Hi, where are you seeing the data on the EAC compression test for the R3? I did not see the results of the test published nor in the video. I must have missed it somehow.
In my testing I do not believe the R3 is suffering from such issues as long as it is High Passed where the midbass unit runs out of steam. It can play very loudly, very cleanly. Point to where me where the compression simulation test is if you are able, I'd like to check it out.
Speaking of the 3 sine wave sweep that Erin uses. I do appreciate the test and it is helpful, I would caution anyone trying to make a 1-1 association for the actual loudspeakers compression qualities with music/content.
A sweep is not dynamic like music and it is not a whole mother load of frequencies being played simultaneously like music. Additionally with music/content you may be playing loudly for extended periods of time and the TS parameters of the drivers will change and so therefore will the frequency response of the system. In some cases it may not be compression being exposed in the sense of a driver hitting limits but rather a new frequency response due to essentially a new environment.
You also have varying pressures in the box so one can see how that could really complicate things especially when the source is not a sweep but again a bunch of frequencies all at once and changing in SPL very dynamically.
There may also be issues with the amplifier in the test reacting to different loads and at different SPL's. I don't known what amp he is using in that regard.
In any case very appreciated measurements and personally I would hesitate to draw a firm conclusion from them most of the time.
Another interesting thing portion of Geddes published work is basically summed up in the quote from some PP slides.
This was based on data gathered from blind listening tests.
This relates to both Edge Diffraction and modest amounts of non-linear distortion such as compression or frequency response deviations in the system as driver parameters and pressures in the enclosures are in flux when in use.
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