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Are these measurements OK?

FredC

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Jan 19, 2021
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I own a pair of Paradigm Reference 30th Anniversary Inspiration speakers.
I bought them new 4-5 years ago after listening to them at a reseller and auditioning a bunch of other speakers. I have to say I'm happy with them and I'm not planning on upgrading for some time but since reading ASR for two years now, I have gotten curious about "how they measure" and if there are areas I could improve with EQ.

I have found the following page with measurements: here

If they measure good, fantastic, if not, why and how could I fine-tune this?

Thanks in advance!

Setup
Microphone measuring position: between tweeter and midrange
Grille: off
Frequency response and sensitivity
Sensitivity: 88.1dB (averaged 300Hz-3kHz, 2.83V/1m)
Chart A: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
fr_on1530.gif

Top curve: on-axis response
Middle curve: 15 degrees off-axis response
Bottom curve: 30 degrees off-axis response
Chart B: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
fr_456075.gif

Top curve: 45 degrees off-axis response
Middle curve: 60 degrees off-axis response
Bottom curve: 75 degrees off-axis response
Listening window
20Hz - 20kHz (measured @ 2m, plotted @ 1m)
fr_listeningwindow.gif

Response curve is an average of five measurements: on-axis, 15 degrees left and right off-axis, 15 degrees up and down off-axis
Total Harmonic Distortion + Noise
Chart A: @ 90dB, 50Hz - 10kHz (measured @ 2m)
thd_90db.gif

Top curve: frequency response @ 90dB SPL
Bottom curve: THD+N @ 90dB (50Hz - 10kHz)
Deviation from linearity
Chart A: Difference @ 90dB from 70dB, 50Hz - 20kHz (measured @ 2m)
dev_90db.gif

Impedance magnitude variation
impedance.gif

Vertical axis: impedance
Horizontal axis: frequency
Electrical phase
electrical_phase.gif

Vertical axis: phase
Horizontal axis: frequency
 

MakeMineVinyl

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They might sound a bit 'polite' with the depressed response in the 1-5kHz region, but I suspect this is not a big negative. Depends on the music you listen to mostly.
 

RayDunzl

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since reading ASR for two years now, I have gotten curious about "how they measure" and if there are areas I could improve with EQ.

How they measure on the test rig, and how they measure in your room can be two different things.

Example:

JBL LSR 308

1611074779615.png


In my room:

1611074950875.png


In my room with corrective EQ applied:

1611075012589.png
 
OP
F

FredC

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Wow, indeed. I guess I need to go buy a microphone then. I listen to them near-field but it probably doesn't mean much.
 

RayDunzl

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I listen to them near-field but it probably doesn't mean much.

Near-field should reduce the effect the room has on what you hear.

But, I wouldn't dissuade you from measuring if you want to.

The above measure with a UMIK-1 and REW software.
 

thewas

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The measurements you posted show a imho quite clever tuning for their directivity so I personally wouldn't do significant equalising except for room correction in the modal region unless you don't like their tonality which doesn't seem to be the case.
 
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