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Using RTA of REW. The test tone is from Focal tools test CD. Microphone is UMM-6.Rotel RCD-855 -> Denafrips Pontus II -> CJ Premier 17LS2 -> Plinius SA102 -> Porac response three
Edits: 02/26/25Follow Ups:
Here is a measurement of the ProAc response three using a B&K 4006 microphone with DRA Labs MLSSA system measured by John Atkinson so you know its 100% correct.
It's not that bad I have seen worse on speakers costing 5 times more but it's not good either.
Look at the graph 0 dB is your average, and these speakers have a 9 dB spike at 60 HZ. To the human ear an increase of 10 dB sounds twice as loud so a 9 dB spike is unacceptable. A dip of about 2.5 to 3 dB at 2500 KHZ from 7000 KHZ to 10000 KHZ there is a 4 dB spike and from 16000 KHZ to 20000 KHZ there is about a 4 dB spike.
Funny if you look at some Focal or Magico speakers they measure just as bad and cost more. Facts are a lot of very expensive speakers measure poorly. People need to look at things from a manufacturer point of view it is more important to cut corners and make profit than it is to make a speaker with a perfect response.
That bass peak appears in same place for many speakers measured in Stereophile, which does not truly exist if measured in anechoic environment. Some of the reasons:
Bass is measured near-field
No anechoic chamber thus vulnerable to room effects
Bass driver measurement is done separately, port output also separately, and then both are spliced onto mid/treble graph without clearly repeatable standards and methods.
Edits: 03/10/25
I like them better than my B&W 801 matrix S2 (at least for now). I also have response two. I like them too.
Thats awesome always nice to switch speakers from time to time.
Measured using my Eversolo A8 and my IPhone as the mic.
Gsquared
NT
I can guarantee you that your speakers are not that "flat". There's some serious smoothing/averaging going on there.
:)
*********
We are inclusive and diverse, but dissent will not be tolerated.
.
Gsquared
Of course, but the peaky diagrams are not useful for guiding any correction.
Also using my IPhone as a mic for measurement is laughable.
Gsquared
I would guess that the speaker is "warm " sounding, given the rise around 100 and the dip between 1 and 2 thousand. Maybe that's a house sound, since it would reflect the sound of a great pair of Studio 1's I had years ago, till an ARC D 52b blew them up. Does ProAc have a distributor in the US these days?
LowIQ
If you're talking about the original Response 3 from the '80s, I used to own a pair, along with the original Response 2. These speakers rocked.
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