Very true, i think those poly cones and also their alu cones are sb's best mid woofer drivers, better then papers, even satori's
The measurements of SB Acoustics SB15NRXC30-8 midwoofer tweeter have been updated (offaxis, step response, waterfall and THD have been added):
SB Acoustics SB15NRXC30-8 | HiFiCompass
SB Acoustics SB15NRXC30-8 | HiFiCompass
Hi! Thanks for the measurements!
Could you update Vifa NE149 with off axis measurements? CSD plots would be nice aswell! On axis looks very nice.
Could you update Vifa NE149 with off axis measurements? CSD plots would be nice aswell! On axis looks very nice.
Unfortunately, I have no that speakers already, so can't do off axis measurements. But still can pull up the CSD and Step response from the old data.
HiFiCompass, you are doing a tremendous job with your measurements. I found your website very informative, and measurements look consistent.
I was surprised by the bad CSD of the SB15NRXC30-8, but it was actually the scale that was much better. It's not often that we can see that deep in the CSD. Thanks!
I was surprised by the bad CSD of the SB15NRXC30-8, but it was actually the scale that was much better. It's not often that we can see that deep in the CSD. Thanks!
Vifa NE series are a bit strange fruits.
NE comes from neodyme magnets in the motor. All are numbered after diameter of the mounting frame, like NE149. Actually it's radiating area is 4", measured from half of surround roll, despite you might guess it is 5". All have very deep cones that have very little resonances, but quite steep off-axis roll-off. Factory datasheet responses and all data is very reliable and consistent. Also distortion is low.
https://www.tymphany.com/drivers/driver_functions/specsheet.php?id=624
NE comes from neodyme magnets in the motor. All are numbered after diameter of the mounting frame, like NE149. Actually it's radiating area is 4", measured from half of surround roll, despite you might guess it is 5". All have very deep cones that have very little resonances, but quite steep off-axis roll-off. Factory datasheet responses and all data is very reliable and consistent. Also distortion is low.
https://www.tymphany.com/drivers/driver_functions/specsheet.php?id=624
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The measurements of ScanSpeak D3004/6600 tweeter have been updated:
ScanSpeak D3004/660000 | HiFiCompass
ScanSpeak D3004/660000 | HiFiCompass
The measurements of Accuton speakers C25-6-012, C90-6-079, C158-8-085, C220-6-221, S280-6-282 have been updated (ETC, Waterfall and step response are added only):
Accuton C220-6-221 | HiFiCompass
Accuton C25-6-012 | HiFiCompass
Accuton S280-6-282 | HiFiCompass
Accuton C90-6-079 | HiFiCompass
Accuton C158-8-085 | HiFiCompass
Accuton C220-6-221 | HiFiCompass
Accuton C25-6-012 | HiFiCompass
Accuton S280-6-282 | HiFiCompass
Accuton C90-6-079 | HiFiCompass
Accuton C158-8-085 | HiFiCompass
Great, thanks! First things I check on your site (great site by the way) are on/off axis Fresp ; HD and waterfall.
Do you also plan to add the off axis measurements? I admit those are pretty predictable, but sometimes cone geometry plays a role.
Do you also plan to add the off axis measurements? I admit those are pretty predictable, but sometimes cone geometry plays a role.
Ufortunately, I can't add off axis data to those speaker measurements because I did them some years ago and in that times I didn't know what measurements I would use in my future web site. Since then many speakers have gone and all that I can do is to pull up some additional data from old measurements. All of today's and future measurements will include offa axis data.
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Giving the fact that you've gathered large and meticulous loudspeaker measurement database which is so helpful for DIY'ers, you could organize community action so the people could lend you their drivers for further measurements. 🙂
At least you need to consider putting “donate” button on your web page. With all your efforts and contributions to the community I think we should be able to support you. What you do is time and money consuming even if it is an activity you enjoy.
Why not both?
We could send Compass drivers, postage paid both ways, he gets to extend his very, very welcome database and we get our favourite drivers tested.
Everybody who can could donate to keep it going.
Seems like a win-win to me..
We could send Compass drivers, postage paid both ways, he gets to extend his very, very welcome database and we get our favourite drivers tested.
Everybody who can could donate to keep it going.
Seems like a win-win to me..
Why limit yourself. Let's donate Klippel LSI to him! 🙂 I'd love to see some Klippel data for domestic woofers.
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Thanks for the advices, guys🙂
It seems there is a good rationalism in your words. Will try to add that button in future.
For whose who want their favourite drivers measured and published at hificompass.com - you are welcome! Feel free to contact me.
The way pointed by Charles Darwin will be OK.
I plan to add to the web site some form to ask my users which speakers they would want to see measured.
It seems there is a good rationalism in your words. Will try to add that button in future.
For whose who want their favourite drivers measured and published at hificompass.com - you are welcome! Feel free to contact me.
The way pointed by Charles Darwin will be OK.
I plan to add to the web site some form to ask my users which speakers they would want to see measured.