Recent content by DS23MAN

The spider is most the contributing part of the compliance ( 70% I read somewhere).

A calibration file for free field isn't correct in nearfield measurements.

Earlier on I mentioned the problem with using a free field calibrated measurement mic within a near field setup. And this is the red herring. Because of the close range at exact tweeter axis on axis you will get a rise in the high frequencies ( source:Beyer Dynamic):

If the reference axis should be chosen before you start this Klippel spinorama, the system sucks....

Just play around in Edge. Put a 25cm woofer in a 30x30 cm baffle. Change the mic distance between 1m and 10m. No change in the respons in the normal used fr range for this size driver.

Far field starts at 3 times of the drivers diameter. It hasn't nothing to do with box size.

All Class 1 free field measurement mic's are calibrated as in a free field. When you use them close to a reflective object ( aka a loudpeaker) the calibration will be off....

Nice! Please send me the code.

Actually I am working with Rob: http://zelfbouwaudio.nl/forum/viewtopic.php?f=4&t=27161&p=1905153&hilit=piggyback#p1905153 http://zelfbouwaudio.nl/forum/viewtopic.php?f=3&t=27407&hilit=567

https://rmsacoustics.nl/

The mid dome in the Neumann KH 420 is made by Peerless India.

Link?

Lots of discussions about the Klippel system, but I can't find any reference on the measurement mic Armim is using.

Some food for thought: The spinorama is based on generated reflections in a room and are based on anechoic measurements. But a room is not all about reflections. Below the Schroeder frequency the standing waves take over: https://en.wikipedia.org/wiki/Room_acoustics How predictive are the...

9. They need a mains filter to operate perfectly... :facepalm: