I think the difference looks bigger than it is (4-5 dB @S&R vs 2-3dB @Res) and personally would trust the measurements of the S&R more, the Resolution measurement shows also a too small difference better open and closed port so I think its bass region measurement suffers on the typical problems of measuring in a normal room:
could be the room measurement technique causing the apparent bass boost, or just as the KH80 DSP from Amirm, where the temperature played a role.
It looks like it's about 2dB there and about 6dB on S&R's. That's a large discrepancy to me. I'm admittedly not sure of how Resolution measures or what their methodology looks like, but given they have CSD down to the bass range that implies to me that it's somehow free field (be it outside way up high, or in a good anechoic chamber).
I have to agree - every time I've used the 25s they mostly came off as "pretty flat, for the most part". They're not the be-all end-all, as they substantially lack bottom end IME (there's definitely a midbass hump, it's just not that severe) but they don't have that top end brightness.
Below 100 looks like nearfield summing up issue also present in stereophile measurement, the other one looks like it’s affected by temperature and the mild dip above looks similar, above 5khz I believe it’s more like the issue when poor directivity comes in play, measurement axis moved a little bit in this 3 way and bang, tonality is quite different
The noun "engineer" derives from Old French via Middle English and from the beginning meant "one who runs or supervises an engine". An "engine" was originally an ingenious machine that did clever things, usually with yarn or thread. (The "gin" in "cotton gin" is a vernacular contraction of "engine".)
Same with the GearSpace and Steve Hoffman forums. Too much snobbery in all of them.
Not as long as the audio science nerds don't throw insults at audio engineers.
Exactly, it's been an extremely depressing experience for me so I shall crawl back into my cave.
Overall, that's... pretty decent, I'd say. Not perfect but certainly pretty good. Distortion performance is quite impressive, especially in the bass - that's a genuinely impressive result for a 9" driver.
The deviation is still minor with general neutrality present though, or would it be the tweeter alignment being off center? The minor elevation shelve maybe to compensate off axis drop off, just wild guess, still very decent speaker but for the size and price I would opt for something else
Most likely from a breakup mode of the mid dome, yes. IMO ATC would do well to run the mid/tweeter crossover a touch lower, maybe more like 2.8-3k rather than 3.5k as they're really running the midrange at the bleeding limits of its passband. It doesn't help that they're relatively limited on how close together the tweeter and mid centers can be because of the absolutely fuck-off huge ferrite magnet they use on the mid dome (maybe it's me, but I feel like swapping to neodymium motors could do some good there...), which of course shows up in the vertical directivity. More dispersion control on the tweeter would help improve the even-ness of off-axis response, and I don't think that's impossible or even particularly difficult.
Yeah, but the measurements indicate that it's no worse than +2.5dB at worst. Still, flatter would be better, and more even off-axis behavior would be as well.
That’s along this post all I hope they could do, refine the tweeter dispersion by say a waveguide, change corner geometry a bit to fix some dispersion issue and bang the SOTA contender from old pro brand comes.
