At long last, after imprisonment in a dank cell in the cloud mines of Bespin, my Imperial lawyer has conclusively proven that I have had nothing to do with the creation and resurgence of this so called "New Order" rabble, and am allowed my freedom once more... with conditions.
Those conditions are my banishment to this backwater galactic cesspool whose politics make even those of the Republic at it's most decadent look benevolently enlightened. However, there is one positive point to my work release conditions- I am required to do public service by once again promoting and supporting both my earlier speaker designs for music lovers and constructors in this quadrant, and to embark on new projects of value.
This shall now begin...
Taking up the issue of one of the most popular designs, there have been a number of questions regarding upgrades... you do understand that nothing comes for free?
First agenda is some component and crossover upgrades for the Natalie loudspeaker system.
A point of long discussion and contention has been what tweeter... even the original configuration can be constructed with several options of varying performance, though truly one must concede they are largely different flavors of a similar level of capability. At the behest of numerous requests, today I am presenting some initial measurement data on what may well be the best candidate considering well rounded performance and price, the ScanSpeak D2904/7100.
The factory measured IB response is quite attractive- but what happens on a real world sized baffle?
As it turns out, matters look quite similar on axis, though with the inevitable impact from diffraction from the baffle edges, as seen at 2 kHz. In this test case, the 7100 was mounted symmetrically with regards to the long axis- this makes the case for the recommended asymmetric positioning of the NatalieP front panel.
What becomes very interesting is the behavior off axis- this will also vary by baffle size and driver position. but on the test cabinet, a sweep of curves form 0 degrees to 70 degrees is very credible, and better than expected.
The larger polar measurement window above captures a large part of the energy output of the tweeter and can be considered a truer representation of the driver performance subjectively. Perhaps we can increase your understanding of the driver's behavior by also showing a plot of the RMS average of the previously shown measurements:
Now, the changes in SPL on one measurement vector are averaged into the total power response of the driver, and not manifesting the dip at 2 kHz- as the energy was reflected elsewhere from the 00 degree axis.
Clearly there are possibilities here which earlier iterations of this design have not yet unlocked.
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