they measured, which is a good thing.

I wonder if SB Acoustic made any changes to the design?

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/Göran
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Old 10th October 2012, 05:13 PM   #136
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I have that issue but the drivers that i have do not show distortion at the frequencies.
I checked that several times because i know that this can be a problem.
Maybe they got early prototypes.
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Old 10th October 2012, 05:33 PM   #137
gornir is offline gornir  Sweden
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Quote:
Originally Posted by Joachim Gerhard View Post
I have that issue but the drivers that i have do not show distortion at the frequencies.
I checked that several times because i know that this can be a problem.
Maybe they got early prototypes.
That's great news!

However I don't think the importance of the second-order distortion peak at the cone-edge resonance should be over exaggerated.

I have the same issue with my AudioTechnology 15H mid-woofer and it's one of the best sounding mid-woofers I've had in my possession.

AudioTechnology 15H520613SDK Measurements!

I think a pair of Satories will be in my shopping list soon.

Where could I get the 4 ohm version?


/Göran
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Old 10th October 2012, 05:47 PM   #138
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Low loss comes with a little edge resonance, sure, but the sound of low loss is better.
Especially in the micro detailing and dynamics.
SB has some 4 Ohm in stock.
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Old 10th October 2012, 05:56 PM   #139
gornir is offline gornir  Sweden
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Quote:
Originally Posted by Joachim Gerhard View Post
Low loss comes with a little edge resonance, sure, but the sound of low loss is better.
Especially in the micro detailing and dynamics.
SB has some 4 Ohm in stock.
Yes, but I guess they don't sell directly to end customers.

/Göran
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Old 10th October 2012, 05:59 PM   #140
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I can get you some.
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