Question before buying Acourate

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UliBru
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Re: Question before buying Acourate

Post by UliBru » 29 Dec 2021 21:08

Do not use the QX1002USB if you cannot definitely switch off the EQ section. Otherwise you will never find a reliable neutral behaviour. Colored measurements do not make any sense at all.
Stay well tuned
Uli

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Acourate system: JRiver/Roon -> AcourateConvolver -> miniDSP U-DIO8 -> TacT M/S2150 amps -> DIY horn speakers
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vikcious
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Re: Question before buying Acourate

Post by vikcious » 29 Dec 2021 21:10

UliBru wrote:
29 Dec 2021 21:08
Do not use the QX1002USB if you cannot definitely switch off the EQ section. Otherwise you will never find a reliable neutral behaviour. Colored measurements do not make any sense at all.
Good advice indeed. The line was drawn: Focusrite Scarlett 3rd gen interface + the Dayton Audio EMM-6 mic is the winning mix! 😇
Acourate system: Matrix Audio Mini-I PRO3 --> AcourateConvolver --> Focusrite Clarett+ 4Pre --> Audiophonics Purifi Based Amplif --> KEF R3s / 2x SVS SB 1000
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dsnyder
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Re: Question before buying Acourate

Post by dsnyder » 04 Jan 2022 04:54

vikcious wrote:
29 Dec 2021 21:10
Good advice indeed. The line was drawn: Focusrite Scarlett 3rd gen interface + the Dayton Audio EMM-6 mic is the winning mix! 😇
Agreed. The Cross•Spectrum Labs EMM-6 is worth the extra cost and shipping time. IIRC, the standard Dayton Audio EMM-6 only comes with a calibration file that's valid for vertical (90º orientation), but for best results, you really want to use the mic with it pointed towards the speakers (0º orientation). Cross•Spectrum Labs provides calibration files that are more accurate and are valid for 0º, 45º, and 90º. That's easily worth the extra $25 in my book. :)

https://www.cross-spectrum.com/measurem ... ayton.html
Acourate system: Roon -> Gustard X16 DAC -> Topping Pre90 -> Orchard Audio monoblocks -> Fritz Carrera 7 BE monitors + REL T7i subs
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vikcious
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Re: Question before buying Acourate

Post by vikcious » 04 Jan 2022 10:21

dsnyder wrote:
04 Jan 2022 04:54
IIRC, the standard Dayton Audio EMM-6 only comes with a calibration file that's valid for vertical (90º orientation), but for best results, you really want to use the mic with it pointed towards the speakers (0º orientation.
This is crucial information that I wasn't able to find before purchasing the mic, or at least is not offered on the Dayton's site.
If only I know about this I would have gone for Uli's version of microphone since it was pretty much the same price. I only thought I would get the EMM-6 quicker.

Since I have already produced my first measurements with the EMM-6 they must be flawed since the mic position was indeed horizontal but the calibration file was for 90 degrees... My oh, my! Need to find a solution now! 😟
Acourate system: Matrix Audio Mini-I PRO3 --> AcourateConvolver --> Focusrite Clarett+ 4Pre --> Audiophonics Purifi Based Amplif --> KEF R3s / 2x SVS SB 1000
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Uli
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Re: Question before buying Acourate

Post by Uli » 04 Jan 2022 11:55

Victor,

can you send me the calibration data? I'll check if they are valid for a 90° setup
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vikcious
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Re: Question before buying Acourate

Post by vikcious » 04 Jan 2022 12:10

Uli wrote:
04 Jan 2022 11:55
Victor,
can you send me the calibration data? I'll check if they are valid for a 90° setup
Done. Uploaded to Google Drive and sent you a notification.

Many thanks,
Victor
Acourate system: Matrix Audio Mini-I PRO3 --> AcourateConvolver --> Focusrite Clarett+ 4Pre --> Audiophonics Purifi Based Amplif --> KEF R3s / 2x SVS SB 1000
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UliBru
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Re: Question before buying Acourate

Post by UliBru » 04 Jan 2022 12:45

The calibration looks like a 0° calibration.
Magnitude.png
Magnitude.png (17.68 KiB) Viewed 1538 times
But I do not like this zigzag curve. Green/brown is a comparison with a ECM8000 calibration with 0° + 90°.
A 90° calibration typically falls down already at 10 kHz
Stay well tuned
Uli

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Acourate system: JRiver/Roon -> AcourateConvolver -> miniDSP U-DIO8 -> TacT M/S2150 amps -> DIY horn speakers
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vikcious
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Re: Question before buying Acourate

Post by vikcious » 04 Jan 2022 12:55

UliBru wrote:
04 Jan 2022 12:45
The calibration looks like a 0° calibration.

Magnitude.png

But I do not like this zigzag curve. Green/brown is a comparison with a ECM8000 calibration with 0° + 90°.
A 90° calibration typically falls down already at 10 kHz
Thank you Uli.

Ok. What I understand the EMM-6 is a keeper and will not brake future measurements? I am asking because I could return it (since I am in the 14 days frame) and choose the one you provide for maximum confidence. The price difference is not substantial at all.

Regards,
Victor
Acourate system: Matrix Audio Mini-I PRO3 --> AcourateConvolver --> Focusrite Clarett+ 4Pre --> Audiophonics Purifi Based Amplif --> KEF R3s / 2x SVS SB 1000
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UliBru
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Re: Question before buying Acourate

Post by UliBru » 04 Jan 2022 13:03

Victor,

I'm biased as I offer calibrated mics. Indeed I do the calibration against an Earthworks M50 mic as reference with a fully linearized speaker.
The calibration result is dependent on the reference quality and on the applied measurement and mathematical evaluation. I do not claim to be an official calibration office. But as already said I wonder about the zigzag curve and 5 dB difference.
So you have to make your own decisions.
Stay well tuned
Uli

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Acourate system: JRiver/Roon -> AcourateConvolver -> miniDSP U-DIO8 -> TacT M/S2150 amps -> DIY horn speakers
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dsnyder
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Re: Question before buying Acourate

Post by dsnyder » 08 Jan 2022 06:29

vikcious wrote:
04 Jan 2022 12:55
The price difference is not substantial at all.
Yeah. I would either return it or send the mic in to have it calibrated properly for 0º operation. On the zig-zag response, I wonder if there was excessive levels or distortion during the recording. I trust Uli's analysis though, especially since you sent him the actual impulse response measurements.
Acourate system: Roon -> Gustard X16 DAC -> Topping Pre90 -> Orchard Audio monoblocks -> Fritz Carrera 7 BE monitors + REL T7i subs
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